[Midnightbsd-cvs] src [7737] vendor/tzcode/2016f: tag 2016f
laffer1 at midnightbsd.org
laffer1 at midnightbsd.org
Sun Aug 14 21:50:45 EDT 2016
Revision: 7737
http://svnweb.midnightbsd.org/src/?rev=7737
Author: laffer1
Date: 2016-08-14 21:50:44 -0400 (Sun, 14 Aug 2016)
Log Message:
-----------
tag 2016f
Added Paths:
-----------
vendor/tzcode/2016f/
vendor/tzcode/2016f/CONTRIBUTING
vendor/tzcode/2016f/LICENSE
vendor/tzcode/2016f/Makefile
vendor/tzcode/2016f/NEWS
vendor/tzcode/2016f/README
vendor/tzcode/2016f/Theory
vendor/tzcode/2016f/asctime.c
vendor/tzcode/2016f/date.1
vendor/tzcode/2016f/date.1.txt
vendor/tzcode/2016f/date.c
vendor/tzcode/2016f/difftime.c
vendor/tzcode/2016f/localtime.c
vendor/tzcode/2016f/newctime.3
vendor/tzcode/2016f/newctime.3.txt
vendor/tzcode/2016f/newstrftime.3
vendor/tzcode/2016f/newstrftime.3.txt
vendor/tzcode/2016f/newtzset.3
vendor/tzcode/2016f/newtzset.3.txt
vendor/tzcode/2016f/private.h
vendor/tzcode/2016f/strftime.c
vendor/tzcode/2016f/time2posix.3
vendor/tzcode/2016f/time2posix.3.txt
vendor/tzcode/2016f/tz-art.htm
vendor/tzcode/2016f/tz-how-to.html
vendor/tzcode/2016f/tz-link.htm
vendor/tzcode/2016f/tzfile.5
vendor/tzcode/2016f/tzfile.5.txt
vendor/tzcode/2016f/tzfile.h
vendor/tzcode/2016f/tzselect.8
vendor/tzcode/2016f/tzselect.8.txt
vendor/tzcode/2016f/tzselect.ksh
vendor/tzcode/2016f/workman.sh
vendor/tzcode/2016f/zdump.8
vendor/tzcode/2016f/zdump.8.txt
vendor/tzcode/2016f/zdump.c
vendor/tzcode/2016f/zic.8
vendor/tzcode/2016f/zic.8.txt
vendor/tzcode/2016f/zic.c
Removed Paths:
-------------
vendor/tzcode/2016f/Makefile
vendor/tzcode/2016f/README
vendor/tzcode/2016f/Theory
vendor/tzcode/2016f/asctime.c
vendor/tzcode/2016f/date.1
vendor/tzcode/2016f/date.1.txt
vendor/tzcode/2016f/date.c
vendor/tzcode/2016f/difftime.c
vendor/tzcode/2016f/localtime.c
vendor/tzcode/2016f/newctime.3
vendor/tzcode/2016f/newctime.3.txt
vendor/tzcode/2016f/newstrftime.3
vendor/tzcode/2016f/newstrftime.3.txt
vendor/tzcode/2016f/newtzset.3
vendor/tzcode/2016f/newtzset.3.txt
vendor/tzcode/2016f/private.h
vendor/tzcode/2016f/strftime.c
vendor/tzcode/2016f/time2posix.3
vendor/tzcode/2016f/time2posix.3.txt
vendor/tzcode/2016f/tz-art.htm
vendor/tzcode/2016f/tz-link.htm
vendor/tzcode/2016f/tzfile.5
vendor/tzcode/2016f/tzfile.5.txt
vendor/tzcode/2016f/tzfile.h
vendor/tzcode/2016f/tzselect.8
vendor/tzcode/2016f/tzselect.8.txt
vendor/tzcode/2016f/tzselect.ksh
vendor/tzcode/2016f/workman.sh
vendor/tzcode/2016f/zdump.8
vendor/tzcode/2016f/zdump.8.txt
vendor/tzcode/2016f/zdump.c
vendor/tzcode/2016f/zic.8
vendor/tzcode/2016f/zic.8.txt
vendor/tzcode/2016f/zic.c
Copied: vendor/tzcode/2016f/CONTRIBUTING (from rev 7736, vendor/tzcode/dist/CONTRIBUTING)
===================================================================
--- vendor/tzcode/2016f/CONTRIBUTING (rev 0)
+++ vendor/tzcode/2016f/CONTRIBUTING 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,73 @@
+Contributing to the tz code and data
+
+The time zone database is by no means authoritative: governments
+change timekeeping rules erratically and sometimes with little
+warning, the data entries do not cover all of civil time before
+1970, and undoubtedly errors remain in the code and data. Feel
+free to fill gaps or fix mistakes, and please email improvements
+to tz at iana.org for use in the future.
+
+To email small changes, please run a POSIX shell command like
+'diff -u old/europe new/europe >myfix.patch', and attach
+myfix.patch to the email.
+
+For more-elaborate changes, please read the Theory file and browse
+the mailing list archives <http://mm.icann.org/pipermail/tz/> for
+examples of patches that tend to work well. Ideally, additions to
+data should contain commentary citing reliable sources as
+justification.
+
+Please submit changes against either the latest release in
+<ftp://ftp.iana.org/tz/> or the master branch of the experimental
+Git repository. If you use Git the following workflow may be helpful:
+
+ * Copy the experimental repository.
+
+ git clone https://github.com/eggert/tz.git
+ cd tz
+
+ * Get current with the master branch.
+
+ git checkout master
+ git pull
+
+ * Switch to a new branch for the changes. Choose a different
+ branch name for each change set.
+
+ git checkout -b mybranch
+
+ * Edit source files. Include commentary that justifies the
+ changes by citing reliable sources.
+
+ * Debug the changes, e.g.:
+
+ make check
+ make install
+ ./zdump -v America/Los_Angeles
+
+ * For each separable change, commit it in the new branch, e.g.:
+
+ git add northamerica
+ git commit
+
+ See recent 'git log' output for the commit-message style.
+
+ * Create patch files 0001-*, 0002-*, ...
+
+ git format-patch master
+
+ * After reviewing the patch files, send the patches to tz at iana.org
+ for others to review.
+
+ git send-email master
+
+ * Start anew by getting current with the master branch again
+ (the second step above).
+
+Please do not create issues or pull requests on GitHub, as the
+proper procedure for proposing and distributing patches is via
+email as illustrated above.
+
+-----
+
+This file is in the public domain.
Copied: vendor/tzcode/2016f/LICENSE (from rev 7736, vendor/tzcode/dist/LICENSE)
===================================================================
--- vendor/tzcode/2016f/LICENSE (rev 0)
+++ vendor/tzcode/2016f/LICENSE 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,4 @@
+With a few exceptions, all files in the tz code and data (including
+this one) are in the public domain. The exceptions are tzcode's
+date.c, newstrftime.3, and strftime.c, which contain material derived
+from BSD and which use the BSD 3-clause license.
Deleted: vendor/tzcode/2016f/Makefile
===================================================================
--- vendor/tzcode/dist/Makefile 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/Makefile 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,503 +0,0 @@
-# <pre>
-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# Package name for the code distribution.
-PACKAGE= tzcode
-
-# Version numbers of the code and data distributions.
-VERSION= 2012j
-
-# Change the line below for your time zone (after finding the zone you want in
-# the time zone files, or adding it to a time zone file).
-# Alternately, if you discover you've got the wrong time zone, you can just
-# zic -l rightzone
-# to correct things.
-# Use the command
-# make zonenames
-# to get a list of the values you can use for LOCALTIME.
-
-LOCALTIME= GMT
-
-# If you want something other than Eastern United States time as a template
-# for handling POSIX-style time zone environment variables,
-# change the line below (after finding the zone you want in the
-# time zone files, or adding it to a time zone file).
-# (When a POSIX-style environment variable is handled, the rules in the
-# template file are used to determine "spring forward" and "fall back" days and
-# times; the environment variable itself specifies UTC offsets of standard and
-# summer time.)
-# Alternately, if you discover you've got the wrong time zone, you can just
-# zic -p rightzone
-# to correct things.
-# Use the command
-# make zonenames
-# to get a list of the values you can use for POSIXRULES.
-# If you want POSIX compatibility, use "America/New_York".
-
-POSIXRULES= America/New_York
-
-# Also see TZDEFRULESTRING below, which takes effect only
-# if the time zone files cannot be accessed.
-
-# Everything gets put in subdirectories of. . .
-
-TOPDIR= /usr/local
-
-# "Compiled" time zone information is placed in the "TZDIR" directory
-# (and subdirectories).
-# Use an absolute path name for TZDIR unless you're just testing the software.
-
-TZDIR= $(TOPDIR)/etc/zoneinfo
-
-# The "tzselect", "zic", and "zdump" commands get installed in. . .
-
-ETCDIR= $(TOPDIR)/etc
-
-# If you "make INSTALL", the "date" command gets installed in. . .
-
-BINDIR= $(TOPDIR)/bin
-
-# Manual pages go in subdirectories of. . .
-
-MANDIR= $(TOPDIR)/man
-
-# Library functions are put in an archive in LIBDIR.
-
-LIBDIR= $(TOPDIR)/lib
-TZLIB= $(LIBDIR)/libtz.a
-
-# If you always want time values interpreted as "seconds since the epoch
-# (not counting leap seconds)", use
-# REDO= posix_only
-# below. If you always want right time values interpreted as "seconds since
-# the epoch" (counting leap seconds)", use
-# REDO= right_only
-# below. If you want both sets of data available, with leap seconds not
-# counted normally, use
-# REDO= posix_right
-# below. If you want both sets of data available, with leap seconds counted
-# normally, use
-# REDO= right_posix
-# below.
-# POSIX mandates that leap seconds not be counted; for compatibility with it,
-# use either "posix_only" or "posix_right".
-
-REDO= posix_right
-
-# Since "." may not be in PATH...
-
-YEARISTYPE= ./yearistype
-
-# Non-default libraries needed to link.
-# Add -lintl if you want to use `gettext' on Solaris.
-LDLIBS=
-
-# Add the following to the end of the "CFLAGS=" line as needed.
-# -DHAVE_ADJTIME=0 if `adjtime' does not exist (SVR0?)
-# -DHAVE_GETTEXT=1 if `gettext' works (GNU, Linux, Solaris); also see LDLIBS
-# -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares
-# ctime_r and asctime_r incompatibly with the POSIX standard (Solaris 8).
-# -DHAVE_SETTIMEOFDAY=0 if settimeofday does not exist (SVR0?)
-# -DHAVE_SETTIMEOFDAY=1 if settimeofday has just 1 arg (SVR4)
-# -DHAVE_SETTIMEOFDAY=2 if settimeofday uses 2nd arg (4.3BSD)
-# -DHAVE_SETTIMEOFDAY=3 if settimeofday ignores 2nd arg (4.4BSD)
-# -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h"
-# -DHAVE_SYMLINK=0 if your system lacks the symlink function
-# -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h"
-# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h"
-# -DLOCALE_HOME=\"path\" if locales are in "path", not "/usr/lib/locale"
-# -DHAVE_UNISTD_H=0 if your compiler lacks a "unistd.h" (Microsoft C++ 7?)
-# -DHAVE_UTMPX_H=1 if your compiler has a "utmpx.h"
-# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
-# DST transitions if the time zone files cannot be accessed
-# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
-# -TTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
-# the default is system-supplied, typically "/usr/lib/locale"
-# $(GCC_DEBUG_FLAGS) if you are using GCC and want lots of checking
-# -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU=1
-# if you do not want run time warnings about formats that may cause
-# year 2000 grief
-# -DZIC_MAX_ABBR_LEN_WO_WARN=3
-# (or some other number) to set the maximum time zone abbreviation length
-# that zic will accept without a warning (the default is 6)
-GCC_DEBUG_FLAGS = -Dlint -g3 -O3 -fno-common -fstrict-aliasing \
- -Wall -Wextra \
- -Wbad-function-cast -Wcast-align -Wcast-qual \
- -Wformat=2 -Winit-self \
- -Wmissing-declarations -Wmissing-noreturn -Wmissing-prototypes \
- -Wnested-externs \
- -Wno-format-nonliteral -Wno-sign-compare -Wno-sign-conversion \
- -Wno-type-limits \
- -Wno-unused-parameter -Woverlength-strings -Wpointer-arith \
- -Wshadow -Wstrict-prototypes -Wsuggest-attribute=const \
- -Wsuggest-attribute=noreturn -Wsuggest-attribute=pure -Wtrampolines \
- -Wwrite-strings
-#
-# If you want to use System V compatibility code, add
-# -DUSG_COMPAT
-# to the end of the "CFLAGS=" line. This arrange for "timezone" and "daylight"
-# variables to be kept up-to-date by the time conversion functions. Neither
-# "timezone" nor "daylight" is described in X3J11's work.
-#
-# If your system has a "GMT offset" field in its "struct tm"s
-# (or if you decide to add such a field in your system's "time.h" file),
-# add the name to a define such as
-# -DTM_GMTOFF=tm_gmtoff
-# or
-# -DTM_GMTOFF=_tm_gmtoff
-# to the end of the "CFLAGS=" line.
-# Neither tm_gmtoff nor _tm_gmtoff is described in X3J11's work;
-# in its work, use of "tm_gmtoff" is described as non-conforming.
-# Both Linux and BSD have done the equivalent of defining TM_GMTOFF in
-# their recent releases.
-#
-# If your system has a "zone abbreviation" field in its "struct tm"s
-# (or if you decide to add such a field in your system's "time.h" file),
-# add the name to a define such as
-# -DTM_ZONE=tm_zone
-# or
-# -DTM_ZONE=_tm_zone
-# to the end of the "CFLAGS=" line.
-# Neither tm_zone nor _tm_zone is described in X3J11's work;
-# in its work, use of "tm_zone" is described as non-conforming.
-# Both UCB and Sun have done the equivalent of defining TM_ZONE in
-# their recent releases.
-#
-# If you want functions that were inspired by early versions of X3J11's work,
-# add
-# -DSTD_INSPIRED
-# to the end of the "CFLAGS=" line. This arranges for the functions
-# "tzsetwall", "offtime", "timelocal", "timegm", "timeoff",
-# "posix2time", and "time2posix" to be added to the time conversion library.
-# "tzsetwall" is like "tzset" except that it arranges for local wall clock
-# time (rather than the time specified in the TZ environment variable)
-# to be used.
-# "offtime" is like "gmtime" except that it accepts a second (long) argument
-# that gives an offset to add to the time_t when converting it.
-# "timelocal" is equivalent to "mktime".
-# "timegm" is like "timelocal" except that it turns a struct tm into
-# a time_t using UTC (rather than local time as "timelocal" does).
-# "timeoff" is like "timegm" except that it accepts a second (long) argument
-# that gives an offset to use when converting to a time_t.
-# "posix2time" and "time2posix" are described in an included manual page.
-# X3J11's work does not describe any of these functions.
-# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0.
-# These functions may well disappear in future releases of the time
-# conversion package.
-#
-# If you want Source Code Control System ID's left out of object modules, add
-# -DNOID
-# to the end of the "CFLAGS=" line.
-#
-# If you'll never want to handle solar-time-based time zones, add
-# -DNOSOLAR
-# to the end of the "CFLAGS=" line
-# (and comment out the "SDATA=" line below).
-# This reduces (slightly) the run-time data-space requirements of
-# the time conversion functions; it may reduce the acceptability of your system
-# to folks in oil- and cash-rich places.
-#
-# If you want to allocate state structures in localtime, add
-# -DALL_STATE
-# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc.
-#
-# If you want an "altzone" variable (a la System V Release 3.1), add
-# -DALTZONE
-# to the end of the "CFLAGS=" line.
-# This variable is not described in X3J11's work.
-#
-# If you want a "gtime" function (a la MACH), add
-# -DCMUCS
-# to the end of the "CFLAGS=" line
-# This function is not described in X3J11's work.
-#
-# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
-# out by the National Institute of Standards and Technology
-# which claims to test C and Posix conformance. If you want to pass PCTS, add
-# -DPCTS
-# to the end of the "CFLAGS=" line.
-#
-# If you want strict compliance with XPG4 as of 1994-04-09, add
-# -DXPG4_1994_04_09
-# to the end of the "CFLAGS=" line. This causes "strftime" to always return
-# 53 as a week number (rather than 52 or 53) for those days in January that
-# before the first Monday in January when a "%V" format is used and January 1
-# falls on a Friday, Saturday, or Sunday.
-
-CFLAGS=
-
-# Linker flags. Default to $(LFLAGS) for backwards compatibility
-# to tzcode2012h and earlier.
-
-LDFLAGS= $(LFLAGS)
-
-zic= ./zic
-ZIC= $(zic) $(ZFLAGS)
-
-# The name of a Posix-compliant `awk' on your system.
-AWK= awk
-
-# The full path name of a Posix-compliant shell that supports the Korn shell's
-# 'select' statement, as an extension. These days, Bash is the most popular.
-KSHELL= /bin/bash
-
-# The path where SGML DTDs are kept.
-# The default is appropriate for Ubuntu.
-SGML_TOPDIR= /usr
-SGML_SEARCH_PATH= $(SGML_TOPDIR)/share/xml/xhtml/schema/dtd/REC-html401-19991224
-
-# The catalog file(s) to use when validating.
-SGML_CATALOG_FILES= HTML4.cat
-
-# The name, arguments and environment of a program to validate your web pages.
-# See <http://www.jclark.com/sp/> for a validator, and
-# <http://validator.w3.org/source/> for a validation library.
-VALIDATE = nsgmls
-VALIDATE_FLAGS = -s -B -wall -wno-unused-param
-VALIDATE_ENV = \
- SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
- SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
- SP_CHARSET_FIXED=YES \
- SP_ENCODING=UTF-8
-
-# Flags to give 'tar' when making a distribution.
-# Try to use flags appropriate for GNU tar.
-GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w
-TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
- then echo $(GNUTARFLAGS); \
- else :; \
- fi`
-
-# Flags to give 'gzip' when making a distribution.
-GZIPFLAGS= -9n
-
-###############################################################################
-
-cc= cc
-CC= $(cc) -DTZDIR=\"$(TZDIR)\"
-
-TZCSRCS= zic.c localtime.c asctime.c scheck.c ialloc.c
-TZCOBJS= zic.o localtime.o asctime.o scheck.o ialloc.o
-TZDSRCS= zdump.c localtime.c ialloc.c
-TZDOBJS= zdump.o localtime.o ialloc.o
-DATESRCS= date.c localtime.c strftime.c asctime.c
-DATEOBJS= date.o localtime.o strftime.o asctime.o
-LIBSRCS= localtime.c asctime.c difftime.c
-LIBOBJS= localtime.o asctime.o difftime.o
-HEADERS= tzfile.h private.h
-NONLIBSRCS= zic.c zdump.c scheck.c ialloc.c
-NEWUCBSRCS= date.c strftime.c
-SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) tzselect.ksh
-MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
- tzfile.5 tzselect.8 zic.8 zdump.8
-COMMON= Makefile
-DOCS= README Theory $(MANS) date.1
-PRIMARY_YDATA= africa antarctica asia australasia \
- europe northamerica southamerica
-YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward
-NDATA= systemv factory
-SDATA= solar87 solar88 solar89
-TDATA= $(YDATA) $(NDATA) $(SDATA)
-TABDATA= iso3166.tab zone.tab
-DATA= $(YDATA) $(NDATA) $(SDATA) $(TABDATA) leapseconds yearistype.sh
-WEB_PAGES= tz-art.htm tz-link.htm
-MISC= usno1988 usno1989 usno1989a usno1995 usno1997 usno1998 \
- $(WEB_PAGES) checktab.awk workman.sh \
- zoneinfo2tdf.pl
-ENCHILADA= $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC)
-
-# And for the benefit of csh users on systems that assume the user
-# shell should be used to handle commands in Makefiles. . .
-
-SHELL= /bin/sh
-
-all: tzselect zic zdump $(LIBOBJS)
-
-ALL: all date
-
-install: all $(DATA) $(REDO) $(TZLIB) $(MANS) $(TABDATA)
- $(ZIC) -y $(YEARISTYPE) \
- -d $(TZDIR) -l $(LOCALTIME) -p $(POSIXRULES)
- -rm -f $(TZDIR)/iso3166.tab $(TZDIR)/zone.tab
- cp iso3166.tab zone.tab $(TZDIR)/.
- -mkdir $(TOPDIR) $(ETCDIR)
- cp tzselect zic zdump $(ETCDIR)/.
- -mkdir $(TOPDIR) $(MANDIR) \
- $(MANDIR)/man3 $(MANDIR)/man5 $(MANDIR)/man8
- -rm -f $(MANDIR)/man3/newctime.3 \
- $(MANDIR)/man3/newtzset.3 \
- $(MANDIR)/man5/tzfile.5 \
- $(MANDIR)/man8/tzselect.8 \
- $(MANDIR)/man8/zdump.8 \
- $(MANDIR)/man8/zic.8
- cp newctime.3 newtzset.3 $(MANDIR)/man3/.
- cp tzfile.5 $(MANDIR)/man5/.
- cp tzselect.8 zdump.8 zic.8 $(MANDIR)/man8/.
-
-INSTALL: ALL install date.1
- -mkdir $(TOPDIR) $(BINDIR)
- cp date $(BINDIR)/.
- -mkdir $(TOPDIR) $(MANDIR) $(MANDIR)/man1
- -rm -f $(MANDIR)/man1/date.1
- cp date.1 $(MANDIR)/man1/.
-
-version.h:
- (echo 'static char const PKGVERSION[]="($(PACKAGE)) ";' && \
- echo 'static char const TZVERSION[]="$(VERSION)";') >$@
-
-zdump: $(TZDOBJS)
- $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
-
-zic: $(TZCOBJS) yearistype
- $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
-
-yearistype: yearistype.sh
- cp yearistype.sh yearistype
- chmod +x yearistype
-
-posix_only: zic $(TDATA)
- $(ZIC) -y $(YEARISTYPE) -d $(TZDIR) -L /dev/null $(TDATA)
-
-right_only: zic leapseconds $(TDATA)
- $(ZIC) -y $(YEARISTYPE) -d $(TZDIR) -L leapseconds $(TDATA)
-
-# In earlier versions of this makefile, the other two directories were
-# subdirectories of $(TZDIR). However, this led to configuration errors.
-# For example, with posix_right under the earlier scheme,
-# TZ='right/Australia/Adelaide' got you localtime with leap seconds,
-# but gmtime without leap seconds, which led to problems with applications
-# like sendmail that subtract gmtime from localtime.
-# Therefore, the other two directories are now siblings of $(TZDIR).
-# You must replace all of $(TZDIR) to switch from not using leap seconds
-# to using them, or vice versa.
-other_two: zic leapseconds $(TDATA)
- $(ZIC) -y $(YEARISTYPE) -d $(TZDIR)-posix -L /dev/null $(TDATA)
- $(ZIC) -y $(YEARISTYPE) \
- -d $(TZDIR)-leaps -L leapseconds $(TDATA)
-
-posix_right: posix_only other_two
-
-right_posix: right_only other_two
-
-zones: $(REDO)
-
-$(TZLIB): $(LIBOBJS)
- -mkdir $(TOPDIR) $(LIBDIR)
- ar ru $@ $(LIBOBJS)
- if [ -x /usr/ucb/ranlib ] || [ -x /usr/bin/ranlib ]; \
- then ranlib $@ ; fi
-
-date: $(DATEOBJS)
- $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
-
-tzselect: tzselect.ksh
- sed \
- -e 's|#!/bin/bash|#!$(KSHELL)|g' \
- -e 's|AWK=[^}]*|AWK=$(AWK)|g' \
- -e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
- -e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
- -e 's|\(TZVERSION\)=.*|\1=$(VERSION)|' \
- <$? >$@
- chmod +x $@
-
-check: check_tables check_web
-
-check_tables: checktab.awk $(PRIMARY_YDATA)
- $(AWK) -f checktab.awk $(PRIMARY_YDATA)
-
-check_web: $(WEB_PAGES)
- $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) $(WEB_PAGES)
-
-clean:
- rm -f core *.o *.out \
- date tzselect version.h zdump zic yearistype
- rm -f -r tzpublic
-
-maintainer-clean: clean
- @echo 'This command is intended for maintainers to use; it'
- @echo 'deletes files that may need special tools to rebuild.'
- rm -f *.[1-8].txt *.asc *.tar.gz
-
-names:
- @echo $(ENCHILADA)
-
-public: check check_public set-timestamps tarballs signatures
-
-# Set the time stamps to those of the git repository, if available,
-# and if the files have not changed since then.
-# This uses GNU 'touch' syntax 'touch -d at N FILE',
-# where N is the number of seconds since 1970.
-# If git or GNU 'touch' is absent, do nothing.
-set-timestamps:
- -TZ=UTC0 && export TZ && files=`git ls-files` && \
- touch -d @1 test.out && rm -f test.out && \
- for file in $$files; do \
- test -z "`git diff --name-only $$file`" || continue; \
- cmd="touch -d @`git log -1 --format='format:%ct' $$file \
- ` $$file" && \
- echo "$$cmd" && \
- $$cmd || exit; \
- done
-
-# The zics below ensure that each data file can stand on its own.
-# We also do an all-files run to catch links to links.
-
-check_public: $(ENCHILADA)
- make maintainer-clean
- make "CFLAGS=$(GCC_DEBUG_FLAGS)"
- mkdir tzpublic
- for i in $(TDATA) ; do \
- $(zic) -v -d tzpublic $$i 2>&1 || exit; \
- done
- $(zic) -v -d tzpublic $(TDATA)
- rm -f -r tzpublic
-
-tarballs: tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
-
-tzcode$(VERSION).tar.gz: $(COMMON) $(DOCS) $(SOURCES) $(MISC)
- for i in *.[1-8] ; do \
- LC_ALL=C sh workman.sh $$i > $$i.txt && \
- touch -r $$i $$i.txt || exit; \
- done
- LC_ALL=C && export LC_ALL && \
- tar $(TARFLAGS) -cf - \
- $(COMMON) $(DOCS) $(SOURCES) $(MISC) *.[1-8].txt | \
- gzip $(GZIPFLAGS) > $@
-
-tzdata$(VERSION).tar.gz: $(COMMON) $(DATA)
- LC_ALL=C && export LC_ALL && \
- tar $(TARFLAGS) -cf - $(COMMON) $(DATA) | \
- gzip $(GZIPFLAGS) > $@
-
-signatures: tzcode$(VERSION).tar.gz.asc tzdata$(VERSION).tar.gz.asc
-
-tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
- gpg --armor --detach-sign $?
-
-tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
- gpg --armor --detach-sign $?
-
-typecheck:
- make clean
- for i in "long long" unsigned double; \
- do \
- make CFLAGS="-DTYPECHECK -D__time_t_defined -D_TIME_T \"-Dtime_t=$$i\"" ; \
- ./zdump -v Europe/Rome ; \
- make clean ; \
- done
-
-zonenames: $(TDATA)
- @$(AWK) '/^Zone/ { print $$2 } /^Link/ { print $$3 }' $(TDATA)
-
-asctime.o: private.h tzfile.h
-date.o: private.h
-difftime.o: private.h
-ialloc.o: private.h
-localtime.o: private.h tzfile.h
-scheck.o: private.h
-strftime.o: tzfile.h
-zdump.o: version.h
-zic.o: private.h tzfile.h version.h
-
-.KEEP_STATE:
Copied: vendor/tzcode/2016f/Makefile (from rev 7736, vendor/tzcode/dist/Makefile)
===================================================================
--- vendor/tzcode/2016f/Makefile (rev 0)
+++ vendor/tzcode/2016f/Makefile 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,695 @@
+# This file is in the public domain, so clarified as of
+# 2009-05-17 by Arthur David Olson.
+
+# Package name for the code distribution.
+PACKAGE= tzcode
+
+# Version numbers of the code and data distributions.
+VERSION= 2016f
+
+# Email address for bug reports.
+BUGEMAIL= tz at iana.org
+
+# Change the line below for your time zone (after finding the zone you want in
+# the time zone files, or adding it to a time zone file).
+# Alternately, if you discover you've got the wrong time zone, you can just
+# zic -l rightzone
+# to correct things.
+# Use the command
+# make zonenames
+# to get a list of the values you can use for LOCALTIME.
+
+LOCALTIME= GMT
+
+# If you want something other than Eastern United States time as a template
+# for handling POSIX-style time zone environment variables,
+# change the line below (after finding the zone you want in the
+# time zone files, or adding it to a time zone file).
+# (When a POSIX-style environment variable is handled, the rules in the
+# template file are used to determine "spring forward" and "fall back" days and
+# times; the environment variable itself specifies UT offsets of standard and
+# summer time.)
+# Alternately, if you discover you've got the wrong time zone, you can just
+# zic -p rightzone
+# to correct things.
+# Use the command
+# make zonenames
+# to get a list of the values you can use for POSIXRULES.
+# If you want POSIX compatibility, use "America/New_York".
+
+POSIXRULES= America/New_York
+
+# Also see TZDEFRULESTRING below, which takes effect only
+# if the time zone files cannot be accessed.
+
+# Everything gets put in subdirectories of. . .
+
+TOPDIR= /usr/local
+
+# "Compiled" time zone information is placed in the "TZDIR" directory
+# (and subdirectories).
+# Use an absolute path name for TZDIR unless you're just testing the software.
+
+TZDIR_BASENAME= zoneinfo
+TZDIR= $(TOPDIR)/etc/$(TZDIR_BASENAME)
+
+# Types to try, as an alternative to time_t. int64_t should be first.
+TIME_T_ALTERNATIVES= int64_t int32_t uint32_t uint64_t
+
+# The "tzselect", "zic", and "zdump" commands get installed in. . .
+
+ETCDIR= $(TOPDIR)/etc
+
+# If you "make INSTALL", the "date" command gets installed in. . .
+
+BINDIR= $(TOPDIR)/bin
+
+# Manual pages go in subdirectories of. . .
+
+MANDIR= $(TOPDIR)/man
+
+# Library functions are put in an archive in LIBDIR.
+
+LIBDIR= $(TOPDIR)/lib
+
+# If you always want time values interpreted as "seconds since the epoch
+# (not counting leap seconds)", use
+# REDO= posix_only
+# below. If you always want right time values interpreted as "seconds since
+# the epoch" (counting leap seconds)", use
+# REDO= right_only
+# below. If you want both sets of data available, with leap seconds not
+# counted normally, use
+# REDO= posix_right
+# below. If you want both sets of data available, with leap seconds counted
+# normally, use
+# REDO= right_posix
+# below. POSIX mandates that leap seconds not be counted; for compatibility
+# with it, use "posix_only" or "posix_right".
+
+REDO= posix_right
+
+# If you want out-of-scope and often-wrong data from the file 'backzone', use
+# PACKRATDATA= backzone
+# To omit this data, use
+# PACKRATDATA=
+
+PACKRATDATA=
+
+# Since "." may not be in PATH...
+
+YEARISTYPE= ./yearistype
+
+# Non-default libraries needed to link.
+# Add -lintl if you want to use 'gettext' on Solaris.
+LDLIBS=
+
+# Add the following to the end of the "CFLAGS=" line as needed.
+# -DBIG_BANG=-9999999LL if the Big Bang occurred at time -9999999 (see zic.c)
+# -DHAVE_DECL_ASCTIME_R=0 if <time.h> does not declare asctime_r
+# -DHAVE_DIRECT_H if mkdir needs <direct.h> (MS-Windows)
+# -DHAVE_DOS_FILE_NAMES if file names have drive specifiers etc. (MS-DOS)
+# -DHAVE_GETTEXT=1 if 'gettext' works (GNU, Linux, Solaris); also see LDLIBS
+# -DHAVE_INCOMPATIBLE_CTIME_R=1 if your system's time.h declares
+# ctime_r and asctime_r incompatibly with the POSIX standard (Solaris 8).
+# -DHAVE_INTTYPES_H=1 if you have a pre-C99 compiler with "inttypes.h"
+# -DHAVE_LINK=0 if your system lacks a link function
+# -DHAVE_LOCALTIME_R=0 if your system lacks a localtime_r function
+# -DHAVE_LOCALTIME_RZ=0 if you do not want zdump to use localtime_rz
+# This defaults to 1 if a working localtime_rz seems to be available.
+# localtime_rz can make zdump significantly faster, but is nonstandard.
+# -DHAVE_POSIX_DECLS=0 if your system's include files do not declare
+# functions like 'link' or variables like 'tzname' required by POSIX
+# -DHAVE_STDINT_H=1 if you have a pre-C99 compiler with "stdint.h"
+# -DHAVE_STRFTIME_L=1 if <time.h> declares locale_t and strftime_l
+# This defaults to 0 if _POSIX_VERSION < 200809, 1 otherwise.
+# -DHAVE_STRDUP=0 if your system lacks the strdup function
+# -DHAVE_SYMLINK=0 if your system lacks the symlink function
+# -DHAVE_SYS_STAT_H=0 if your compiler lacks a "sys/stat.h"
+# -DHAVE_SYS_WAIT_H=0 if your compiler lacks a "sys/wait.h"
+# -DHAVE_TZSET=0 if your system lacks a tzset function
+# -DHAVE_UNISTD_H=0 if your compiler lacks a "unistd.h" (Microsoft C++ 7?)
+# -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU=1
+# if you do not want run time warnings about formats that may cause
+# year 2000 grief
+# -Dssize_t=long on ancient hosts that lack ssize_t
+# -DTHREAD_SAFE=1 to make localtime.c thread-safe, as POSIX requires;
+# not needed by the main-program tz code, which is single-threaded.
+# Append other compiler flags as needed, e.g., -pthread on GNU/Linux.
+# -Dtime_tz=\"T\" to use T as the time_t type, rather than the system time_t
+# -DTZ_DOMAIN=\"foo\" to use "foo" for gettext domain name; default is "tz"
+# -DTZ_DOMAINDIR=\"/path\" to use "/path" for gettext directory;
+# the default is system-supplied, typically "/usr/lib/locale"
+# -DTZDEFRULESTRING=\",date/time,date/time\" to default to the specified
+# DST transitions if the time zone files cannot be accessed
+# -DUNINIT_TRAP=1 if reading uninitialized storage can cause problems
+# other than simply getting garbage data
+# -DUSE_LTZ=0 to build zdump with the system time zone library
+# Also set TZDOBJS=zdump.o and CHECK_TIME_T_ALTERNATIVES= below.
+# -DZIC_MAX_ABBR_LEN_WO_WARN=3
+# (or some other number) to set the maximum time zone abbreviation length
+# that zic will accept without a warning (the default is 6)
+# $(GCC_DEBUG_FLAGS) if you are using recent GCC and want lots of checking
+GCC_DEBUG_FLAGS = -Dlint -g3 -O3 -fno-common -fstrict-aliasing \
+ -Wall -Wextra \
+ -Wbad-function-cast -Wcast-align -Wdate-time \
+ -Wdeclaration-after-statement \
+ -Wdouble-promotion \
+ -Wformat=2 -Winit-self -Wjump-misses-init \
+ -Wlogical-op -Wmissing-prototypes -Wnested-externs \
+ -Wold-style-definition -Woverlength-strings -Wpointer-arith \
+ -Wshadow -Wstrict-prototypes -Wsuggest-attribute=const \
+ -Wsuggest-attribute=format -Wsuggest-attribute=noreturn \
+ -Wsuggest-attribute=pure -Wtrampolines \
+ -Wunused -Wwrite-strings \
+ -Wno-address -Wno-format-nonliteral -Wno-sign-compare \
+ -Wno-type-limits -Wno-unused-parameter
+#
+# If you want to use System V compatibility code, add
+# -DUSG_COMPAT
+# to the end of the "CFLAGS=" line. This arrange for "timezone" and "daylight"
+# variables to be kept up-to-date by the time conversion functions. Neither
+# "timezone" nor "daylight" is described in X3J11's work.
+#
+# If your system has a "GMT offset" field in its "struct tm"s
+# (or if you decide to add such a field in your system's "time.h" file),
+# add the name to a define such as
+# -DTM_GMTOFF=tm_gmtoff
+# to the end of the "CFLAGS=" line. If not defined, the code attempts to
+# guess TM_GMTOFF from other macros; define NO_TM_GMTOFF to suppress this.
+# Similarly, if your system has a "zone abbreviation" field, define
+# -DTM_ZONE=tm_zone
+# and define NO_TM_ZONE to suppress any guessing. These two fields are not
+# required by POSIX, but are widely available on GNU/Linux and BSD systems.
+#
+# If you want functions that were inspired by early versions of X3J11's work,
+# add
+# -DSTD_INSPIRED
+# to the end of the "CFLAGS=" line. This arranges for the functions
+# "tzsetwall", "offtime", "timelocal", "timegm", "timeoff",
+# "posix2time", and "time2posix" to be added to the time conversion library.
+# "tzsetwall" is like "tzset" except that it arranges for local wall clock
+# time (rather than the time specified in the TZ environment variable)
+# to be used.
+# "offtime" is like "gmtime" except that it accepts a second (long) argument
+# that gives an offset to add to the time_t when converting it.
+# "timelocal" is equivalent to "mktime".
+# "timegm" is like "timelocal" except that it turns a struct tm into
+# a time_t using UT (rather than local time as "timelocal" does).
+# "timeoff" is like "timegm" except that it accepts a second (long) argument
+# that gives an offset to use when converting to a time_t.
+# "posix2time" and "time2posix" are described in an included manual page.
+# X3J11's work does not describe any of these functions.
+# Sun has provided "tzsetwall", "timelocal", and "timegm" in SunOS 4.0.
+# These functions may well disappear in future releases of the time
+# conversion package.
+#
+# If you don't want functions that were inspired by NetBSD, add
+# -DNETBSD_INSPIRED=0
+# to the end of the "CFLAGS=" line. Otherwise, the functions
+# "localtime_rz", "mktime_z", "tzalloc", and "tzfree" are added to the
+# time library, and if STD_INSPIRED is also defined the functions
+# "posix2time_z" and "time2posix_z" are added as well.
+# The functions ending in "_z" (or "_rz") are like their unsuffixed
+# (or suffixed-by-"_r") counterparts, except with an extra first
+# argument of opaque type timezone_t that specifies the time zone.
+# "tzalloc" allocates a timezone_t value, and "tzfree" frees it.
+#
+# If you want to allocate state structures in localtime, add
+# -DALL_STATE
+# to the end of the "CFLAGS=" line. Storage is obtained by calling malloc.
+#
+# If you want an "altzone" variable (a la System V Release 3.1), add
+# -DALTZONE
+# to the end of the "CFLAGS=" line.
+# This variable is not described in X3J11's work.
+#
+# NIST-PCTS:151-2, Version 1.4, (1993-12-03) is a test suite put
+# out by the National Institute of Standards and Technology
+# which claims to test C and Posix conformance. If you want to pass PCTS, add
+# -DPCTS
+# to the end of the "CFLAGS=" line.
+#
+# If you want strict compliance with XPG4 as of 1994-04-09, add
+# -DXPG4_1994_04_09
+# to the end of the "CFLAGS=" line. This causes "strftime" to always return
+# 53 as a week number (rather than 52 or 53) for those days in January that
+# before the first Monday in January when a "%V" format is used and January 1
+# falls on a Friday, Saturday, or Sunday.
+
+CFLAGS=
+
+# Linker flags. Default to $(LFLAGS) for backwards compatibility
+# to tzcode2012h and earlier.
+
+LDFLAGS= $(LFLAGS)
+
+# For leap seconds, this Makefile uses LEAPSECONDS='-L leapseconds' in
+# submake command lines. The default is no leap seconds.
+
+LEAPSECONDS=
+
+# The zic command and its arguments.
+
+zic= ./zic
+ZIC= $(zic) $(ZFLAGS)
+
+ZFLAGS=
+
+# How to use zic to install tzdata binary files.
+
+ZIC_INSTALL= $(ZIC) -y $(YEARISTYPE) -d $(DESTDIR)$(TZDIR) $(LEAPSECONDS)
+
+# The name of a Posix-compliant 'awk' on your system.
+AWK= awk
+
+# The full path name of a Posix-compliant shell, preferably one that supports
+# the Korn shell's 'select' statement as an extension.
+# These days, Bash is the most popular.
+# It should be OK to set this to /bin/sh, on platforms where /bin/sh
+# lacks 'select' or doesn't completely conform to Posix, but /bin/bash
+# is typically nicer if it works.
+KSHELL= /bin/bash
+
+# The path where SGML DTDs are kept and the catalog file(s) to use when
+# validating. The default is appropriate for Ubuntu 13.10.
+SGML_TOPDIR= /usr
+SGML_DTDDIR= $(SGML_TOPDIR)/share/xml/w3c-sgml-lib/schema/dtd
+SGML_SEARCH_PATH= $(SGML_DTDDIR)/REC-html401-19991224
+SGML_CATALOG_FILES= \
+ $(SGML_TOPDIR)/share/doc/w3-recs/html/www.w3.org/TR/1999/REC-html401-19991224/HTML4.cat
+
+# The name, arguments and environment of a program to validate your web pages.
+# See <http://www.jclark.com/sp/> for a validator, and
+# <http://validator.w3.org/source/> for a validation library.
+VALIDATE = nsgmls
+VALIDATE_FLAGS = -s -B -wall -wno-unused-param
+VALIDATE_ENV = \
+ SGML_CATALOG_FILES=$(SGML_CATALOG_FILES) \
+ SGML_SEARCH_PATH=$(SGML_SEARCH_PATH) \
+ SP_CHARSET_FIXED=YES \
+ SP_ENCODING=UTF-8
+
+# This expensive test requires USE_LTZ.
+# To suppress it, define this macro to be empty.
+CHECK_TIME_T_ALTERNATIVES = check_time_t_alternatives
+
+# SAFE_CHAR is a regular expression that matches a safe character.
+# Some parts of this distribution are limited to safe characters;
+# others can use any UTF-8 character.
+# For now, the safe characters are a safe subset of ASCII.
+# The caller must set the shell variable 'sharp' to the character '#',
+# since Makefile macros cannot contain '#'.
+# TAB_CHAR is a single tab character, in single quotes.
+TAB_CHAR= ' '
+SAFE_CHARSET1= $(TAB_CHAR)' !\"'$$sharp'$$%&'\''()*+,./0123456789:;<=>?@'
+SAFE_CHARSET2= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\^_`'
+SAFE_CHARSET3= 'abcdefghijklmnopqrstuvwxyz{|}~'
+SAFE_CHARSET= $(SAFE_CHARSET1)$(SAFE_CHARSET2)$(SAFE_CHARSET3)
+SAFE_CHAR= '[]'$(SAFE_CHARSET)'-]'
+
+# OK_CHAR matches any character allowed in the distributed files.
+# This is the same as SAFE_CHAR, except that multibyte letters are
+# also allowed so that commentary can contain people's names and quote
+# non-English sources. For non-letters the sources are limited to
+# ASCII renderings for the convenience of maintainers whose text editors
+# mishandle UTF-8 by default (e.g., XEmacs 21.4.22).
+OK_CHAR= '[][:alpha:]'$(SAFE_CHARSET)'-]'
+
+# SAFE_LINE matches a line of safe characters.
+# SAFE_SHARP_LINE is similar, except any OK character can follow '#';
+# this is so that comments can contain non-ASCII characters.
+# OK_LINE matches a line of OK characters.
+SAFE_LINE= '^'$(SAFE_CHAR)'*$$'
+SAFE_SHARP_LINE='^'$(SAFE_CHAR)'*('$$sharp$(OK_CHAR)'*)?$$'
+OK_LINE= '^'$(OK_CHAR)'*$$'
+
+# Flags to give 'tar' when making a distribution.
+# Try to use flags appropriate for GNU tar.
+GNUTARFLAGS= --numeric-owner --owner=0 --group=0 --mode=go+u,go-w
+TARFLAGS= `if tar $(GNUTARFLAGS) --version >/dev/null 2>&1; \
+ then echo $(GNUTARFLAGS); \
+ else :; \
+ fi`
+
+# Flags to give 'gzip' when making a distribution.
+GZIPFLAGS= -9n
+
+###############################################################################
+
+#MAKE= make
+
+cc= cc
+CC= $(cc) -DTZDIR=\"$(TZDIR)\"
+
+AR= ar
+
+# ':' on typical hosts; 'ranlib' on the ancient hosts that still need ranlib.
+RANLIB= :
+
+TZCOBJS= zic.o
+TZDOBJS= zdump.o localtime.o asctime.o
+DATEOBJS= date.o localtime.o strftime.o asctime.o
+LIBSRCS= localtime.c asctime.c difftime.c
+LIBOBJS= localtime.o asctime.o difftime.o
+HEADERS= tzfile.h private.h
+NONLIBSRCS= zic.c zdump.c
+NEWUCBSRCS= date.c strftime.c
+SOURCES= $(HEADERS) $(LIBSRCS) $(NONLIBSRCS) $(NEWUCBSRCS) \
+ tzselect.ksh workman.sh
+MANS= newctime.3 newstrftime.3 newtzset.3 time2posix.3 \
+ tzfile.5 tzselect.8 zic.8 zdump.8
+MANTXTS= newctime.3.txt newstrftime.3.txt newtzset.3.txt \
+ time2posix.3.txt \
+ tzfile.5.txt tzselect.8.txt zic.8.txt zdump.8.txt \
+ date.1.txt
+COMMON= CONTRIBUTING LICENSE Makefile NEWS README Theory
+WEB_PAGES= tz-art.htm tz-how-to.html tz-link.htm
+DOCS= $(MANS) date.1 $(MANTXTS) $(WEB_PAGES)
+PRIMARY_YDATA= africa antarctica asia australasia \
+ europe northamerica southamerica
+YDATA= $(PRIMARY_YDATA) pacificnew etcetera backward
+NDATA= systemv factory
+TDATA= $(YDATA) $(NDATA)
+ZONETABLES= zone1970.tab zone.tab
+TABDATA= iso3166.tab leapseconds $(ZONETABLES)
+LEAP_DEPS= leapseconds.awk leap-seconds.list
+DATA= $(YDATA) $(NDATA) backzone $(TABDATA) \
+ leap-seconds.list yearistype.sh
+AWK_SCRIPTS= checklinks.awk checktab.awk leapseconds.awk
+MISC= $(AWK_SCRIPTS) zoneinfo2tdf.pl
+ENCHILADA= $(COMMON) $(DOCS) $(SOURCES) $(DATA) $(MISC)
+
+# And for the benefit of csh users on systems that assume the user
+# shell should be used to handle commands in Makefiles. . .
+
+SHELL= /bin/sh
+
+all: tzselect yearistype zic zdump libtz.a $(TABDATA)
+
+ALL: all date $(ENCHILADA)
+
+install: all $(DATA) $(REDO) $(MANS)
+ mkdir -p $(DESTDIR)$(ETCDIR) $(DESTDIR)$(TZDIR) \
+ $(DESTDIR)$(LIBDIR) \
+ $(DESTDIR)$(MANDIR)/man3 $(DESTDIR)$(MANDIR)/man5 \
+ $(DESTDIR)$(MANDIR)/man8
+ $(ZIC_INSTALL) -l $(LOCALTIME) -p $(POSIXRULES)
+ cp -f iso3166.tab $(ZONETABLES) $(DESTDIR)$(TZDIR)/.
+ cp tzselect zic zdump $(DESTDIR)$(ETCDIR)/.
+ cp libtz.a $(DESTDIR)$(LIBDIR)/.
+ $(RANLIB) $(DESTDIR)$(LIBDIR)/libtz.a
+ cp -f newctime.3 newtzset.3 $(DESTDIR)$(MANDIR)/man3/.
+ cp -f tzfile.5 $(DESTDIR)$(MANDIR)/man5/.
+ cp -f tzselect.8 zdump.8 zic.8 $(DESTDIR)$(MANDIR)/man8/.
+
+INSTALL: ALL install date.1
+ mkdir -p $(DESTDIR)$(BINDIR) $(DESTDIR)$(MANDIR)/man1
+ cp date $(DESTDIR)$(BINDIR)/.
+ cp -f date.1 $(DESTDIR)$(MANDIR)/man1/.
+
+version.h:
+ (echo 'static char const PKGVERSION[]="($(PACKAGE)) ";' && \
+ echo 'static char const TZVERSION[]="$(VERSION)";' && \
+ echo 'static char const REPORT_BUGS_TO[]="$(BUGEMAIL)";') >$@
+
+zdump: $(TZDOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZDOBJS) $(LDLIBS)
+
+zic: $(TZCOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(TZCOBJS) $(LDLIBS)
+
+yearistype: yearistype.sh
+ cp yearistype.sh yearistype
+ chmod +x yearistype
+
+leapseconds: $(LEAP_DEPS)
+ $(AWK) -f leapseconds.awk leap-seconds.list >$@
+
+# Arguments to pass to submakes of install_data.
+# They can be overridden by later submake arguments.
+INSTALLARGS = \
+ DESTDIR=$(DESTDIR) \
+ LEAPSECONDS='$(LEAPSECONDS)' \
+ PACKRATDATA='$(PACKRATDATA)' \
+ TZDIR=$(TZDIR) \
+ YEARISTYPE=$(YEARISTYPE) \
+ ZIC='$(ZIC)'
+
+# 'make install_data' installs one set of tz binary files.
+# It can be tailored by setting LEAPSECONDS, PACKRATDATA, etc.
+install_data: zic leapseconds yearistype $(PACKRATDATA) $(TDATA)
+ $(ZIC_INSTALL) $(TDATA)
+ $(AWK) '/^Rule/' $(TDATA) | $(ZIC_INSTALL) - $(PACKRATDATA)
+
+posix_only:
+ $(MAKE) $(INSTALLARGS) LEAPSECONDS= install_data
+
+right_only:
+ $(MAKE) $(INSTALLARGS) LEAPSECONDS='-L leapseconds' \
+ install_data
+
+# In earlier versions of this makefile, the other two directories were
+# subdirectories of $(TZDIR). However, this led to configuration errors.
+# For example, with posix_right under the earlier scheme,
+# TZ='right/Australia/Adelaide' got you localtime with leap seconds,
+# but gmtime without leap seconds, which led to problems with applications
+# like sendmail that subtract gmtime from localtime.
+# Therefore, the other two directories are now siblings of $(TZDIR).
+# You must replace all of $(TZDIR) to switch from not using leap seconds
+# to using them, or vice versa.
+right_posix: right_only
+ rm -fr $(DESTDIR)$(TZDIR)-leaps
+ ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-leaps || \
+ $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
+ $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
+
+posix_right: posix_only
+ rm -fr $(DESTDIR)$(TZDIR)-posix
+ ln -s $(TZDIR_BASENAME) $(DESTDIR)$(TZDIR)-posix || \
+ $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-posix posix_only
+ $(MAKE) $(INSTALLARGS) TZDIR=$(TZDIR)-leaps right_only
+
+# This obsolescent rule is present for backwards compatibility with
+# tz releases 2014g through 2015g. It should go away eventually.
+posix_packrat:
+ $(MAKE) $(INSTALLARGS) PACKRATDATA=backzone posix_only
+
+zones: $(REDO)
+
+libtz.a: $(LIBOBJS)
+ $(AR) ru $@ $(LIBOBJS)
+ $(RANLIB) $@
+
+date: $(DATEOBJS)
+ $(CC) -o $@ $(CFLAGS) $(LDFLAGS) $(DATEOBJS) $(LDLIBS)
+
+tzselect: tzselect.ksh
+ sed \
+ -e 's|#!/bin/bash|#!$(KSHELL)|g' \
+ -e 's|AWK=[^}]*|AWK=$(AWK)|g' \
+ -e 's|\(PKGVERSION\)=.*|\1='\''($(PACKAGE)) '\''|' \
+ -e 's|\(REPORT_BUGS_TO\)=.*|\1=$(BUGEMAIL)|' \
+ -e 's|TZDIR=[^}]*|TZDIR=$(TZDIR)|' \
+ -e 's|\(TZVERSION\)=.*|\1=$(VERSION)|' \
+ <$? >$@
+ chmod +x $@
+
+check: check_character_set check_white_space check_links check_sorted \
+ check_tables check_web
+
+check_character_set: $(ENCHILADA)
+ LC_ALL=en_US.utf8 && export LC_ALL && \
+ sharp='#' && \
+ ! grep -Env $(SAFE_LINE) Makefile $(MANS) date.1 $(MANTXTS) \
+ $(MISC) $(SOURCES) $(WEB_PAGES) && \
+ ! grep -Env $(SAFE_SHARP_LINE) $(TDATA) backzone \
+ leapseconds yearistype.sh zone.tab && \
+ ! grep -Env $(OK_LINE) $(ENCHILADA)
+
+check_white_space: $(ENCHILADA)
+ ! grep -En ' '$(TAB_CHAR)"|$$(printf '[\f\r\v]')" $(ENCHILADA)
+ ! grep -n '[[:space:]]$$' $(ENCHILADA)
+
+CHECK_CC_LIST = { n = split($$1,a,/,/); for (i=2; i<=n; i++) print a[1], a[i]; }
+
+check_sorted: backward backzone iso3166.tab zone.tab zone1970.tab
+ $(AWK) '/^Link/ {print $$3}' backward | LC_ALL=C sort -cu
+ $(AWK) '/^Zone/ {print $$2}' backzone | LC_ALL=C sort -cu
+ $(AWK) '/^[^#]/ {print $$1}' iso3166.tab | LC_ALL=C sort -cu
+ $(AWK) '/^[^#]/ {print $$1}' zone.tab | LC_ALL=C sort -c
+ $(AWK) '/^[^#]/ {print substr($$0, 1, 2)}' zone1970.tab | \
+ LC_ALL=C sort -c
+ $(AWK) '/^[^#]/ $(CHECK_CC_LIST)' zone1970.tab | \
+ LC_ALL=C sort -cu
+
+check_links: checklinks.awk $(TDATA)
+ $(AWK) -f checklinks.awk $(TDATA)
+
+check_tables: checktab.awk $(PRIMARY_YDATA) $(ZONETABLES)
+ for tab in $(ZONETABLES); do \
+ $(AWK) -f checktab.awk -v zone_table=$$tab $(PRIMARY_YDATA) \
+ || exit; \
+ done
+
+check_web: $(WEB_PAGES)
+ $(VALIDATE_ENV) $(VALIDATE) $(VALIDATE_FLAGS) $(WEB_PAGES)
+
+clean_misc:
+ rm -f core *.o *.out \
+ date tzselect version.h zdump zic yearistype libtz.a
+clean: clean_misc
+ rm -fr tzpublic
+
+maintainer-clean: clean
+ @echo 'This command is intended for maintainers to use; it'
+ @echo 'deletes files that may need special tools to rebuild.'
+ rm -f leapseconds $(MANTXTS) *.asc *.tar.gz
+
+names:
+ @echo $(ENCHILADA)
+
+public: check check_public $(CHECK_TIME_T_ALTERNATIVES) \
+ tarballs signatures
+
+date.1.txt: date.1
+newctime.3.txt: newctime.3
+newstrftime.3.txt: newstrftime.3
+newtzset.3.txt: newtzset.3
+time2posix.3.txt: time2posix.3
+tzfile.5.txt: tzfile.5
+tzselect.8.txt: tzselect.8
+zdump.8.txt: zdump.8
+zic.8.txt: zic.8
+
+$(MANTXTS): workman.sh
+ LC_ALL=C sh workman.sh `expr $@ : '\(.*\)\.txt$$'` >$@
+
+# Set the time stamps to those of the git repository, if available,
+# and if the files have not changed since then.
+# This uses GNU 'touch' syntax 'touch -d at N FILE',
+# where N is the number of seconds since 1970.
+# If git or GNU 'touch' is absent, don't bother to sync with git timestamps.
+# Also, set the timestamp of each prebuilt file like 'leapseconds'
+# to be the maximum of the files it depends on.
+set-timestamps.out: $(ENCHILADA)
+ rm -f $@
+ if files=`git ls-files $(ENCHILADA)` && \
+ touch -md @1 test.out; then \
+ rm -f test.out && \
+ for file in $$files; do \
+ if git diff --quiet $$file; then \
+ time=`git log -1 --format='tformat:%ct' $$file` && \
+ touch -cmd @$$time $$file; \
+ else \
+ echo >&2 "$$file: warning: does not match repository"; \
+ fi || exit; \
+ done; \
+ fi
+ touch -cmr `ls -t $(LEAP_DEPS) | sed 1q` leapseconds
+ for file in `ls $(MANTXTS) | sed 's/\.txt$$//'`; do \
+ touch -cmr `ls -t $$file workman.sh | sed 1q` $$file.txt || \
+ exit; \
+ done
+ touch $@
+
+# The zics below ensure that each data file can stand on its own.
+# We also do an all-files run to catch links to links.
+
+check_public:
+ $(MAKE) maintainer-clean
+ $(MAKE) "CFLAGS=$(GCC_DEBUG_FLAGS)" ALL
+ mkdir tzpublic
+ for i in $(TDATA) ; do \
+ $(zic) -v -d tzpublic $$i 2>&1 || exit; \
+ done
+ $(zic) -v -d tzpublic $(TDATA)
+ rm -fr tzpublic
+
+# Check that the code works under various alternative
+# implementations of time_t.
+check_time_t_alternatives:
+ if diff -q Makefile Makefile 2>/dev/null; then \
+ quiet_option='-q'; \
+ else \
+ quiet_option=''; \
+ fi && \
+ zones=`$(AWK) '/^[^#]/ { print $$3 }' <zone1970.tab` && \
+ for type in $(TIME_T_ALTERNATIVES); do \
+ mkdir -p tzpublic/$$type && \
+ $(MAKE) clean_misc && \
+ $(MAKE) TOPDIR=`pwd`/tzpublic/$$type \
+ CFLAGS='$(CFLAGS) -Dtime_tz='"'$$type'" \
+ REDO='$(REDO)' \
+ install && \
+ diff $$quiet_option -r \
+ tzpublic/int64_t/etc/zoneinfo \
+ tzpublic/$$type/etc/zoneinfo && \
+ case $$type in \
+ int32_t) range=-2147483648,2147483647;; \
+ uint32_t) range=0,4294967296;; \
+ int64_t) continue;; \
+ *u*) range=0,10000000000;; \
+ *) range=-10000000000,10000000000;; \
+ esac && \
+ echo checking $$type zones ... && \
+ tzpublic/int64_t/etc/zdump -V -t $$range $$zones \
+ >tzpublic/int64_t.out && \
+ tzpublic/$$type/etc/zdump -V -t $$range $$zones \
+ >tzpublic/$$type.out && \
+ diff -u tzpublic/int64_t.out tzpublic/$$type.out \
+ || exit; \
+ done
+ rm -fr tzpublic
+
+tarballs: tzcode$(VERSION).tar.gz tzdata$(VERSION).tar.gz
+
+tzcode$(VERSION).tar.gz: set-timestamps.out
+ LC_ALL=C && export LC_ALL && \
+ tar $(TARFLAGS) -cf - \
+ $(COMMON) $(DOCS) $(SOURCES) | \
+ gzip $(GZIPFLAGS) > $@
+
+tzdata$(VERSION).tar.gz: set-timestamps.out
+ LC_ALL=C && export LC_ALL && \
+ tar $(TARFLAGS) -cf - $(COMMON) $(DATA) $(MISC) | \
+ gzip $(GZIPFLAGS) > $@
+
+signatures: tzcode$(VERSION).tar.gz.asc tzdata$(VERSION).tar.gz.asc
+
+tzcode$(VERSION).tar.gz.asc: tzcode$(VERSION).tar.gz
+ gpg --armor --detach-sign $?
+
+tzdata$(VERSION).tar.gz.asc: tzdata$(VERSION).tar.gz
+ gpg --armor --detach-sign $?
+
+typecheck:
+ $(MAKE) clean
+ for i in "long long" unsigned; \
+ do \
+ $(MAKE) CFLAGS="-DTYPECHECK -D__time_t_defined -D_TIME_T \"-Dtime_t=$$i\"" ; \
+ ./zdump -v Europe/Rome ; \
+ $(MAKE) clean ; \
+ done
+
+zonenames: $(TDATA)
+ @$(AWK) '/^Zone/ { print $$2 } /^Link/ { print $$3 }' $(TDATA)
+
+asctime.o: private.h tzfile.h
+date.o: private.h
+difftime.o: private.h
+localtime.o: private.h tzfile.h
+strftime.o: private.h tzfile.h
+zdump.o: version.h
+zic.o: private.h tzfile.h version.h
+
+.KEEP_STATE:
+
+.PHONY: ALL INSTALL all
+.PHONY: check check_character_set check_links
+.PHONY: check_public check_sorted check_tables
+.PHONY: check_time_t_alternatives check_web check_white_space clean clean_misc
+.PHONY: install install_data maintainer-clean names
+.PHONY: posix_only posix_packrat posix_right
+.PHONY: public right_only right_posix signatures tarballs typecheck
+.PHONY: zonenames zones
Copied: vendor/tzcode/2016f/NEWS (from rev 7736, vendor/tzcode/dist/NEWS)
===================================================================
--- vendor/tzcode/2016f/NEWS (rev 0)
+++ vendor/tzcode/2016f/NEWS 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,3541 @@
+News for the tz database
+
+Release 2016f - 2016-07-05 16:26:51 +0200
+
+ Changes affecting future time stamps
+
+ The Egyptian government changed its mind on short notice, and
+ Africa/Cairo will not introduce DST starting 2016-07-07 after all.
+ (Thanks to Mina Samuel.)
+
+ Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00.
+ (Thanks to Stepan Golosunov.)
+
+ Changes to past and future time stamps
+
+ Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone
+ abbreviations instead of invented ones.
+
+ Changes affecting past time stamps
+
+ Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00.
+ (Thanks to Stepan Golosunov.)
+
+
+Release 2016e - 2016-06-14 08:46:16 -0700
+
+ Changes affecting future time stamps
+
+ Africa/Cairo observes DST in 2016 from July 7 to the end of October.
+ Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.)
+ For future years, guess April's last Thursday to October's last
+ Thursday except for Ramadan.
+
+ Changes affecting past time stamps
+
+ Locations while uninhabited now use '-00', not 'zzz', as a
+ placeholder time zone abbreviation. This is inspired by Internet
+ RFC 3339 and is more consistent with numeric time zone
+ abbreviations already used elsewhere. The change affects several
+ arctic and antarctic locations, e.g., America/Cambridge_Bay before
+ 1920 and Antarctica/Troll before 2005.
+
+ Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was
+ at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.)
+
+ Changes to code
+
+ zic now outputs a dummy transition at time 2**31 - 1 in zones
+ whose POSIX-style TZ strings contain a '<'. This mostly works
+ around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>.
+ (Thanks to Zhanibek Adilbekov for reporting the Qt bug.)
+
+ Changes affecting documentation and commentary
+
+ tz-link.htm says why governments should give plenty of notice for
+ time zone or DST changes, and refers to Matt Johnson's blog post.
+
+ tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.)
+
+
+Release 2016d - 2016-04-17 22:50:29 -0700
+
+ Changes affecting future time stamps
+
+ America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
+ (Thanks to Alexander Krivenyshev for the heads-up.)
+
+ Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
+ (Thanks to Alexander Krivenyshev and Matt Johnson.)
+
+ New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers
+ Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29
+ at 02:00. (Thanks to Stepan Golosunov.)
+
+ Changes affecting past time stamps
+
+ New zone Europe/Kirov, split off from Europe/Volgograd. It covers
+ Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on
+ 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made
+ the same change. (Thanks to Stepan Golosunov.)
+
+ Russia and nearby locations had daylight-saving transitions on
+ 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on
+ 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan
+ Golosunov.)
+
+ Many corrections to historical time in Kazakhstan from 1991
+ through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's
+ invented time zone abbreviations with numeric abbreviations.
+
+ Changes to commentary
+
+ Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references).
+
+
+Release 2016c - 2016-03-23 00:51:27 -0700
+
+ Changes affecting future time stamps
+
+ Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.)
+
+ Chile reverts from permanent to seasonal DST. (Thanks to Juan
+ Correa for the heads-up, and to Tim Parenti for corrections.)
+ Guess that future transitions are August's and May's second
+ Saturdays at 24:00 mainland time. Also, call the period from
+ 2014-09-07 through 2016-05-14 daylight saving time instead of
+ standard time, as that seems more appropriate now.
+
+ Changes affecting past time stamps
+
+ Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to
+ +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed
+ from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26.
+ (Thanks to Stepan Golosunov.)
+
+ Changes to commentary
+
+ Several updates and URLs for historical and proposed Russian changes.
+ (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.)
+
+
+Release 2016b - 2016-03-12 17:30:14 -0800
+
+ Compatibility note
+
+ Starting with release 2016b, some data entries cause zic implementations
+ derived from tz releases 2005j through 2015e to issue warnings like
+ "time zone abbreviation differs from POSIX standard (+03)".
+ These warnings should not otherwise affect zic's output and can safely be
+ ignored on today's platforms, as the warnings refer to a restriction in
+ POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the
+ warnings is to upgrade to zic derived from tz releases 2015f and later.
+
+ Changes affecting future time stamps
+
+ New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
+ Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
+ 2016-03-27 at 02:00 local time. They need distinct zones since their
+ post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and
+ Altai Republic, Russia, which will switch from +06 to +07 on the same date
+ and local time. The Astrakhan change is already official; the others have
+ passed the first reading in the State Duma and are extremely likely.
+ Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00.
+ (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson
+ and Stepan Golosunov for followup.)
+
+ As a trial of a new system that needs less information to be made up,
+ the new zones use numeric time zone abbreviations like "+04"
+ instead of invented abbreviations like "ASTT".
+
+ Haiti will not observe DST in 2016. (Thanks to Jean Antoine via
+ Steffen Thorsen.)
+
+ Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
+ (Thanks to Hannah Kreitem.) Guess future transitions will be March's last
+ Saturday at 01:00, not March's last Friday at 24:00.
+
+ Changes affecting past time stamps
+
+ Europe/Chisinau observed DST during 1990, and switched from +04 to
+ +03 at 1990-05-06 02:00, instead of switching from +03 to +02.
+ (Thanks to Stepan Golosunov.)
+
+ 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not
+ KUYT/KUYST. (Thanks to Stepan Golosunov.)
+
+ Changes to code
+
+ tzselect's diagnostics and checking, and checktab.awk's checking,
+ have been improved. (Thanks to J William Piggott.)
+
+ tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.)
+
+ tzselect now tests Julian-date TZ settings more accurately.
+ (Thanks to J William Piggott.)
+
+ Changes to commentary
+
+ Comments in zone tables have been improved. (Thanks to J William Piggott.)
+
+ tzselect again limits its menu comments so that menus fit on a
+ 24x80 alphanumeric display.
+
+ A new web page tz-how-to.html. (Thanks to Bill Seymour.)
+
+ In the Theory file, the description of possible time zone abbreviations in
+ tzdata has been cleaned up, as the old description was unclear and
+ inconsistent. (Thanks to Alain Mouette for reporting the problem.)
+
+
+Release 2016a - 2016-01-26 23:28:02 -0800
+
+ Changes affecting future time stamps
+
+ America/Cayman will not observe daylight saving this year after all.
+ Revert our guess that it would. (Thanks to Matt Johnson.)
+
+ Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
+ (Thanks to Alexander Krivenyshev.)
+
+ Asia/Tehran now has DST predictions for the year 2038 and later,
+ to be March 21 00:00 to September 21 00:00. This is likely better
+ than predicting no DST, albeit off by a day every now and then.
+
+ Changes affecting past and future time stamps
+
+ America/Metlakatla switched from PST all year to AKST/AKDT on
+ 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.)
+
+ America/Santa_Isabel has been removed, and replaced with a
+ backward compatibility link to America/Tijuana. Its contents were
+ apparently based on a misreading of Mexican legislation.
+
+ Changes affecting past time stamps
+
+ Asia/Karachi's two transition times in 2002 were off by a minute.
+ (Thanks to Matt Johnson.)
+
+ Changes affecting build procedure
+
+ An installer can now combine leap seconds with use of the backzone file,
+ e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'.
+ The old 'make posix_packrat' rule is now marked as obsolescent.
+ (Thanks to Ian Abbott for an initial implementation.)
+
+ Changes affecting documentation and commentary
+
+ A new file LICENSE makes it easier to see that the code and data
+ are mostly public-domain. (Thanks to James Knight.) The three
+ non-public-domain files now use the current (3-clause) BSD license
+ instead of older versions of that license.
+
+ tz-link.htm mentions the BDE library (thanks to Andrew Paprocki),
+ CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section
+ on editing tz source files (with a mention of Sublime zoneinfo,
+ thanks to Gilmore Davidson).
+
+ The Theory and asia files now mention the 2015 book "The Global
+ Transformation of Time, 1870-1950", and cite a couple of reviews.
+
+ The America/Chicago entry now documents the informal use of US
+ central time in Fort Pierre, South Dakota. (Thanks to Rick
+ McDermid, Matt Johnson, and Steve Jones.)
+
+
+Release 2015g - 2015-10-01 00:39:51 -0700
+
+ Changes affecting future time stamps
+
+ Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25.
+ (Thanks to Fatih.)
+
+ Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time.
+ (Thanks to Alexander Krivenyshev.)
+
+ Fiji's 2016 fall-back transition is scheduled for January 17, not 24.
+ (Thanks to Ken Rylander.)
+
+ Fort Nelson, British Columbia will not fall back on 2015-11-01. It has
+ effectively been on MST (-0700) since it advanced its clocks on 2015-03-08.
+ New zone America/Fort_Nelson. (Thanks to Matt Johnson.)
+
+ Changes affecting past time stamps
+
+ Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00.
+
+ Changes affecting code
+
+ localtime no longer mishandles America/Anchorage after 2037.
+ (Thanks to Bradley White for reporting the bug.)
+
+ On hosts with signed 32-bit time_t, localtime no longer mishandles
+ Pacific/Fiji after 2038-01-16 14:00 UTC.
+
+ The localtime module allows the variables 'timezone', 'daylight',
+ and 'altzone' to be in common storage shared with other modules,
+ and declares them in case the system <time.h> does not.
+ (Problems reported by Kees Dekker.)
+
+ On platforms with tm_zone, strftime.c now assumes it is not NULL.
+ This simplifies the code and is consistent with zdump.c.
+ (Problem reported by Christos Zoulas.)
+
+ Changes affecting documentation
+
+ The tzfile man page now documents that transition times denote the
+ starts (not the ends) of the corresponding time periods.
+ (Ambiguity reported by Bill Seymour.)
+
+
+Release 2015f - 2015-08-10 18:06:56 -0700
+
+ Changes affecting future time stamps
+
+ North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.)
+ The abbreviation remains "KST". (Thanks to Robert Elz.)
+
+ Uruguay no longer observes DST. (Thanks to Steffen Thorsen
+ and Pablo Camargo.)
+
+ Changes affecting past and future time stamps
+
+ Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC.
+ (Thanks to Roman Tudos.)
+
+ Changes affecting data format and code
+
+ zic's '-y YEARISTYPE' option is no longer documented. The TYPE
+ field of a Rule line should now be '-'; the old values 'even',
+ 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented.
+ Although the implementation has not changed, these features do not
+ work in the default installation, they are not used in the data,
+ and they are now considered obsolescent.
+
+ zic now checks that two rules don't take effect at the same time.
+ (Thanks to Jon Skeet and Arthur David Olson.) Constraints on
+ simultaneity are now documented.
+
+ The two characters '%z' in a zone format now stand for the UTC
+ offset, e.g., '-07' for seven hours behind UTC and '+0530' for
+ five hours and thirty minutes ahead. This better supports time
+ zone abbreviations conforming to POSIX.1-2001 and later.
+
+ Changes affecting installed data files
+
+ Comments for America/Halifax and America/Glace_Bay have been improved.
+ (Thanks to Brian Inglis.)
+
+ Data entries have been simplified for Atlantic/Canary, Europe/Simferopol,
+ Europe/Sofia, and Europe/Tallinn. This yields slightly smaller
+ installed data files for Europe/Simferopol and Europe/Tallinn.
+ It does not affect timestamps. (Thanks to Howard Hinnant.)
+
+ Changes affecting code
+
+ zdump and zic no longer warn about valid time zone abbreviations
+ like '-05'.
+
+ Some Visual Studio 2013 warnings have been suppressed.
+ (Thanks to Kees Dekker.)
+
+ 'date' no longer sets the time of day and its -a, -d, -n and -t
+ options have been removed. Long obsolescent, the implementation
+ of these features had porting problems. Builders no longer need
+ to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H.
+ (Thanks to Kees Dekker for pointing out the problem.)
+
+ Changes affecting documentation
+
+ The Theory file mentions naming issues earlier, as these seem to be
+ poorly publicized (thanks to Gilmore Davidson for reporting the problem).
+
+ tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant).
+
+ Mention that Herbert Samuel introduced the term "Summer Time".
+
+
+Release 2015e - 2015-06-13 10:56:02 -0700
+
+ Changes affecting future time stamps
+
+ Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00,
+ not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.)
+
+ Assume Cayman Islands will observe DST starting next year, using US rules.
+ Although it isn't guaranteed, it is the most likely.
+
+ Changes affecting data format
+
+ The file 'iso3166.tab' now uses UTF-8, so that its entries can better
+ spell the names of Åland Islands, Côte d'Ivoire, and Réunion.
+
+ Changes affecting code
+
+ When displaying data, tzselect converts it to the current locale's
+ encoding if the iconv command works. (Problem reported by random832.)
+
+ tzselect no longer mishandles Dominica, fixing a bug introduced
+ in Release 2014f. (Problem reported by Owen Leibman.)
+
+ zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\".
+ This fixes a bug introduced in Release 2014f.
+ (Problem reported by Leonardo Chiquitto.)
+
+
+Release 2015d - 2015-04-24 08:09:46 -0700
+
+ Changes affecting future time stamps
+
+ Egypt will not observe DST in 2015 and will consider canceling it
+ permanently. For now, assume no DST indefinitely.
+ (Thanks to Ahmed Nazmy and Tim Parenti.)
+
+ Changes affecting past time stamps
+
+ America/Whitehorse switched from UTC-9 to UTC-8 on 1967-05-28, not
+ 1966-07-01. Also, Yukon's time zone history is documented better.
+ (Thanks to Brian Inglis and Dennis Ferguson.)
+
+ Change affecting past and future time zone abbreviations
+
+ The abbreviations for Hawaii-Aleutian standard and daylight times
+ have been changed from HAST/HADT to HST/HDT, as per US Government
+ Printing Office style. This affects only America/Adak since 1983,
+ as America/Honolulu was already using the new style.
+
+ Changes affecting code
+
+ zic has some minor performance improvements.
+
+
+Release 2015c - 2015-04-11 08:55:55 -0700
+
+ Changes affecting future time stamps
+
+ Egypt's spring-forward transition is at 24:00 on April's last Thursday,
+ not 00:00 on April's last Friday. 2015's transition will therefore be on
+ Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes
+ apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.)
+
+ Changes affecting past time stamps
+
+ The following changes affect some pre-1991 Chile-related time stamps
+ in America/Santiago, Antarctica/Palmer, and Pacific/Easter.
+
+ The 1910 transition was January 10, not January 1.
+
+ The 1918 transition was September 10, not September 1.
+
+ The UTC-4 time observed from 1932 to 1942 is now considered to be
+ standard time, not year-round DST.
+
+ Santiago observed DST (UTC-3) from 1946-07-15 through 1946-08-31,
+ then reverted to standard time, then switched its time zone to
+ UTC-5 on 1947-04-01.
+
+ Assume transitions before 1968 were at 00:00, since we have no data
+ saying otherwise.
+
+ The spring 1988 transition was 1988-10-09, not 1988-10-02.
+ The fall 1990 transition was 1990-03-11, not 1990-03-18.
+
+ Assume no UTC offset change for Pacific/Easter on 1890-01-01,
+ and omit all transitions on Pacific/Easter from 1942 through 1946
+ since we have no data suggesting that they existed.
+
+ One more zone has been turned into a link, as it differed
+ from an existing zone only for older time stamps. As usual,
+ this change affects UTC offsets in pre-1970 time stamps only.
+ The zone's old contents have been moved to the 'backzone' file.
+ The affected zone is America/Montreal.
+
+ Changes affecting commentary
+
+ Mention the TZUpdater tool.
+
+ Mention "The Time Now". (Thanks to Brandon Ramsey.)
+
+
+Release 2015b - 2015-03-19 23:28:11 -0700
+
+ Changes affecting future time stamps
+
+ Mongolia will start observing DST again this year, from the last
+ Saturday in March at 02:00 to the last Saturday in September at 00:00.
+ (Thanks to Ganbold Tsagaankhuu.)
+
+ Palestine will start DST on March 28, not March 27. Also,
+ correct the fall 2014 transition from September 26 to October 24.
+ Adjust future predictions accordingly. (Thanks to Steffen Thorsen.)
+
+ Changes affecting past time stamps
+
+ The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a
+ regression. (Thanks to Stuart Bishop for reporting the problem.)
+
+ Some more zones have been turned into links, when they differed
+ from existing zones only for older time stamps. As usual,
+ these changes affect UTC offsets in pre-1970 time stamps only.
+ Their old contents have been moved to the 'backzone' file.
+ The affected zones are: America/Antigua, America/Cayman,
+ Pacific/Midway, and Pacific/Saipan.
+
+ Changes affecting time zone abbreviations
+
+ Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD".
+ (Thanks to Hank W.)
+
+ Changes affecting code
+
+ Fix integer overflow bug in reference 'mktime' implementation.
+ (Problem reported by Jörg Richter.)
+
+ Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries
+ to be used in the same executable as standard-library time_t functions.
+ (Problems reported by Bradley White.)
+
+ Changes affecting commentary
+
+ Cite the recent Mexican decree changing Quintana Roo's time zone.
+ (Thanks to Carlos Raúl Perasso.)
+
+ Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.)
+
+ Update info about Mars time.
+
+
+Release 2015a - 2015-01-29 22:35:20 -0800
+
+ Changes affecting future time stamps
+
+ The Mexican state of Quintana Roo, represented by America/Cancun,
+ will shift from Central Time with DST to Eastern Time without DST
+ on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.)
+
+ Chile will not change clocks in April or thereafter; its new standard time
+ will be its old daylight saving time. This affects America/Santiago,
+ Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.)
+
+ New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49.
+ (Thanks to Tim Parenti.)
+
+ Changes affecting past time stamps
+
+ Iceland observed DST in 1919 and 1921, and its 1939 fallback
+ transition was Oct. 29, not Nov. 29. Remove incorrect data from
+ Shanks about time in Iceland between 1837 and 1908.
+
+ Some more zones have been turned into links, when they differed
+ from existing zones only for older time stamps. As usual,
+ these changes affect UTC offsets in pre-1970 time stamps only.
+ Their old contents have been moved to the 'backzone' file.
+ The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait,
+ and Asia/Muscat.
+
+ Changes affecting code
+
+ tzalloc now scrubs time zone abbreviations compatibly with the way
+ that tzset always has, by replacing invalid bytes with '_' and by
+ shortening too-long abbreviations.
+
+ tzselect ports to POSIX awk implementations, no longer mishandles
+ POSIX TZ settings when GNU awk is used, and reports POSIX TZ
+ settings to the user. (Thanks to Stefan Kuhn.)
+
+ Changes affecting build procedure
+
+ 'make check' now checks for links to links in the data.
+ One such link (for Africa/Asmera) has been fixed.
+ (Thanks to Stephen Colebourne for pointing out the problem.)
+
+ Changes affecting commentary
+
+ The leapseconds file commentary now mentions the expiration date.
+ (Problem reported by Martin Burnicki.)
+
+ Update Mexican Library of Congress URL.
+
+
+Release 2014j - 2014-11-10 17:37:11 -0800
+
+ Changes affecting current and future time stamps
+
+ Turks & Caicos' switch from US eastern time to UTC-4 year-round
+ did not occur on 2014-11-02 at 02:00. It's currently scheduled
+ for 2015-11-01 at 02:00. (Thanks to Chris Walton.)
+
+ Changes affecting past time stamps
+
+ Many pre-1989 time stamps have been corrected for Asia/Seoul and
+ Asia/Pyongyang, based on sources for the Korean-language Wikipedia
+ entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no
+ longer guess that Pyongyang mimicked Seoul time after World War II,
+ as this is politically implausible.
+
+ Some more zones have been turned into links, when they differed
+ from existing zones only for older time stamps. As usual,
+ these changes affect UTC offsets in pre-1970 time stamps only.
+ Their old contents have been moved to the 'backzone' file.
+ The affected zones are: Africa/Addis_Ababa, Africa/Asmara,
+ Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala,
+ Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and
+ Indian/Mayotte.
+
+ Changes affecting commentary
+
+ The commentary is less enthusiastic about Shanks as a source,
+ and is more careful to distinguish UT from UTC.
+
+
+Release 2014i - 2014-10-21 22:04:57 -0700
+
+ Changes affecting future time stamps
+
+ Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00.
+ (Thanks to Ken Rylander for the heads-up.) Guess that future
+ years will use a similar pattern.
+
+ A new Zone Pacific/Bougainville, for the part of Papua New Guinea
+ that plans to switch from UTC+10 to UTC+11 on 2014-12-28 at 02:00.
+ (Thanks to Kiley Walbom for the heads-up.)
+
+ Changes affecting time zone abbreviations
+
+ Since Belarus is not changing its clocks even though Moscow is,
+ the time zone abbreviation in Europe/Minsk is changing from FET
+ to its more-traditional value MSK on 2014-10-26 at 01:00.
+ (Thanks to Alexander Bokovoy for the heads-up about Belarus.)
+
+ The new abbreviation IDT stands for the pre-1976 use of UT+8 in
+ Indochina, to distinguish it better from ICT (UT+7).
+
+ Changes affecting past time stamps
+
+ Many time stamps have been corrected for Asia/Ho_Chi_Minh before 1976
+ (thanks to Trần Ngọc Quân for an indirect pointer to Trần Tiến Bình's
+ authoritative book). Asia/Ho_Chi_Minh has been added to
+ zone1970.tab, to give tzselect users in Vietnam two choices,
+ since north and south Vietnam disagreed after our 1970 cutoff.
+
+ Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as
+ they differed from existing zones only for older time stamps. As
+ usual, these changes affect pre-1970 time stamps only. Their old
+ contents have been moved to the 'backzone' file.
+
+ Changes affecting code
+
+ The time-related library functions now set errno on failure, and
+ some crashes in the new tzalloc-related library functions have
+ been fixed. (Thanks to Christos Zoulas for reporting most of
+ these problems and for suggesting fixes.)
+
+ If USG_COMPAT is defined and the requested time stamp is standard time,
+ the tz library's localtime and mktime functions now set the extern
+ variable timezone to a value appropriate for that time stamp; and
+ similarly for ALTZONE, daylight saving time, and the altzone variable.
+ This change is a companion to the tzname change in 2014h, and is
+ designed to make timezone and altzone more compatible with tzname.
+
+ The tz library's functions now set errno to EOVERFLOW if they fail
+ because the result cannot be represented. ctime and ctime_r now
+ return NULL and set errno when a time stamp is out of range, rather
+ than having undefined behavior.
+
+ Some bugs associated with the new 2014g functions have been fixed.
+ This includes a bug that largely incapacitated the new functions
+ time2posix_z and posix2time_z. (Thanks to Christos Zoulas.)
+ It also includes some uses of uninitialized variables after tzalloc.
+ The new code uses the standard type 'ssize_t', which the Makefile
+ now gives porting advice about.
+
+ Changes affecting commentary
+
+ Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis).
+
+
+Release 2014h - 2014-09-25 18:59:03 -0700
+
+ Changes affecting past time stamps
+
+ America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28.
+
+ Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01,
+ not 1920-01-06. The old entry was based on a misinterpretation of Shanks.
+
+ Some more zones have been turned into links, when they differed
+ from existing zones only for older time stamps. As usual,
+ these changes affect UTC offsets in pre-1970 time stamps only.
+ Their old contents have been moved to the 'backzone' file.
+ The affected zones are: Africa/Blantyre, Africa/Bujumbura,
+ Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi,
+ Africa/Lusaka, Africa/Maseru, and Africa/Mbabane.
+
+ Changes affecting code
+
+ zdump -V and -v now output gmtoff= values on all platforms,
+ not merely on platforms defining TM_GMTOFF.
+
+ The tz library's localtime and mktime functions now set tzname to a value
+ appropriate for the requested time stamp, and zdump now uses this
+ on platforms not defining TM_ZONE, fixing a 2014g regression.
+ (Thanks to Tim Parenti for reporting the problem.)
+
+ The tz library no longer sets tzname if localtime or mktime fails.
+
+ zdump -c no longer mishandles transitions near year boundaries.
+ (Thanks to Tim Parenti for reporting the problem.)
+
+ An access to uninitalized data has been fixed.
+ (Thanks to Jörg Richter for reporting the problem.)
+
+ When THREAD_SAFE is defined, the code ports to the C11 memory model.
+ A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined
+ and two threads race to initialize data used by gmtime-like functions.
+ (Thanks to Andy Heninger for reporting the problems.)
+
+ Changes affecting build procedure
+
+ 'make check' now checks better for properly-sorted data.
+
+ Changes affecting documentation and commentary
+
+ zdump's gmtoff=N output is now documented, and its isdst=D output
+ is now documented to possibly output D values other than 0 or 1.
+
+ zdump -c's treatment of years is now documented to use the
+ Gregorian calendar and Universal Time without leap seconds,
+ and its behavior at cutoff boundaries is now documented better.
+ (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.)
+
+ Programs are now documented to use the proleptic Gregorian calendar.
+ (Thanks to Alan Barrett for the suggestion.)
+
+ Fractional-second GMT offsets have been documented for civil time
+ in 19th-century Chennai, Jakarta, and New York.
+
+
+Release 2014g - 2014-08-28 12:31:23 -0700
+
+ Changes affecting future time stamps
+
+ Turks & Caicos is switching from US eastern time to UTC-4 year-round,
+ modeled as a switch from EST/EDT to AST on 2014-11-02 at 02:00.
+ [As noted in 2014j, this switch was later delayed.]
+
+ Changes affecting past time stamps
+
+ Time in Russia or the USSR before 1926 or so has been corrected by
+ a few seconds in the following zones: Asia/Irkutsk,
+ Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi,
+ Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For
+ Asia/Yekaterinburg the correction is a few minutes. (Thanks to
+ Vladimir Karpinsky.)
+
+ The Portuguese decree of 1911-05-26 took effect on 1912-01-01.
+ This affects 1911 time stamps in Africa/Bissau, Africa/Luanda,
+ Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912
+ GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32.
+ (Thanks to Stephen Colebourne for pointing to the decree.)
+
+ Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59.
+
+ A new file 'backzone' contains data which may appeal to
+ connoisseurs of old time stamps, although it is out of scope for
+ the tz database, is often poorly sourced, and contains some data
+ that is known to be incorrect. The new file is not recommended
+ for ordinary use and its entries are not installed by default.
+ (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and
+ Isle of Man entries.)
+
+ Some more zones have been turned into links, when they differed
+ from existing zones only for older time stamps. As usual,
+ these changes affect UTC offsets in pre-1970 time stamps only.
+ Their old contents have been moved to the 'backzone' file.
+ The affected zones are: Africa/Bangui, Africa/Brazzaville,
+ Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda,
+ Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo.
+
+ Changes affecting code
+
+ Unless NETBSD_INSPIRED is defined to 0, the tz library now
+ supplies functions for creating and using objects that represent
+ time zones. The new functions are tzalloc, tzfree, localtime_rz,
+ mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and
+ time2posix_z. They are intended for performance: for example,
+ localtime_rz (unlike localtime_r) is trivially thread-safe without
+ locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired
+ functions, and to Alan Barrett and Jonathan Lennox for helping to
+ debug the change.)
+
+ zdump now builds with the tz library unless USE_LTZ is defined to 0,
+ This lets zdump use tz features even if the system library lacks them.
+ To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0
+ TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='.
+
+ zdump now uses localtime_rz if available, as it's significantly faster,
+ and it can help zdump better diagnose invalid time zone names.
+ Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ
+ defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is
+ not available, zdump now uses localtime_r and tzset if available,
+ as this is a bit cleaner and faster than plain localtime. Compile
+ with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system
+ lacks these two functions.
+
+ If THREAD_SAFE is defined to 1, the tz library is now thread-safe.
+ Although not needed for tz's own applications, which are single-threaded,
+ this supports POSIX better if the tz library is used in multithreaded apps.
+
+ Some crashes have been fixed when zdump or the tz library is given
+ invalid or outlandish input.
+
+ The tz library no longer mishandles leap seconds on platforms with
+ unsigned time_t in time zones that lack ordinary transitions after 1970.
+
+ The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not
+ already defined, to make it easier to configure on common platforms.
+ Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this.
+
+ Unless the new macro UNINIT_TRAP is defined to 1, the tz code now
+ assumes that reading uninitialized memory yields garbage values
+ but does not cause other problems such as traps.
+
+ If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now
+ more likely to guess right for ambiguous time stamps near
+ transitions where tm_isdst does not change.
+
+ If HAVE_STRFTIME_L is defined to 1, the tz library now defines
+ strftime_l for compatibility with recent versions of POSIX.
+ Only the C locale is supported, though. HAVE_STRFTIME_L defaults
+ to 1 on recent POSIX versions, and to 0 otherwise.
+
+ tzselect -c now uses a hybrid distance measure that works better
+ in Africa. (Thanks to Alan Barrett for noting the problem.)
+
+ The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used,
+ or when time_tz is defined.
+
+ When HAVE_UTMPX_H is set the 'date' command now builds on systems
+ whose <utmpx.h> file does not define WTMPX_FILE, and when setting
+ the date it updates the wtmpx file if _PATH_WTMPX is defined.
+ This affects GNU/Linux and similar systems.
+
+ For easier maintenance later, some C code has been simplified,
+ some lint has been removed, and the code has been tweaked so that
+ plain 'make' is more likely to work.
+
+ The C type 'bool' is now used for boolean values, instead of 'int'.
+
+ The long-obsolete LOCALE_HOME code has been removed.
+
+ The long-obsolete 'gtime' function has been removed.
+
+ Changes affecting build procedure
+
+ 'zdump' no longer links in ialloc.o, as it's not needed.
+
+ 'make check_time_t_alternatives' no longer assumes GNU diff.
+
+ Changes affecting distribution tarballs
+
+ The files checktab.awk and zoneinfo2tdf.pl are now distributed in
+ the tzdata tarball instead of the tzcode tarball, since they help
+ maintain the data. The NEWS and Theory files are now also
+ distributed in the tzdata tarball, as they're relevant for data.
+ (Thanks to Alan Barrett for pointing this out.) Also, the
+ leapseconds.awk file is no longer distributed in the tzcode
+ tarball, since it belongs in the tzdata tarball (where 2014f
+ inadvertently also distributed it).
+
+ Changes affecting documentation and commentary
+
+ A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for
+ suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms
+ for debugging it.)
+
+ The man pages have been updated to use function prototypes,
+ to document thread-safe variants like localtime_r, and to document
+ the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and
+ mktime_z.
+
+ The fields in Link lines have been renamed to be more descriptive
+ and more like the parameters of 'ln'. LINK-FROM has become TARGET,
+ and LINK-TO has become LINK-NAME.
+
+ tz-link.htm mentions the IETF's tzdist working group; Windows
+ Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab.
+
+ Some broken URLs have been fixed in the commentary. (Thanks to
+ Lester Caine.)
+
+ Commentary about Philippines DST has been updated, and commentary
+ on pre-1970 time in India has been added.
+
+
+Release 2014f - 2014-08-05 17:42:36 -0700
+
+ Changes affecting future time stamps
+
+ Russia will subtract an hour from most of its time zones on 2014-10-26
+ at 02:00 local time. (Thanks to Alexander Krivenyshev.)
+ There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky
+ Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug
+ (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast
+ (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic
+ (Europe/Samara) are not changing their clocks. The changed zones are
+ Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd,
+ Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk,
+ Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga,
+ Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours
+ subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected,
+ but not its UTC offset. Two zones are added: Asia/Chita (split
+ from Asia/Yakutsk, and also with two hours subtracted) and
+ Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour
+ subtracted). (Thanks to Tim Parenti for much of the above.)
+
+ Changes affecting time zone abbreviations
+
+ Australian eastern time zone abbreviations are now AEST/AEDT not EST,
+ and similarly for the other Australian zones. That is, for eastern
+ standard and daylight saving time the abbreviations are AEST and AEDT
+ instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT,
+ and AWST/AWDT are now used instead of the former CST, CWST, and WST.
+ This change does not affect UTC offsets, only time zone abbreviations.
+ (Thanks to Rich Tibbett and many others.)
+
+ Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UTC+7)
+ effective 2014-10-26 at 02:00 local time.
+
+ The time zone abbreviation for Xinjiang Time (observed in Ürümqi)
+ has been changed from URUT to XJT. (Thanks to Luther Ma.)
+
+ Prefer MSK/MSD for Moscow time in Russia, even in other cities.
+ Similarly, prefer EET/EEST for eastern European time in Russia.
+
+ Change time zone abbreviations in (western) Samoa to use "ST" and
+ "DT" suffixes, as this is more likely to match common practice.
+ Prefix "W" to (western) Samoa time when its standard-time offset
+ disagrees with that of American Samoa.
+
+ America/Metlakatla now uses PST, not MeST, to abbreviate its time zone.
+
+ Time zone abbreviations have been updated for Japan's two time
+ zones used 1896-1937. JWST now stands for Western Standard
+ Time, and JCST for Central Standard Time (formerly this was CJT).
+ These abbreviations are now used for time in Korea, Taiwan,
+ and Sakhalin while controlled by Japan.
+
+ Changes affecting past time stamps
+
+ China's five zones have been simplified to two, since the post-1970
+ differences in the other three seem to have been imaginary. The
+ zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been
+ removed; backwards-compatibility links still work, albeit with
+ different behaviors for time stamps before May 1980. Asia/Urumqi's
+ 1980 transition to UTC+8 has been removed, so that it is now at
+ UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl;
+ Treindl sent helpful translations of two papers by Guo Qingsheng.)
+
+ Some zones have been turned into links, when they differed from existing
+ zones only for older UTC offsets where data entries were likely invented.
+ These changes affect UTC offsets in pre-1970 time stamps only. This is
+ similar to the change in release 2013e, except this time for western
+ Africa. The affected zones are: Africa/Bamako, Africa/Banjul,
+ Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome,
+ Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and
+ Atlantic/St_Helena. This also affects the backwards-compatibility
+ link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne,
+ Tim Parenti, and David Patte for reporting problems in earlier
+ versions of this change.)
+
+ Asia/Shanghai's pre-standard-time UT offset has been changed from
+ 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its
+ transition to standard time has been changed from 1928 to 1901.
+
+ Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01,
+ then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945.
+ In 1946 it observed DST from 05-15 through 09-30; in 1947
+ from 04-15 through 10-31; and in 1979 from 07-01 through 09-30.
+ (Thanks to Yu-Cheng Chuang.)
+
+ Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950.
+
+ Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not
+ 10-03 at 00:00. (Thanks to Konstantin Hyppönen.)
+
+ Pacific/Pago_Pago has been changed from UTC-11:30 to UTC-11 for the period
+ from 1911 to 1950.
+
+ Pacific/Chatham has been changed to New Zealand standard time plus
+ 45 minutes for the period before 1957, reflecting a 1956 remark in
+ the New Zealand parliament.
+
+ Europe/Budapest has several pre-1946 corrections: in 1918 the transition
+ out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in
+ 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08
+ not 04-06 at 02:00; and there was no DST in 1920.
+
+ Africa/Accra is now assumed to have observed DST from 1920 through 1935.
+
+ Time in Russia before 1927 or so has been corrected by a few seconds in
+ the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi,
+ Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and
+ Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0
+ point. (Thanks to Vladimir Karpinsky for the Moscow changes.)
+
+ Changes affecting data format
+
+ A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data.
+ The new file's extended format allows multiple country codes per zone.
+ The older file is still installed but is deprecated; its format is
+ not changing and it will still be distributed for a while, but new
+ applications should use the new file.
+
+ The new file format simplifies maintenance of obscure locations.
+ To test this, it adds coverage for the Crozet Islands and the
+ Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.)
+
+ The file 'iso3166.tab' is planned to switch from ASCII to UTF-8.
+ It is still ASCII now, but commentary about the switch has been added.
+ The new file 'zone1970.tab' already uses UTF-8.
+
+ Changes affecting code
+
+ 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE
+ is defined. (Thanks to Elliott Hughes for reporting the problem.)
+
+ 'zic' no longer mishandles input when ignoring case in locales that
+ are not compatible with English, e.g., unibyte Turkish locales when
+ compiled with HAVE_GETTEXT.
+
+ Error diagnostics of 'zic' and 'yearistype' have been reworded so that
+ they no longer use ASCII '-' as if it were a dash.
+
+ 'zic' now rejects output file names that contain '.' or '..' components.
+ (Thanks to Tim Parenti for reporting the problem.)
+
+ 'zic -v' now warns about output file names that do not follow
+ POSIX rules, or that contain a digit or '.'. (Thanks to Arthur
+ David Olson for starting the ball rolling on this.)
+
+ Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0.
+
+ Changes affecting build procedure
+
+ 'zic' no longer links in localtime.o and asctime.o, as they're not needed.
+ (Thanks to John Cochran.)
+
+ Changes affecting documentation and commentary
+
+ The 'Theory' file documents legacy names, the longstanding
+ exceptions to the POSIX-inspired file name rules.
+
+ The 'zic' documentation clarifies the role of time types when
+ interpreting dates. (Thanks to Arthur David Olson.)
+
+ Documentation and commentary now prefer UTF-8 to US-ASCII,
+ allowing the use of proper accents in foreign words and names.
+ Code and data have not changed because of this. (Thanks to
+ Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug
+ this.)
+
+ Non-HTML documentation and commentary now use plain-text URLs instead of
+ HTML insertions, and are more consistent about bracketing URLs when they
+ are not already surrounded by white space. (Thanks to suggestions by
+ Steffen Nurpmeso.)
+
+ There is new commentary about Xujiahui Observatory, the five time-zone
+ project in China from 1918 to 1949, timekeeping in Japanese-occupied
+ Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the
+ warlord Jin Shuren in the data.
+
+ Commentary about the coverage of each Russian zone has been standardized.
+ (Thanks to Tim Parenti).
+
+ There is new commentary about contemporary timekeeping in Ethiopia.
+
+ Obsolete comments about a 2007 proposal for DST in Kuwait has been removed.
+
+ There is new commentary about time in Poland in 1919.
+
+ Proper credit has been given to DST inventor George Vernon Hudson.
+
+ Commentary about time in Metlakatla, AK and Resolute, NU has been
+ improved, with a new source for the former.
+
+ In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it
+ is uninhabited.
+
+ Commentary about permanent Antarctic bases has been updated.
+
+ Several typos have been corrected. (Thanks to Tim Parenti for
+ contributing some of these fixes.)
+
+ tz-link.htm now mentions the JavaScript libraries Moment Timezone,
+ TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up
+ from Matt Johnson.) Also, it mentions the Go 'latlong' package.
+ (Thanks to a heads-up from Dirkjan Ochtman.)
+
+ The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998
+ have been removed. These obsolescent US Naval Observatory entries were no
+ longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.)
+
+
+Release 2014e - 2014-06-12 21:53:52 -0700
+
+ Changes affecting near-future time stamps
+
+ Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00.
+ (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily
+ switch to standard time at 24:00 the last Thursday before Ramadan, and
+ back to DST at 00:00 the first Friday after Ramadan.
+
+ Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks
+ to Milamber Space Network.) Guess that from 2015 on Morocco will
+ temporarily switch to standard time at 03:00 the last Saturday before
+ Ramadan, and back to DST at 02:00 the first Saturday after Ramadan.
+
+ Changes affecting past time stamps
+
+ The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of
+ "MSD" for Moscow's double daylight time in summer 1921. Also, a typo
+ "VLASST" has been repaired to be "VLAST" for Vladivostok summer time
+ in 1991. (Thanks to Hank W. for reporting the problems.)
+
+ Changes affecting commentary
+
+ tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the
+ draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and
+ removes stale pointers to World Time Explorer and WORLDTIME.
+
+
+Release 2014d - 2014-05-27 21:34:40 -0700
+
+ Changes affecting code
+
+ zic no longer generates files containing time stamps before the Big Bang.
+ This works around GNOME bug 730332
+ <https://bugzilla.gnome.org/show_bug.cgi?id=730332>.
+ (Thanks to Leonardo Chiquitto for reporting the bug, and to
+ Arthur David Olson and James Cloos for suggesting improvements to the fix.)
+
+ Changes affecting documentation
+
+ tz-link.htm now mentions GNOME.
+
+
+Release 2014c - 2014-05-13 07:44:13 -0700
+
+ Changes affecting near-future time stamps
+
+ Egypt observes DST starting 2014-05-15 at 24:00.
+ (Thanks to Ahmad El-Dardiry and Gunther Vermier.)
+ Details have not been announced, except that DST will not be observed
+ during Ramadan. Guess that DST will stop during the same Ramadan dates as
+ Morocco, and that Egypt's future spring and fall transitions will be the
+ same as 2010 when it last observed DST, namely April's last Friday at
+ 00:00 to September's last Thursday at 23:00 standard time. Also, guess
+ that Ramadan transitions will be at 00:00 standard time.
+
+ Changes affecting code
+
+ zic now generates transitions for minimum time values, eliminating guesswork
+ when handling low-valued time stamps. (Thanks to Arthur David Olson.)
+
+ Port to Cygwin sans glibc. (Thanks to Arthur David Olson.)
+
+ Changes affecting commentary and documentation
+
+ Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.)
+
+
+Release 2014b - 2014-03-24 21:28:50 -0700
+
+ Changes affecting near-future time stamps
+
+ Crimea switches to Moscow time on 2014-03-30 at 02:00 local time.
+ (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU.
+
+ New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and
+ Bengt-Inge Larsson.) This is currently an approximation; a better version
+ will require the zic and localtime fixes mentioned below, and the plan is
+ to wait for a while until at least the zic fixes propagate.
+
+ Changes affecting code
+
+ 'zic' and 'localtime' no longer reject locations needing four transitions
+ per year for the foreseeable future. (Thanks to Andrew Main (Zefram).)
+ Also, 'zic' avoids some unlikely failures due to integer overflow.
+
+ Changes affecting build procedure
+
+ 'make check' now detects Rule lines defined but never used.
+ The NZAQ rules, an instance of this problem, have been removed.
+
+ Changes affecting commentary and documentation
+
+ Fix Tuesday/Thursday typo in description of time in Israel.
+ (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.)
+
+ Microsoft Windows 8.1 doesn't support tz database names. (Thanks
+ to Donald MacQueen.) Instead, the Microsoft Windows Store app
+ library supports them.
+
+ Add comments about Johnston Island time in the 1960s.
+ (Thanks to Lyle McElhaney.)
+
+ Morocco's 2014 DST start will be as predicted.
+ (Thanks to Sebastien Willemijns.)
+
+
+Release 2014a - 2014-03-07 23:30:29 -0800
+
+ Changes affecting near-future time stamps
+
+ Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for
+ the heads-up, and to Tim Parenti for simplifying the update.)
+
+ Changes affecting past time stamps
+
+ Fiji ended DST on 2014-01-19 at 02:00, not the previously-scheduled 03:00.
+ (Thanks to Steffen Thorsen.)
+
+ Ukraine switched from Moscow to Eastern European time on 1990-07-01
+ (not 1992-01-01), and observed DST during the entire next winter.
+ (Thanks to Vladimir in Moscow via Alois Treindl.)
+
+ In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03.
+ (Thanks to Avigdor Finkelstein.)
+
+ Changes affecting code
+
+ A uninitialized-storage bug in 'localtime' has been fixed.
+ (Thanks to Logan Chien.)
+
+ Changes affecting the build procedure
+
+ The settings for 'make check_web' now default to Ubuntu 13.10.
+
+ Changes affecting commentary and documentation
+
+ The boundary of the US Pacific time zone is given more accurately.
+ (Thanks to Alan Mintz.)
+
+ Chile's 2014 DST will be as predicted. (Thanks to José Miguel Garrido.)
+
+ Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Raúl Perasso.)
+
+ Better descriptions of countries with same time zone history as
+ Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.)
+
+ Several changes affect tz-link.htm, the main web page.
+
+ Mention Time.is (thanks to Even Scharning) and WX-now (thanks to
+ David Braverman).
+
+ Mention xCal (Internet RFC 6321) and jCal.
+
+ Microsoft has some support for tz database names.
+
+ CLDR data formats include both XML and JSON.
+
+ Mention Maggiolo's map of solar vs standard time.
+ (Thanks to Arthur David Olson.)
+
+ Mention TZ4Net. (Thanks to Matt Johnson.)
+
+ Mention the timezone-olson Haskell package.
+
+ Mention zeitverschiebung.net. (Thanks to Martin Jäger.)
+
+ Remove moribund links to daylight-savings-time.info and to
+ Simple Timer + Clocks.
+
+ Update two links. (Thanks to Oscar van Vlijmen.)
+
+ Fix some formatting glitches, e.g., remove random newlines from
+ abbr elements' title attributes.
+
+
+Release 2013i - 2013-12-17 07:25:23 -0800
+
+ Changes affecting near-future time stamps:
+
+ Jordan switches back to standard time at 00:00 on December 20, 2013.
+ The 2006-2011 transition schedule is planned to resume in 2014.
+ (Thanks to Steffen Thorsen.)
+
+ Changes affecting past time stamps:
+
+ In 2004, Cuba began DST on March 28, not April 4.
+ (Thanks to Steffen Thorsen.)
+
+ Changes affecting code
+
+ The compile-time flag NOSOLAR has been removed, as nowadays the
+ benefit of slightly shrinking runtime table size is outweighed by the
+ cost of disallowing potential future updates that exceed old limits.
+
+ Changes affecting documentation and commentary
+
+ The files solar87, solar88, and solar89 are no longer distributed.
+ They were a negative experiment - that is, a demonstration that
+ tz data can represent solar time only with some difficulty and error.
+ Their presence in the distribution caused confusion, as Riyadh
+ civil time was generally not solar time in those years.
+
+ tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.)
+
+
+Release 2013h - 2013-10-25 15:32:32 -0700
+
+ Changes affecting current and future time stamps:
+
+ Libya has switched its time zone back to UTC+2 without DST,
+ instead of UTC+1 with DST. (Thanks to Even Scharning.)
+
+ Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules.
+ (Thanks to Gwillim Law.)
+
+ Changes affecting future time stamps:
+
+ Acre and (we guess) western Amazonas will switch from UTC-4 to UTC-5
+ on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe.
+ (Thanks to Steffen Thorsen.)
+
+ Add entries for DST transitions in Morocco in the year 2038.
+ This avoids some year-2038 glitches introduced in 2013g.
+ (Thanks to Yoshito Umaoka for reporting the problem.)
+
+ Changes affecting API
+
+ The 'tzselect' command no longer requires the 'select' command,
+ and should now work with /bin/sh on more platforms. It also works
+ around a bug in BusyBox awk before version 1.21.0. (Thanks to
+ Patrick 'P. J.' McDermott and Alan Barrett.)
+
+ Changes affecting code
+
+ Fix localtime overflow bugs with 32-bit unsigned time_t.
+
+ zdump no longer assumes sscanf returns maximal values on overflow.
+
+ Changes affecting the build procedure
+
+ The builder can specify which programs to use, if any, instead of
+ 'ar' and 'ranlib', and libtz.a is now built locally before being
+ installed. (Thanks to Michael Forney.)
+
+ A dependency typo in the 'zdump' rule has been fixed.
+ (Thanks to Andrew Paprocki.)
+
+ The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f'
+ work as specified by POSIX.2-1992 or later; this is portable nowadays.
+
+ 'make clean' no longer removes 'leapseconds', since it's
+ host-independent and is part of the distribution.
+
+ The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed.
+
+ Changes affecting documentation and commentary
+
+ tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol
+ (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle).
+
+ Update URLs in tz-link page. Add URLs for Microsoft Windows, since
+ 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no
+ longer maintained) and for old advisories. SOFA now does C.
+
+Release 2013g - 2013-09-30 21:08:26 -0700
+
+ Changes affecting current and near-future time stamps
+
+ Morocco now observes DST from the last Sunday in March to the last
+ Sunday in October, not April to September respectively. (Thanks
+ to Steffen Thorsen.)
+
+ Changes affecting 'zic'
+
+ 'zic' now runs on platforms that lack both hard links and symlinks.
+ (Thanks to Theo Veenker for reporting the problem, for MinGW.)
+ Also, fix some bugs on platforms that lack hard links but have symlinks.
+
+ 'zic -v' again warns that Asia/Tehran has no POSIX environment variable
+ to predict the far future, fixing a bug introduced in 2013e.
+
+ Changes affecting the build procedure
+
+ The 'leapseconds' file is again put into the tzdata tarball.
+ Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to
+ Matt Burgess and Ian Abbott.) The timestamps of these and other
+ dependent files in tarballs are adjusted more consistently.
+
+ Changes affecting documentation and commentary
+
+ The README file is now part of the data tarball as well as the code.
+ It now states that files are public domain unless otherwise specified.
+ (Thanks to Andrew Main (Zefram) for asking for clarifications.)
+ Its details about the 1989 release moved to a place of honor near
+ the end of NEWS.
+
+
+Release 2013f - 2013-09-24 23:37:36 -0700
+
+ Changes affecting near-future time stamps
+
+ Tocantins will very likely not observe DST starting this spring.
+ (Thanks to Steffen Thorsen.)
+
+ Jordan will likely stay at UTC+3 indefinitely, and will not fall
+ back this fall.
+
+ Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.)
+
+ Changes affecting API
+
+ The types of the global variables 'timezone' and 'altzone' (if present)
+ have been changed back to 'long'. This is required for 'timezone'
+ by POSIX, and for 'altzone' by common practice, e.g., Solaris 11.
+ These variables were originally 'long' in the tz code, but were
+ mistakenly changed to 'time_t' in 1987; nobody reported the
+ incompatibility until now. The difference matters on x32, where
+ 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.)
+
+ Changes affecting the build procedure
+
+ Avoid long strings in leapseconds.awk to work around a mawk bug.
+ (Thanks to Cyril Baurand.)
+
+ Changes affecting documentation and commentary
+
+ New file 'NEWS' that contains release notes like this one.
+
+ Paraguay's law does not specify DST transition time; 00:00 is customary.
+ (Thanks to Waldemar Villamayor-Venialbo.)
+
+ Minor capitalization fixes.
+
+ Changes affecting version-control only
+
+ The experimental GitHub repository now contains annotated and
+ signed tags for recent releases, e.g., '2013e' for Release 2013e.
+ Releases are tagged starting with 2012e; earlier releases were
+ done differently, and tags would either not have a simple name or
+ not exactly match what was released.
+
+ 'make set-timestamps' is now simpler and a bit more portable.
+
+
+Release 2013e - 2013-09-19 23:50:04 -0700
+
+ Changes affecting near-future time stamps
+
+ This year Fiji will start DST on October 27, not October 20.
+ (Thanks to David Wheeler for the heads-up.) For now, guess that
+ Fiji will continue to spring forward the Sunday before the fourth
+ Monday in October.
+
+ Changes affecting current and future time zone abbreviations
+
+ Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian
+ time zone abbreviations since 1932. (Thanks to George Ziegler,
+ Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and
+ Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura,
+ Asia/Makassar, and Asia/Pontianak.
+
+ Use ART (UTC-3, standard time), rather than WARST (also UTC-3, but
+ daylight saving time) for San Luis, Argentina since 2009.
+
+ Changes affecting Godthåb time stamps after 2037 if version mismatch
+
+ Allow POSIX-like TZ strings where the transition time's hour can
+ range from -167 through 167, instead of the POSIX-required 0
+ through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the
+ new Fiji rules. This is a more-compact way to represent
+ far-future time stamps for America/Godthab, America/Santiago,
+ Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem,
+ Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by
+ this change. (Derived from a suggestion by Arthur David Olson.)
+
+ Allow POSIX-like TZ strings where daylight saving time is in
+ effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western
+ Argentina Summer Time all year. This supports a more-compact way
+ to represent the 2013d data for America/Argentina/San_Luis.
+ Because of the change for San Luis noted above this change does not
+ affect the current data. (Thanks to Andrew Main (Zefram) for
+ suggestions that improved this change.)
+
+ Where these two TZ changes take effect, there is a minor extension
+ to the tz file format in that it allows new values for the
+ embedded TZ-format string, and the tz file format version number
+ has therefore been increased from 2 to 3 as a precaution.
+ Version-2-based client code should continue to work as before for
+ all time stamps before 2038. Existing version-2-based client code
+ (tzcode, GNU/Linux, Solaris) has been tested on version-3-format
+ files, and typically works in practice even for time stamps after
+ 2037; the only known exception is America/Godthab.
+
+ Changes affecting time stamps before 1970
+
+ Pacific/Johnston is now a link to Pacific/Honolulu. This corrects
+ some errors before 1947.
+
+ Some zones have been turned into links, when they differ from existing
+ zones only in older data entries that were likely invented or that
+ differ only in LMT or transitions from LMT. These changes affect
+ only time stamps before 1943. The affected zones are:
+ Africa/Juba, America/Anguilla, America/Aruba, America/Dominica,
+ America/Grenada, America/Guadeloupe, America/Marigot,
+ America/Montserrat, America/St_Barthelemy, America/St_Kitts,
+ America/St_Lucia, America/St_Thomas, America/St_Vincent,
+ America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for
+ confirming that the old Europe/Vaduz zone was wrong and the new
+ link is better for WWII-era times.)
+
+ Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects
+ America/Cayman, America/Jamaica and America/Grand_Turk time stamps
+ from 1890 to 1912.
+
+ Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46.
+ This affects Europe/Zurich time stamps from 1853 to 1894. (Thanks
+ to Alois Treindl).
+
+ Change the date of the circa-1850 Zurich transition from 1849-09-12
+ to 1853-07-16, overriding Shanks with data from Messerli about
+ postal and telegraph time in Switzerland.
+
+ Changes affecting time zone abbreviations before 1970
+
+ For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932,
+ as Jakarta was called Batavia back then.
+
+ Changes affecting API
+
+ The 'zic' command now outputs a dummy transition when far-future
+ data can't be summarized using a TZ string, and uses a 402-year
+ window rather than a 400-year window. For the current data, this
+ affects only the Asia/Tehran file. It does not affect any of the
+ time stamps that this file represents, so zdump outputs the same
+ information as before. (Thanks to Andrew Main (Zefram).)
+
+ The 'date' command has a new '-r' option, which lets you specify
+ the integer time to display, a la FreeBSD.
+
+ The 'tzselect' command has two new options '-c' and '-n', which lets you
+ select a zone based on latitude and longitude.
+
+ The 'zic' command's '-v' option now warns about constructs that
+ require the new version-3 binary file format. (Thanks to Arthur
+ David Olson for the suggestion.)
+
+ Support for floating-point time_t has been removed.
+ It was always dicey, and POSIX no longer requires it.
+ (Thanks to Eric Blake for suggesting to the POSIX committee to
+ remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy
+ Heninger, Arthur David Olson, and Alois Treindl, for reporting
+ bugs and elucidating some of the corners of the old floating-point
+ implementation.)
+
+ The signatures of 'offtime', 'timeoff', and 'gtime' have been
+ changed back to the old practice of using 'long' to represent UT
+ offsets. This had been inadvertently and mistakenly changed to
+ 'int_fast32_t'. (Thanks to Christos Zoulas.)
+
+ The code avoids undefined behavior on integer overflow in some
+ more places, including gmtime, localtime, mktime and zdump.
+
+ Changes affecting the zdump utility
+
+ zdump now outputs "UT" when referring to Universal Time, not "UTC".
+ "UTC" does not make sense for time stamps that predate the introduction
+ of UTC, whereas "UT", a more-generic term, does. (Thanks to Steve Allen
+ for clarifying UT vs UTC.)
+
+ Data changes affecting behavior of tzselect and similar programs
+
+ Country code BQ is now called the more-common name "Caribbean Netherlands"
+ rather than the more-official "Bonaire, St Eustatius & Saba".
+
+ Remove from zone.tab the names America/Montreal, America/Shiprock,
+ and Antarctica/South_Pole, as they are equivalent to existing
+ same-country-code zones for post-1970 time stamps. The data entries for
+ these names are unchanged, so the names continue to work as before.
+
+ Changes affecting code internals
+
+ zic -c now runs way faster on 64-bit hosts when given large numbers.
+
+ zic now uses vfprintf to avoid allocating and freeing some memory.
+
+ tzselect now computes the list of continents from the data,
+ rather than have it hard-coded.
+
+ Minor changes pacify GCC 4.7.3 and GCC 4.8.1.
+
+ Changes affecting the build procedure
+
+ The 'leapseconds' file is now generated automatically from a
+ new file 'leap-seconds.list', which is a copy of
+ <ftp://time.nist.gov/pub/leap-seconds.list>.
+ A new source file 'leapseconds.awk' implements this.
+ The goal is simplification of the future maintenance of 'leapseconds'.
+
+ When building the 'posix' or 'right' subdirectories, if the
+ subdirectory would be a copy of the default subdirectory, it is
+ now made a symbolic link if that is supported. This saves about
+ 2 MB of file system space.
+
+ The links America/Shiprock and Antarctica/South_Pole have been
+ moved to the 'backward' file. This affects only nondefault builds
+ that omit 'backward'.
+
+ Changes affecting version-control only
+
+ .gitignore now ignores 'date'.
+
+ Changes affecting documentation and commentary
+
+ Changes to the 'tzfile' man page
+
+ It now mentions that the binary file format may be extended in
+ future versions by appending data.
+
+ It now refers to the 'zdump' and 'zic' man pages.
+
+ Changes to the 'zic' man page
+
+ It lists conditions that elicit a warning with '-v'.
+
+ It says that the behavior is unspecified when duplicate names
+ are given, or if the source of one link is the target of another.
+
+ Its examples are updated to match the latest data.
+
+ The definition of white space has been clarified slightly.
+ (Thanks to Michael Deckers.)
+
+ Changes to the 'Theory' file
+
+ There is a new section about the accuracy of the tz database,
+ describing the many ways that errors can creep in, and
+ explaining why so many of the pre-1970 time stamps are wrong or
+ misleading (thanks to Steve Allen, Lester Caine, and Garrett
+ Wollman for discussions that contributed to this).
+
+ The 'Theory' file describes LMT better (this follows a
+ suggestion by Guy Harris).
+
+ It refers to the 2013 edition of POSIX rather than the 2004 edition.
+
+ It's mentioned that excluding 'backward' should not affect the
+ other data, and it suggests at least one zone.tab name per
+ inhabited country (thanks to Stephen Colebourne).
+
+ Some longstanding restrictions on names are documented, e.g.,
+ 'America/New_York' precludes 'America/New_York/Bronx'.
+
+ It gives more reasons for the 1970 cutoff.
+
+ It now mentions which time_t variants are supported, such as
+ signed integer time_t. (Thanks to Paul Goyette for reporting
+ typos in an experimental version of this change.)
+
+ (Thanks to Philip Newton for correcting typos in these changes.)
+
+ Documentation and commentary is more careful to distinguish UT in
+ general from UTC in particular. (Thanks to Steve Allen.)
+
+ Add a better source for the Zurich 1894 transition.
+ (Thanks to Pierre-Yves Berger.)
+
+ Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.)
+
+
+Release 2013d - 2013-07-05 07:38:01 -0700
+
+ Changes affecting future time stamps:
+
+ Morocco's midsummer transitions this year are July 7 and August 10,
+ not July 9 and August 8. (Thanks to Andrew Paprocki.)
+
+ Israel now falls back on the last Sunday of October.
+ (Thanks to Ephraim Silverberg.)
+
+ Changes affecting past time stamps:
+
+ Specify Jerusalem's location more precisely; this changes the pre-1880
+ times by 2 s.
+
+ Changing affecting metadata only:
+
+ Fix typos in the entries for country codes BQ and SX.
+
+ Changes affecting code:
+
+ Rework the code to fix a bug with handling Australia/Macquarie on
+ 32-bit hosts (thanks to Arthur David Olson).
+
+ Port to platforms like NetBSD, where time_t can be wider than long.
+
+ Add support for testing time_t types other than the system's.
+ Run 'make check_time_t_alternatives' to try this out.
+ Currently, the tests fail for unsigned time_t;
+ this should get fixed at some point.
+
+ Changes affecting documentation and commentary:
+
+ Deemphasize the significance of national borders.
+
+ Update the zdump man page.
+
+ Remove obsolete NOID comment (thanks to Denis Excoffier).
+
+ Update several URLs and comments in the web pages.
+
+ Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler).
+
+ Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka).
+
+
+Release 2013c - 2013-04-19 16:17:40 -0700
+
+ Changes affecting current and future time stamps:
+
+ Palestine observed DST starting March 29, 2013. (Thanks to
+ Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST,
+ with the predicted rules being the last Thursday in March at 24:00
+ to the first Friday on or after September 21 at 01:00.
+
+ Assume that the recent change to Paraguay's DST rules is permanent,
+ by moving the end of DST to the 4th Sunday in March every year.
+ (Thanks to Carlos Raúl Perasso.)
+
+ Changes affecting past time stamps:
+
+ Fix some historical data for Palestine to agree with that of
+ timeanddate.com, as follows:
+
+ The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not
+ 00:00 Apr 1.
+
+ The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not
+ 02:00.
+
+ The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27.
+
+ The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2.
+
+ The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01.
+
+ The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00.
+
+ Fix times of habitation for Macquarie to agree with the Tasmania
+ Parks & Wildlife Service history, which indicates that permanent
+ habitation was 1899-1919 and 1948 on.
+
+ Changing affecting metadata only:
+
+ Macquarie Island is politically part of Australia, not Antarctica.
+ (Thanks to Tobias Conradi.)
+
+ Sort Macquarie more-consistently with other parts of Australia.
+ (Thanks to Tim Parenti.)
+
+
+Release 2013b - 2013-03-10 22:33:40 -0700
+
+ Changes affecting current and future time stamps:
+
+ Haiti uses US daylight-saving rules this year, and presumably future years.
+ This changes time stamps starting today. (Thanks to Steffen Thorsen.)
+
+ Paraguay will end DST on March 24 this year.
+ (Thanks to Steffen Thorsen.) For now, assume it's just this year.
+
+ Morocco does not observe DST during Ramadan;
+ try to predict Ramadan in Morocco as best we can.
+ (Thanks to Erik Homoet for the heads-up.)
+
+ Changes affecting commentary:
+
+ Update URLs in tz-link page. Add URLs for webOS, BB10, iOS.
+ Update URL for Solaris. Mention Internet RFC 6557.
+ Update Internet RFCs 2445->5545, 2822->5322.
+ Switch from FTP to HTTP for Internet RFCs.
+
+
+Release 2013a - 2013-02-27 09:20:35 -0800
+
+ Change affecting binary data format:
+
+ The zone offset at the end of version-2-format zone files is now
+ allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.)
+
+ Changes affecting current and future time stamps:
+
+ Chile's 2013 rules, and we guess rules for 2014 and later, will be
+ the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC.
+ (Thanks to Steffen Thorsen and Robert Elz.)
+
+ New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen.
+ (Thanks to Tobias Conradi and Arthur David Olson.)
+
+ Many changes affect historical time stamps before 1940.
+ These were deduced from: Milne J. Civil time. Geogr J. 1899
+ Feb;13(2):173-94 <http://www.jstor.org/stable/1774359>.
+
+ Changes affecting the code:
+
+ Fix zic bug that mishandled Egypt's 2010 changes (this also affected
+ the data). (Thanks to Arthur David Olson.)
+
+ Fix localtime bug when time_t is unsigned and data files were generated
+ by a signed time_t system. (Thanks to Doug Bailey for reporting and
+ to Arthur David Olson for fixing.)
+
+ Allow the email address for bug reports to be set by the packager.
+ The default is tz at iana.org, as before. (Thanks to Joseph S. Myers.)
+
+ Update HTML checking to be compatible with Ubuntu 12.10.
+
+ Check that files are a safe subset of ASCII. At some point we may
+ relax this requirement to a safe subset of UTF-8. Without the
+ check, some non-UTF-8 encodings were leaking into the distribution.
+
+ Commentary changes:
+
+ Restore a comment about copyright notices that was inadvertently deleted.
+ (Thanks to Arthur David Olson.)
+
+ Improve the commentary about which districts observe what times
+ in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson).
+
+ Add web page links to tz.js.
+
+ Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.)
+
+
+Release 2012j - 2012-11-12 18:34:49 -0800
+
+ Libya moved to CET this weekend, but with DST planned next year.
+ (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.)
+
+ Signatures now have the extension .asc, not .sign, as that's more
+ standard. (Thanks to Phil Pennock.)
+
+ The output of 'zdump --version', and of 'zic --version', now
+ uses a format that is more typical for --version.
+ (Thanks to Joseph S. Myers.)
+
+ The output of 'tzselect --help', 'zdump --help', and 'zic --help'
+ now uses tz at iana.org rather than the old elsie address.
+
+ zic -v now complains about abbreviations that are less than 3
+ or more than 6 characters, as per Posix. Formerly, it checked
+ for abbreviations that were more than 3.
+
+ 'make public' no longer puts its temporary directory under /tmp,
+ and uses the just-built zic rather than the system zic.
+
+ Various fixes to documentation and commentary.
+
+
+Release 2012i - 2012-11-03 12:57:09 -0700
+
+ Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.)
+
+ Linker flags can now be specified via LDFLAGS.
+ AWK now defaults to 'awk', not 'nawk'.
+ The shell in tzselect now defaults to /bin/bash, but this can
+ be overridden by specifying KSHELL.
+ The main web page now mentions the unofficial GitHub repository.
+ (Thanks to Mike Frysinger.)
+
+ Tarball signatures can now be built by running 'make signatures'.
+ There are also new makefile rules 'tarballs', 'check_public', and
+ separate makefile rules for each tarball and signature file.
+ A few makefile rules are now more portable to strict POSIX.
+
+ The main web page now lists the canonical IANA URL.
+
+
+Release 2012h - 2012-10-26 22:49:10 -0700
+
+ Bahia no longer has DST. (Thanks to Kelley Cook.)
+
+ Tocantins has DST. (Thanks to Rodrigo Severo.)
+
+ Israel has new DST rules next year. (Thanks to Ephraim Silverberg.)
+
+ Jordan stays on DST this winter. (Thanks to Steffen Thorsen.)
+
+ Web page updates.
+
+ More C modernization, except that at Arthur David Olson's suggestion
+ the instances of 'register' were kept.
+
+
+Release 2012g - 2012-10-17 20:59:45 -0700
+
+ Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.)
+
+ Palestine fall 2012. (Thanks to Steffen Thorsen.)
+
+ Assume C89.
+
+ To attack the version-number problem, this release ships the file
+ 'Makefile' (which contains the release number) in both the tzcode and
+ the tzdata tarballs. The two Makefiles are identical, and should be
+ identical in any matching pair of tarballs, so it shouldn't matter
+ which order you extract the tarballs. Perhaps we can come up with a
+ better version-number scheme at some point; this scheme does have the
+ virtue of not adding more files.
+
+
+Release 2012f - 2012-09-12 23:17:03 -0700
+
+ * australasia (Pacific/Fiji): Fiji DST is October 21 through January
+ 20 this year. (Thanks to Steffen Thorsen.)
+
+
+Release 2012e - 2012-08-02 20:44:55 -0700
+
+ * australasia (Pacific/Fakaofo): Tokelau is UTC+13, not UTC+14.
+ (Thanks to Steffen Thorsen.)
+
+ * Use a single version number for both code and data.
+
+ * .gitignore: New file.
+
+ * Remove trailing white space.
+
+
+Release code2012c-data2012d - 2012-07-19 16:35:33 -0700
+
+ Changes for Morocco's time stamps, which take effect in a couple of
+ hours, along with infrastructure changes to accommodate how the tz
+ code and data are released on IANA.
+
+
+Release data2012c - 2012-03-27 12:17:25 -0400
+
+ africa
+ Summer time changes for Morocco (to start late April 2012)
+
+ asia
+ Changes for 2012 for Gaza & the West Bank (Hebron) and Syria
+
+ northamerica
+ Haiti following US/Canada rules for 2012 (and we're assuming,
+ for now anyway, for the future).
+
+
+Release 2012b - 2012-03-02 12:29:15 +0700
+
+ There is just one change to tzcode2012b (compared with 2012a):
+ the Makefile that was accidentally included with 2012a has been
+ replaced with the version that should have been there, which is
+ identical with the previous version (from tzcode2011i).
+
+ There are just two changes in tzdata2012b compared with 2012a.
+
+ Most significantly, summer time in Cuba has been delayed 3 weeks
+ (now starts April 1 rather than March 11). Since Mar 11 (the old start
+ date, as listed in 2012a) is just a little over a week away, this
+ change is urgent.
+
+ Less importantly, an excess tab in one of the changes in zone.tab
+ in 2012a has been removed.
+
+
+Release 2012a - 2012-03-01 18:28:10 +0700
+
+ The changes in tzcode2012a (compared to the previous version, 2011i)
+ are entirely to the README and tz-art.htm and tz-link.htm files, if
+ none of those concern you, you can ignore the code update. The changes
+ reflect the changed addresses for the mailing list and the code and
+ data distribution points & methods (and a link to DateTime::TimeZone::Tzfile
+ has been added to tz-link.htm).
+
+ In tzdata2012a (compared to the previous release, which was 2011n)
+ the major changes are:
+ Chile 2011/2012 and 2012/2013 summer time date adjustments.
+ Falkland Islands onto permanent summer time (we're assuming for the
+ foreseeable future, though 2012 is all we're fairly certain of.)
+ Armenia has abolished Summer Time.
+ Tokelau jumped the International Date Line back last December
+ (just the same as their near neighbour, Samoa).
+ America/Creston is a new zone for a small area of British Columbia
+ There will be a leapsecond 2012-06-30 23:59:60 UTC.
+
+ Other minor changes are:
+ Corrections to 1918 Canadian summer time end dates.
+ Updated URL for UK time zone history (in comments)
+ A few typos in Le Corre's list of free French place names (comments)
+
+
+Release data2011n - 2011-10-30 14:57:54 +0700
+
+ There are three changes of note - most urgently, Cuba (America/Havana)
+ has extended summer time by two weeks, now to end on Nov 13, rather than
+ the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic
+ (Europe/Tiraspol) decided not to split from the rest of Moldova after
+ all, and consequently that zone has been removed (again) and reinstated
+ in the "backward" file as a link to Europe/Chisinau. And third, the
+ end date for Fiji's summer time this summer was moved forward from the
+ earlier planned Feb 26, to Jan 22.
+
+ Apart from that, Moldova (MD) returns to a single entry in zone.tab
+ (and the incorrect syntax that was in the 2011m version of that file
+ is so fixed - it would have been fixed in a different way had this
+ change not happened - that's the "missing" sccs version id).
+
+
+Release data2011m - 2011-10-24 21:42:16 +0700
+
+ In particular, the typos in comments in the data (2011-11-17 should have
+ been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that
+ Tim Parenti noted) have been fixed, and the change for Ukraine has been
+ made in all 4 Ukrainian zones, rather than just Kiev (again, thanks to
+ Tim Parenti, and also Denys Gavrysh)
+
+ In addition, I added Europe/Tiraspol to zone.tab.
+
+ This time, all the files have new version numbers... (including the files
+ otherwise unchanged in 2011m that were changed in 2011l but didn't get new
+ version numbers there...)
+
+
+Release data2011l - 2011-10-10 11:15:43 +0700
+
+ There are just 2 changes that cause different generated tzdata files from
+ zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil
+ is included, but commented out. Compared with the diff I sent out last week,
+ this version also includes attributions for the sources for the changes
+ (in much the same format as ado used, but the html tags have not been
+ checked, verified, or used in any way at all, so if there are errors there,
+ please let me know.)
+
+
+Release data2011k - 2011-09-20 17:54:03 -0400
+
+ [not summarized]
+
+
+Release data2011j - 2011-09-12 09:22:49 -0400
+
+ (contemporary changes for Samoa; past changes for Kenya, Uganda, and
+ Tanzania); there are also two spelling corrections to comments in
+ the australasia file (with thanks to Christos Zoulas).
+
+
+Release 2011i - 2011-08-29 05:56:32 -0400
+
+ [not summarized]
+
+
+Release data2011h - 2011-06-15 18:41:48 -0400
+
+ Russia and Curaçao changes
+
+
+Release 2011g - 2011-04-25 09:07:22 -0400
+
+ update the rules for Egypt to reflect its abandonment of DST this year
+
+
+Release 2011f - 2011-04-06 17:14:53 -0400
+
+ [not summarized]
+
+
+Release 2011e - 2011-03-31 16:04:38 -0400
+
+ Morocco, Chile, and tz-link changes
+
+
+Release 2011d - 2011-03-14 09:18:01 -0400
+
+ changes that impact present-day time stamps in Cuba, Samoa, and Turkey
+
+
+Release 2011c - 2011-03-07 09:30:09 -0500
+
+ These do affect current time stamps in Chile and Annette Island, Canada.
+
+
+Release 2011b - 2011-02-07 08:44:50 -0500
+
+ [not summarized]
+
+
+Release 2011a - 2011-01-24 10:30:16 -0500
+
+ [not summarized]
+
+
+Release data2010o - 2010-11-01 09:18:23 -0400
+
+ change to the end of DST in Fiji in 2011
+
+
+Release 2010n - 2010-10-25 08:19:17 -0400
+
+ [not summarized]
+
+
+Release 2010m - 2010-09-27 09:24:48 -0400
+
+ Hong Kong, Vostok, and zic.c changes
+
+
+Release 2010l - 2010-08-16 06:57:25 -0400
+
+ [not summarized]
+
+
+Release 2010k - 2010-07-26 10:42:27 -0400
+
+ [not summarized]
+
+
+Release 2010j - 2010-05-10 09:07:48 -0400
+
+ changes for Bahía de Banderas and for version naming
+
+
+Release data2010i - 2010-04-16 18:50:45 -0400
+
+ the end of DST in Morocco on 2010-08-08
+
+
+Release data2010h - 2010-04-05 09:58:56 -0400
+
+ [not summarized]
+
+
+Release data2010g - 2010-03-24 11:14:53 -0400
+
+ [not summarized]
+
+
+Release 2010f - 2010-03-22 09:45:46 -0400
+
+ [not summarized]
+
+
+Release data2010e - 2010-03-08 14:24:27 -0500
+
+ corrects the Dhaka bug found by Danvin Ruangchan
+
+
+Release data2010d - 2010-03-06 07:26:01 -0500
+
+ [not summarized]
+
+
+Release 2010c - 2010-03-01 09:20:58 -0500
+
+ changes including KRE's suggestion for earlier initialization of
+ "goahead" and "goback" structure elements
+
+
+Release code2010a - 2010-02-16 10:40:04 -0500
+
+ [not summarized]
+
+
+Release data2010b - 2010-01-20 12:37:01 -0500
+
+ Mexico changes
+
+
+Release data2010a - 2010-01-18 08:30:04 -0500
+
+ changes to Dhaka
+
+
+Release data2009u - 2009-12-26 08:32:28 -0500
+
+ changes to DST in Bangladesh
+
+
+Release 2009t - 2009-12-21 13:24:27 -0500
+
+ [not summarized]
+
+
+Release data2009s - 2009-11-14 10:26:32 -0500
+
+ (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change
+
+
+Release 2009r - 2009-11-09 10:10:31 -0500
+
+ "antarctica" and "tz-link.htm" changes
+
+
+Release 2009q - 2009-11-02 09:12:40 -0500
+
+ with two corrections as reported by Eric Muller and Philip Newton
+
+
+Release data2009p - 2009-10-23 15:05:27 -0400
+
+ Argentina (including San Luis) changes (with the correction from
+ Mariano Absatz)
+
+
+Release data2009o - 2009-10-14 16:49:38 -0400
+
+ Samoa (commentary only), Pakistan, and Bangladesh changes
+
+
+Release data2009n - 2009-09-22 15:13:38 -0400
+
+ added commentary for Argentina and a change to the end of DST in
+ 2009 in Pakistan
+
+
+Release data2009m - 2009-09-03 10:23:43 -0400
+
+ Samoa and Palestine changes
+
+
+Release data2009l - 2009-08-14 09:13:07 -0400
+
+ Samoa (comments only) and Egypt
+
+
+Release 2009k - 2009-07-20 09:46:08 -0400
+
+ [not summarized]
+
+
+Release data2009j - 2009-06-15 06:43:59 -0400
+
+ Bangladesh change (with a short turnaround since the DST change is
+ impending)
+
+
+Release 2009i - 2009-06-08 09:21:22 -0400
+
+ updating for DST in Bangladesh this year
+
+
+Release 2009h - 2009-05-26 09:19:14 -0400
+
+ [not summarized]
+
+
+Release data2009g - 2009-04-20 16:34:07 -0400
+
+ Cairo
+
+
+Release data2009f - 2009-04-10 11:00:52 -0400
+
+ correct DST in Pakistan
+
+
+Release 2009e - 2009-04-06 09:08:11 -0400
+
+ [not summarized]
+
+
+Release 2009d - 2009-03-23 09:38:12 -0400
+
+ Morocco, Tunisia, Argentina, and American Astronomical Society changes
+
+
+Release data2009c - 2009-03-16 09:47:51 -0400
+
+ change to the start of Cuban DST
+
+
+Release 2009b - 2009-02-09 11:15:22 -0500
+
+ [not summarized]
+
+
+Release 2009a - 2009-01-21 10:09:39 -0500
+
+ [not summarized]
+
+
+Release data2008i - 2008-10-21 12:10:25 -0400
+
+ southamerica and zone.tab files, with Argentina DST rule changes and
+ United States zone reordering and recommenting
+
+
+Release 2008h - 2008-10-13 07:33:56 -0400
+
+ [not summarized]
+
+
+Release 2008g - 2008-10-06 09:03:18 -0400
+
+ Fix a broken HTML anchor and update Brazil's DST transitions;
+ there's also a slight reordering of information in tz-art.htm.
+
+
+Release data2008f - 2008-09-09 22:33:26 -0400
+
+ [not summarized]
+
+
+Release 2008e - 2008-07-28 14:11:17 -0400
+
+ changes by Arthur David Olson and Jesper Nørgaard Welen
+
+
+Release data2008d - 2008-07-07 09:51:38 -0400
+
+ changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo
+
+
+Release data2008c - 2008-05-19 17:48:03 -0400
+
+ Pakistan, Morocco, and Mongolia
+
+
+Release data2008b - 2008-03-24 08:30:59 -0400
+
+ including renaming Asia/Calcutta to Asia/Kolkata, with a backward
+ link provided
+
+
+Release 2008a - 2008-03-08 05:42:16 -0500
+
+ [not summarized]
+
+
+Release 2007k - 2007-12-31 10:25:22 -0500
+
+ most importantly, changes to the "southamerica" file based on
+ Argentina's readoption of daylight saving time
+
+
+Release 2007j - 2007-12-03 09:51:01 -0500
+
+ 1. eliminate the "P" (parameter) macro;
+
+ 2. the "noncontroversial" changes circulated on the time zone
+ mailing list (less the changes to "logwtmp.c");
+
+ 3. eliminate "too many transition" errors when "min" is used in time
+ zone rules;
+
+ 4. changes by Paul Eggert (including updated information for Venezuela).
+
+
+Release data2007i - 2007-10-30 10:28:11 -0400
+
+ changes for Cuba and Syria
+
+
+Release 2007h - 2007-10-01 10:05:51 -0400
+
+ changes by Paul Eggert, as well as an updated link to the ICU
+ project in tz-link.htm
+
+
+Release 2007g - 2007-08-20 10:47:59 -0400
+
+ changes by Paul Eggert
+
+ The "leapseconds" file has been updated to incorporate the most
+ recent International Earth Rotation and Reference Systems Service
+ (IERS) bulletin.
+
+ There's an addition to tz-art.htm regarding the television show "Medium".
+
+
+Release 2007f - 2007-05-07 10:46:46 -0400
+
+ changes by Paul Eggert (including Haiti, Turks and Caicos, and New
+ Zealand)
+
+ changes to zic.c to allow hour values greater than 24 (along with
+ Paul's improved time value overflow checking)
+
+
+Release 2007e - 2007-04-02 10:11:52 -0400
+
+ Syria and Honduras changes by Paul Eggert
+
+ zic.c variable renaming changes by Arthur David Olson
+
+
+Release 2007d - 2007-03-20 08:48:30 -0400
+
+ changes by Paul Eggert
+
+ the elimination of white space at the ends of lines
+
+
+Release 2007c - 2007-02-26 09:09:37 -0500
+
+ changes by Paul Eggert
+
+
+Release 2007b - 2007-02-12 09:34:20 -0500
+
+ Paul Eggert's proposed change to the quotation handling logic in zic.c.
+
+ changes to the commentary in "leapseconds" reflecting the IERS
+ announcement that there is to be no positive leap second at the end
+ of June 2007.
+
+
+Release 2007a - 2007-01-08 12:28:29 -0500
+
+ changes by Paul Eggert
+
+ Derick Rethan's Asmara change
+
+ Oscar van Vlijmen's Easter Island local mean time change
+
+ symbolic link changes
+
+
+Release 2006p - 2006-11-27 08:54:27 -0500
+
+ changes by Paul Eggert
+
+
+Release 2006o - 2006-11-06 09:18:07 -0500
+
+ changes by Paul Eggert
+
+
+Release 2006n - 2006-10-10 11:32:06 -0400
+
+ changes by Paul Eggert
+
+
+Release 2006m - 2006-10-02 15:32:35 -0400
+
+ changes for Uruguay, Palestine, and Egypt by Paul Eggert
+
+ (minimalist) changes to zic.8 to clarify "until" information
+
+
+Release data2006l - 2006-09-18 12:58:11 -0400
+
+ Paul's best-effort work on this coming weekend's Egypt time change
+
+
+Release 2006k - 2006-08-28 12:19:09 -0400
+
+ changes by Paul Eggert
+
+
+Release 2006j - 2006-08-21 09:56:32 -0400
+
+ changes by Paul Eggert
+
+
+Release code2006i - 2006-08-07 12:30:55 -0400
+
+ localtime.c fixes
+
+ Ken Pizzini's conversion script
+
+
+Release code2006h - 2006-07-24 09:19:37 -0400
+
+ adds public domain notices to four files
+
+ includes a fix for transition times being off by a second
+
+ adds a new recording to the "arts" file (information courtesy Colin Bowern)
+
+
+Release 2006g - 2006-05-08 17:18:09 -0400
+
+ northamerica changes by Paul Eggert
+
+
+Release 2006f - 2006-05-01 11:46:00 -0400
+
+ a missing version number problem is fixed (with thanks to Bradley
+ White for catching the problem)
+
+
+Release 2006d - 2006-04-17 14:33:43 -0400
+
+ changes by Paul Eggert
+
+ added new items to tz-arts.htm that were found by Paul
+
+
+Release 2006c - 2006-04-03 10:09:32 -0400
+
+ two sets of data changes by Paul Eggert
+
+ a fencepost error fix in zic.c
+
+ changes to zic.c and the "europe" file to minimize differences
+ between output produced by the old 32-bit zic and the new 64-bit
+ version
+
+
+Release 2006b - 2006-02-20 10:08:18 -0500
+ [tz32code2006b + tz64code2006b + tzdata2006b]
+
+ 64-bit code
+
+ All SCCS IDs were bumped to "8.1" for this release.
+
+
+Release 2006a - 2006-01-30 08:59:31 -0500
+
+ changes by Paul Eggert (in particular, Indiana time zone moves)
+
+ an addition to the zic manual page to describe how special-case
+ transitions are handled
+
+
+Release 2005r - 2005-12-27 09:27:13 -0500
+
+ Canadian changes by Paul Eggert
+
+ They also add "<pre>" directives to time zone data files and reflect
+ changes to warning message logic in "zdump.c" (but with calls to
+ "gettext" kept unbundled at the suggestion of Ken Pizzini).
+
+
+Release 2005q - 2005-12-13 09:17:09 -0500
+
+ Nothing earth-shaking here:
+ 1. Electronic mail addresses have been removed.
+ 2. Casts of the return value of exit have been removed.
+ 3. Casts of the argument of is.* macros have been added.
+ 4. Indentation in one section of zic.c has been fixed.
+ 5. References to dead URLs in the data files have been dealt with.
+
+
+Release 2005p - 2005-12-05 10:30:53 -0500
+
+ "systemv", "tz-link.htm", and "zdump.c" changes
+ (less the casts of arguments to the is* macros)
+
+
+Release 2005o - 2005-11-28 10:55:26 -0500
+
+ Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert
+
+ zdump.c lint fixes by Arthur David Olson
+
+
+Release 2005n - 2005-10-03 09:44:09 -0400
+
+ changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan
+ et al. changes)
+
+
+Release 2005m - 2005-08-29 12:15:40 -0400
+
+ changes by Paul Eggert (with a small tweak to the tz-art change)
+
+ a declaration of an unused variable has been removed from zdump.c
+
+
+Release 2005l - 2005-08-22 12:06:39 -0400
+
+ changes by Paul Eggert
+
+ overflow/underflow checks by Arthur David Olson, minus changes to
+ the "Theory" file about the pending addition of 64-bit data (I grow
+ less confident of the changes being accepted with each passing day,
+ and the changes no longer increase the data files nine-fold--there's
+ less than a doubling in size by my local Sun's reckoning)
+
+
+Release 2005k - 2005-07-14 14:14:24 -0400
+
+ The "leapseconds" file has been edited to reflect the recently
+ announced leap second at the end of 2005.
+
+ I've also deleted electronic mail addresses from the files as an
+ anti-spam measure.
+
+
+Release 2005j - 2005-06-13 14:34:13 -0400
+
+ These reflect changes to limit the length of time zone abbreviations
+ and the characters used in those abbreviations.
+
+ There are also changes to handle POSIX-style "quoted" time zone
+ environment variables.
+
+ The changes were circulated on the time zone mailing list; the only
+ change since then was the removal of a couple of minimum-length of
+ abbreviation checks.
+
+
+Release data2005i - 2005-04-21 15:04:16 -0400
+
+ changes (most importantly to Nicaragua and Haiti) by Paul Eggert
+
+
+Release 2005h - 2005-04-04 11:24:47 -0400
+
+ changes by Paul Eggert
+
+ minor changes to Makefile and zdump.c to produce more useful output
+ when doing a "make typecheck"
+
+
+Release 2005g - 2005-03-14 10:11:21 -0500
+
+ changes by Paul Eggert (a change to current DST rules in Uruguay and
+ an update to a link to time zone software)
+
+
+Release 2005f - 2005-03-01 08:45:32 -0500
+
+ data and documentation changes by Paul Eggert
+
+
+Release 2005e - 2005-02-10 15:59:44 -0500
+
+ [not summarized]
+
+
+Release code2005d - 2005-01-31 09:21:47 -0500
+
+ make zic complain about links to links if the -v flag is used
+
+ have "make public" do more code checking
+
+ add an include to "localtime.c" for the benefit of gcc systems
+
+
+Release 2005c - 2005-01-17 18:36:29 -0500
+
+ get better results when mktime runs on a system where time_t is double
+
+ changes to the data files (most importantly to Paraguay)
+
+
+Release 2005b - 2005-01-10 09:19:54 -0500
+
+ Get localtime and gmtime working on systems with exotic time_t types.
+
+ Update the leap second commentary in the "leapseconds" file.
+
+
+Release 2005a - 2005-01-01 13:13:44 -0500
+
+ [not summarized]
+
+
+Release code2004i - 2004-12-14 13:42:58 -0500
+
+ Deal with systems where time_t is unsigned.
+
+
+Release code2004h - 2004-12-07 11:40:18 -0500
+
+ 64-bit-time_t changes
+
+
+Release 2004g - 2004-11-02 09:06:01 -0500
+
+ update to Cuba (taking effect this weekend)
+
+ other changes by Paul Eggert
+
+ correction of the spelling of Oslo
+
+ changed versions of difftime.c and private.h
+
+
+Release code2004f - 2004-10-21 10:25:22 -0400
+
+ Cope with wide-ranging tm_year values.
+
+
+Release 2004e - 2004-10-11 14:47:21 -0400
+
+ Brazil/Argentina/Israel changes by Paul Eggert
+
+ changes to tz-link.htm by Paul
+
+ one small fix to Makefile
+
+
+Release 2004d - 2004-09-22 08:27:29 -0400
+
+ Avoid overflow problems when TM_YEAR_BASE is added to an integer.
+
+
+Release 2004c - 2004-08-11 12:06:26 -0400
+
+ asctime-related changes
+
+ (variants of) some of the documentation changes suggested by Paul Eggert
+
+
+Release 2004b - 2004-07-19 14:33:35 -0400
+
+ data changes by Paul Eggert - most importantly, updates for Argentina
+
+
+Release 2004a - 2004-05-27 12:00:47 -0400
+
+ changes by Paul Eggert
+
+ Handle DST transitions that occur at the end of a month in some
+ years but at the start of the following month in other years.
+
+ Add a copy of the correspondence that's the basis for claims about
+ DST in the Navajo Nation.
+
+
+Release 2003e - 2003-12-15 09:36:47 -0500
+
+ changes by Arthur David Olson (primarily code changes)
+
+ changes by Paul Eggert (primarily data changes)
+
+ minor changes to "Makefile" and "northamerica" (in the latter case,
+ optimization of the "Toronto" rules)
+
+
+Release 2003d - 2003-10-06 09:34:44 -0400
+
+ changes by Paul Eggert
+
+
+Release 2003c - 2003-09-16 10:47:05 -0400
+
+ Fix bad returns in zic.c's inleap function.
+ Thanks to Bradley White for catching the problem!
+
+
+Release 2003b - 2003-09-16 07:13:44 -0400
+
+ Add a "--version" option (and documentation) to the zic and zdump commands.
+
+ changes to overflow/underflow checking in zic
+
+ a localtime typo fix.
+
+ Update the leapseconds and tz-art.htm files.
+
+
+Release 2003a - 2003-03-24 09:30:54 -0500
+
+ changes by Paul Eggert
+
+ a few additions and modifications to the tz-art.htm file
+
+
+Release 2002d - 2002-10-15 13:12:42 -0400
+
+ changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab
+
+ There's also a new time zone quote in "tz-art.htm".
+
+
+Release 2002c - 2002-04-04 11:55:20 -0500
+
+ changes by Paul Eggert
+
+ Change zic.c to avoid creating symlinks to files that don't exist.
+
+
+Release 2002b - 2002-01-28 12:56:03 -0500
+
+ [These change notes are for Release 2002a, which was corrupted.
+ 2002b was a corrected version of 2002a.]
+
+ changes by Paul Eggert
+
+ Update the "leapseconds" file to note that there'll be no leap
+ second at the end of June, 2002.
+
+ Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone.
+
+ Change to "difftime.c" to avoid sizeof problems.
+
+
+Release 2001d - 2001-10-09 13:31:32 -0400
+
+ changes by Paul Eggert
+
+
+Release 2001c - 2001-06-05 13:59:55 -0400
+
+ changes by Paul Eggert and Andrew Brown
+
+
+Release 2001b - 2001-04-05 16:44:38 -0400
+
+ changes by Paul Eggert (modulo jnorgard's typo fix)
+
+ tz-art.htm has been HTMLified.
+
+
+Release 2001a - 2001-03-13 12:57:44 -0500
+
+ changes by Paul Eggert
+
+ An addition to the "leapseconds" file: comments with the text of the
+ latest IERS leap second notice.
+
+ Trailing white space has been removed from data file lines, and
+ repeated spaces in "Rule Jordan" lines in the "asia" file have been
+ converted to tabs.
+
+
+Release 2000h - 2000-12-14 15:33:38 -0500
+
+ changes by Paul Eggert
+
+ one typo fix in the "art" file
+
+ With providence, this is the last update of the millennium.
+
+
+Release 2000g - 2000-10-10 11:35:22 -0400
+
+ changes by Paul Eggert
+
+ correction of John Mackin's name submitted by Robert Elz
+
+ Garry Shandling's Daylight Saving Time joke (!?!) from the recent
+ Emmy Awards broadcast.
+
+
+Release 2000f - 2000-08-10 09:31:58 -0400
+
+ changes by Paul Eggert
+
+ Added information in "tz-art.htm" on a Seinfeld reference to DST.
+
+ Error checking and messages in the "yearistype" script have been
+ improved.
+
+
+Release 2000e - 2000-07-31 09:27:54 -0400
+
+ data changes by Paul Eggert
+
+ a change to the default value of the defined constant HAVE_STRERROR
+
+ the addition of a Dave Barry quote on DST to the tz-arts file
+
+
+Release 2000d - 2000-04-20 15:43:04 -0400
+
+ changes to the documentation and code of strftime for C99 conformance
+
+ a bug fix for date.c
+
+ These are based on (though modified from) changes by Paul Eggert.
+
+
+Release 2000c - 2000-03-04 10:31:43 -0500
+
+ changes by Paul Eggert
+
+
+Release 2000b - 2000-02-21 12:16:29 -0500
+
+ changes by Paul Eggert and Joseph Myers
+
+ modest tweaks to the tz-art.htm and tz-link.htm files
+
+
+Release 2000a - 2000-01-18 09:21:26 -0500
+
+ changes by Paul Eggert
+
+ The two hypertext documents have also been renamed.
+
+
+Release code1999i-data1999j - 1999-11-15 18:43:22 -0500
+
+ Paul Eggert's changes
+
+ additions to the "zic" manual page and the "Arts.htm" file
+
+
+Release code1999h-data1999i - 1999-11-08 14:55:21 -0500
+
+ [not summarized]
+
+
+Release data1999h - 1999-10-07 03:50:29 -0400
+
+ changes by Paul Eggert to "europe" (most importantly, fixing
+ Lithuania and Estonia)
+
+
+Release 1999g - 1999-09-28 11:06:18 -0400
+
+ data changes by Paul Eggert (most importantly, the change for
+ Lebanon that buys correctness for this coming Sunday)
+
+ The "code" file contains changes to "Makefile" and "checktab.awk" to
+ allow better checking of time zone files before they are published.
+
+
+Release 1999f - 1999-09-23 09:48:14 -0400
+
+ changes by Arthur David Olson and Paul Eggert
+
+
+Release 1999e - 1999-08-17 15:20:54 -0400
+
+ changes circulated by Paul Eggert, although the change to handling
+ of DST-specifying time zone names has been commented out for now
+ (search for "XXX" in "localtime.c" for details). These files also
+ do not make any changes to the start of DST in Brazil.
+
+ In addition to Paul's changes, there are updates to "Arts.htm" and
+ cleanups of URLs.
+
+
+Release 1999d - 1999-03-30 11:31:07 -0500
+
+ changes by Paul Eggert
+
+ The Makefile's "make public" rule has also been changed to do a test
+ compile of each individual time zone data file (which should help
+ avoid problems such as the one we had with Nicosia).
+
+
+Release 1999c - 1999-03-25 09:47:47 -0500
+
+ changes by Paul Eggert, most importantly the change for Chile.
+
+
+Release 1999b - 1999-02-01 17:51:44 -0500
+
+ changes by Paul Eggert
+
+ code changes (suggested by Mani Varadarajan, mani at be.com) for
+ correct handling of symbolic links when building using a relative directory
+
+ code changes to generate correct messages for failed links
+
+ updates to the URLs in Arts.htm
+
+
+Release 1999a - 1999-01-19 16:20:29 -0500
+
+ error message internationalizations and corrections in zic.c and
+ zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz,
+ to whom thanks!)
+
+
+Release code1998h-data1998i - 1998-10-01 09:56:10 -0400
+
+ changes for Brazil, Chile, and Germany
+
+ support for use of "24:00" in the input files for the time zone compiler
+
+
+Release code1998g-data1998h - 1998-09-24 10:50:28 -0400
+
+ changes by Paul Eggert
+
+ correction to a define in the "private.h" file
+
+
+Release data1998g - 1998-08-11 03:28:35 -0000
+ [tzdata1998g.tar.gz is missing!]
+
+ Lithuanian change provided by mgedmin at pub.osf.it
+
+ Move creation of the GMT link with Etc/GMT to "etcetera" (from
+ "backward") to ensure that the GMT file is created even where folks
+ don't want the "backward" links (as suggested by Paul Eggert).
+
+
+Release data1998f - 1998-07-20 13:50:00 -0000
+ [tzdata1998f.tar.gz is missing!]
+
+ Update the "leapseconds" file to include the newly-announced
+ insertion at the end of 1998.
+
+
+Release code1998f - 1998-06-01 10:18:31 -0400
+
+ addition to localtime.c by Guy Harris
+
+
+Release 1998e - 1998-05-28 09:56:26 -0400
+
+ The Makefile is changed to produce zoneinfo-posix rather than
+ zoneinfo/posix, and to produce zoneinfo-leaps rather than
+ zoneinfo/right.
+
+ data changes by Paul Eggert
+
+ changes from Guy Harris to provide asctime_r and ctime_r
+
+ A usno1998 file (substantially identical to usno1997) has been added.
+
+
+Release 1998d - 1998-05-14 11:58:34 -0400
+
+ changes to comments (in particular, elimination of references to CIA maps).
+ "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places
+ where changes occur.
+
+
+Release 1998c - 1998-02-28 12:32:26 -0500
+
+ changes by Paul Eggert (save the "French correction," on which I'll
+ wait for the dust to settle)
+
+ symlink changes
+
+ changes and additions to Arts.htm
+
+
+Release 1998b - 1998-01-17 14:31:51 -0500
+
+ URL cleanups and additions
+
+
+Release 1998a - 1998-01-13 12:37:35 -0500
+
+ changes by Paul Eggert
+
+
+Release code1997i-data1997k - 1997-12-29 09:53:41 -0500
+
+ changes by Paul Eggert, with minor modifications from Arthur David
+ Olson to make the files more browser friendly
+
+
+Release code1997h-data1997j - 1997-12-18 17:47:35 -0500
+
+ minor changes to put "TZif" at the start of each time zone information file
+
+ a rule has also been added to the Makefile so you can
+ make zones
+ to just recompile the zone information files (rather than doing a
+ full "make install" with its other effects).
+
+
+Release data1997i - 1997-10-07 08:45:38 -0400
+
+ changes to Africa by Paul Eggert
+
+
+Release code1997g-data1997h - 1997-09-04 16:56:54 -0400
+
+ corrections for Uruguay (and other locations)
+
+ Arthur David Olson's simple-minded fix allowing mktime to both
+ correctly handle leap seconds and correctly handle tm_sec values
+ upon which arithmetic has been performed.
+
+
+Release code1997f-data1997g - 1997-07-19 13:15:02 -0400
+
+ Paul Eggert's updates
+
+ a small change to a function prototype;
+
+ "Music" has been renamed "Arts.htm", HTMLified, and augmented to
+ include information on Around the World in Eighty Days.
+
+
+Release code1997e-data1997f - 1997-05-03 18:52:34 -0400
+
+ fixes to zic's error handling
+
+ changes inspired by the item circulated on Slovenia
+
+ The description of Web resources has been HTMLified for browsing
+ convenience.
+
+ A new piece of tz-related music has been added to the "Music" file.
+
+
+Release code1997d-data1997e - 1997-03-29 12:48:52 -0500
+
+ Paul Eggert's latest suggestions
+
+
+Release code1997c-data1997d - 1997-03-07 20:37:54 -0500
+
+ changes to "zic.c" to correct performance of the "-s" option
+
+ a new file "usno1997"
+
+
+Release data1997c - 1997-03-04 09:58:18 -0500
+
+ changes in Israel
+
+
+Release 1997b - 1997-02-27 18:34:19 -0500
+
+ The data file incorporates the 1997 leap second.
+
+ The code file incorporates Arthur David Olson's take on the
+ zic/multiprocessor/directory-creation situation.
+
+
+Release 1997a - 1997-01-21 09:11:10 -0500
+
+ Paul Eggert's Antarctica (and other changes)
+
+ Arthur David Olson finessed the "getopt" issue by checking against
+ both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1
+ is returned while SunOS 5.5's manual says EOF is returned).
+
+
+Release code1996o-data1996n - 1996-12-27 21:42:05 -0500
+
+ Paul Eggert's latest changes
+
+
+Release code1996n - 1996-12-16 09:42:02 -0500
+
+ link snapping fix from Bruce Evans (via Garrett Wollman)
+
+
+Release data1996m - 1996-11-24 02:37:34 -0000
+ [tzdata1996m.tar.gz is missing!]
+
+ Paul Eggert's batch of changes
+
+
+Release code1996m-data1996l - 1996-11-05 14:00:12 -0500
+
+ No functional changes here; the files have simply been changed to
+ make more use of ISO style dates in comments. The names of the above
+ files now include the year in full.
+
+
+Release code96l - 1996-09-08 17:12:20 -0400
+
+ tzcode96k was missing a couple of pieces.
+
+
+Release 96k - 1996-09-08 16:06:22 -0400
+
+ the latest round of changes from Paul Eggert
+
+ the recent Year 2000 material
+
+
+Release code96j - 1996-07-30 13:18:53 -0400
+
+ Set sp->typecnt as suggested by Timothy Patrick Murphy.
+
+
+Release code96i - 1996-07-27 20:11:35 -0400
+
+ Paul's suggested patch for strftime %V week numbers
+
+
+Release data96i - 1996-07-01 18:13:04 -0400
+
+ "northamerica" and "europe" changes by Paul Eggert
+
+
+Release code96h - 1996-06-05 08:02:21 -0400
+
+ fix for handling transitions specified in Universal Time
+
+ Some "public domain" notices have also been added.
+
+
+Release code96g - 1996-05-16 14:00:26 -0400
+
+ fix for the simultaneous-DST-and-zone-change challenge
+
+
+Release data96h - 1996-05-09 17:40:51 -0400
+
+ changes by Paul Eggert
+
+
+Release code96f-data96g - 1996-05-03 03:09:59 -0000
+ [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!]
+
+ The changes get us some of the way to fixing the problems noted in Paul
+ Eggert's letter yesterday (in addition to a few others). The approach
+ has been to make zic a bit smarter about figuring out what time zone
+ abbreviations apply just after the time specified in the "UNTIL" part
+ of a zone line. Putting the smarts in zic means avoiding having
+ transition times show up in both "Zone" lines and "Rule" lines, which
+ in turn avoids multiple transition time entries in time zone files.
+ (This also makes the zic input files such as "europe" a bit shorter and
+ should ease maintenance.)
+
+
+Release data96f - 1996-04-19 19:20:03 -0000
+ [tzdata96f.tar.gz is missing!]
+
+ The only changes are to the "northamerica" file; the time zone
+ abbreviation for Denver is corrected to MST (and MDT), and the
+ comments for Mexico have been updated.
+
+
+Release data96e - 1996-03-19 17:37:26 -0500
+
+ Proposals by Paul Eggert, in particular the Portugal change that
+ comes into play at the end of this month.
+
+
+Release data96d - 1996-03-18 20:49:39 -0500
+
+ [not summarized]
+
+
+Release code96e - 1996-02-29 15:43:27 -0000
+ [tzcode96e.tar.gz is missing!]
+
+ internationalization changes and the fix to the documentation for strftime
+
+
+Release code96d-data96c - 1996-02-12 11:05:27 -0500
+
+ The "code" file simply updates Bob Kridle's electronic address.
+
+ The "data" file updates rules for Mexico.
+
+
+Release data96b - 1996-01-27 15:44:42 -0500
+
+ Kiribati change
+
+
+Release code96c - 1996-01-16 16:58:15 -0500
+
+ leap-year streamlining and binary-search changes
+
+ fix to newctime.3
+
+
+Release code96b - 1996-01-10 20:42:39 -0500
+
+ fixes and enhancements from Paul Eggert, including code that
+ emulates the behavior of recent versions of the SunOS "date"
+ command.
+
+
+Release 96a - 1996-01-06 09:08:24 -0500
+
+ Israel updates
+
+ fixes to strftime.c for correct ISO 8601 week number generation,
+ plus support for two new formats ('G' and 'g') to give ISO 8601 year
+ numbers (which are not necessarily the same as calendar year numbers)
+
+
+Release code95i-data95m - 1995-12-21 12:46:47 -0500
+
+ The latest revisions from Paul Eggert are included, the usno1995
+ file has been updated, and a new file ("WWW") covering useful URLs
+ has been added.
+
+
+Release code95h-data95l - 1995-12-19 18:10:12 -0500
+
+ A simplification of a macro definition, a change to data for Sudan,
+ and (for last minute shoppers) notes in the "Music" file on the CD
+ "Old Man Time".
+
+
+Release code95g-data95k - 1995-10-30 10:32:47 -0500
+
+ (slightly reformatted) 8-bit-clean proposed patch
+
+ minor patch: US/Eastern -> America/New_York
+
+ snapshot of the USNO's latest data ("usno1995")
+
+ some other minor cleanups
+
+
+Release code95f-data95j - 1995-10-28 21:01:34 -0000
+ [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!]
+
+ European cleanups
+
+ support for 64-bit time_t's
+
+ optimization in localtime.c
+
+
+Release code95e - 1995-10-13 13:23:57 -0400
+
+ the mktime change to scan from future to past when trying to find time zone
+ offsets
+
+
+Release data95i - 1995-09-26 10:43:26 -0400
+
+ For Canada/Central, guess that the Sun customer's "one week too
+ early" was just a approximation, and the true error is one month
+ too early. This is consistent with the rest of Canada.
+
+
+Release data95h - 1995-09-21 11:26:48 -0400
+
+ latest changes from Paul Eggert
+
+
+Release code95d - 1995-09-14 11:14:45 -0400
+
+ the addition of a "Music" file, which documents four recorded
+ versions of the tune "Save That Time".
+
+
+Release data95g - 1995-09-01 17:21:36 -0400
+
+ "yearistype" correction
+
+
+Release data95f - 1995-08-28 20:46:56 -0400
+
+ Paul Eggert's change to the australasia file
+
+
+Release data95e - 1995-07-08 18:02:34 -0400
+
+ The only change is a leap second at the end of this year.
+ Thanks to Bradley White for forwarding news on the leap second.
+
+
+Release data95d - 1995-07-03 13:26:22 -0400
+
+ Paul Eggert's changes
+
+
+Release data95c - 1995-07-02 19:19:28 -0400
+
+ changes to "asia", "backward", "europe", and "southamerica"
+ (read: northamericacentrics need not apply)
+
+
+Release code95c - 1995-03-13 14:00:46 -0500
+
+ one-line fix for sign extension problems in detzcode
+
+
+Release 95b - 1995-03-04 11:22:38 -0500
+
+ Minor changes in both:
+
+ The "code" file contains a workaround for the lack of "unistd.h" in
+ Microsoft C++ version 7.
+
+ The "data" file contains a fixed "Link" for America/Shiprock.
+
+
+Release 94h - 1994-12-10 12:51:14 -0500
+
+ The files:
+
+ * incorporate the changes to "zdump" and "date" to make changes to
+ the "TZ" environment variable permanent;
+
+ * incorporate the table changes by Paul Eggert;
+
+ * include (and document) support for universal time specifications in
+ data files - but do not (yet) include use of this feature in the
+ data files.
+
+ Think of this as "TZ Classic" - the software has been set up not to break if
+ universal time shows up in its input, and data entries have been
+ left as is so as not to break existing implementations.
+
+
+Release data94f - 1994-08-20 12:56:09 -0400
+
+ (with thanks!) the latest data updates from Paul Eggert
+
+
+Release data94e - 1994-06-04 13:13:53 -0400
+
+ [not summarized]
+
+
+Release code94g - 1994-05-05 12:14:07 -0400
+
+ fix missing "optind.c" and a reference to it in the Makefile
+
+
+Release code94f - 1994-05-05 13:00:33 -0000
+ [tzcode94f.tar.gz is missing!]
+
+ changes to avoid overflow in difftime, as well as changes to cope
+ with the 52/53 challenge in strftime
+
+
+Release code94e - 1994-03-30 23:32:59 -0500
+
+ change for the benefit of PCTS
+
+
+Release 94d - 1994-02-24 15:42:25 -0500
+
+ Avoid clashes with POSIX semantics for zones such as GMT+4.
+
+ Some other very minor housekeeping is also present.
+
+
+Release code94c - 1994-02-10 08:52:40 -0500
+
+ Fix bug where mkdirs was broken unless you compile with
+ -fwritable-strings (which is generally losing to do).
+
+
+Release 94b - 1994-02-07 10:04:33 -0500
+
+ work by Paul Eggert who notes:
+
+ I found another book of time zone histories by E W Whitman; it's not
+ as extensive as Shanks but has a few goodies of its own. I used it
+ to update the tables. I also fixed some more as a result of
+ correspondence with Adam David and Peter Ilieve, and move some stray
+ links from 'europe' to 'backward'. I corrected some scanning errors
+ in usno1989.
+
+ As far as the code goes, I fixed zic to allow years in the range
+ INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900.
+ And I cleaned up the zic documentation a little bit.
+
+
+Release data94a - 1994-02-03 08:58:54 -0500
+
+ It simply incorporates the recently announced leap second into the
+ "leapseconds" file.
+
+
+Release 93g - 1993-11-22 17:28:27 -0500
+
+ Paul Eggert has provided a good deal of historic information (based
+ on Shanks), and there are some code changes to deal with the buglets
+ that crawled out in dealing with the new information.
+
+
+Release 93f - 1993-10-15 12:27:46 -0400
+
+ Paul Eggert's changes
+
+
+Release 93e - 1993-09-05 21:21:44 -0400
+
+ This has updated data for Israel, England, and Kwajalein. There's
+ also an update to "zdump" to cope with Kwajalein's 24-hour jump.
+ Thanks to Paul Eggert and Peter Ilieve for the changes.
+
+
+Release 93d - 1993-06-17 23:34:17 -0400
+
+ new fix and new data on Israel
+
+
+Release 93c - 1993-06-06 19:31:55 -0400
+
+ [not summarized]
+
+
+Release 93b - 1993-02-02 14:53:58 -0500
+
+ updated "leapseconds" file
+
+
+Release 93 - 1993-01-08 07:01:06 -0500
+
+ At kre's suggestion, the package has been split in two - a code piece
+ (which also includes documentation) that's only of use to folks who
+ want to recompile things and a data piece useful to anyone who can
+ run "zic".
+
+ The new version has a few changes to the data files, a few
+ portability changes, and an off-by-one fix (with thanks to
+ Tom Karzes at deshaw.com for providing a description and a
+ solution).
+
+
+Release 92c - 1992-11-21 17:35:36 -0000
+ [tz92c.tar.Z is missing!]
+
+ The fallout from the latest round of DST transitions.
+
+ There are changes for Portugal, Saskatchewan, and "Pacific-New";
+ there's also a change to "zic.c" that makes it portable to more systems.
+
+
+Release 92 - 1992-04-25 18:17:03 -0000
+ [tz92.tar.Z is missing!]
+
+ By popular demand (well, at any rate, following a request by kre at munnari)
+
+
+The 1989 update of the time zone package featured:
+
+ * POSIXization (including interpretation of POSIX-style TZ environment
+ variables, provided by Guy Harris),
+ * ANSIfication (including versions of "mktime" and "difftime"),
+ * SVIDulation (an "altzone" variable)
+ * MACHination (the "gtime" function)
+ * corrections to some time zone data (including corrections to the rules
+ for Great Britain and New Zealand)
+ * reference data from the United States Naval Observatory for folks who
+ want to do additional time zones
+ * and the 1989 data for Saudi Arabia.
+
+ (Since this code will be treated as "part of the implementation" in some
+ places and as "part of the application" in others, there's no good way to
+ name functions, such as timegm, that are not part of the proposed ANSI C
+ standard; such functions have kept their old, underscore-free names in this
+ update.)
+
+ And the "dysize" function has disappeared; it was present to allow
+ compilation of the "date" command on old BSD systems, and a version of "date"
+ is now provided in the package. The "date" command is not created when you
+ "make all" since it may lack options provided by the version distributed with
+ your operating system, or may not interact with the system in the same way
+ the native version does.
+
+ Since POSIX frowns on correct leap second handling, the default behavior of
+ the "zic" command (in the absence of a "-L" option) has been changed to omit
+ leap second information from its output files.
+
+
+-----
+Notes
+
+This file contains copies of the part of each release announcement
+that talks about the changes in that release. The text has been
+adapted and reformatted for the purposes of this file.
+
+Typically a release R consists of a pair of tarball files,
+tzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g.,
+code2010a, data2012c) consist of just one or the other tarball, and a
+few (e.g., code2012c-data2012d) have tarballs with mixed version
+numbers.
+
+Release time stamps are taken from the release's commit (for newer,
+git releases), from the newest file in the tarball (for older
+releases, where this info is available) or from the email announcing
+the release (if all else fails; these are marked with a time zone of
+-0000 and an "is missing!" comment).
+
+Earlier versions of the code and data were not announced on the tz
+list and are not summarized here.
+
+This file is in the public domain.
+
+Local Variables:
+coding: utf-8
+End:
Deleted: vendor/tzcode/2016f/README
===================================================================
--- vendor/tzcode/dist/README 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/README 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,93 +0,0 @@
-README for the tz distribution
-
-This file is in the public domain, so clarified as of
-2009-05-17 by Arthur David Olson.
-
-"What time is it?" -- Richard Deacon as The King
-"Any time you want it to be." -- Frank Baxter as The Scientist
- (from the Bell System film "About Time")
-
-The 1989 update of the time zone package featured
-
-* POSIXization (including interpretation of POSIX-style TZ environment
- variables, provided by Guy Harris),
-* ANSIfication (including versions of "mktime" and "difftime"),
-* SVIDulation (an "altzone" variable)
-* MACHination (the "gtime" function)
-* corrections to some time zone data (including corrections to the rules
- for Great Britain and New Zealand)
-* reference data from the United States Naval Observatory for folks who
- want to do additional time zones
-* and the 1989 data for Saudi Arabia.
-
-(Since this code will be treated as "part of the implementation" in some places
-and as "part of the application" in others, there's no good way to name
-functions, such as timegm, that are not part of the proposed ANSI C standard;
-such functions have kept their old, underscore-free names in this update.)
-
-And the "dysize" function has disappeared; it was present to allow compilation
-of the "date" command on old BSD systems, and a version of "date" is now
-provided in the package. The "date" command is not created when you "make all"
-since it may lack options provided by the version distributed with your
-operating system, or may not interact with the system in the same way the
-native version does.
-
-Since POSIX frowns on correct leap second handling, the default behavior of
-the "zic" command (in the absence of a "-L" option) has been changed to omit
-leap second information from its output files.
-
-Here is a recipe for acquiring, building, installing, and testing the
-tz distribution on a GNU/Linux or similar host.
-
- mkdir tz
- cd tz
- wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
- gzip -dc tzcode-latest.tar.gz | tar -xf -
- gzip -dc tzdata-latest.tar.gz | tar -xf -
-
-Be sure to read the comments in "Makefile" and make any changes needed
-to make things right for your system, especially if you are using some
-platform other than GNU/Linux. Then run the following commands,
-substituting your desired installation directory for "$HOME/tzdir":
-
- make TOPDIR=$HOME/tzdir install
- $HOME/tzdir/etc/zdump -v America/Los_Angeles
-
-To use the new functions, use a "-ltz" option when compiling or linking.
-
-Historical local time information has been included here to:
-
-* provide a compendium of data about the history of civil time
- that is useful even if the data are not 100% accurate;
-
-* give an idea of the variety of local time rules that have
- existed in the past and thus an idea of the variety that may be
- expected in the future;
-
-* provide a test of the generality of the local time rule description
- system.
-
-The information in the time zone data files is by no means authoritative;
-the files currently do not even attempt to cover all time stamps before
-1970, and there are undoubtedly errors even for time stamps since 1970.
-If you know that the rules are different from those in a file, by all means
-feel free to change file (and please send the changed version to
-tz at iana.org for use in the future). Europeans take note!
-
-Thanks to these Timezone Caballeros who've made major contributions to the
-time conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
-Guy Harris; Mark Horton; John Mackin; and Bradley White. Thanks also to
-Michael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales
-for testing work, and to Gwillim Law for checking local mean time data.
-None of them are responsible for remaining errors.
-
-Look in <ftp://ftp.iana.org/tz/releases/>
-for updated versions of these files.
-
-Please send comments or information to tz at iana.org.
-
-Postscript: The README above is largely unmodified (aside from details
-of mailing list and ftp archive addresses) from that prepared many years
-ago by Arthur David Olson, to whom the timezone community owes the
-greatest debt of all. Arthur is not currently maintaining this data or
-code (though he remains involved).
Copied: vendor/tzcode/2016f/README (from rev 7736, vendor/tzcode/dist/README)
===================================================================
--- vendor/tzcode/2016f/README (rev 0)
+++ vendor/tzcode/2016f/README 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,63 @@
+README for the tz distribution
+
+"What time is it?" -- Richard Deacon as The King
+"Any time you want it to be." -- Frank Baxter as The Scientist
+ (from the Bell System film "About Time")
+
+The Time Zone Database (often called tz or zoneinfo) contains code and
+data that represent the history of local time for many representative
+locations around the globe. It is updated periodically to reflect
+changes made by political bodies to time zone boundaries, UTC offsets,
+and daylight-saving rules.
+
+Here is a recipe for acquiring, building, installing, and testing the
+tz distribution on a GNU/Linux or similar host.
+
+ mkdir tz
+ cd tz
+ wget --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
+ gzip -dc tzcode-latest.tar.gz | tar -xf -
+ gzip -dc tzdata-latest.tar.gz | tar -xf -
+
+Be sure to read the comments in "Makefile" and make any changes needed
+to make things right for your system, especially if you are using some
+platform other than GNU/Linux. Then run the following commands,
+substituting your desired installation directory for "$HOME/tzdir":
+
+ make TOPDIR=$HOME/tzdir install
+ $HOME/tzdir/etc/zdump -v America/Los_Angeles
+
+Historical local time information has been included here to:
+
+* provide a compendium of data about the history of civil time
+ that is useful even if not 100% accurate;
+
+* give an idea of the variety of local time rules that have
+ existed in the past and thus an idea of the variety that may be
+ expected in the future;
+
+* provide a test of the generality of the local time rule description
+ system.
+
+The information in the time zone data files is by no means authoritative;
+fixes and enhancements are welcome. Please see the file CONTRIBUTING
+for details.
+
+Thanks to these Time Zone Caballeros who've made major contributions to the
+time conversion package: Keith Bostic; Bob Devine; Paul Eggert; Robert Elz;
+Guy Harris; Mark Horton; John Mackin; and Bradley White. Thanks also to
+Michael Bloom, Art Neilson, Stephen Prince, John Sovereign, and Frank Wales
+for testing work, and to Gwillim Law for checking local mean time data.
+Thanks in particular to Arthur David Olson, the project's founder and first
+maintainer, to whom the time zone community owes the greatest debt of all.
+None of them are responsible for remaining errors.
+
+Look in <ftp://ftp.iana.org/tz/releases/> for updated versions of these files.
+
+Please send comments or information to tz at iana.org.
+
+-----
+
+This file is in the public domain, so clarified as of 2009-05-17 by
+Arthur David Olson. The other files in this distribution are either
+public domain or BSD licensed; see the file LICENSE for details.
Deleted: vendor/tzcode/2016f/Theory
===================================================================
--- vendor/tzcode/dist/Theory 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/Theory 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,593 +0,0 @@
-This file is in the public domain, so clarified as of
-2009-05-17 by Arthur David Olson.
-
------ Outline -----
-
- Time and date functions
- Scope of the tz database
- Names of time zone rule files
- Time zone abbreviations
- Calendrical issues
- Time and time zones on Mars
-
------ Time and date functions -----
-
-These time and date functions are upwards compatible with POSIX,
-an international standard for UNIX-like systems.
-As of this writing, the current edition of POSIX is:
-
- Standard for Information technology
- -- Portable Operating System Interface (POSIX (R))
- -- System Interfaces
- IEEE Std 1003.1, 2004 Edition
- <http://www.opengroup.org/online-pubs?DOC=7999959899>
- <http://www.opengroup.org/pubs/catalog/t041.htm>
-
-POSIX has the following properties and limitations.
-
-* In POSIX, time display in a process is controlled by the
- environment variable TZ. Unfortunately, the POSIX TZ string takes
- a form that is hard to describe and is error-prone in practice.
- Also, POSIX TZ strings can't deal with other (for example, Israeli)
- daylight saving time rules, or situations where more than two
- time zone abbreviations are used in an area.
-
- The POSIX TZ string takes the following form:
-
- stdoffset[dst[offset],date[/time],date[/time]]
-
- where:
-
- std and dst
- are 3 or more characters specifying the standard
- and daylight saving time (DST) zone names.
- Starting with POSIX.1-2001, std and dst may also be
- in a quoted form like "<UTC+10>"; this allows
- "+" and "-" in the names.
- offset
- is of the form `[-]hh:[mm[:ss]]' and specifies the
- offset west of UTC. The default DST offset is one hour
- ahead of standard time.
- date[/time],date[/time]
- specifies the beginning and end of DST. If this is absent,
- the system supplies its own rules for DST, and these can
- differ from year to year; typically US DST rules are used.
- time
- takes the form `hh:[mm[:ss]]' and defaults to 02:00.
- date
- takes one of the following forms:
- Jn (1<=n<=365)
- origin-1 day number not counting February 29
- n (0<=n<=365)
- origin-0 day number counting February 29 if present
- Mm.n.d (0[Sunday]<=d<=6[Saturday], 1<=n<=5, 1<=m<=12)
- for the dth day of week n of month m of the year,
- where week 1 is the first week in which day d appears,
- and `5' stands for the last week in which day d appears
- (which may be either the 4th or 5th week).
-
- Here is an example POSIX TZ string, for US Pacific time using rules
- appropriate from 1987 through 2006:
-
- TZ='PST8PDT,M4.1.0/02:00,M10.5.0/02:00'
-
- This POSIX TZ string is hard to remember, and mishandles time stamps
- before 1987 and after 2006. With this package you can use this
- instead:
-
- TZ='America/Los_Angeles'
-
-* POSIX does not define the exact meaning of TZ values like "EST5EDT".
- Typically the current US DST rules are used to interpret such values,
- but this means that the US DST rules are compiled into each program
- that does time conversion. This means that when US time conversion
- rules change (as in the United States in 1987), all programs that
- do time conversion must be recompiled to ensure proper results.
-
-* In POSIX, there's no tamper-proof way for a process to learn the
- system's best idea of local wall clock. (This is important for
- applications that an administrator wants used only at certain times--
- without regard to whether the user has fiddled the "TZ" environment
- variable. While an administrator can "do everything in UTC" to get
- around the problem, doing so is inconvenient and precludes handling
- daylight saving time shifts--as might be required to limit phone
- calls to off-peak hours.)
-
-* POSIX requires that systems ignore leap seconds.
-
-These are the extensions that have been made to the POSIX functions:
-
-* The "TZ" environment variable is used in generating the name of a file
- from which time zone information is read (or is interpreted a la
- POSIX); "TZ" is no longer constrained to be a three-letter time zone
- name followed by a number of hours and an optional three-letter
- daylight time zone name. The daylight saving time rules to be used
- for a particular time zone are encoded in the time zone file;
- the format of the file allows U.S., Australian, and other rules to be
- encoded, and allows for situations where more than two time zone
- abbreviations are used.
-
- It was recognized that allowing the "TZ" environment variable to
- take on values such as "America/New_York" might cause "old" programs
- (that expect "TZ" to have a certain form) to operate incorrectly;
- consideration was given to using some other environment variable
- (for example, "TIMEZONE") to hold the string used to generate the
- time zone information file name. In the end, however, it was decided
- to continue using "TZ": it is widely used for time zone purposes;
- separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance;
- and systems where "new" forms of "TZ" might cause problems can simply
- use TZ values such as "EST5EDT" which can be used both by
- "new" programs (a la POSIX) and "old" programs (as zone names and
- offsets).
-
-* To handle places where more than two time zone abbreviations are used,
- the functions "localtime" and "gmtime" set tzname[tmp->tm_isdst]
- (where "tmp" is the value the function returns) to the time zone
- abbreviation to be used. This differs from POSIX, where the elements
- of tzname are only changed as a result of calls to tzset.
-
-* Since the "TZ" environment variable can now be used to control time
- conversion, the "daylight" and "timezone" variables are no longer
- needed. (These variables are defined and set by "tzset"; however, their
- values will not be used by "localtime.")
-
-* The "localtime" function has been set up to deliver correct results
- for near-minimum or near-maximum time_t values. (A comment in the
- source code tells how to get compatibly wrong results).
-
-* A function "tzsetwall" has been added to arrange for the system's
- best approximation to local wall clock time to be delivered by
- subsequent calls to "localtime." Source code for portable
- applications that "must" run on local wall clock time should call
- "tzsetwall();" if such code is moved to "old" systems that don't
- provide tzsetwall, you won't be able to generate an executable program.
- (These time zone functions also arrange for local wall clock time to be
- used if tzset is called--directly or indirectly--and there's no "TZ"
- environment variable; portable applications should not, however, rely
- on this behavior since it's not the way SVR2 systems behave.)
-
-* These functions can account for leap seconds, thanks to Bradley White.
-
-Points of interest to folks with other systems:
-
-* This package is already part of many POSIX-compliant hosts,
- including BSD, HP, Linux, Network Appliance, SCO, SGI, and Sun.
- On such hosts, the primary use of this package
- is to update obsolete time zone rule tables.
- To do this, you may need to compile the time zone compiler
- `zic' supplied with this package instead of using the system `zic',
- since the format of zic's input changed slightly in late 1994,
- and many vendors still do not support the new input format.
-
-* The UNIX Version 7 "timezone" function is not present in this package;
- it's impossible to reliably map timezone's arguments (a "minutes west
- of GMT" value and a "daylight saving time in effect" flag) to a
- time zone abbreviation, and we refuse to guess.
- Programs that in the past used the timezone function may now examine
- tzname[localtime(&clock)->tm_isdst] to learn the correct time
- zone abbreviation to use. Alternatively, use
- localtime(&clock)->tm_zone if this has been enabled.
-
-* The 4.2BSD gettimeofday function is not used in this package.
- This formerly let users obtain the current UTC offset and DST flag,
- but this functionality was removed in later versions of BSD.
-
-* In SVR2, time conversion fails for near-minimum or near-maximum
- time_t values when doing conversions for places that don't use UTC.
- This package takes care to do these conversions correctly.
-
-The functions that are conditionally compiled if STD_INSPIRED is defined
-should, at this point, be looked on primarily as food for thought. They are
-not in any sense "standard compatible"--some are not, in fact, specified in
-*any* standard. They do, however, represent responses of various authors to
-standardization proposals.
-
-Other time conversion proposals, in particular the one developed by folks at
-Hewlett Packard, offer a wider selection of functions that provide capabilities
-beyond those provided here. The absence of such functions from this package
-is not meant to discourage the development, standardization, or use of such
-functions. Rather, their absence reflects the decision to make this package
-contain valid extensions to POSIX, to ensure its broad acceptability. If
-more powerful time conversion functions can be standardized, so much the
-better.
-
-
------ Scope of the tz database -----
-
-The tz database attempts to record the history and predicted future of
-all computer-based clocks that track civil time. To represent this
-data, the world is partitioned into regions whose clocks all agree
-about time stamps that occur after the somewhat-arbitrary cutoff point
-of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region,
-the database records all known clock transitions, and labels the region
-with a notable location.
-
-Clock transitions before 1970 are recorded for each such location,
-because most POSIX-compatible systems support negative time stamps and
-could misbehave if data were omitted for pre-1970 transitions.
-However, the database is not designed for and does not suffice for
-applications requiring accurate handling of all past times everywhere,
-as it would take far too much effort and guesswork to record all
-details of pre-1970 civil timekeeping.
-
-As noted in the README file, the tz database is not authoritative
-(particularly not for pre-1970 time stamps), and it surely has errors.
-Corrections are welcome and encouraged. Users requiring authoritative
-data should consult national standards bodies and the references cited
-in the database's comments.
-
-
------ Names of time zone rule files -----
-
-The time zone rule file naming conventions attempt to strike a balance
-among the following goals:
-
- * Uniquely identify every national region where clocks have all
- agreed since 1970. This is essential for the intended use: static
- clocks keeping local civil time.
-
- * Indicate to humans as to where that region is. This simplifies use.
-
- * Be robust in the presence of political changes. This reduces the
- number of updates and backward-compatibility hacks. For example,
- names of countries are ordinarily not used, to avoid
- incompatibilities when countries change their name
- (e.g. Zaire->Congo) or when locations change countries
- (e.g. Hong Kong from UK colony to China).
-
- * Be portable to a wide variety of implementations.
- This promotes use of the technology.
-
- * Use a consistent naming convention over the entire world.
- This simplifies both use and maintenance.
-
-This naming convention is not intended for use by inexperienced users
-to select TZ values by themselves (though they can of course examine
-and reuse existing settings). Distributors should provide
-documentation and/or a simple selection interface that explains the
-names; see the 'tzselect' program supplied with this distribution for
-one example.
-
-Names normally have the form AREA/LOCATION, where AREA is the name
-of a continent or ocean, and LOCATION is the name of a specific
-location within that region. North and South America share the same
-area, `America'. Typical names are `Africa/Cairo', `America/New_York',
-and `Pacific/Honolulu'.
-
-Here are the general rules used for choosing location names,
-in decreasing order of importance:
-
- Use only valid POSIX file name components (i.e., the parts of
- names other than `/'). Within a file name component,
- use only ASCII letters, `.', `-' and `_'. Do not use
- digits, as that might create an ambiguity with POSIX
- TZ strings. A file name component must not exceed 14
- characters or start with `-'. E.g., prefer `Brunei'
- to `Bandar_Seri_Begawan'.
- Include at least one location per time zone rule set per country.
- One such location is enough. Use ISO 3166 (see the file
- iso3166.tab) to help decide whether something is a country.
- However, uninhabited ISO 3166 regions like Bouvet Island
- do not need locations, since local time is not defined there.
- If all the clocks in a country's region have agreed since 1970,
- don't bother to include more than one location
- even if subregions' clocks disagreed before 1970.
- Otherwise these tables would become annoyingly large.
- If a name is ambiguous, use a less ambiguous alternative;
- e.g. many cities are named San Jose and Georgetown, so
- prefer `Costa_Rica' to `San_Jose' and `Guyana' to `Georgetown'.
- Keep locations compact. Use cities or small islands, not countries
- or regions, so that any future time zone changes do not split
- locations into different time zones. E.g. prefer `Paris'
- to `France', since France has had multiple time zones.
- Use mainstream English spelling, e.g. prefer `Rome' to `Roma', and
- prefer `Athens' to the true name (which uses Greek letters).
- The POSIX file name restrictions encourage this rule.
- Use the most populous among locations in a country's time zone,
- e.g. prefer `Shanghai' to `Beijing'. Among locations with
- similar populations, pick the best-known location,
- e.g. prefer `Rome' to `Milan'.
- Use the singular form, e.g. prefer `Canary' to `Canaries'.
- Omit common suffixes like `_Islands' and `_City', unless that
- would lead to ambiguity. E.g. prefer `Cayman' to
- `Cayman_Islands' and `Guatemala' to `Guatemala_City',
- but prefer `Mexico_City' to `Mexico' because the country
- of Mexico has several time zones.
- Use `_' to represent a space.
- Omit `.' from abbreviations in names, e.g. prefer `St_Helena'
- to `St._Helena'.
- Do not change established names if they only marginally
- violate the above rules. For example, don't change
- the existing name `Rome' to `Milan' merely because
- Milan's population has grown to be somewhat greater
- than Rome's.
- If a name is changed, put its old spelling in the `backward' file.
-
-The file `zone.tab' lists the geographical locations used to name
-time zone rule files. It is intended to be an exhaustive list
-of canonical names for geographic regions.
-
-Older versions of this package used a different naming scheme,
-and these older names are still supported.
-See the file `backward' for most of these older names
-(e.g. `US/Eastern' instead of `America/New_York').
-The other old-fashioned names still supported are
-`WET', `CET', `MET', and `EET' (see the file `europe').
-
-
------ Time zone abbreviations -----
-
-When this package is installed, it generates time zone abbreviations
-like `EST' to be compatible with human tradition and POSIX.
-Here are the general rules used for choosing time zone abbreviations,
-in decreasing order of importance:
-
- Use abbreviations that consist of three or more ASCII letters.
- Previous editions of this database also used characters like
- ' ' and '?', but these characters have a special meaning to
- the shell and cause commands like
- set `date`
- to have unexpected effects.
- Previous editions of this rule required upper-case letters,
- but the Congressman who introduced Chamorro Standard Time
- preferred "ChST", so the rule has been relaxed.
-
- This rule guarantees that all abbreviations could have
- been specified by a POSIX TZ string. POSIX
- requires at least three characters for an
- abbreviation. POSIX through 2000 says that an abbreviation
- cannot start with ':', and cannot contain ',', '-',
- '+', NUL, or a digit. POSIX from 2001 on changes this
- rule to say that an abbreviation can contain only '-', '+',
- and alphanumeric characters from the portable character set
- in the current locale. To be portable to both sets of
- rules, an abbreviation must therefore use only ASCII
- letters.
-
- Use abbreviations that are in common use among English-speakers,
- e.g. `EST' for Eastern Standard Time in North America.
- We assume that applications translate them to other languages
- as part of the normal localization process; for example,
- a French application might translate `EST' to `HNE'.
-
- For zones whose times are taken from a city's longitude, use the
- traditional xMT notation, e.g. `PMT' for Paris Mean Time.
- The only name like this in current use is `GMT'.
-
- If there is no common English abbreviation, abbreviate the English
- translation of the usual phrase used by native speakers.
- If this is not available or is a phrase mentioning the country
- (e.g. ``Cape Verde Time''), then:
-
- When a country has a single or principal time zone region,
- append `T' to the country's ISO code, e.g. `CVT' for
- Cape Verde Time. For summer time append `ST';
- for double summer time append `DST'; etc.
- When a country has multiple time zones, take the first three
- letters of an English place name identifying each zone
- and then append `T', `ST', etc. as before;
- e.g. `VLAST' for VLAdivostok Summer Time.
-
- Use UTC (with time zone abbreviation "zzz") for locations while
- uninhabited. The "zzz" mnemonic is that these locations are,
- in some sense, asleep.
-
-Application writers should note that these abbreviations are ambiguous
-in practice: e.g. `EST' has a different meaning in Australia than
-it does in the United States. In new applications, it's often better
-to use numeric UTC offsets like `-0500' instead of time zone
-abbreviations like `EST'; this avoids the ambiguity.
-
-
------ Calendrical issues -----
-
-Calendrical issues are a bit out of scope for a time zone database,
-but they indicate the sort of problems that we would run into if we
-extended the time zone database further into the past. An excellent
-resource in this area is Nachum Dershowitz and Edward M. Reingold,
-<a href="http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/">
-Calendrical Calculations: Third Edition
-</a>, Cambridge University Press (2008). Other information and
-sources are given below. They sometimes disagree.
-
-
-France
-
-Gregorian calendar adopted 1582-12-20.
-French Revolutionary calendar used 1793-11-24 through 1805-12-31,
-and (in Paris only) 1871-05-06 through 1871-05-23.
-
-
-Russia
-
-From Chris Carrier (1996-12-02):
-On 1929-10-01 the Soviet Union instituted an ``Eternal Calendar''
-with 30-day months plus 5 holidays, with a 5-day week.
-On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the
-Gregorian calendar while retaining the 6-day week; on 1940-06-27 it
-reverted to the 7-day week. With the 6-day week the usual days
-off were the 6th, 12th, 18th, 24th and 30th of the month.
-(Source: Evitiar Zerubavel, _The Seven Day Circle_)
-
-
-Mark Brader reported a similar story in "The Book of Calendars", edited
-by Frank Parise (1982, Facts on File, ISBN 0-8719-6467-8), page 377. But:
-
-From: Petteri Sulonen (via Usenet)
-Date: 14 Jan 1999 00:00:00 GMT
-...
-
-If your source is correct, how come documents between 1929 -- 1940 were
-still dated using the conventional, Gregorian calendar?
-
-I can post a scan of a document dated December 1, 1934, signed by
-Yenukidze, the secretary, on behalf of Kalinin, the President of the
-Executive Committee of the Supreme Soviet, if you like.
-
-
-
-Sweden (and Finland)
-
-From: Mark Brader
-<a href="news:1996Jul6.012937.29190 at sq.com">
-Subject: Re: Gregorian reform -- a part of locale?
-</a>
-Date: 1996-07-06
-
-In 1700, Denmark made the transition from Julian to Gregorian. Sweden
-decided to *start* a transition in 1700 as well, but rather than have one of
-those unsightly calendar gaps :-), they simply decreed that the next leap
-year after 1696 would be in 1744 -- putting the whole country on a calendar
-different from both Julian and Gregorian for a period of 40 years.
-
-However, in 1704 something went wrong and the plan was not carried through;
-they did, after all, have a leap year that year. And one in 1708. In 1712
-they gave it up and went back to Julian, putting 30 days in February that
-year!...
-
-Then in 1753, Sweden made the transition to Gregorian in the usual manner,
-getting there only 13 years behind the original schedule.
-
-(A previous posting of this story was challenged, and Swedish readers
-produced the following references to support it: "Tiderakning och historia"
-by Natanael Beckman (1924) and "Tid, en bok om tiderakning och
-kalendervasen" by Lars-Olof Lode'n (no date was given).)
-
-
-Grotefend's data
-
-From: "Michael Palmer" [with one obvious typo fixed]
-Subject: Re: Gregorian Calendar (was Re: Another FHC related question
-Newsgroups: soc.genealogy.german
-Date: Tue, 9 Feb 1999 02:32:48 -800
-...
-
-The following is a(n incomplete) listing, arranged chronologically, of
-European states, with the date they converted from the Julian to the
-Gregorian calendar:
-
-04/15 Oct 1582 - Italy (with exceptions), Spain, Portugal, Poland (Roman
- Catholics and Danzig only)
-09/20 Dec 1582 - France, Lorraine
-
-21 Dec 1582/
- 01 Jan 1583 - Holland, Brabant, Flanders, Hennegau
-10/21 Feb 1583 - bishopric of Liege (L"uttich)
-13/24 Feb 1583 - bishopric of Augsburg
-04/15 Oct 1583 - electorate of Trier
-05/16 Oct 1583 - Bavaria, bishoprics of Freising, Eichstedt, Regensburg,
- Salzburg, Brixen
-13/24 Oct 1583 - Austrian Oberelsass and Breisgau
-20/31 Oct 1583 - bishopric of Basel
-02/13 Nov 1583 - duchy of J"ulich-Berg
-02/13 Nov 1583 - electorate and city of K"oln
-04/15 Nov 1583 - bishopric of W"urzburg
-11/22 Nov 1583 - electorate of Mainz
-16/27 Nov 1583 - bishopric of Strassburg and the margraviate of Baden
-17/28 Nov 1583 - bishopric of M"unster and duchy of Cleve
-14/25 Dec 1583 - Steiermark
-
-06/17 Jan 1584 - Austria and Bohemia
-11/22 Jan 1584 - Luzern, Uri, Schwyz, Zug, Freiburg, Solothurn
-12/23 Jan 1584 - Silesia and the Lausitz
-22 Jan/
- 02 Feb 1584 - Hungary (legally on 21 Oct 1587)
- Jun 1584 - Unterwalden
-01/12 Jul 1584 - duchy of Westfalen
-
-16/27 Jun 1585 - bishopric of Paderborn
-
-14/25 Dec 1590 - Transylvania
-
-22 Aug/
- 02 Sep 1612 - duchy of Prussia
-
-13/24 Dec 1614 - Pfalz-Neuburg
-
- 1617 - duchy of Kurland (reverted to the Julian calendar in
- 1796)
-
- 1624 - bishopric of Osnabr"uck
-
- 1630 - bishopric of Minden
-
-15/26 Mar 1631 - bishopric of Hildesheim
-
- 1655 - Kanton Wallis
-
-05/16 Feb 1682 - city of Strassburg
-
-18 Feb/
- 01 Mar 1700 - Protestant Germany (including Swedish possessions in
- Germany), Denmark, Norway
-30 Jun/
- 12 Jul 1700 - Gelderland, Zutphen
-10 Nov/
- 12 Dec 1700 - Utrecht, Overijssel
-
-31 Dec 1700/
- 12 Jan 1701 - Friesland, Groningen, Z"urich, Bern, Basel, Geneva,
- Turgau, and Schaffhausen
-
- 1724 - Glarus, Appenzell, and the city of St. Gallen
-
-01 Jan 1750 - Pisa and Florence
-
-02/14 Sep 1752 - Great Britain
-
-17 Feb/
- 01 Mar 1753 - Sweden
-
-1760-1812 - Graub"unden
-
-The Russian empire (including Finland and the Baltic states) did not
-convert to the Gregorian calendar until the Soviet revolution of 1917.
-
-Source: H. Grotefend, _Taschenbuch der Zeitrechnung des deutschen
-Mittelalters und der Neuzeit_, herausgegeben von Dr. O. Grotefend
-(Hannover: Hahnsche Buchhandlung, 1941), pp. 26-28.
-
-
------ Time and time zones on Mars -----
-
-Some people have adjusted their work schedules to fit Mars time.
-Dozens of special Mars watches were built for Jet Propulsion
-Laboratory workers who kept Mars time during the Mars Exploration
-Rovers mission (2004). These timepieces look like normal Seikos and
-Citizens but use Mars seconds rather than terrestrial seconds.
-
-A Mars solar day is called a "sol" and has a mean period equal to
-about 24 hours 39 minutes 35.244 seconds in terrestrial time. It is
-divided into a conventional 24-hour clock, so each Mars second equals
-about 1.02749125 terrestrial seconds.
-
-The prime meridian of Mars goes through the center of the crater
-Airy-0, named in honor of the British astronomer who built the
-Greenwich telescope that defines Earth's prime meridian. Mean solar
-time on the Mars prime meridian is called Mars Coordinated Time (MTC).
-
-Each landed mission on Mars has adopted a different reference for
-solar time keeping, so there is no real standard for Mars time zones.
-For example, the Mars Exploration Rover project (2004) defined two
-time zones "Local Solar Time A" and "Local Solar Time B" for its two
-missions, each zone designed so that its time equals local true solar
-time at approximately the middle of the nominal mission. Such a "time
-zone" is not particularly suited for any application other than the
-mission itself.
-
-Many calendars have been proposed for Mars, but none have achieved
-wide acceptance. Astronomers often use Mars Sol Date (MSD) which is a
-sequential count of Mars solar days elapsed since about 1873-12-29
-12:00 GMT.
-
-The tz database does not currently support Mars time, but it is
-documented here in the hopes that support will be added eventually.
-
-Sources:
-
-Michael Allison and Robert Schmunk,
-"Technical Notes on Mars Solar Time as Adopted by the Mars24 Sunclock"
-<http://www.giss.nasa.gov/tools/mars24/help/notes.html> (2004-07-30).
-
-Jia-Rui Chong, "Workdays Fit for a Martian", Los Angeles Times
-(2004-01-14), pp A1, A20-A21.
Copied: vendor/tzcode/2016f/Theory (from rev 7736, vendor/tzcode/dist/Theory)
===================================================================
--- vendor/tzcode/2016f/Theory (rev 0)
+++ vendor/tzcode/2016f/Theory 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,796 @@
+Theory and pragmatics of the tz code and data
+
+
+----- Outline -----
+
+ Scope of the tz database
+ Names of time zone rules
+ Time zone abbreviations
+ Accuracy of the tz database
+ Time and date functions
+ Calendrical issues
+ Time and time zones on Mars
+
+
+----- Scope of the tz database -----
+
+The tz database attempts to record the history and predicted future of
+all computer-based clocks that track civil time. To represent this
+data, the world is partitioned into regions whose clocks all agree
+about time stamps that occur after the somewhat-arbitrary cutoff point
+of the POSIX Epoch (1970-01-01 00:00:00 UTC). For each such region,
+the database records all known clock transitions, and labels the region
+with a notable location. Although 1970 is a somewhat-arbitrary
+cutoff, there are significant challenges to moving the cutoff earlier
+even by a decade or two, due to the wide variety of local practices
+before computer timekeeping became prevalent.
+
+Clock transitions before 1970 are recorded for each such location,
+because most systems support time stamps before 1970 and could
+misbehave if data entries were omitted for pre-1970 transitions.
+However, the database is not designed for and does not suffice for
+applications requiring accurate handling of all past times everywhere,
+as it would take far too much effort and guesswork to record all
+details of pre-1970 civil timekeeping.
+
+As described below, reference source code for using the tz database is
+also available. The tz code is upwards compatible with POSIX, an
+international standard for UNIX-like systems. As of this writing, the
+current edition of POSIX is:
+
+ The Open Group Base Specifications Issue 7
+ IEEE Std 1003.1, 2013 Edition
+ <http://pubs.opengroup.org/onlinepubs/9699919799/>
+
+
+
+----- Names of time zone rules -----
+
+Each of the database's time zone rules has a unique name.
+Inexperienced users are not expected to select these names unaided.
+Distributors should provide documentation and/or a simple selection
+interface that explains the names; for one example, see the 'tzselect'
+program in the tz code. The Unicode Common Locale Data Repository
+<http://cldr.unicode.org/> contains data that may be useful for other
+selection interfaces.
+
+The time zone rule naming conventions attempt to strike a balance
+among the following goals:
+
+ * Uniquely identify every region where clocks have agreed since 1970.
+ This is essential for the intended use: static clocks keeping local
+ civil time.
+
+ * Indicate to experts where that region is.
+
+ * Be robust in the presence of political changes. For example, names
+ of countries are ordinarily not used, to avoid incompatibilities
+ when countries change their name (e.g. Zaire->Congo) or when
+ locations change countries (e.g. Hong Kong from UK colony to
+ China).
+
+ * Be portable to a wide variety of implementations.
+
+ * Use a consistent naming conventions over the entire world.
+
+Names normally have the form AREA/LOCATION, where AREA is the name
+of a continent or ocean, and LOCATION is the name of a specific
+location within that region. North and South America share the same
+area, 'America'. Typical names are 'Africa/Cairo', 'America/New_York',
+and 'Pacific/Honolulu'.
+
+Here are the general rules used for choosing location names,
+in decreasing order of importance:
+
+ Use only valid POSIX file name components (i.e., the parts of
+ names other than '/'). Do not use the file name
+ components '.' and '..'. Within a file name component,
+ use only ASCII letters, '.', '-' and '_'. Do not use
+ digits, as that might create an ambiguity with POSIX
+ TZ strings. A file name component must not exceed 14
+ characters or start with '-'. E.g., prefer 'Brunei'
+ to 'Bandar_Seri_Begawan'. Exceptions: see the discussion
+ of legacy names below.
+ A name must not be empty, or contain '//', or start or end with '/'.
+ Do not use names that differ only in case. Although the reference
+ implementation is case-sensitive, some other implementations
+ are not, and they would mishandle names differing only in case.
+ If one name A is an initial prefix of another name AB (ignoring case),
+ then B must not start with '/', as a regular file cannot have
+ the same name as a directory in POSIX. For example,
+ 'America/New_York' precludes 'America/New_York/Bronx'.
+ Uninhabited regions like the North Pole and Bouvet Island
+ do not need locations, since local time is not defined there.
+ There should typically be at least one name for each ISO 3166-1
+ officially assigned two-letter code for an inhabited country
+ or territory.
+ If all the clocks in a region have agreed since 1970,
+ don't bother to include more than one location
+ even if subregions' clocks disagreed before 1970.
+ Otherwise these tables would become annoyingly large.
+ If a name is ambiguous, use a less ambiguous alternative;
+ e.g. many cities are named San José and Georgetown, so
+ prefer 'Costa_Rica' to 'San_Jose' and 'Guyana' to 'Georgetown'.
+ Keep locations compact. Use cities or small islands, not countries
+ or regions, so that any future time zone changes do not split
+ locations into different time zones. E.g. prefer 'Paris'
+ to 'France', since France has had multiple time zones.
+ Use mainstream English spelling, e.g. prefer 'Rome' to 'Roma', and
+ prefer 'Athens' to the Greek 'Αθήνα' or the Romanized 'Athína'.
+ The POSIX file name restrictions encourage this rule.
+ Use the most populous among locations in a zone,
+ e.g. prefer 'Shanghai' to 'Beijing'. Among locations with
+ similar populations, pick the best-known location,
+ e.g. prefer 'Rome' to 'Milan'.
+ Use the singular form, e.g. prefer 'Canary' to 'Canaries'.
+ Omit common suffixes like '_Islands' and '_City', unless that
+ would lead to ambiguity. E.g. prefer 'Cayman' to
+ 'Cayman_Islands' and 'Guatemala' to 'Guatemala_City',
+ but prefer 'Mexico_City' to 'Mexico' because the country
+ of Mexico has several time zones.
+ Use '_' to represent a space.
+ Omit '.' from abbreviations in names, e.g. prefer 'St_Helena'
+ to 'St._Helena'.
+ Do not change established names if they only marginally
+ violate the above rules. For example, don't change
+ the existing name 'Rome' to 'Milan' merely because
+ Milan's population has grown to be somewhat greater
+ than Rome's.
+ If a name is changed, put its old spelling in the 'backward' file.
+ This means old spellings will continue to work.
+
+The file 'zone1970.tab' lists geographical locations used to name time
+zone rules. It is intended to be an exhaustive list of names for
+geographic regions as described above; this is a subset of the names
+in the data. Although a 'zone1970.tab' location's longitude
+corresponds to its LMT offset with one hour for every 15 degrees east
+longitude, this relationship is not exact.
+
+Older versions of this package used a different naming scheme,
+and these older names are still supported.
+See the file 'backward' for most of these older names
+(e.g., 'US/Eastern' instead of 'America/New_York').
+The other old-fashioned names still supported are
+'WET', 'CET', 'MET', and 'EET' (see the file 'europe').
+
+Older versions of this package defined legacy names that are
+incompatible with the first rule of location names, but which are
+still supported. These legacy names are mostly defined in the file
+'etcetera'. Also, the file 'backward' defines the legacy names
+'GMT0', 'GMT-0', 'GMT+0' and 'Canada/East-Saskatchewan', and the file
+'northamerica' defines the legacy names 'EST5EDT', 'CST6CDT',
+'MST7MDT', and 'PST8PDT'.
+
+Excluding 'backward' should not affect the other data. If
+'backward' is excluded, excluding 'etcetera' should not affect the
+remaining data.
+
+
+----- Time zone abbreviations -----
+
+When this package is installed, it generates time zone abbreviations
+like 'EST' to be compatible with human tradition and POSIX.
+Here are the general rules used for choosing time zone abbreviations,
+in decreasing order of importance:
+
+ Use three or more characters that are ASCII alphanumerics or '+' or '-'.
+ Previous editions of this database also used characters like
+ ' ' and '?', but these characters have a special meaning to
+ the shell and cause commands like
+ set `date`
+ to have unexpected effects.
+ Previous editions of this rule required upper-case letters,
+ but the Congressman who introduced Chamorro Standard Time
+ preferred "ChST", so lower-case letters are now allowed.
+ Also, POSIX from 2001 on relaxed the rule to allow '-', '+',
+ and alphanumeric characters from the portable character set
+ in the current locale. In practice ASCII alphanumerics and
+ '+' and '-' are safe in all locales.
+
+ In other words, in the C locale the POSIX extended regular
+ expression [-+[:alnum:]]{3,} should match the abbreviation.
+ This guarantees that all abbreviations could have been
+ specified by a POSIX TZ string.
+
+ Use abbreviations that are in common use among English-speakers,
+ e.g. 'EST' for Eastern Standard Time in North America.
+ We assume that applications translate them to other languages
+ as part of the normal localization process; for example,
+ a French application might translate 'EST' to 'HNE'.
+
+ For zones whose times are taken from a city's longitude, use the
+ traditional xMT notation, e.g. 'PMT' for Paris Mean Time.
+ The only name like this in current use is 'GMT'.
+
+ Use 'LMT' for local mean time of locations before the introduction
+ of standard time; see "Scope of the tz database".
+
+ If there is no common English abbreviation, use numeric offsets like
+ -05 and +0830 that are generated by zic's %z notation.
+
+ [The remaining guidelines predate the introduction of %z.
+ They are problematic as they mean tz data entries invent
+ notation rather than record it. These guidelines are now
+ deprecated and the plan is to gradually move to %z for
+ inhabited locations and to "-00" for uninhabited locations.]
+
+ If there is no common English abbreviation, abbreviate the English
+ translation of the usual phrase used by native speakers.
+ If this is not available or is a phrase mentioning the country
+ (e.g. "Cape Verde Time"), then:
+
+ When a country is identified with a single or principal zone,
+ append 'T' to the country's ISO code, e.g. 'CVT' for
+ Cape Verde Time. For summer time append 'ST';
+ for double summer time append 'DST'; etc.
+ Otherwise, take the first three letters of an English place
+ name identifying each zone and append 'T', 'ST', etc.
+ as before; e.g. 'VLAST' for VLAdivostok Summer Time.
+
+ Use UT (with time zone abbreviation '-00') for locations while
+ uninhabited. The leading '-' is a flag that the time
+ zone is in some sense undefined; this notation is
+ derived from Internet RFC 3339.
+
+Application writers should note that these abbreviations are ambiguous
+in practice: e.g. 'CST' has a different meaning in China than
+it does in the United States. In new applications, it's often better
+to use numeric UT offsets like '-0600' instead of time zone
+abbreviations like 'CST'; this avoids the ambiguity.
+
+
+----- Accuracy of the tz database -----
+
+The tz database is not authoritative, and it surely has errors.
+Corrections are welcome and encouraged; see the file CONTRIBUTING.
+Users requiring authoritative data should consult national standards
+bodies and the references cited in the database's comments.
+
+Errors in the tz database arise from many sources:
+
+ * The tz database predicts future time stamps, and current predictions
+ will be incorrect after future governments change the rules.
+ For example, if today someone schedules a meeting for 13:00 next
+ October 1, Casablanca time, and tomorrow Morocco changes its
+ daylight saving rules, software can mess up after the rule change
+ if it blithely relies on conversions made before the change.
+
+ * The pre-1970 entries in this database cover only a tiny sliver of how
+ clocks actually behaved; the vast majority of the necessary
+ information was lost or never recorded. Thousands more zones would
+ be needed if the tz database's scope were extended to cover even
+ just the known or guessed history of standard time; for example,
+ the current single entry for France would need to split into dozens
+ of entries, perhaps hundreds. And in most of the world even this
+ approach would be misleading due to widespread disagreement or
+ indifference about what times should be observed. In her 2015 book
+ "The Global Transformation of Time, 1870-1950", Vanessa Ogle writes
+ "Outside of Europe and North America there was no system of time
+ zones at all, often not even a stable landscape of mean times,
+ prior to the middle decades of the twentieth century". See:
+ Timothy Shenk, Booked: A Global History of Time. Dissent 2015-12-17
+ https://www.dissentmagazine.org/blog/booked-a-global-history-of-time-vanessa-ogle
+
+ * Most of the pre-1970 data entries come from unreliable sources, often
+ astrology books that lack citations and whose compilers evidently
+ invented entries when the true facts were unknown, without
+ reporting which entries were known and which were invented.
+ These books often contradict each other or give implausible entries,
+ and on the rare occasions when they are checked they are
+ typically found to be incorrect.
+
+ * For the UK the tz database relies on years of first-class work done by
+ Joseph Myers and others; see <http://www.polyomino.org.uk/british-time/>.
+ Other countries are not done nearly as well.
+
+ * Sometimes, different people in the same city would maintain clocks
+ that differed significantly. Railway time was used by railroad
+ companies (which did not always agree with each other),
+ church-clock time was used for birth certificates, etc.
+ Often this was merely common practice, but sometimes it was set by law.
+ For example, from 1891 to 1911 the UT offset in France was legally
+ 0:09:21 outside train stations and 0:04:21 inside.
+
+ * Although a named location in the tz database stands for the
+ containing region, its pre-1970 data entries are often accurate for
+ only a small subset of that region. For example, Europe/London
+ stands for the United Kingdom, but its pre-1847 times are valid
+ only for locations that have London's exact meridian, and its 1847
+ transition to GMT is known to be valid only for the L&NW and the
+ Caledonian railways.
+
+ * The tz database does not record the earliest time for which a zone's
+ data entries are thereafter valid for every location in the region.
+ For example, Europe/London is valid for all locations in its
+ region after GMT was made the standard time, but the date of
+ standardization (1880-08-02) is not in the tz database, other than
+ in commentary. For many zones the earliest time of validity is
+ unknown.
+
+ * The tz database does not record a region's boundaries, and in many
+ cases the boundaries are not known. For example, the zone
+ America/Kentucky/Louisville represents a region around the city of
+ Louisville, the boundaries of which are unclear.
+
+ * Changes that are modeled as instantaneous transitions in the tz
+ database were often spread out over hours, days, or even decades.
+
+ * Even if the time is specified by law, locations sometimes
+ deliberately flout the law.
+
+ * Early timekeeping practices, even assuming perfect clocks, were
+ often not specified to the accuracy that the tz database requires.
+
+ * Sometimes historical timekeeping was specified more precisely
+ than what the tz database can handle. For example, from 1909 to
+ 1937 Netherlands clocks were legally UT+00:19:32.13, but the tz
+ database cannot represent the fractional second.
+
+ * Even when all the timestamp transitions recorded by the tz database
+ are correct, the tz rules that generate them may not faithfully
+ reflect the historical rules. For example, from 1922 until World
+ War II the UK moved clocks forward the day following the third
+ Saturday in April unless that was Easter, in which case it moved
+ clocks forward the previous Sunday. Because the tz database has no
+ way to specify Easter, these exceptional years are entered as
+ separate tz Rule lines, even though the legal rules did not change.
+
+ * The tz database models pre-standard time using the proleptic Gregorian
+ calendar and local mean time (LMT), but many people used other
+ calendars and other timescales. For example, the Roman Empire used
+ the Julian calendar, and had 12 varying-length daytime hours with a
+ non-hour-based system at night.
+
+ * Early clocks were less reliable, and data entries do not represent
+ this unreliability.
+
+ * As for leap seconds, civil time was not based on atomic time before
+ 1972, and we don't know the history of earth's rotation accurately
+ enough to map SI seconds to historical solar time to more than
+ about one-hour accuracy. See: Morrison LV, Stephenson FR.
+ Historical values of the Earth's clock error Delta T and the
+ calculation of eclipses. J Hist Astron. 2004;35:327-36
+ <http://adsabs.harvard.edu/full/2004JHA....35..327M>;
+ Historical values of the Earth's clock error. J Hist Astron. 2005;36:339
+ <http://adsabs.harvard.edu/full/2005JHA....36..339M>.
+
+ * The relationship between POSIX time (that is, UTC but ignoring leap
+ seconds) and UTC is not agreed upon after 1972. Although the POSIX
+ clock officially stops during an inserted leap second, at least one
+ proposed standard has it jumping back a second instead; and in
+ practice POSIX clocks more typically either progress glacially during
+ a leap second, or are slightly slowed while near a leap second.
+
+ * The tz database does not represent how uncertain its information is.
+ Ideally it would contain information about when data entries are
+ incomplete or dicey. Partial temporal knowledge is a field of
+ active research, though, and it's not clear how to apply it here.
+
+In short, many, perhaps most, of the tz database's pre-1970 and future
+time stamps are either wrong or misleading. Any attempt to pass the
+tz database off as the definition of time should be unacceptable to
+anybody who cares about the facts. In particular, the tz database's
+LMT offsets should not be considered meaningful, and should not prompt
+creation of zones merely because two locations differ in LMT or
+transitioned to standard time at different dates.
+
+
+----- Time and date functions -----
+
+The tz code contains time and date functions that are upwards
+compatible with those of POSIX.
+
+POSIX has the following properties and limitations.
+
+* In POSIX, time display in a process is controlled by the
+ environment variable TZ. Unfortunately, the POSIX TZ string takes
+ a form that is hard to describe and is error-prone in practice.
+ Also, POSIX TZ strings can't deal with other (for example, Israeli)
+ daylight saving time rules, or situations where more than two
+ time zone abbreviations are used in an area.
+
+ The POSIX TZ string takes the following form:
+
+ stdoffset[dst[offset][,date[/time],date[/time]]]
+
+ where:
+
+ std and dst
+ are 3 or more characters specifying the standard
+ and daylight saving time (DST) zone names.
+ Starting with POSIX.1-2001, std and dst may also be
+ in a quoted form like "<UTC+10>"; this allows
+ "+" and "-" in the names.
+ offset
+ is of the form '[+-]hh:[mm[:ss]]' and specifies the
+ offset west of UT. 'hh' may be a single digit; 0<=hh<=24.
+ The default DST offset is one hour ahead of standard time.
+ date[/time],date[/time]
+ specifies the beginning and end of DST. If this is absent,
+ the system supplies its own rules for DST, and these can
+ differ from year to year; typically US DST rules are used.
+ time
+ takes the form 'hh:[mm[:ss]]' and defaults to 02:00.
+ This is the same format as the offset, except that a
+ leading '+' or '-' is not allowed.
+ date
+ takes one of the following forms:
+ Jn (1<=n<=365)
+ origin-1 day number not counting February 29
+ n (0<=n<=365)
+ origin-0 day number counting February 29 if present
+ Mm.n.d (0[Sunday]<=d<=6[Saturday], 1<=n<=5, 1<=m<=12)
+ for the dth day of week n of month m of the year,
+ where week 1 is the first week in which day d appears,
+ and '5' stands for the last week in which day d appears
+ (which may be either the 4th or 5th week).
+ Typically, this is the only useful form;
+ the n and Jn forms are rarely used.
+
+ Here is an example POSIX TZ string, for US Pacific time using rules
+ appropriate from 1987 through 2006:
+
+ TZ='PST8PDT,M4.1.0/02:00,M10.5.0/02:00'
+
+ This POSIX TZ string is hard to remember, and mishandles time stamps
+ before 1987 and after 2006. With this package you can use this
+ instead:
+
+ TZ='America/Los_Angeles'
+
+* POSIX does not define the exact meaning of TZ values like "EST5EDT".
+ Typically the current US DST rules are used to interpret such values,
+ but this means that the US DST rules are compiled into each program
+ that does time conversion. This means that when US time conversion
+ rules change (as in the United States in 1987), all programs that
+ do time conversion must be recompiled to ensure proper results.
+
+* In POSIX, there's no tamper-proof way for a process to learn the
+ system's best idea of local wall clock. (This is important for
+ applications that an administrator wants used only at certain times -
+ without regard to whether the user has fiddled the "TZ" environment
+ variable. While an administrator can "do everything in UTC" to get
+ around the problem, doing so is inconvenient and precludes handling
+ daylight saving time shifts - as might be required to limit phone
+ calls to off-peak hours.)
+
+* POSIX requires that systems ignore leap seconds.
+
+* The tz code attempts to support all the time_t implementations
+ allowed by POSIX. The time_t type represents a nonnegative count of
+ seconds since 1970-01-01 00:00:00 UTC, ignoring leap seconds.
+ In practice, time_t is usually a signed 64- or 32-bit integer; 32-bit
+ signed time_t values stop working after 2038-01-19 03:14:07 UTC, so
+ new implementations these days typically use a signed 64-bit integer.
+ Unsigned 32-bit integers are used on one or two platforms,
+ and 36-bit and 40-bit integers are also used occasionally.
+ Although earlier POSIX versions allowed time_t to be a
+ floating-point type, this was not supported by any practical
+ systems, and POSIX.1-2013 and the tz code both require time_t
+ to be an integer type.
+
+These are the extensions that have been made to the POSIX functions:
+
+* The "TZ" environment variable is used in generating the name of a file
+ from which time zone information is read (or is interpreted a la
+ POSIX); "TZ" is no longer constrained to be a three-letter time zone
+ name followed by a number of hours and an optional three-letter
+ daylight time zone name. The daylight saving time rules to be used
+ for a particular time zone are encoded in the time zone file;
+ the format of the file allows U.S., Australian, and other rules to be
+ encoded, and allows for situations where more than two time zone
+ abbreviations are used.
+
+ It was recognized that allowing the "TZ" environment variable to
+ take on values such as "America/New_York" might cause "old" programs
+ (that expect "TZ" to have a certain form) to operate incorrectly;
+ consideration was given to using some other environment variable
+ (for example, "TIMEZONE") to hold the string used to generate the
+ time zone information file name. In the end, however, it was decided
+ to continue using "TZ": it is widely used for time zone purposes;
+ separately maintaining both "TZ" and "TIMEZONE" seemed a nuisance;
+ and systems where "new" forms of "TZ" might cause problems can simply
+ use TZ values such as "EST5EDT" which can be used both by
+ "new" programs (a la POSIX) and "old" programs (as zone names and
+ offsets).
+
+* To handle places where more than two time zone abbreviations are used,
+ the functions "localtime" and "gmtime" set tzname[tmp->tm_isdst]
+ (where "tmp" is the value the function returns) to the time zone
+ abbreviation to be used. This differs from POSIX, where the elements
+ of tzname are only changed as a result of calls to tzset.
+
+* Since the "TZ" environment variable can now be used to control time
+ conversion, the "daylight" and "timezone" variables are no longer
+ needed. (These variables are defined and set by "tzset"; however, their
+ values will not be used by "localtime.")
+
+* The "localtime" function has been set up to deliver correct results
+ for near-minimum or near-maximum time_t values. (A comment in the
+ source code tells how to get compatibly wrong results).
+
+* A function "tzsetwall" has been added to arrange for the system's
+ best approximation to local wall clock time to be delivered by
+ subsequent calls to "localtime." Source code for portable
+ applications that "must" run on local wall clock time should call
+ "tzsetwall();" if such code is moved to "old" systems that don't
+ provide tzsetwall, you won't be able to generate an executable program.
+ (These time zone functions also arrange for local wall clock time to be
+ used if tzset is called - directly or indirectly - and there's no "TZ"
+ environment variable; portable applications should not, however, rely
+ on this behavior since it's not the way SVR2 systems behave.)
+
+* Negative time_t values are supported, on systems where time_t is signed.
+
+* These functions can account for leap seconds, thanks to Bradley White.
+
+Points of interest to folks with other systems:
+
+* This package is already part of many POSIX-compliant hosts,
+ including BSD, HP, Linux, Network Appliance, SCO, SGI, and Sun.
+ On such hosts, the primary use of this package
+ is to update obsolete time zone rule tables.
+ To do this, you may need to compile the time zone compiler
+ 'zic' supplied with this package instead of using the system 'zic',
+ since the format of zic's input changed slightly in late 1994,
+ and many vendors still do not support the new input format.
+
+* The UNIX Version 7 "timezone" function is not present in this package;
+ it's impossible to reliably map timezone's arguments (a "minutes west
+ of GMT" value and a "daylight saving time in effect" flag) to a
+ time zone abbreviation, and we refuse to guess.
+ Programs that in the past used the timezone function may now examine
+ tzname[localtime(&clock)->tm_isdst] to learn the correct time
+ zone abbreviation to use. Alternatively, use
+ localtime(&clock)->tm_zone if this has been enabled.
+
+* The 4.2BSD gettimeofday function is not used in this package.
+ This formerly let users obtain the current UTC offset and DST flag,
+ but this functionality was removed in later versions of BSD.
+
+* In SVR2, time conversion fails for near-minimum or near-maximum
+ time_t values when doing conversions for places that don't use UT.
+ This package takes care to do these conversions correctly.
+
+The functions that are conditionally compiled if STD_INSPIRED is defined
+should, at this point, be looked on primarily as food for thought. They are
+not in any sense "standard compatible" - some are not, in fact, specified in
+*any* standard. They do, however, represent responses of various authors to
+standardization proposals.
+
+Other time conversion proposals, in particular the one developed by folks at
+Hewlett Packard, offer a wider selection of functions that provide capabilities
+beyond those provided here. The absence of such functions from this package
+is not meant to discourage the development, standardization, or use of such
+functions. Rather, their absence reflects the decision to make this package
+contain valid extensions to POSIX, to ensure its broad acceptability. If
+more powerful time conversion functions can be standardized, so much the
+better.
+
+
+----- Calendrical issues -----
+
+Calendrical issues are a bit out of scope for a time zone database,
+but they indicate the sort of problems that we would run into if we
+extended the time zone database further into the past. An excellent
+resource in this area is Nachum Dershowitz and Edward M. Reingold,
+Calendrical Calculations: Third Edition, Cambridge University Press (2008)
+<http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/>.
+Other information and sources are given below. They sometimes disagree.
+
+
+France
+
+Gregorian calendar adopted 1582-12-20.
+French Revolutionary calendar used 1793-11-24 through 1805-12-31,
+and (in Paris only) 1871-05-06 through 1871-05-23.
+
+
+Russia
+
+From Chris Carrier (1996-12-02):
+On 1929-10-01 the Soviet Union instituted an "Eternal Calendar"
+with 30-day months plus 5 holidays, with a 5-day week.
+On 1931-12-01 it changed to a 6-day week; in 1934 it reverted to the
+Gregorian calendar while retaining the 6-day week; on 1940-06-27 it
+reverted to the 7-day week. With the 6-day week the usual days
+off were the 6th, 12th, 18th, 24th and 30th of the month.
+(Source: Evitiar Zerubavel, _The Seven Day Circle_)
+
+
+Mark Brader reported a similar story in "The Book of Calendars", edited
+by Frank Parise (1982, Facts on File, ISBN 0-8719-6467-8), page 377. But:
+
+From: Petteri Sulonen (via Usenet)
+Date: 14 Jan 1999 00:00:00 GMT
+...
+
+If your source is correct, how come documents between 1929 and 1940 were
+still dated using the conventional, Gregorian calendar?
+
+I can post a scan of a document dated December 1, 1934, signed by
+Yenukidze, the secretary, on behalf of Kalinin, the President of the
+Executive Committee of the Supreme Soviet, if you like.
+
+
+
+Sweden (and Finland)
+
+From: Mark Brader
+Subject: Re: Gregorian reform - a part of locale?
+<news:1996Jul6.012937.29190 at sq.com>
+Date: 1996-07-06
+
+In 1700, Denmark made the transition from Julian to Gregorian. Sweden
+decided to *start* a transition in 1700 as well, but rather than have one of
+those unsightly calendar gaps :-), they simply decreed that the next leap
+year after 1696 would be in 1744 - putting the whole country on a calendar
+different from both Julian and Gregorian for a period of 40 years.
+
+However, in 1704 something went wrong and the plan was not carried through;
+they did, after all, have a leap year that year. And one in 1708. In 1712
+they gave it up and went back to Julian, putting 30 days in February that
+year!...
+
+Then in 1753, Sweden made the transition to Gregorian in the usual manner,
+getting there only 13 years behind the original schedule.
+
+(A previous posting of this story was challenged, and Swedish readers
+produced the following references to support it: "Tideräkning och historia"
+by Natanael Beckman (1924) and "Tid, en bok om tideräkning och
+kalenderväsen" by Lars-Olof Lodén (1968).
+
+
+Grotefend's data
+
+From: "Michael Palmer" [with one obvious typo fixed]
+Subject: Re: Gregorian Calendar (was Re: Another FHC related question
+Newsgroups: soc.genealogy.german
+Date: Tue, 9 Feb 1999 02:32:48 -800
+...
+
+The following is a(n incomplete) listing, arranged chronologically, of
+European states, with the date they converted from the Julian to the
+Gregorian calendar:
+
+04/15 Oct 1582 - Italy (with exceptions), Spain, Portugal, Poland (Roman
+ Catholics and Danzig only)
+09/20 Dec 1582 - France, Lorraine
+
+21 Dec 1582/
+ 01 Jan 1583 - Holland, Brabant, Flanders, Hennegau
+10/21 Feb 1583 - bishopric of Liege (Lüttich)
+13/24 Feb 1583 - bishopric of Augsburg
+04/15 Oct 1583 - electorate of Trier
+05/16 Oct 1583 - Bavaria, bishoprics of Freising, Eichstedt, Regensburg,
+ Salzburg, Brixen
+13/24 Oct 1583 - Austrian Oberelsaß and Breisgau
+20/31 Oct 1583 - bishopric of Basel
+02/13 Nov 1583 - duchy of Jülich-Berg
+02/13 Nov 1583 - electorate and city of Köln
+04/15 Nov 1583 - bishopric of Würzburg
+11/22 Nov 1583 - electorate of Mainz
+16/27 Nov 1583 - bishopric of Strassburg and the margraviate of Baden
+17/28 Nov 1583 - bishopric of Münster and duchy of Cleve
+14/25 Dec 1583 - Steiermark
+
+06/17 Jan 1584 - Austria and Bohemia
+11/22 Jan 1584 - Lucerne, Uri, Schwyz, Zug, Freiburg, Solothurn
+12/23 Jan 1584 - Silesia and the Lausitz
+22 Jan/
+ 02 Feb 1584 - Hungary (legally on 21 Oct 1587)
+ Jun 1584 - Unterwalden
+01/12 Jul 1584 - duchy of Westfalen
+
+16/27 Jun 1585 - bishopric of Paderborn
+
+14/25 Dec 1590 - Transylvania
+
+22 Aug/
+ 02 Sep 1612 - duchy of Prussia
+
+13/24 Dec 1614 - Pfalz-Neuburg
+
+ 1617 - duchy of Kurland (reverted to the Julian calendar in
+ 1796)
+
+ 1624 - bishopric of Osnabrück
+
+ 1630 - bishopric of Minden
+
+15/26 Mar 1631 - bishopric of Hildesheim
+
+ 1655 - Kanton Wallis
+
+05/16 Feb 1682 - city of Strassburg
+
+18 Feb/
+ 01 Mar 1700 - Protestant Germany (including Swedish possessions in
+ Germany), Denmark, Norway
+30 Jun/
+ 12 Jul 1700 - Gelderland, Zutphen
+10 Nov/
+ 12 Dec 1700 - Utrecht, Overijssel
+
+31 Dec 1700/
+ 12 Jan 1701 - Friesland, Groningen, Zürich, Bern, Basel, Geneva,
+ Turgau, and Schaffhausen
+
+ 1724 - Glarus, Appenzell, and the city of St. Gallen
+
+01 Jan 1750 - Pisa and Florence
+
+02/14 Sep 1752 - Great Britain
+
+17 Feb/
+ 01 Mar 1753 - Sweden
+
+1760-1812 - Graubünden
+
+The Russian empire (including Finland and the Baltic states) did not
+convert to the Gregorian calendar until the Soviet revolution of 1917.
+
+Source: H. Grotefend, _Taschenbuch der Zeitrechnung des deutschen
+Mittelalters und der Neuzeit_, herausgegeben von Dr. O. Grotefend
+(Hannover: Hahnsche Buchhandlung, 1941), pp. 26-28.
+
+
+----- Time and time zones on Mars -----
+
+Some people's work schedules use Mars time. Jet Propulsion Laboratory
+(JPL) coordinators have kept Mars time on and off at least since 1997
+for the Mars Pathfinder mission. Some of their family members have
+also adapted to Mars time. Dozens of special Mars watches were built
+for JPL workers who kept Mars time during the Mars Exploration
+Rovers mission (2004). These timepieces look like normal Seikos and
+Citizens but use Mars seconds rather than terrestrial seconds.
+
+A Mars solar day is called a "sol" and has a mean period equal to
+about 24 hours 39 minutes 35.244 seconds in terrestrial time. It is
+divided into a conventional 24-hour clock, so each Mars second equals
+about 1.02749125 terrestrial seconds.
+
+The prime meridian of Mars goes through the center of the crater
+Airy-0, named in honor of the British astronomer who built the
+Greenwich telescope that defines Earth's prime meridian. Mean solar
+time on the Mars prime meridian is called Mars Coordinated Time (MTC).
+
+Each landed mission on Mars has adopted a different reference for
+solar time keeping, so there is no real standard for Mars time zones.
+For example, the Mars Exploration Rover project (2004) defined two
+time zones "Local Solar Time A" and "Local Solar Time B" for its two
+missions, each zone designed so that its time equals local true solar
+time at approximately the middle of the nominal mission. Such a "time
+zone" is not particularly suited for any application other than the
+mission itself.
+
+Many calendars have been proposed for Mars, but none have achieved
+wide acceptance. Astronomers often use Mars Sol Date (MSD) which is a
+sequential count of Mars solar days elapsed since about 1873-12-29
+12:00 GMT.
+
+The tz database does not currently support Mars time, but it is
+documented here in the hopes that support will be added eventually.
+
+Sources:
+
+Michael Allison and Robert Schmunk,
+"Technical Notes on Mars Solar Time as Adopted by the Mars24 Sunclock"
+<http://www.giss.nasa.gov/tools/mars24/help/notes.html> (2012-08-08).
+
+Jia-Rui Chong, "Workdays Fit for a Martian", Los Angeles Times
+<http://articles.latimes.com/2004/jan/14/science/sci-marstime14>
+(2004-01-14), pp A1, A20-A21.
+
+Tom Chmielewski, "Jet Lag Is Worse on Mars", The Atlantic (2015-02-26)
+<http://www.theatlantic.com/technology/archive/2015/02/jet-lag-is-worse-on-mars/386033/>
+
+-----
+
+This file is in the public domain, so clarified as of 2009-05-17 by
+Arthur David Olson.
+
+-----
+Local Variables:
+coding: utf-8
+End:
Deleted: vendor/tzcode/2016f/asctime.c
===================================================================
--- vendor/tzcode/dist/asctime.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/asctime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,132 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** Avoid the temptation to punt entirely to strftime;
-** the output of strftime is supposed to be locale specific
-** whereas the output of asctime is supposed to be constant.
-*/
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-#include "tzfile.h"
-
-/*
-** Some systems only handle "%.2d"; others only handle "%02d";
-** "%02.2d" makes (most) everybody happy.
-** At least some versions of gcc warn about the %02.2d;
-** we conditionalize below to avoid the warning.
-*/
-/*
-** All years associated with 32-bit time_t values are exactly four digits long;
-** some years associated with 64-bit time_t values are not.
-** Vintage programs are coded for years that are always four digits long
-** and may assume that the newline always lands in the same place.
-** For years that are less than four digits, we pad the output with
-** leading zeroes to get the newline in the traditional place.
-** The -4 ensures that we get four characters of output even if
-** we call a strftime variant that produces fewer characters for some years.
-** The ISO C 1999 and POSIX 1003.1-2004 standards prohibit padding the year,
-** but many implementations pad anyway; most likely the standards are buggy.
-*/
-#ifdef __GNUC__
-#define ASCTIME_FMT "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %-4s\n"
-#else /* !defined __GNUC__ */
-#define ASCTIME_FMT "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %-4s\n"
-#endif /* !defined __GNUC__ */
-/*
-** For years that are more than four digits we put extra spaces before the year
-** so that code trying to overwrite the newline won't end up overwriting
-** a digit within a year and truncating the year (operating on the assumption
-** that no output is better than wrong output).
-*/
-#ifdef __GNUC__
-#define ASCTIME_FMT_B "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %s\n"
-#else /* !defined __GNUC__ */
-#define ASCTIME_FMT_B "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %s\n"
-#endif /* !defined __GNUC__ */
-
-#define STD_ASCTIME_BUF_SIZE 26
-/*
-** Big enough for something such as
-** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
-** (two three-character abbreviations, five strings denoting integers,
-** seven explicit spaces, two explicit colons, a newline,
-** and a trailing ASCII nul).
-** The values above are for systems where an int is 32 bits and are provided
-** as an example; the define below calculates the maximum for the system at
-** hand.
-*/
-#define MAX_ASCTIME_BUF_SIZE (2*3+5*INT_STRLEN_MAXIMUM(int)+7+2+1+1)
-
-static char buf_asctime[MAX_ASCTIME_BUF_SIZE];
-
-/*
-** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
-*/
-
-char *
-asctime_r(register const struct tm *timeptr, char *buf)
-{
- static const char wday_name[][3] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
- };
- static const char mon_name[][3] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- register const char * wn;
- register const char * mn;
- char year[INT_STRLEN_MAXIMUM(int) + 2];
- char result[MAX_ASCTIME_BUF_SIZE];
-
- if (timeptr == NULL) {
- errno = EINVAL;
- return strcpy(buf, "??? ??? ?? ??:??:?? ????\n");
- }
- if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
- wn = "???";
- else wn = wday_name[timeptr->tm_wday];
- if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
- mn = "???";
- else mn = mon_name[timeptr->tm_mon];
- /*
- ** Use strftime's %Y to generate the year, to avoid overflow problems
- ** when computing timeptr->tm_year + TM_YEAR_BASE.
- ** Assume that strftime is unaffected by other out-of-range members
- ** (e.g., timeptr->tm_mday) when processing "%Y".
- */
- (void) strftime(year, sizeof year, "%Y", timeptr);
- /*
- ** We avoid using snprintf since it's not available on all systems.
- */
- (void) sprintf(result,
- ((strlen(year) <= 4) ? ASCTIME_FMT : ASCTIME_FMT_B),
- wn, mn,
- timeptr->tm_mday, timeptr->tm_hour,
- timeptr->tm_min, timeptr->tm_sec,
- year);
- if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime)
- return strcpy(buf, result);
- else {
-#ifdef EOVERFLOW
- errno = EOVERFLOW;
-#else /* !defined EOVERFLOW */
- errno = EINVAL;
-#endif /* !defined EOVERFLOW */
- return NULL;
- }
-}
-
-/*
-** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
-*/
-
-char *
-asctime(register const struct tm *timeptr)
-{
- return asctime_r(timeptr, buf_asctime);
-}
Copied: vendor/tzcode/2016f/asctime.c (from rev 7736, vendor/tzcode/dist/asctime.c)
===================================================================
--- vendor/tzcode/2016f/asctime.c (rev 0)
+++ vendor/tzcode/2016f/asctime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,128 @@
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** Avoid the temptation to punt entirely to strftime;
+** the output of strftime is supposed to be locale specific
+** whereas the output of asctime is supposed to be constant.
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+#include "tzfile.h"
+
+/*
+** Some systems only handle "%.2d"; others only handle "%02d";
+** "%02.2d" makes (most) everybody happy.
+** At least some versions of gcc warn about the %02.2d;
+** we conditionalize below to avoid the warning.
+*/
+/*
+** All years associated with 32-bit time_t values are exactly four digits long;
+** some years associated with 64-bit time_t values are not.
+** Vintage programs are coded for years that are always four digits long
+** and may assume that the newline always lands in the same place.
+** For years that are less than four digits, we pad the output with
+** leading zeroes to get the newline in the traditional place.
+** The -4 ensures that we get four characters of output even if
+** we call a strftime variant that produces fewer characters for some years.
+** The ISO C 1999 and POSIX 1003.1-2004 standards prohibit padding the year,
+** but many implementations pad anyway; most likely the standards are buggy.
+*/
+#ifdef __GNUC__
+#define ASCTIME_FMT "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %-4s\n"
+#else /* !defined __GNUC__ */
+#define ASCTIME_FMT "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %-4s\n"
+#endif /* !defined __GNUC__ */
+/*
+** For years that are more than four digits we put extra spaces before the year
+** so that code trying to overwrite the newline won't end up overwriting
+** a digit within a year and truncating the year (operating on the assumption
+** that no output is better than wrong output).
+*/
+#ifdef __GNUC__
+#define ASCTIME_FMT_B "%.3s %.3s%3d %2.2d:%2.2d:%2.2d %s\n"
+#else /* !defined __GNUC__ */
+#define ASCTIME_FMT_B "%.3s %.3s%3d %02.2d:%02.2d:%02.2d %s\n"
+#endif /* !defined __GNUC__ */
+
+#define STD_ASCTIME_BUF_SIZE 26
+/*
+** Big enough for something such as
+** ??? ???-2147483648 -2147483648:-2147483648:-2147483648 -2147483648\n
+** (two three-character abbreviations, five strings denoting integers,
+** seven explicit spaces, two explicit colons, a newline,
+** and a trailing NUL byte).
+** The values above are for systems where an int is 32 bits and are provided
+** as an example; the define below calculates the maximum for the system at
+** hand.
+*/
+#define MAX_ASCTIME_BUF_SIZE (2*3+5*INT_STRLEN_MAXIMUM(int)+7+2+1+1)
+
+static char buf_asctime[MAX_ASCTIME_BUF_SIZE];
+
+/*
+** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
+*/
+
+char *
+asctime_r(register const struct tm *timeptr, char *buf)
+{
+ static const char wday_name[][3] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+ };
+ static const char mon_name[][3] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ register const char * wn;
+ register const char * mn;
+ char year[INT_STRLEN_MAXIMUM(int) + 2];
+ char result[MAX_ASCTIME_BUF_SIZE];
+
+ if (timeptr == NULL) {
+ errno = EINVAL;
+ return strcpy(buf, "??? ??? ?? ??:??:?? ????\n");
+ }
+ if (timeptr->tm_wday < 0 || timeptr->tm_wday >= DAYSPERWEEK)
+ wn = "???";
+ else wn = wday_name[timeptr->tm_wday];
+ if (timeptr->tm_mon < 0 || timeptr->tm_mon >= MONSPERYEAR)
+ mn = "???";
+ else mn = mon_name[timeptr->tm_mon];
+ /*
+ ** Use strftime's %Y to generate the year, to avoid overflow problems
+ ** when computing timeptr->tm_year + TM_YEAR_BASE.
+ ** Assume that strftime is unaffected by other out-of-range members
+ ** (e.g., timeptr->tm_mday) when processing "%Y".
+ */
+ strftime(year, sizeof year, "%Y", timeptr);
+ /*
+ ** We avoid using snprintf since it's not available on all systems.
+ */
+ sprintf(result,
+ ((strlen(year) <= 4) ? ASCTIME_FMT : ASCTIME_FMT_B),
+ wn, mn,
+ timeptr->tm_mday, timeptr->tm_hour,
+ timeptr->tm_min, timeptr->tm_sec,
+ year);
+ if (strlen(result) < STD_ASCTIME_BUF_SIZE || buf == buf_asctime)
+ return strcpy(buf, result);
+ else {
+ errno = EOVERFLOW;
+ return NULL;
+ }
+}
+
+/*
+** A la ISO/IEC 9945-1, ANSI/IEEE Std 1003.1, 2004 Edition.
+*/
+
+char *
+asctime(register const struct tm *timeptr)
+{
+ return asctime_r(timeptr, buf_asctime);
+}
Deleted: vendor/tzcode/2016f/date.1
===================================================================
--- vendor/tzcode/dist/date.1 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/date.1 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,176 +0,0 @@
-.TH DATE 1
-.SH NAME
-date \- show and set date and time
-.SH SYNOPSIS
-.if n .nh
-.if n .na
-.B date
-[
-.B \-u
-] [
-.B \-c
-] [
-.B \-n
-] [
-.B \-d
-dsttype
-] [
-.B \-t
-minutes-west
-] [
-\fB\-a \fR[\fB+\fR|\fB-]\fIsss\fB.\fIfff\fR
-] [
-.BI + format
-] [
-\fR[\fIyyyy\fR]\fImmddhhmm\fR[\fIyy\fR][\fB.\fIss\fR]
-]
-.SH DESCRIPTION
-.I Date
-without arguments writes the date and time to the standard output in
-the form
-.ce 1
-Wed Mar 8 14:54:40 EST 1989
-.br
-with
-.B EST
-replaced by the local time zone's abbreviation
-(or by the abbreviation for the time zone specified in the
-.B TZ
-environment variable if set).
-The exact output format depends on the locale.
-.PP
-If a command-line argument starts with a plus sign
-.RB (` + '),
-the rest of the argument is used as a
-.I format
-that controls what appears in the output.
-In the format, when a percent sign
-.RB (` % ')
-appears,
-it and the character after it are not output,
-but rather identify part of the date or time
-to be output in a particular way
-(or identify a special character to output):
-.nf
-.sp
-.if t .in +.5i
-.if n .in +2
-.ta \w'%M\0\0'u +\w'Wed Mar 8 14:54:40 EST 1989\0\0'u
- Sample output Explanation
-%a Wed Abbreviated weekday name*
-%A Wednesday Full weekday name*
-%b Mar Abbreviated month name*
-%B March Full month name*
-%c Wed Mar 08 14:54:40 1989 Date and time*
-%C 19 Century
-%d 08 Day of month (always two digits)
-%D 03/08/89 Month/day/year (eight characters)
-%e 8 Day of month (leading zero blanked)
-%h Mar Abbreviated month name*
-%H 14 24-hour-clock hour (two digits)
-%I 02 12-hour-clock hour (two digits)
-%j 067 Julian day number (three digits)
-%k 2 12-hour-clock hour (leading zero blanked)
-%l 14 24-hour-clock hour (leading zero blanked)
-%m 03 Month number (two digits)
-%M 54 Minute (two digits)
-%n \\n newline character
-%p PM AM/PM designation
-%r 02:54:40 PM Hour:minute:second AM/PM designation
-%R 14:54 Hour:minute
-%S 40 Second (two digits)
-%t \\t tab character
-%T 14:54:40 Hour:minute:second
-%U 10 Sunday-based week number (two digits)
-%w 3 Day number (one digit, Sunday is 0)
-%W 10 Monday-based week number (two digits)
-%x 03/08/89 Date*
-%X 14:54:40 Time*
-%y 89 Last two digits of year
-%Y 1989 Year in full
-%Z EST Time zone abbreviation
-%+ Wed Mar 8 14:54:40 EST 1989 Default output format*
-.if t .in -.5i
-.if n .in -2
-* The exact output depends on the locale.
-.sp
-.fi
-If a character other than one of those shown above appears after
-a percent sign in the format,
-that following character is output.
-All other characters in the format are copied unchanged to the output;
-a newline character is always added at the end of the output.
-.PP
-In Sunday-based week numbering,
-the first Sunday of the year begins week 1;
-days preceding it are part of ``week 0.''
-In Monday-based week numbering,
-the first Monday of the year begins week 1.
-.PP
-To set the date, use a command line argument with one of the following forms:
-.nf
-.if t .in +.5i
-.if n .in +2
-.ta \w'198903081454\0'u
-1454 24-hour-clock hours (first two digits) and minutes
-081454 Month day (first two digits), hours, and minutes
-03081454 Month (two digits, January is 01), month day, hours, minutes
-8903081454 Year, month, month day, hours, minutes
-0308145489 Month, month day, hours, minutes, year
- (on System V-compatible systems)
-030814541989 Month, month day, hours, minutes, four-digit year
-198903081454 Four-digit year, month, month day, hours, minutes
-.if t .in -.5i
-.if n .in -2
-.fi
-If the century, year, month, or month day is not given,
-the current value is used.
-Any of the above forms may be followed by a period and two digits that give
-the seconds part of the new time; if no seconds are given, zero is assumed.
-.PP
-These options are available:
-.TP
-.BR \-u " or " \-c
-Use UTC when setting and showing the date and time.
-.TP
-.B \-n
-Do not notify other networked systems of the time change.
-.TP
-.BI "\-d " dsttype
-Set the kernel-stored Daylight Saving Time type to the given value.
-(The kernel-stored DST type is used mostly by ``old'' binaries.)
-.TP
-.BI "\-t " minutes-west
-Set the kernel-stored ``minutes west of UTC'' value to the one given on the
-command line.
-(The kernel-stored DST type is used mostly by ``old'' binaries.)
-.TP
-.BI "\-a " adjustment
-Change the time forward (or backward) by the number of seconds
-(and fractions thereof) specified in the
-.I adjustment\^
-argument.
-Either the seconds part or the fractions part of the argument (but not both)
-may be omitted.
-On BSD-based systems,
-the adjustment is made by changing the rate at which time advances;
-on System-V-based systems, the adjustment is made by changing the time.
-.SH FILES
-.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
-/usr/lib/locale/\f2L\fP/LC_TIME description of time locale \f2L\fP
-.br
-/usr/local/etc/zoneinfo time zone information directory
-.br
-/usr/local/etc/zoneinfo/localtime local time zone file
-.br
-/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
-.br
-/usr/local/etc/zoneinfo/GMT for UTC leap seconds
-.sp
-If
-.B /usr/local/etc/zoneinfo/GMT
-is absent,
-UTC leap seconds are loaded from
-.BR /usr/local/etc/zoneinfo/posixrules .
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/date.1 (from rev 7736, vendor/tzcode/dist/date.1)
===================================================================
--- vendor/tzcode/2016f/date.1 (rev 0)
+++ vendor/tzcode/2016f/date.1 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,164 @@
+.TH DATE 1
+.SH NAME
+date \- show and set date and time
+.SH SYNOPSIS
+.if n .nh
+.if n .na
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B date
+[
+.B \*-u
+] [
+.B \*-c
+] [
+.B \*-r
+.I seconds
+] [
+.BI + format
+] [
+\fR[\fIyyyy\fR]\fImmddhhmm\fR[\fIyy\fR][\fB.\fIss\fR]
+]
+.SH DESCRIPTION
+.ie '\(lq'' .ds lq \&"\"
+.el .ds lq \(lq\"
+.ie '\(rq'' .ds rq \&"\"
+.el .ds rq \(rq\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+.I Date
+without arguments writes the date and time to the standard output in
+the form
+.ce 1
+Wed Mar 8 14:54:40 EST 1989
+.br
+with
+.B EST
+replaced by the local time zone's abbreviation
+(or by the abbreviation for the time zone specified in the
+.B TZ
+environment variable if set).
+The exact output format depends on the locale.
+.PP
+If a command-line argument starts with a plus sign (\c
+.q "\fB+\fP" ),
+the rest of the argument is used as a
+.I format
+that controls what appears in the output.
+In the format, when a percent sign (\c
+.q "\fB%\fP"
+appears,
+it and the character after it are not output,
+but rather identify part of the date or time
+to be output in a particular way
+(or identify a special character to output):
+.nf
+.sp
+.if t .in +.5i
+.if n .in +2
+.ta \w'%M\0\0'u +\w'Wed Mar 8 14:54:40 EST 1989\0\0'u
+ Sample output Explanation
+%a Wed Abbreviated weekday name*
+%A Wednesday Full weekday name*
+%b Mar Abbreviated month name*
+%B March Full month name*
+%c Wed Mar 08 14:54:40 1989 Date and time*
+%C 19 Century
+%d 08 Day of month (always two digits)
+%D 03/08/89 Month/day/year (eight characters)
+%e 8 Day of month (leading zero blanked)
+%h Mar Abbreviated month name*
+%H 14 24-hour-clock hour (two digits)
+%I 02 12-hour-clock hour (two digits)
+%j 067 Julian day number (three digits)
+%k 2 12-hour-clock hour (leading zero blanked)
+%l 14 24-hour-clock hour (leading zero blanked)
+%m 03 Month number (two digits)
+%M 54 Minute (two digits)
+%n \\n newline character
+%p PM AM/PM designation
+%r 02:54:40 PM Hour:minute:second AM/PM designation
+%R 14:54 Hour:minute
+%S 40 Second (two digits)
+%t \\t tab character
+%T 14:54:40 Hour:minute:second
+%U 10 Sunday-based week number (two digits)
+%w 3 Day number (one digit, Sunday is 0)
+%W 10 Monday-based week number (two digits)
+%x 03/08/89 Date*
+%X 14:54:40 Time*
+%y 89 Last two digits of year
+%Y 1989 Year in full
+%Z EST Time zone abbreviation
+%+ Wed Mar 8 14:54:40 EST 1989 Default output format*
+.if t .in -.5i
+.if n .in -2
+* The exact output depends on the locale.
+.sp
+.fi
+If a character other than one of those shown above appears after
+a percent sign in the format,
+that following character is output.
+All other characters in the format are copied unchanged to the output;
+a newline character is always added at the end of the output.
+.PP
+In Sunday-based week numbering,
+the first Sunday of the year begins week 1;
+days preceding it are part of
+.q "week 0" .
+In Monday-based week numbering,
+the first Monday of the year begins week 1.
+.PP
+To set the date, use a command line argument with one of the following forms:
+.nf
+.if t .in +.5i
+.if n .in +2
+.ta \w'198903081454\0'u
+1454 24-hour-clock hours (first two digits) and minutes
+081454 Month day (first two digits), hours, and minutes
+03081454 Month (two digits, January is 01), month day, hours, minutes
+8903081454 Year, month, month day, hours, minutes
+0308145489 Month, month day, hours, minutes, year
+ (on System V-compatible systems)
+030814541989 Month, month day, hours, minutes, four-digit year
+198903081454 Four-digit year, month, month day, hours, minutes
+.if t .in -.5i
+.if n .in -2
+.fi
+If the century, year, month, or month day is not given,
+the current value is used.
+Any of the above forms may be followed by a period and two digits that give
+the seconds part of the new time; if no seconds are given, zero is assumed.
+.PP
+These options are available:
+.TP
+.BR \*-u " or " \*-c
+Use Universal Time when setting and showing the date and time.
+.TP
+.BI "\*-r " seconds
+Output the date that corresponds to
+.I seconds
+past the epoch of 1970-01-01 00:00:00 UTC, where
+.I seconds
+should be an integer, either decimal, octal (leading 0), or
+hexadecimal (leading 0x), preceded by an optional sign.
+.SH FILES
+.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
+/usr/lib/locale/\f2L\fP/LC_TIME description of time locale \f2L\fP
+.br
+/usr/local/etc/zoneinfo time zone information directory
+.br
+/usr/local/etc/zoneinfo/localtime local time zone file
+.br
+/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+.br
+/usr/local/etc/zoneinfo/GMT for UTC leap seconds
+.sp
+If
+.B /usr/local/etc/zoneinfo/GMT
+is absent,
+UTC leap seconds are loaded from
+.BR /usr/local/etc/zoneinfo/posixrules .
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/date.1.txt
===================================================================
--- vendor/tzcode/dist/date.1.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/date.1.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,121 +0,0 @@
-DATE(1) DATE(1)
-
-NAME
- date - show and set date and time
-
-SYNOPSIS
- date [ -u ] [ -c ] [ -n ] [ -d dsttype ] [ -t minutes-west ] [ -a
- [+|-]sss.fff ] [ +format ] [ [yyyy]mmddhhmm[yy][.ss] ]
-
-DESCRIPTION
- Date without arguments writes the date and time to the standard output
- in the form
- Wed Mar 8 14:54:40 EST 1989
- with EST replaced by the local time zone's abbreviation (or by the
- abbreviation for the time zone specified in the TZ environment variable
- if set). The exact output format depends on the locale.
-
- If a command-line argument starts with a plus sign (`+'), the rest of
- the argument is used as a format that controls what appears in the
- output. In the format, when a percent sign (`%') appears, it and the
- character after it are not output, but rather identify part of the date
- or time to be output in a particular way (or identify a special
- character to output):
-
- Sample output Explanation
- %a Wed Abbreviated weekday name*
- %A Wednesday Full weekday name*
- %b Mar Abbreviated month name*
- %B March Full month name*
- %c Wed Mar 08 14:54:40 1989 Date and time*
- %C 19 Century
- %d 08 Day of month (always two digits)
- %D 03/08/89 Month/day/year (eight characters)
- %e 8 Day of month (leading zero blanked)
- %h Mar Abbreviated month name*
- %H 14 24-hour-clock hour (two digits)
- %I 02 12-hour-clock hour (two digits)
- %j 067 Julian day number (three digits)
- %k 2 12-hour-clock hour (leading zero blanked)
- %l 14 24-hour-clock hour (leading zero blanked)
- %m 03 Month number (two digits)
- %M 54 Minute (two digits)
- %n \n newline character
- %p PM AM/PM designation
- %r 02:54:40 PM Hour:minute:second AM/PM designation
- %R 14:54 Hour:minute
- %S 40 Second (two digits)
- %t \t tab character
- %T 14:54:40 Hour:minute:second
- %U 10 Sunday-based week number (two digits)
- %w 3 Day number (one digit, Sunday is 0)
- %W 10 Monday-based week number (two digits)
- %x 03/08/89 Date*
- %X 14:54:40 Time*
- %y 89 Last two digits of year
- %Y 1989 Year in full
- %Z EST Time zone abbreviation
- %+ Wed Mar 8 14:54:40 EST 1989 Default output format*
- * The exact output depends on the locale.
-
- If a character other than one of those shown above appears after a
- percent sign in the format, that following character is output. All
- other characters in the format are copied unchanged to the output; a
- newline character is always added at the end of the output.
-
- In Sunday-based week numbering, the first Sunday of the year begins
- week 1; days preceding it are part of ``week 0.'' In Monday-based week
- numbering, the first Monday of the year begins week 1.
-
- To set the date, use a command line argument with one of the following
- forms:
- 1454 24-hour-clock hours (first two digits) and minutes
- 081454 Month day (first two digits), hours, and minutes
- 03081454 Month (two digits, January is 01), month day, hours, minutes
- 8903081454 Year, month, month day, hours, minutes
- 0308145489 Month, month day, hours, minutes, year
- (on System V-compatible systems)
- 030814541989 Month, month day, hours, minutes, four-digit year
- 198903081454 Four-digit year, month, month day, hours, minutes
- If the century, year, month, or month day is not given, the current
- value is used. Any of the above forms may be followed by a period and
- two digits that give the seconds part of the new time; if no seconds
- are given, zero is assumed.
-
- These options are available:
-
- -u or -c
- Use UTC when setting and showing the date and time.
-
- -n Do not notify other networked systems of the time change.
-
- -d dsttype
- Set the kernel-stored Daylight Saving Time type to the given
- value. (The kernel-stored DST type is used mostly by ``old''
- binaries.)
-
- -t minutes-west
- Set the kernel-stored ``minutes west of UTC'' value to the one
- given on the command line. (The kernel-stored DST type is used
- mostly by ``old'' binaries.)
-
- -a adjustment
- Change the time forward (or backward) by the number of seconds
- (and fractions thereof) specified in the adjustment argument.
- Either the seconds part or the fractions part of the argument
- (but not both) may be omitted. On BSD-based systems, the
- adjustment is made by changing the rate at which time advances;
- on System-V-based systems, the adjustment is made by changing
- the time.
-
-FILES
- /usr/lib/locale/L/LC_TIME description of time locale L
- /usr/local/etc/zoneinfo time zone information directory
- /usr/local/etc/zoneinfo/localtime local time zone file
- /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
- /usr/local/etc/zoneinfo/GMT for UTC leap seconds
-
- If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
- from /usr/local/etc/zoneinfo/posixrules.
-
- DATE(1)
Copied: vendor/tzcode/2016f/date.1.txt (from rev 7736, vendor/tzcode/dist/date.1.txt)
===================================================================
--- vendor/tzcode/2016f/date.1.txt (rev 0)
+++ vendor/tzcode/2016f/date.1.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,106 @@
+DATE(1) General Commands Manual DATE(1)
+
+NAME
+ date - show and set date and time
+
+SYNOPSIS
+ date [ -u ] [ -c ] [ -r seconds ] [ +format ] [ [yyyy]mmddhhmm[yy][.ss]
+ ]
+
+DESCRIPTION
+ Date without arguments writes the date and time to the standard output
+ in the form
+ Wed Mar 8 14:54:40 EST 1989
+ with EST replaced by the local time zone's abbreviation (or by the
+ abbreviation for the time zone specified in the TZ environment variable
+ if set). The exact output format depends on the locale.
+
+ If a command-line argument starts with a plus sign ("+"), the rest of
+ the argument is used as a format that controls what appears in the
+ output. In the format, when a percent sign ("%" appears, it and the
+ character after it are not output, but rather identify part of the date
+ or time to be output in a particular way (or identify a special
+ character to output):
+
+ Sample output Explanation
+ %a Wed Abbreviated weekday name*
+ %A Wednesday Full weekday name*
+ %b Mar Abbreviated month name*
+ %B March Full month name*
+ %c Wed Mar 08 14:54:40 1989 Date and time*
+ %C 19 Century
+ %d 08 Day of month (always two digits)
+ %D 03/08/89 Month/day/year (eight characters)
+ %e 8 Day of month (leading zero blanked)
+ %h Mar Abbreviated month name*
+ %H 14 24-hour-clock hour (two digits)
+ %I 02 12-hour-clock hour (two digits)
+ %j 067 Julian day number (three digits)
+ %k 2 12-hour-clock hour (leading zero blanked)
+ %l 14 24-hour-clock hour (leading zero blanked)
+ %m 03 Month number (two digits)
+ %M 54 Minute (two digits)
+ %n \n newline character
+ %p PM AM/PM designation
+ %r 02:54:40 PM Hour:minute:second AM/PM designation
+ %R 14:54 Hour:minute
+ %S 40 Second (two digits)
+ %t \t tab character
+ %T 14:54:40 Hour:minute:second
+ %U 10 Sunday-based week number (two digits)
+ %w 3 Day number (one digit, Sunday is 0)
+ %W 10 Monday-based week number (two digits)
+ %x 03/08/89 Date*
+ %X 14:54:40 Time*
+ %y 89 Last two digits of year
+ %Y 1989 Year in full
+ %Z EST Time zone abbreviation
+ %+ Wed Mar 8 14:54:40 EST 1989 Default output format*
+ * The exact output depends on the locale.
+
+ If a character other than one of those shown above appears after a
+ percent sign in the format, that following character is output. All
+ other characters in the format are copied unchanged to the output; a
+ newline character is always added at the end of the output.
+
+ In Sunday-based week numbering, the first Sunday of the year begins
+ week 1; days preceding it are part of "week 0". In Monday-based week
+ numbering, the first Monday of the year begins week 1.
+
+ To set the date, use a command line argument with one of the following
+ forms:
+ 1454 24-hour-clock hours (first two digits) and minutes
+ 081454 Month day (first two digits), hours, and minutes
+ 03081454 Month (two digits, January is 01), month day, hours, minutes
+ 8903081454 Year, month, month day, hours, minutes
+ 0308145489 Month, month day, hours, minutes, year
+ (on System V-compatible systems)
+ 030814541989 Month, month day, hours, minutes, four-digit year
+ 198903081454 Four-digit year, month, month day, hours, minutes
+ If the century, year, month, or month day is not given, the current
+ value is used. Any of the above forms may be followed by a period and
+ two digits that give the seconds part of the new time; if no seconds
+ are given, zero is assumed.
+
+ These options are available:
+
+ -u or -c
+ Use Universal Time when setting and showing the date and time.
+
+ -r seconds
+ Output the date that corresponds to seconds past the epoch of
+ 1970-01-01 00:00:00 UTC, where seconds should be an integer,
+ either decimal, octal (leading 0), or hexadecimal (leading 0x),
+ preceded by an optional sign.
+
+FILES
+ /usr/lib/locale/L/LC_TIME description of time locale L
+ /usr/local/etc/zoneinfo time zone information directory
+ /usr/local/etc/zoneinfo/localtime local time zone file
+ /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+ /usr/local/etc/zoneinfo/GMT for UTC leap seconds
+
+ If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
+ from /usr/local/etc/zoneinfo/posixrules.
+
+ DATE(1)
Deleted: vendor/tzcode/2016f/date.c
===================================================================
--- vendor/tzcode/dist/date.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/date.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,924 +0,0 @@
-/*
- * Copyright (c) 1985, 1987, 1988 The Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANT[A]BILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
-#ifndef lint
-char copyright[] =
-"@(#) Copyright (c) 1985, 1987, 1988 The Regents of the University of California.\n\
- All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-static char sccsid[] = "@(#)date.c 4.23 (Berkeley) 9/20/88";
-#endif /* not lint */
-
-#include "private.h"
-#if HAVE_ADJTIME || HAVE_SETTIMEOFDAY
-#include "sys/time.h" /* for struct timeval, struct timezone */
-#endif /* HAVE_ADJTIME || HAVE_SETTIMEOFDAY */
-#include "locale.h"
-#include "utmp.h" /* for OLD_TIME (or its absence) */
-#if HAVE_UTMPX_H
-#include "utmpx.h"
-#endif
-
-#ifndef OTIME_MSG
-#define OTIME_MSG "old time"
-#endif
-#ifndef NTIME_MSG
-#define NTIME_MSG "new time"
-#endif
-
-/*
-** The two things date knows about time are. . .
-*/
-
-#ifndef TM_YEAR_BASE
-#define TM_YEAR_BASE 1900
-#endif /* !defined TM_YEAR_BASE */
-
-#ifndef SECSPERMIN
-#define SECSPERMIN 60
-#endif /* !defined SECSPERMIN */
-
-extern double atof();
-extern char ** environ;
-extern char * getlogin();
-extern time_t mktime();
-extern char * optarg;
-extern int optind;
-extern char * strchr();
-extern time_t time();
-extern char * tzname[2];
-
-static int retval = EXIT_SUCCESS;
-
-static void checkfinal(const char *, int, time_t, time_t);
-static time_t convert(const char *, int, time_t);
-static void display(const char *);
-static void dogmt(void);
-static void errensure(void);
-static void iffy(time_t, time_t, const char *, const char *);
-int main(int, char**);
-static const char * nondigit(const char *);
-static void oops(const char *);
-static void reset(time_t, int);
-static int sametm(const struct tm *, const struct tm *);
-static void timeout(FILE *, const char *, const struct tm *);
-static void usage(void);
-static void wildinput(const char *, const char *,
- const char *);
-
-int
-main(const int argc, char *argv[])
-{
- register const char * format;
- register const char * value;
- register const char * cp;
- register int ch;
- register int dousg;
- register int aflag = 0;
- register int dflag = 0;
- register int nflag = 0;
- register int tflag = 0;
- register int minuteswest;
- register int dsttime;
- register double adjust;
- time_t now;
- time_t t;
-
- INITIALIZE(dousg);
- INITIALIZE(minuteswest);
- INITIALIZE(dsttime);
- INITIALIZE(adjust);
- INITIALIZE(t);
-#ifdef LC_ALL
- (void) setlocale(LC_ALL, "");
-#endif /* defined(LC_ALL) */
-#if HAVE_GETTEXT
-#ifdef TZ_DOMAINDIR
- (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
-#endif /* defined(TEXTDOMAINDIR) */
- (void) textdomain(TZ_DOMAIN);
-#endif /* HAVE_GETTEXT */
- (void) time(&now);
- format = value = NULL;
- while ((ch = getopt(argc, argv, "ucnd:t:a:")) != EOF && ch != -1) {
- switch (ch) {
- default:
- usage();
- case 'u': /* do it in UTC */
- case 'c':
- dogmt();
- break;
- case 'n': /* don't set network */
- nflag = 1;
- break;
- case 'd': /* daylight saving time */
- if (dflag) {
- (void) fprintf(stderr,
- _("date: error: multiple -d's used"));
- usage();
- }
- dflag = 1;
- cp = optarg;
- dsttime = atoi(cp);
- if (*cp == '\0' || *nondigit(cp) != '\0')
- wildinput(_("-t value"), optarg,
- _("must be a non-negative number"));
- break;
- case 't': /* minutes west of UTC */
- if (tflag) {
- (void) fprintf(stderr,
- _("date: error: multiple -t's used"));
- usage();
- }
- tflag = 1;
- cp = optarg;
- minuteswest = atoi(cp);
- if (*cp == '+' || *cp == '-')
- ++cp;
- if (*cp == '\0' || *nondigit(cp) != '\0')
- wildinput(_("-d value"), optarg,
- _("must be a number"));
- break;
- case 'a': /* adjustment */
- if (aflag) {
- (void) fprintf(stderr,
- _("date: error: multiple -a's used"));
- usage();
- }
- aflag = 1;
- cp = optarg;
- adjust = atof(cp);
- if (*cp == '+' || *cp == '-')
- ++cp;
- if (*cp == '\0' || strcmp(cp, ".") == 0)
- wildinput(_("-a value"), optarg,
- _("must be a number"));
- cp = nondigit(cp);
- if (*cp == '.')
- ++cp;
- if (*nondigit(cp) != '\0')
- wildinput(_("-a value"), optarg,
- _("must be a number"));
- break;
- }
- }
- while (optind < argc) {
- cp = argv[optind++];
- if (*cp == '+')
- if (format == NULL)
- format = cp + 1;
- else {
- (void) fprintf(stderr,
-_("date: error: multiple formats in command line\n"));
- usage();
- }
- else if (value == NULL)
- value = cp;
- else {
- (void) fprintf(stderr,
-_("date: error: multiple values in command line\n"));
- usage();
- }
- }
- if (value != NULL) {
- /*
- ** This order ensures that "reasonable" twelve-digit inputs
- ** (such as 120203042006) won't be misinterpreted
- ** even if time_t's range all the way back to the thirteenth
- ** century. Do not change the order.
- */
- t = convert(value, (dousg = TRUE), now);
- if (t == -1)
- t = convert(value, (dousg = FALSE), now);
- if (t == -1) {
- /*
- ** Out of range values,
- ** or time that falls in a DST transition hole?
- */
- if ((cp = strchr(value, '.')) != NULL) {
- /*
- ** Ensure that the failure of
- ** TZ=America/New_York date 8712312359.60
- ** doesn't get misdiagnosed. (It was
- ** TZ=America/New_York date 8712311859.60
- ** when the leap second was inserted.)
- ** The normal check won't work since
- ** the given time is valid in UTC.
- */
- if (atoi(cp + 1) >= SECSPERMIN)
- wildinput(_("time"), value,
- _("out of range seconds given"));
- }
- dogmt();
- t = convert(value, FALSE, now);
- if (t == -1)
- t = convert(value, TRUE, now);
- wildinput(_("time"), value,
- (t == -1) ?
- _("out of range value given") :
- _("time skipped when clock springs forward"));
- }
- }
- /*
- ** Entire command line has now been checked.
- */
- if (aflag) {
-#if HAVE_ADJTIME
- struct timeval tv;
-
- tv.tv_sec = (int) adjust;
- tv.tv_usec = (int) ((adjust - tv.tv_sec) * 1000000L);
- if (adjtime(&tv, NULL) != 0)
- oops("adjtime");
-#endif /* HAVE_ADJTIME */
-#if !HAVE_ADJTIME
- reset(now + adjust, nflag);
-#endif /* !HAVE_ADJTIME */
- /*
- ** Sun silently ignores everything else; we follow suit.
- */
- exit(retval);
- }
- if (dflag || tflag) {
-#if HAVE_SETTIMEOFDAY == 2
- struct timezone tz;
-
- if (!dflag || !tflag)
- if (gettimeofday(NULL, &tz) != 0)
- oops("gettimeofday");
- if (dflag)
- tz.tz_dsttime = dsttime;
- if (tflag)
- tz.tz_minuteswest = minuteswest;
- if (settimeofday(NULL, &tz) != 0)
- oops("settimeofday");
-#endif /* HAVE_SETTIMEOFDAY == 2 */
-#if HAVE_SETTIMEOFDAY != 2
- (void) fprintf(stderr,
-_("date: warning: kernel doesn't keep -d/-t information, option ignored\n"));
-#endif /* HAVE_SETTIMEOFDAY != 2 */
- }
-
- if (value == NULL)
- display(format);
-
- reset(t, nflag);
-
- checkfinal(value, dousg, t, now);
-
-#ifdef EBUG
- {
- struct tm tm;
-
- tm = *localtime(&t);
- timeout(stdout, "%c\n", &tm);
- exit(retval);
- }
-#endif /* defined EBUG */
-
- display(format);
-
- /* gcc -Wall pacifier */
- for ( ; ; )
- continue;
-}
-
-static void
-dogmt(void)
-{
- static char ** fakeenv;
-
- if (fakeenv == NULL) {
- register int from;
- register int to;
- register int n;
- static char tzegmt0[] = "TZ=GMT0";
-
- for (n = 0; environ[n] != NULL; ++n)
- continue;
- fakeenv = malloc((n + 2) * sizeof *fakeenv);
- if (fakeenv == NULL) {
- (void) perror(_("Memory exhausted"));
- errensure();
- exit(retval);
- }
- to = 0;
- fakeenv[to++] = tzegmt0;
- for (from = 1; environ[from] != NULL; ++from)
- if (strncmp(environ[from], "TZ=", 3) != 0)
- fakeenv[to++] = environ[from];
- fakeenv[to] = NULL;
- environ = fakeenv;
- }
-}
-
-#ifdef OLD_TIME
-
-/*
-** We assume we're on a System-V-based system,
-** should use stime,
-** should write System-V-format utmp entries,
-** and don't have network notification to worry about.
-*/
-
-#include "fcntl.h" /* for O_WRONLY, O_APPEND */
-
-/*ARGSUSED*/
-static void
-reset(const time_t newt, const int nflag)
-{
- register int fid;
- time_t oldt;
- static struct {
- struct utmp before;
- struct utmp after;
- } s;
-#if HAVE_UTMPX_H
- static struct {
- struct utmpx before;
- struct utmpx after;
- } sx;
-#endif
-
- /*
- ** Wouldn't it be great if stime returned the old time?
- */
- (void) time(&oldt);
- if (stime(&newt) != 0)
- oops("stime");
- s.before.ut_type = OLD_TIME;
- s.before.ut_time = oldt;
- (void) strcpy(s.before.ut_line, OTIME_MSG);
- s.after.ut_type = NEW_TIME;
- s.after.ut_time = newt;
- (void) strcpy(s.after.ut_line, NTIME_MSG);
- fid = open(WTMP_FILE, O_WRONLY | O_APPEND);
- if (fid < 0)
- oops(_("log file open"));
- if (write(fid, (char *) &s, sizeof s) != sizeof s)
- oops(_("log file write"));
- if (close(fid) != 0)
- oops(_("log file close"));
-#if !HAVE_UTMPX_H
- pututline(&s.before);
- pututline(&s.after);
-#endif /* !HAVE_UTMPX_H */
-#if HAVE_UTMPX_H
- sx.before.ut_type = OLD_TIME;
- sx.before.ut_tv.tv_sec = oldt;
- (void) strcpy(sx.before.ut_line, OTIME_MSG);
- sx.after.ut_type = NEW_TIME;
- sx.after.ut_tv.tv_sec = newt;
- (void) strcpy(sx.after.ut_line, NTIME_MSG);
-#if !SUPPRESS_WTMPX_FILE_UPDATE
- /* In Solaris 2.5 (and presumably other systems),
- `date' does not update /var/adm/wtmpx.
- This must be a bug. If you'd like to reproduce the bug,
- define SUPPRESS_WTMPX_FILE_UPDATE to be nonzero. */
- fid = open(WTMPX_FILE, O_WRONLY | O_APPEND);
- if (fid < 0)
- oops(_("log file open"));
- if (write(fid, (char *) &sx, sizeof sx) != sizeof sx)
- oops(_("log file write"));
- if (close(fid) != 0)
- oops(_("log file close"));
-#endif /* !SUPPRESS_WTMPX_FILE_UPDATE */
- pututxline(&sx.before);
- pututxline(&sx.after);
-#endif /* HAVE_UTMPX_H */
-}
-
-#endif /* defined OLD_TIME */
-#ifndef OLD_TIME
-
-/*
-** We assume we're on a BSD-based system,
-** should use settimeofday,
-** should write BSD-format utmp entries (using logwtmp),
-** and may get to worry about network notification.
-** The "time name" changes between 4.3-tahoe and 4.4;
-** we include sys/param.h to determine which we should use.
-*/
-
-#ifndef TIME_NAME
-#include "sys/param.h"
-#ifdef BSD4_4
-#define TIME_NAME "date"
-#endif /* defined BSD4_4 */
-#ifndef BSD4_4
-#define TIME_NAME ""
-#endif /* !defined BSD4_4 */
-#endif /* !defined TIME_NAME */
-
-#include "syslog.h"
-#include "sys/socket.h"
-#include "netinet/in.h"
-#include "netdb.h"
-#define TSPTYPES
-#include "protocols/timed.h"
-
-extern int logwtmp();
-
-#if HAVE_SETTIMEOFDAY == 1
-#define settimeofday(t, tz) (settimeofday)(t)
-#endif /* HAVE_SETTIMEOFDAY == 1 */
-
-#ifdef TSP_SETDATE
-static int netsettime(struct timeval);
-#endif
-
-#ifndef TSP_SETDATE
-/*ARGSUSED*/
-#endif /* !defined TSP_SETDATE */
-static void
-reset(const time_t newt, const int nflag)
-{
- register const char * username;
- static struct timeval tv; /* static so tv_usec is 0 */
-
-#ifdef EBUG
- return;
-#endif /* defined EBUG */
- username = getlogin();
- if (username == NULL || *username == '\0') /* single-user or no tty */
- username = "root";
- tv.tv_sec = newt;
-#ifdef TSP_SETDATE
- if (nflag || !netsettime(tv))
-#endif /* defined TSP_SETDATE */
- {
- /*
- ** "old" entry is always written, for compatibility.
- */
- logwtmp("|", TIME_NAME, "");
- if (settimeofday(&tv, NULL) == 0) {
- logwtmp("{", TIME_NAME, ""); /* } */
- syslog(LOG_AUTH | LOG_NOTICE, _("date set by %s"),
- username);
- } else oops("settimeofday");
- }
-}
-
-#endif /* !defined OLD_TIME */
-
-static void
-wildinput(const char *const item, const char *const value,
- const char *const reason)
-{
- (void) fprintf(stderr,
- _("date: error: bad command line %s \"%s\", %s\n"),
- item, value, reason);
- usage();
-}
-
-static void
-errensure(void)
-{
- if (retval == EXIT_SUCCESS)
- retval = EXIT_FAILURE;
-}
-
-static const char *
-nondigit(register const char *cp)
-{
- while (is_digit(*cp))
- ++cp;
- return cp;
-}
-
-static void
-usage(void)
-{
- (void) fprintf(stderr, _("date: usage is date [-u] [-c] [-n] [-d dst] \
-[-t min-west] [-a sss.fff] [[yyyy]mmddhhmm[yyyy][.ss]] [+format]\n"));
- errensure();
- exit(retval);
-}
-
-static void
-oops(const char *const string)
-{
- int e = errno;
-
- (void) fprintf(stderr, _("date: error: "));
- errno = e;
- (void) perror(string);
- errensure();
- display(NULL);
-}
-
-static void
-display(const char *const format)
-{
- struct tm tm;
- time_t now;
-
- (void) time(&now);
- tm = *localtime(&now);
- timeout(stdout, format ? format : "%+", &tm);
- (void) putchar('\n');
- (void) fflush(stdout);
- (void) fflush(stderr);
- if (ferror(stdout) || ferror(stderr)) {
- (void) fprintf(stderr,
- _("date: error: couldn't write results\n"));
- errensure();
- }
- exit(retval);
-}
-
-extern size_t strftime();
-
-#define INCR 1024
-
-static void
-timeout(FILE *const fp, const char *const format, const struct tm *const tmp)
-{
- char * cp;
- size_t result;
- size_t size;
-
- if (*format == '\0')
- return;
- size = INCR;
- cp = malloc(size);
- for ( ; ; ) {
- if (cp == NULL) {
- (void) fprintf(stderr,
- _("date: error: can't get memory\n"));
- errensure();
- exit(retval);
- }
- cp[0] = '\1';
- result = strftime(cp, size, format, tmp);
- if (result != 0 || cp[0] == '\0')
- break;
- size += INCR;
- cp = realloc(cp, size);
- }
- (void) fwrite(cp, 1, result, fp);
- free(cp);
-}
-
-static int
-sametm(register const struct tm *const atmp,
- register const struct tm *const btmp)
-{
- return atmp->tm_year == btmp->tm_year &&
- atmp->tm_mon == btmp->tm_mon &&
- atmp->tm_mday == btmp->tm_mday &&
- atmp->tm_hour == btmp->tm_hour &&
- atmp->tm_min == btmp->tm_min &&
- atmp->tm_sec == btmp->tm_sec;
-}
-
-/*
-** convert --
-** convert user's input into a time_t.
-*/
-
-#define ATOI2(ar) (ar[0] - '0') * 10 + (ar[1] - '0'); ar += 2;
-
-static time_t
-convert(register const char * const value, const int dousg, const time_t t)
-{
- register const char * cp;
- register const char * dotp;
- register int cent, year_in_cent, month, hour, day, mins, secs;
- struct tm tm, outtm;
- time_t outt;
-
- tm = *localtime(&t);
-#define DIVISOR 100
- year_in_cent = tm.tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
- cent = tm.tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR +
- year_in_cent / DIVISOR;
- year_in_cent %= DIVISOR;
- if (year_in_cent < 0) {
- year_in_cent += DIVISOR;
- --cent;
- }
- month = tm.tm_mon + 1;
- day = tm.tm_mday;
- hour = tm.tm_hour;
- mins = tm.tm_min;
- secs = 0;
-
- dotp = strchr(value, '.');
- for (cp = value; *cp != '\0'; ++cp)
- if (!is_digit(*cp) && cp != dotp)
- wildinput(_("time"), value, _("contains a nondigit"));
-
- if (dotp == NULL)
- dotp = strchr(value, '\0');
- else {
- cp = dotp + 1;
- if (strlen(cp) != 2)
- wildinput(_("time"), value,
- _("seconds part is not two digits"));
- secs = ATOI2(cp);
- }
-
- cp = value;
- switch (dotp - cp) {
- default:
- wildinput(_("time"), value,
- _("main part is wrong length"));
- case 12:
- if (!dousg) {
- cent = ATOI2(cp);
- year_in_cent = ATOI2(cp);
- }
- month = ATOI2(cp);
- day = ATOI2(cp);
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- if (dousg) {
- cent = ATOI2(cp);
- year_in_cent = ATOI2(cp);
- }
- break;
- case 8: /* mmddhhmm */
- month = ATOI2(cp);
- /* fall through to. . . */
- case 6: /* ddhhmm */
- day = ATOI2(cp);
- /* fall through to. . . */
- case 4: /* hhmm */
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- break;
- case 10:
- if (!dousg) {
- year_in_cent = ATOI2(cp);
- }
- month = ATOI2(cp);
- day = ATOI2(cp);
- hour = ATOI2(cp);
- mins = ATOI2(cp);
- if (dousg) {
- year_in_cent = ATOI2(cp);
- }
- break;
- }
-
- tm.tm_year = cent * 100 + year_in_cent - TM_YEAR_BASE;
- tm.tm_mon = month - 1;
- tm.tm_mday = day;
- tm.tm_hour = hour;
- tm.tm_min = mins;
- tm.tm_sec = secs;
- tm.tm_isdst = -1;
- outtm = tm;
- outt = mktime(&outtm);
- return sametm(&tm, &outtm) ? outt : -1;
-}
-
-/*
-** Code from here on out is either based on code provided by UCB
-** or is only called just before the program exits.
-*/
-
-/*
-** Check for iffy input.
-*/
-
-static void
-checkfinal(const char * const value,
- const int didusg,
- const time_t t,
- const time_t oldnow)
-{
- time_t othert;
- struct tm tm;
- struct tm othertm;
- register int pass;
- register long offset;
-
- /*
- ** See if there's both a USG and a BSD interpretation.
- */
- othert = convert(value, !didusg, oldnow);
- if (othert != -1 && othert != t)
- iffy(t, othert, value, _("year could be at start or end"));
- /*
- ** See if there's both a DST and a STD version.
- */
- tm = *localtime(&t);
- othertm = tm;
- othertm.tm_isdst = !tm.tm_isdst;
- othert = mktime(&othertm);
- if (othert != -1 && othertm.tm_isdst != tm.tm_isdst &&
- sametm(&tm, &othertm))
- iffy(t, othert, value,
- _("both standard and summer time versions exist"));
-/*
-** Final check.
-**
-** If a jurisdiction shifts time *without* shifting whether time is
-** summer or standard (as Hawaii, the United Kingdom, and Saudi Arabia
-** have done), routine checks for iffy times may not work.
-** So we perform this final check, deferring it until after the time has
-** been set--it may take a while, and we don't want to introduce an unnecessary
-** lag between the time the user enters their command and the time that
-** stime/settimeofday is called.
-**
-** We just check nearby times to see if any have the same representation
-** as the time that convert returned. We work our way out from the center
-** for quick response in solar time situations. We only handle common cases--
-** offsets of at most a minute, and offsets of exact numbers of minutes
-** and at most an hour.
-*/
- for (offset = 1; offset <= 60; ++offset)
- for (pass = 1; pass <= 4; ++pass) {
- if (pass == 1)
- othert = t + offset;
- else if (pass == 2)
- othert = t - offset;
- else if (pass == 3)
- othert = t + 60 * offset;
- else othert = t - 60 * offset;
- othertm = *localtime(&othert);
- if (sametm(&tm, &othertm))
- iffy(t, othert, value,
- _("multiple matching times exist"));
- }
-}
-
-static void
-iffy(const time_t thist, const time_t thatt,
- const char * const value, const char * const reason)
-{
- struct tm tm;
-
- (void) fprintf(stderr, _("date: warning: ambiguous time \"%s\", %s.\n"),
- value, reason);
- tm = *gmtime(&thist);
- /*
- ** Avoid running afoul of SCCS!
- */
- timeout(stderr, _("Time was set as if you used\n\tdate -u %m%d%H\
-%M\
-%Y.%S\n"), &tm);
- tm = *localtime(&thist);
- timeout(stderr, _("to get %c"), &tm);
- (void) fprintf(stderr, _(" (%s). Use\n"),
- tm.tm_isdst ? _("summer time") : _("standard time"));
- tm = *gmtime(&thatt);
- timeout(stderr, _("\tdate -u %m%d%H\
-%M\
-%Y.%S\n"), &tm);
- tm = *localtime(&thatt);
- timeout(stderr, _("to get %c"), &tm);
- (void) fprintf(stderr, _(" (%s).\n"),
- tm.tm_isdst ? _("summer time") : _("standard time"));
- errensure();
- exit(retval);
-}
-
-#ifdef TSP_SETDATE
-#define WAITACK 2 /* seconds */
-#define WAITDATEACK 5 /* seconds */
-
-/*
- * Set the date in the machines controlled by timedaemons
- * by communicating the new date to the local timedaemon.
- * If the timedaemon is in the master state, it performs the
- * correction on all slaves. If it is in the slave state, it
- * notifies the master that a correction is needed.
- * Returns 1 on success, 0 on failure.
- */
-static int
-netsettime(struct timeval ntv)
-{
- int s, length, port, timed_ack, found, err;
- long waittime;
- fd_set ready;
- char hostname[MAXHOSTNAMELEN];
- struct timeval tout;
- struct servent *sp;
- struct tsp msg;
- struct sockaddr_in sin, dest, from;
-
- sp = getservbyname("timed", "udp");
- if (! sp) {
- fputs(_("udp/timed: unknown service\n"), stderr);
- retval = 2;
- return (0);
- }
- dest.sin_port = sp->s_port;
- dest.sin_family = AF_INET;
- dest.sin_addr.s_addr = htonl(INADDR_ANY);
- s = socket(AF_INET, SOCK_DGRAM, 0);
- if (s < 0) {
- if (errno != EPROTONOSUPPORT)
- perror("date: socket");
- goto bad;
- }
- bzero((char *)&sin, sizeof (sin));
- sin.sin_family = AF_INET;
- for (port = IPPORT_RESERVED - 1; port > IPPORT_RESERVED / 2; port--) {
- sin.sin_port = htons(port);
- if (bind(s, (struct sockaddr *)&sin, sizeof (sin)) >= 0)
- break;
- if (errno != EADDRINUSE) {
- if (errno != EADDRNOTAVAIL)
- perror("date: bind");
- goto bad;
- }
- }
- if (port == IPPORT_RESERVED / 2) {
- fputs(_("date: All ports in use\n"), stderr);
- goto bad;
- }
- msg.tsp_type = TSP_SETDATE;
- msg.tsp_vers = TSPVERSION;
- if (gethostname(hostname, sizeof (hostname))) {
- perror("gethostname");
- goto bad;
- }
- (void) strncpy(msg.tsp_name, hostname, sizeof (hostname));
- msg.tsp_seq = htons(0);
- msg.tsp_time.tv_sec = htonl(ntv.tv_sec);
- msg.tsp_time.tv_usec = htonl(ntv.tv_usec);
- length = sizeof (struct sockaddr_in);
- if (connect(s, &dest, length) < 0) {
- perror("date: connect");
- goto bad;
- }
- if (send(s, (char *)&msg, sizeof (struct tsp), 0) < 0) {
- if (errno != ECONNREFUSED)
- perror("date: send");
- goto bad;
- }
- timed_ack = -1;
- waittime = WAITACK;
-loop:
- tout.tv_sec = waittime;
- tout.tv_usec = 0;
- FD_ZERO(&ready);
- FD_SET(s, &ready);
- found = select(FD_SETSIZE, &ready, NULL, NULL, &tout);
- length = sizeof err;
- if (getsockopt(s, SOL_SOCKET, SO_ERROR, (char *)&err, &length) == 0
- && err) {
- errno = err;
- if (errno != ECONNREFUSED)
- perror(_("date: send (delayed error)"));
- goto bad;
- }
- if (found > 0 && FD_ISSET(s, &ready)) {
- length = sizeof (struct sockaddr_in);
- if (recvfrom(s, (char *)&msg, sizeof (struct tsp), 0, &from,
- &length) < 0) {
- if (errno != ECONNREFUSED)
- perror("date: recvfrom");
- goto bad;
- }
- msg.tsp_seq = ntohs(msg.tsp_seq);
- msg.tsp_time.tv_sec = ntohl(msg.tsp_time.tv_sec);
- msg.tsp_time.tv_usec = ntohl(msg.tsp_time.tv_usec);
- switch (msg.tsp_type) {
-
- case TSP_ACK:
- timed_ack = TSP_ACK;
- waittime = WAITDATEACK;
- goto loop;
-
- case TSP_DATEACK:
- (void)close(s);
- return (1);
-
- default:
- fprintf(stderr,
- _("date: Wrong ack received from timed: %s\n"),
- tsptype[msg.tsp_type]);
- timed_ack = -1;
- break;
- }
- }
- if (timed_ack == -1)
- fputs(_("date: Can't reach time daemon, time set locally.\n"),
- stderr);
-bad:
- (void)close(s);
- retval = 2;
- return (0);
-}
-#endif /* defined TSP_SETDATE */
Copied: vendor/tzcode/2016f/date.c (from rev 7736, vendor/tzcode/dist/date.c)
===================================================================
--- vendor/tzcode/2016f/date.c (rev 0)
+++ vendor/tzcode/2016f/date.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,238 @@
+/* Display or set the current time and date. */
+
+/* Copyright 1985, 1987, 1988 The Regents of the University of California.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the University nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE. */
+
+#include "private.h"
+#include "locale.h"
+
+/*
+** The two things date knows about time are. . .
+*/
+
+#ifndef TM_YEAR_BASE
+#define TM_YEAR_BASE 1900
+#endif /* !defined TM_YEAR_BASE */
+
+#ifndef SECSPERMIN
+#define SECSPERMIN 60
+#endif /* !defined SECSPERMIN */
+
+#if !HAVE_POSIX_DECLS
+extern char ** environ;
+extern char * optarg;
+extern int optind;
+extern char * tzname[];
+#endif
+
+static int retval = EXIT_SUCCESS;
+
+static void display(const char *, time_t);
+static void dogmt(void);
+static void errensure(void);
+static void timeout(FILE *, const char *, const struct tm *);
+static void usage(void);
+
+int
+main(const int argc, char *argv[])
+{
+ register const char * format;
+ register const char * cp;
+ register int ch;
+ register bool rflag = false;
+ time_t t;
+ intmax_t secs;
+ char * endarg;
+
+#ifdef LC_ALL
+ setlocale(LC_ALL, "");
+#endif /* defined(LC_ALL) */
+#if HAVE_GETTEXT
+#ifdef TZ_DOMAINDIR
+ bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
+#endif /* defined(TEXTDOMAINDIR) */
+ textdomain(TZ_DOMAIN);
+#endif /* HAVE_GETTEXT */
+ t = time(NULL);
+ format = NULL;
+ while ((ch = getopt(argc, argv, "ucr:")) != EOF && ch != -1) {
+ switch (ch) {
+ default:
+ usage();
+ case 'u': /* do it in UT */
+ case 'c':
+ dogmt();
+ break;
+ case 'r': /* seconds since 1970 */
+ if (rflag) {
+ fprintf(stderr,
+ _("date: error: multiple -r's used"));
+ usage();
+ }
+ rflag = true;
+ errno = 0;
+ secs = strtoimax (optarg, &endarg, 0);
+ if (*endarg || optarg == endarg)
+ errno = EINVAL;
+ else if (! (time_t_min <= secs && secs <= time_t_max))
+ errno = ERANGE;
+ if (errno) {
+ perror(optarg);
+ errensure();
+ exit(retval);
+ }
+ t = secs;
+ break;
+ }
+ }
+ while (optind < argc) {
+ cp = argv[optind++];
+ if (*cp == '+')
+ if (format == NULL)
+ format = cp + 1;
+ else {
+ fprintf(stderr,
+_("date: error: multiple formats in command line\n"));
+ usage();
+ }
+ else {
+ fprintf(stderr, _("date: unknown operand: %s\n"), cp);
+ usage();
+ }
+ }
+
+ display(format, t);
+ return retval;
+}
+
+static void
+dogmt(void)
+{
+ static char ** fakeenv;
+
+ if (fakeenv == NULL) {
+ register int from;
+ register int to;
+ register int n;
+ static char tzegmt0[] = "TZ=GMT0";
+
+ for (n = 0; environ[n] != NULL; ++n)
+ continue;
+ fakeenv = malloc((n + 2) * sizeof *fakeenv);
+ if (fakeenv == NULL) {
+ perror(_("Memory exhausted"));
+ errensure();
+ exit(retval);
+ }
+ to = 0;
+ fakeenv[to++] = tzegmt0;
+ for (from = 1; environ[from] != NULL; ++from)
+ if (strncmp(environ[from], "TZ=", 3) != 0)
+ fakeenv[to++] = environ[from];
+ fakeenv[to] = NULL;
+ environ = fakeenv;
+ }
+}
+
+static void
+errensure(void)
+{
+ if (retval == EXIT_SUCCESS)
+ retval = EXIT_FAILURE;
+}
+
+static void
+usage(void)
+{
+ fprintf(stderr,
+ _("date: usage: date [-u] [-c] [-r seconds]"
+ " [+format]\n"));
+ errensure();
+ exit(retval);
+}
+
+static void
+display(char const *format, time_t now)
+{
+ struct tm *tmp;
+
+ tmp = localtime(&now);
+ if (!tmp) {
+ fprintf(stderr,
+ _("date: error: time out of range\n"));
+ errensure();
+ return;
+ }
+ timeout(stdout, format ? format : "%+", tmp);
+ putchar('\n');
+ fflush(stdout);
+ fflush(stderr);
+ if (ferror(stdout) || ferror(stderr)) {
+ fprintf(stderr,
+ _("date: error: couldn't write results\n"));
+ errensure();
+ }
+}
+
+#define INCR 1024
+
+static void
+timeout(FILE *fp, char const *format, struct tm const *tmp)
+{
+ char * cp;
+ size_t result;
+ size_t size;
+ struct tm tm;
+
+ if (*format == '\0')
+ return;
+ if (!tmp) {
+ fprintf(stderr, _("date: error: time out of range\n"));
+ errensure();
+ return;
+ }
+ tm = *tmp;
+ tmp = &tm;
+ size = INCR;
+ cp = malloc(size);
+ for ( ; ; ) {
+ if (cp == NULL) {
+ fprintf(stderr,
+ _("date: error: can't get memory\n"));
+ errensure();
+ exit(retval);
+ }
+ cp[0] = '\1';
+ result = strftime(cp, size, format, tmp);
+ if (result != 0 || cp[0] == '\0')
+ break;
+ size += INCR;
+ cp = realloc(cp, size);
+ }
+ fwrite(cp, 1, result, fp);
+ free(cp);
+}
Deleted: vendor/tzcode/2016f/difftime.c
===================================================================
--- vendor/tzcode/dist/difftime.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/difftime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,57 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*LINTLIBRARY*/
-
-#include "private.h" /* for time_t, TYPE_INTEGRAL, and TYPE_SIGNED */
-
-double
-difftime(const time_t time1, const time_t time0)
-{
- /*
- ** If (sizeof (double) > sizeof (time_t)) simply convert and subtract
- ** (assuming that the larger type has more precision).
- ** This is the common real-world case circa 2004.
- */
- if (sizeof (double) > sizeof (time_t))
- return (double) time1 - (double) time0;
- if (!TYPE_INTEGRAL(time_t)) {
- /*
- ** time_t is floating.
- */
- return time1 - time0;
- }
- if (!TYPE_SIGNED(time_t)) {
- /*
- ** time_t is integral and unsigned.
- ** The difference of two unsigned values can't overflow
- ** if the minuend is greater than or equal to the subtrahend.
- */
- if (time1 >= time0)
- return time1 - time0;
- else return -((double) (time0 - time1));
- }
- /*
- ** time_t is integral and signed.
- ** Handle cases where both time1 and time0 have the same sign
- ** (meaning that their difference cannot overflow).
- */
- if ((time1 < 0) == (time0 < 0))
- return time1 - time0;
- /*
- ** time1 and time0 have opposite signs.
- ** Punt if unsigned long is too narrow.
- */
- if (sizeof (unsigned long) < sizeof (time_t))
- return (double) time1 - (double) time0;
- /*
- ** Stay calm...decent optimizers will eliminate the complexity below.
- */
- if (time1 >= 0 /* && time0 < 0 */)
- return (unsigned long) time1 +
- (unsigned long) (-(time0 + 1)) + 1;
- return -(double) ((unsigned long) time0 +
- (unsigned long) (-(time1 + 1)) + 1);
-}
Copied: vendor/tzcode/2016f/difftime.c (from rev 7736, vendor/tzcode/dist/difftime.c)
===================================================================
--- vendor/tzcode/2016f/difftime.c (rev 0)
+++ vendor/tzcode/2016f/difftime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,58 @@
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h" /* for time_t and TYPE_SIGNED */
+
+/* Return -X as a double. Using this avoids casting to 'double'. */
+static double
+dminus(double x)
+{
+ return -x;
+}
+
+double ATTRIBUTE_CONST
+difftime(time_t time1, time_t time0)
+{
+ /*
+ ** If double is large enough, simply convert and subtract
+ ** (assuming that the larger type has more precision).
+ */
+ if (sizeof (time_t) < sizeof (double)) {
+ double t1 = time1, t0 = time0;
+ return t1 - t0;
+ }
+
+ /*
+ ** The difference of two unsigned values can't overflow
+ ** if the minuend is greater than or equal to the subtrahend.
+ */
+ if (!TYPE_SIGNED(time_t))
+ return time0 <= time1 ? time1 - time0 : dminus(time0 - time1);
+
+ /* Use uintmax_t if wide enough. */
+ if (sizeof (time_t) <= sizeof (uintmax_t)) {
+ uintmax_t t1 = time1, t0 = time0;
+ return time0 <= time1 ? t1 - t0 : dminus(t0 - t1);
+ }
+
+ /*
+ ** Handle cases where both time1 and time0 have the same sign
+ ** (meaning that their difference cannot overflow).
+ */
+ if ((time1 < 0) == (time0 < 0))
+ return time1 - time0;
+
+ /*
+ ** The values have opposite signs and uintmax_t is too narrow.
+ ** This suffers from double rounding; attempt to lessen that
+ ** by using long double temporaries.
+ */
+ {
+ long double t1 = time1, t0 = time0;
+ return t1 - t0;
+ }
+}
Deleted: vendor/tzcode/2016f/localtime.c
===================================================================
--- vendor/tzcode/dist/localtime.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/localtime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,2037 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** Leap second handling from Bradley White.
-** POSIX-style TZ environment variable handling from Guy Harris.
-*/
-
-/*LINTLIBRARY*/
-
-#include "private.h"
-#include "tzfile.h"
-#include "fcntl.h"
-#include "float.h" /* for FLT_MAX and DBL_MAX */
-
-#ifndef TZ_ABBR_MAX_LEN
-#define TZ_ABBR_MAX_LEN 16
-#endif /* !defined TZ_ABBR_MAX_LEN */
-
-#ifndef TZ_ABBR_CHAR_SET
-#define TZ_ABBR_CHAR_SET \
- "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 :+-._"
-#endif /* !defined TZ_ABBR_CHAR_SET */
-
-#ifndef TZ_ABBR_ERR_CHAR
-#define TZ_ABBR_ERR_CHAR '_'
-#endif /* !defined TZ_ABBR_ERR_CHAR */
-
-/*
-** SunOS 4.1.1 headers lack O_BINARY.
-*/
-
-#ifdef O_BINARY
-#define OPEN_MODE (O_RDONLY | O_BINARY)
-#endif /* defined O_BINARY */
-#ifndef O_BINARY
-#define OPEN_MODE O_RDONLY
-#endif /* !defined O_BINARY */
-
-#ifndef WILDABBR
-/*
-** Someone might make incorrect use of a time zone abbreviation:
-** 1. They might reference tzname[0] before calling tzset (explicitly
-** or implicitly).
-** 2. They might reference tzname[1] before calling tzset (explicitly
-** or implicitly).
-** 3. They might reference tzname[1] after setting to a time zone
-** in which Daylight Saving Time is never observed.
-** 4. They might reference tzname[0] after setting to a time zone
-** in which Standard Time is never observed.
-** 5. They might reference tm.TM_ZONE after calling offtime.
-** What's best to do in the above cases is open to debate;
-** for now, we just set things up so that in any of the five cases
-** WILDABBR is used. Another possibility: initialize tzname[0] to the
-** string "tzname[0] used before set", and similarly for the other cases.
-** And another: initialize tzname[0] to "ERA", with an explanation in the
-** manual page of what this "time zone abbreviation" means (doing this so
-** that tzname[0] has the "normal" length of three characters).
-*/
-#define WILDABBR " "
-#endif /* !defined WILDABBR */
-
-static char wildabbr[] = WILDABBR;
-
-static const char gmt[] = "GMT";
-
-/*
-** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
-** We default to US rules as of 1999-08-17.
-** POSIX 1003.1 section 8.1.1 says that the default DST rules are
-** implementation dependent; for historical reasons, US rules are a
-** common default.
-*/
-#ifndef TZDEFRULESTRING
-#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
-#endif /* !defined TZDEFDST */
-
-struct ttinfo { /* time type information */
- long tt_gmtoff; /* UTC offset in seconds */
- int tt_isdst; /* used to set tm_isdst */
- int tt_abbrind; /* abbreviation list index */
- int tt_ttisstd; /* TRUE if transition is std time */
- int tt_ttisgmt; /* TRUE if transition is UTC */
-};
-
-struct lsinfo { /* leap second information */
- time_t ls_trans; /* transition time */
- long ls_corr; /* correction to apply */
-};
-
-#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
-
-#ifdef TZNAME_MAX
-#define MY_TZNAME_MAX TZNAME_MAX
-#endif /* defined TZNAME_MAX */
-#ifndef TZNAME_MAX
-#define MY_TZNAME_MAX 255
-#endif /* !defined TZNAME_MAX */
-
-struct state {
- int leapcnt;
- int timecnt;
- int typecnt;
- int charcnt;
- int goback;
- int goahead;
- time_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
- struct ttinfo ttis[TZ_MAX_TYPES];
- char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
- (2 * (MY_TZNAME_MAX + 1)))];
- struct lsinfo lsis[TZ_MAX_LEAPS];
-};
-
-struct rule {
- int r_type; /* type of rule--see below */
- int r_day; /* day number of rule */
- int r_week; /* week number of rule */
- int r_mon; /* month number of rule */
- long r_time; /* transition time of rule */
-};
-
-#define JULIAN_DAY 0 /* Jn - Julian day */
-#define DAY_OF_YEAR 1 /* n - day of year */
-#define MONTH_NTH_DAY_OF_WEEK 2 /* Mm.n.d - month, week, day of week */
-
-/*
-** Prototypes for static functions.
-*/
-
-static long detzcode(const char * codep);
-static time_t detzcode64(const char * codep);
-static int differ_by_repeat(time_t t1, time_t t0);
-static const char * getzname(const char * strp) ATTRIBUTE_PURE;
-static const char * getqzname(const char * strp, const int delim)
- ATTRIBUTE_PURE;
-static const char * getnum(const char * strp, int * nump, int min,
- int max);
-static const char * getsecs(const char * strp, long * secsp);
-static const char * getoffset(const char * strp, long * offsetp);
-static const char * getrule(const char * strp, struct rule * rulep);
-static void gmtload(struct state * sp);
-static struct tm * gmtsub(const time_t * timep, long offset,
- struct tm * tmp);
-static struct tm * localsub(const time_t * timep, long offset,
- struct tm * tmp);
-static int increment_overflow(int * number, int delta);
-static int leaps_thru_end_of(int y) ATTRIBUTE_PURE;
-static int long_increment_overflow(long * number, int delta);
-static int long_normalize_overflow(long * tensptr,
- int * unitsptr, int base);
-static int normalize_overflow(int * tensptr, int * unitsptr,
- int base);
-static void settzname(void);
-static time_t time1(struct tm * tmp,
- struct tm * (*funcp)(const time_t *,
- long, struct tm *),
- long offset);
-static time_t time2(struct tm *tmp,
- struct tm * (*funcp)(const time_t *,
- long, struct tm*),
- long offset, int * okayp);
-static time_t time2sub(struct tm *tmp,
- struct tm * (*funcp)(const time_t *,
- long, struct tm*),
- long offset, int * okayp, int do_norm_secs);
-static struct tm * timesub(const time_t * timep, long offset,
- const struct state * sp, struct tm * tmp);
-static int tmcomp(const struct tm * atmp,
- const struct tm * btmp);
-static time_t transtime(time_t janfirst, int year,
- const struct rule * rulep, long offset)
- ATTRIBUTE_PURE;
-static int typesequiv(const struct state * sp, int a, int b);
-static int tzload(const char * name, struct state * sp,
- int doextend);
-static int tzparse(const char * name, struct state * sp,
- int lastditch);
-
-#ifdef ALL_STATE
-static struct state * lclptr;
-static struct state * gmtptr;
-#endif /* defined ALL_STATE */
-
-#ifndef ALL_STATE
-static struct state lclmem;
-static struct state gmtmem;
-#define lclptr (&lclmem)
-#define gmtptr (&gmtmem)
-#endif /* State Farm */
-
-#ifndef TZ_STRLEN_MAX
-#define TZ_STRLEN_MAX 255
-#endif /* !defined TZ_STRLEN_MAX */
-
-static char lcl_TZname[TZ_STRLEN_MAX + 1];
-static int lcl_is_set;
-static int gmt_is_set;
-
-char * tzname[2] = {
- wildabbr,
- wildabbr
-};
-
-/*
-** Section 4.12.3 of X3.159-1989 requires that
-** Except for the strftime function, these functions [asctime,
-** ctime, gmtime, localtime] return values in one of two static
-** objects: a broken-down time structure and an array of char.
-** Thanks to Paul Eggert for noting this.
-*/
-
-static struct tm tm;
-
-#ifdef USG_COMPAT
-time_t timezone = 0;
-int daylight = 0;
-#endif /* defined USG_COMPAT */
-
-#ifdef ALTZONE
-time_t altzone = 0;
-#endif /* defined ALTZONE */
-
-static long
-detzcode(const char *const codep)
-{
- register long result;
- register int i;
-
- result = (codep[0] & 0x80) ? ~0L : 0;
- for (i = 0; i < 4; ++i)
- result = (result << 8) | (codep[i] & 0xff);
- return result;
-}
-
-static time_t
-detzcode64(const char *const codep)
-{
- register time_t result;
- register int i;
-
- result = (codep[0] & 0x80) ? (~(int_fast64_t) 0) : 0;
- for (i = 0; i < 8; ++i)
- result = result * 256 + (codep[i] & 0xff);
- return result;
-}
-
-static void
-settzname(void)
-{
- register struct state * const sp = lclptr;
- register int i;
-
- tzname[0] = wildabbr;
- tzname[1] = wildabbr;
-#ifdef USG_COMPAT
- daylight = 0;
- timezone = 0;
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- altzone = 0;
-#endif /* defined ALTZONE */
-#ifdef ALL_STATE
- if (sp == NULL) {
- tzname[0] = tzname[1] = gmt;
- return;
- }
-#endif /* defined ALL_STATE */
- /*
- ** And to get the latest zone names into tzname. . .
- */
- for (i = 0; i < sp->timecnt; ++i) {
- register const struct ttinfo * const ttisp =
- &sp->ttis[
- sp->types[i]];
-
- tzname[ttisp->tt_isdst] =
- &sp->chars[ttisp->tt_abbrind];
-#ifdef USG_COMPAT
- if (ttisp->tt_isdst)
- daylight = 1;
- if (!ttisp->tt_isdst)
- timezone = -(ttisp->tt_gmtoff);
-#endif /* defined USG_COMPAT */
-#ifdef ALTZONE
- if (ttisp->tt_isdst)
- altzone = -(ttisp->tt_gmtoff);
-#endif /* defined ALTZONE */
- }
- /*
- ** Finally, scrub the abbreviations.
- ** First, replace bogus characters.
- */
- for (i = 0; i < sp->charcnt; ++i)
- if (strchr(TZ_ABBR_CHAR_SET, sp->chars[i]) == NULL)
- sp->chars[i] = TZ_ABBR_ERR_CHAR;
- /*
- ** Second, truncate long abbreviations.
- */
- for (i = 0; i < sp->typecnt; ++i) {
- register const struct ttinfo * const ttisp = &sp->ttis[i];
- register char * cp = &sp->chars[ttisp->tt_abbrind];
-
- if (strlen(cp) > TZ_ABBR_MAX_LEN &&
- strcmp(cp, GRANDPARENTED) != 0)
- *(cp + TZ_ABBR_MAX_LEN) = '\0';
- }
-}
-
-static int
-differ_by_repeat(const time_t t1, const time_t t0)
-{
- if (TYPE_INTEGRAL(time_t) &&
- TYPE_BIT(time_t) - TYPE_SIGNED(time_t) < SECSPERREPEAT_BITS)
- return 0;
- return t1 - t0 == SECSPERREPEAT;
-}
-
-static int
-tzload(register const char *name, register struct state *const sp,
- register const int doextend)
-{
- register const char * p;
- register int i;
- register int fid;
- register int stored;
- register int nread;
- typedef union {
- struct tzhead tzhead;
- char buf[2 * sizeof(struct tzhead) +
- 2 * sizeof *sp +
- 4 * TZ_MAX_TIMES];
- } u_t;
-#ifdef ALL_STATE
- register u_t * up;
-
- up = (u_t *) calloc(1, sizeof *up);
- if (up == NULL)
- return -1;
-#else /* !defined ALL_STATE */
- u_t u;
- register u_t * const up = &u;
-#endif /* !defined ALL_STATE */
-
- sp->goback = sp->goahead = FALSE;
- if (name == NULL && (name = TZDEFAULT) == NULL)
- goto oops;
- {
- register int doaccess;
- /*
- ** Section 4.9.1 of the C standard says that
- ** "FILENAME_MAX expands to an integral constant expression
- ** that is the size needed for an array of char large enough
- ** to hold the longest file name string that the implementation
- ** guarantees can be opened."
- */
- char fullname[FILENAME_MAX + 1];
-
- if (name[0] == ':')
- ++name;
- doaccess = name[0] == '/';
- if (!doaccess) {
- if ((p = TZDIR) == NULL)
- goto oops;
- if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
- goto oops;
- (void) strcpy(fullname, p);
- (void) strcat(fullname, "/");
- (void) strcat(fullname, name);
- /*
- ** Set doaccess if '.' (as in "../") shows up in name.
- */
- if (strchr(name, '.') != NULL)
- doaccess = TRUE;
- name = fullname;
- }
- if (doaccess && access(name, R_OK) != 0)
- goto oops;
- if ((fid = open(name, OPEN_MODE)) == -1)
- goto oops;
- }
- nread = read(fid, up->buf, sizeof up->buf);
- if (close(fid) < 0 || nread <= 0)
- goto oops;
- for (stored = 4; stored <= 8; stored *= 2) {
- int ttisstdcnt;
- int ttisgmtcnt;
-
- ttisstdcnt = (int) detzcode(up->tzhead.tzh_ttisstdcnt);
- ttisgmtcnt = (int) detzcode(up->tzhead.tzh_ttisgmtcnt);
- sp->leapcnt = (int) detzcode(up->tzhead.tzh_leapcnt);
- sp->timecnt = (int) detzcode(up->tzhead.tzh_timecnt);
- sp->typecnt = (int) detzcode(up->tzhead.tzh_typecnt);
- sp->charcnt = (int) detzcode(up->tzhead.tzh_charcnt);
- p = up->tzhead.tzh_charcnt + sizeof up->tzhead.tzh_charcnt;
- if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
- sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
- sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
- sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
- (ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
- (ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
- goto oops;
- if (nread - (p - up->buf) <
- sp->timecnt * stored + /* ats */
- sp->timecnt + /* types */
- sp->typecnt * 6 + /* ttinfos */
- sp->charcnt + /* chars */
- sp->leapcnt * (stored + 4) + /* lsinfos */
- ttisstdcnt + /* ttisstds */
- ttisgmtcnt) /* ttisgmts */
- goto oops;
- for (i = 0; i < sp->timecnt; ++i) {
- sp->ats[i] = (stored == 4) ?
- detzcode(p) : detzcode64(p);
- p += stored;
- }
- for (i = 0; i < sp->timecnt; ++i) {
- sp->types[i] = (unsigned char) *p++;
- if (sp->types[i] >= sp->typecnt)
- goto oops;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- ttisp->tt_gmtoff = detzcode(p);
- p += 4;
- ttisp->tt_isdst = (unsigned char) *p++;
- if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
- goto oops;
- ttisp->tt_abbrind = (unsigned char) *p++;
- if (ttisp->tt_abbrind < 0 ||
- ttisp->tt_abbrind > sp->charcnt)
- goto oops;
- }
- for (i = 0; i < sp->charcnt; ++i)
- sp->chars[i] = *p++;
- sp->chars[i] = '\0'; /* ensure '\0' at end */
- for (i = 0; i < sp->leapcnt; ++i) {
- register struct lsinfo * lsisp;
-
- lsisp = &sp->lsis[i];
- lsisp->ls_trans = (stored == 4) ?
- detzcode(p) : detzcode64(p);
- p += stored;
- lsisp->ls_corr = detzcode(p);
- p += 4;
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisstdcnt == 0)
- ttisp->tt_ttisstd = FALSE;
- else {
- ttisp->tt_ttisstd = *p++;
- if (ttisp->tt_ttisstd != TRUE &&
- ttisp->tt_ttisstd != FALSE)
- goto oops;
- }
- }
- for (i = 0; i < sp->typecnt; ++i) {
- register struct ttinfo * ttisp;
-
- ttisp = &sp->ttis[i];
- if (ttisgmtcnt == 0)
- ttisp->tt_ttisgmt = FALSE;
- else {
- ttisp->tt_ttisgmt = *p++;
- if (ttisp->tt_ttisgmt != TRUE &&
- ttisp->tt_ttisgmt != FALSE)
- goto oops;
- }
- }
- /*
- ** Out-of-sort ats should mean we're running on a
- ** signed time_t system but using a data file with
- ** unsigned values (or vice versa).
- */
- for (i = 0; i < sp->timecnt - 2; ++i)
- if (sp->ats[i] > sp->ats[i + 1]) {
- ++i;
- if (TYPE_SIGNED(time_t)) {
- /*
- ** Ignore the end (easy).
- */
- sp->timecnt = i;
- } else {
- /*
- ** Ignore the beginning (harder).
- */
- register int j;
-
- for (j = 0; j + i < sp->timecnt; ++j) {
- sp->ats[j] = sp->ats[j + i];
- sp->types[j] = sp->types[j + i];
- }
- sp->timecnt = j;
- }
- break;
- }
- /*
- ** If this is an old file, we're done.
- */
- if (up->tzhead.tzh_version[0] == '\0')
- break;
- nread -= p - up->buf;
- for (i = 0; i < nread; ++i)
- up->buf[i] = p[i];
- /*
- ** If this is a narrow integer time_t system, we're done.
- */
- if (stored >= (int) sizeof(time_t) && TYPE_INTEGRAL(time_t))
- break;
- }
- if (doextend && nread > 2 &&
- up->buf[0] == '\n' && up->buf[nread - 1] == '\n' &&
- sp->typecnt + 2 <= TZ_MAX_TYPES) {
- struct state ts;
- register int result;
-
- up->buf[nread - 1] = '\0';
- result = tzparse(&up->buf[1], &ts, FALSE);
- if (result == 0 && ts.typecnt == 2 &&
- sp->charcnt + ts.charcnt <= TZ_MAX_CHARS) {
- for (i = 0; i < 2; ++i)
- ts.ttis[i].tt_abbrind +=
- sp->charcnt;
- for (i = 0; i < ts.charcnt; ++i)
- sp->chars[sp->charcnt++] =
- ts.chars[i];
- i = 0;
- while (i < ts.timecnt &&
- ts.ats[i] <=
- sp->ats[sp->timecnt - 1])
- ++i;
- while (i < ts.timecnt &&
- sp->timecnt < TZ_MAX_TIMES) {
- sp->ats[sp->timecnt] =
- ts.ats[i];
- sp->types[sp->timecnt] =
- sp->typecnt +
- ts.types[i];
- ++sp->timecnt;
- ++i;
- }
- sp->ttis[sp->typecnt++] = ts.ttis[0];
- sp->ttis[sp->typecnt++] = ts.ttis[1];
- }
- }
- if (sp->timecnt > 1) {
- for (i = 1; i < sp->timecnt; ++i)
- if (typesequiv(sp, sp->types[i], sp->types[0]) &&
- differ_by_repeat(sp->ats[i], sp->ats[0])) {
- sp->goback = TRUE;
- break;
- }
- for (i = sp->timecnt - 2; i >= 0; --i)
- if (typesequiv(sp, sp->types[sp->timecnt - 1],
- sp->types[i]) &&
- differ_by_repeat(sp->ats[sp->timecnt - 1],
- sp->ats[i])) {
- sp->goahead = TRUE;
- break;
- }
- }
-#ifdef ALL_STATE
- free(up);
-#endif /* defined ALL_STATE */
- return 0;
-oops:
-#ifdef ALL_STATE
- free(up);
-#endif /* defined ALL_STATE */
- return -1;
-}
-
-static int
-typesequiv(const struct state *const sp, const int a, const int b)
-{
- register int result;
-
- if (sp == NULL ||
- a < 0 || a >= sp->typecnt ||
- b < 0 || b >= sp->typecnt)
- result = FALSE;
- else {
- register const struct ttinfo * ap = &sp->ttis[a];
- register const struct ttinfo * bp = &sp->ttis[b];
- result = ap->tt_gmtoff == bp->tt_gmtoff &&
- ap->tt_isdst == bp->tt_isdst &&
- ap->tt_ttisstd == bp->tt_ttisstd &&
- ap->tt_ttisgmt == bp->tt_ttisgmt &&
- strcmp(&sp->chars[ap->tt_abbrind],
- &sp->chars[bp->tt_abbrind]) == 0;
- }
- return result;
-}
-
-static const int mon_lengths[2][MONSPERYEAR] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-static const int year_lengths[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-/*
-** Given a pointer into a time zone string, scan until a character that is not
-** a valid character in a zone name is found. Return a pointer to that
-** character.
-*/
-
-static const char *
-getzname(register const char *strp)
-{
- register char c;
-
- while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
- c != '+')
- ++strp;
- return strp;
-}
-
-/*
-** Given a pointer into an extended time zone string, scan until the ending
-** delimiter of the zone name is located. Return a pointer to the delimiter.
-**
-** As with getzname above, the legal character set is actually quite
-** restricted, with other characters producing undefined results.
-** We don't do any checking here; checking is done later in common-case code.
-*/
-
-static const char *
-getqzname(register const char *strp, const int delim)
-{
- register int c;
-
- while ((c = *strp) != '\0' && c != delim)
- ++strp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number from that string.
-** Check that the number is within a specified range; if it is not, return
-** NULL.
-** Otherwise, return a pointer to the first character not part of the number.
-*/
-
-static const char *
-getnum(register const char *strp, int *const nump, const int min, const int max)
-{
- register char c;
- register int num;
-
- if (strp == NULL || !is_digit(c = *strp))
- return NULL;
- num = 0;
- do {
- num = num * 10 + (c - '0');
- if (num > max)
- return NULL; /* illegal value */
- c = *++strp;
- } while (is_digit(c));
- if (num < min)
- return NULL; /* illegal value */
- *nump = num;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a number of seconds,
-** in hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the number
-** of seconds.
-*/
-
-static const char *
-getsecs(register const char *strp, long *const secsp)
-{
- int num;
-
- /*
- ** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
- ** "M10.4.6/26", which does not conform to Posix,
- ** but which specifies the equivalent of
- ** ``02:00 on the first Sunday on or after 23 Oct''.
- */
- strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
- if (strp == NULL)
- return NULL;
- *secsp = num * (long) SECSPERHOUR;
- if (*strp == ':') {
- ++strp;
- strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
- if (strp == NULL)
- return NULL;
- *secsp += num * SECSPERMIN;
- if (*strp == ':') {
- ++strp;
- /* `SECSPERMIN' allows for leap seconds. */
- strp = getnum(strp, &num, 0, SECSPERMIN);
- if (strp == NULL)
- return NULL;
- *secsp += num;
- }
- }
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract an offset, in
-** [+-]hh[:mm[:ss]] form, from the string.
-** If any error occurs, return NULL.
-** Otherwise, return a pointer to the first character not part of the time.
-*/
-
-static const char *
-getoffset(register const char *strp, long *const offsetp)
-{
- register int neg = 0;
-
- if (*strp == '-') {
- neg = 1;
- ++strp;
- } else if (*strp == '+')
- ++strp;
- strp = getsecs(strp, offsetp);
- if (strp == NULL)
- return NULL; /* illegal time */
- if (neg)
- *offsetp = -*offsetp;
- return strp;
-}
-
-/*
-** Given a pointer into a time zone string, extract a rule in the form
-** date[/time]. See POSIX section 8 for the format of "date" and "time".
-** If a valid rule is not found, return NULL.
-** Otherwise, return a pointer to the first character not part of the rule.
-*/
-
-static const char *
-getrule(const char *strp, register struct rule *const rulep)
-{
- if (*strp == 'J') {
- /*
- ** Julian day.
- */
- rulep->r_type = JULIAN_DAY;
- ++strp;
- strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
- } else if (*strp == 'M') {
- /*
- ** Month, week, day.
- */
- rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
- ++strp;
- strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_week, 1, 5);
- if (strp == NULL)
- return NULL;
- if (*strp++ != '.')
- return NULL;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
- } else if (is_digit(*strp)) {
- /*
- ** Day of year.
- */
- rulep->r_type = DAY_OF_YEAR;
- strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
- } else return NULL; /* invalid format */
- if (strp == NULL)
- return NULL;
- if (*strp == '/') {
- /*
- ** Time specified.
- */
- ++strp;
- strp = getsecs(strp, &rulep->r_time);
- } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
- return strp;
-}
-
-/*
-** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
-** year, a rule, and the offset from UTC at the time that rule takes effect,
-** calculate the Epoch-relative time that rule takes effect.
-*/
-
-static time_t
-transtime(const time_t janfirst, const int year,
- register const struct rule *const rulep, const long offset)
-{
- register int leapyear;
- register time_t value;
- register int i;
- int d, m1, yy0, yy1, yy2, dow;
-
- INITIALIZE(value);
- leapyear = isleap(year);
- switch (rulep->r_type) {
-
- case JULIAN_DAY:
- /*
- ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
- ** years.
- ** In non-leap years, or if the day number is 59 or less, just
- ** add SECSPERDAY times the day number-1 to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
- if (leapyear && rulep->r_day >= 60)
- value += SECSPERDAY;
- break;
-
- case DAY_OF_YEAR:
- /*
- ** n - day of year.
- ** Just add SECSPERDAY times the day number to the time of
- ** January 1, midnight, to get the day.
- */
- value = janfirst + rulep->r_day * SECSPERDAY;
- break;
-
- case MONTH_NTH_DAY_OF_WEEK:
- /*
- ** Mm.n.d - nth "dth day" of month m.
- */
- value = janfirst;
- for (i = 0; i < rulep->r_mon - 1; ++i)
- value += mon_lengths[leapyear][i] * SECSPERDAY;
-
- /*
- ** Use Zeller's Congruence to get day-of-week of first day of
- ** month.
- */
- m1 = (rulep->r_mon + 9) % 12 + 1;
- yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
- yy1 = yy0 / 100;
- yy2 = yy0 % 100;
- dow = ((26 * m1 - 2) / 10 +
- 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
- if (dow < 0)
- dow += DAYSPERWEEK;
-
- /*
- ** "dow" is the day-of-week of the first day of the month. Get
- ** the day-of-month (zero-origin) of the first "dow" day of the
- ** month.
- */
- d = rulep->r_day - dow;
- if (d < 0)
- d += DAYSPERWEEK;
- for (i = 1; i < rulep->r_week; ++i) {
- if (d + DAYSPERWEEK >=
- mon_lengths[leapyear][rulep->r_mon - 1])
- break;
- d += DAYSPERWEEK;
- }
-
- /*
- ** "d" is the day-of-month (zero-origin) of the day we want.
- */
- value += d * SECSPERDAY;
- break;
- }
-
- /*
- ** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
- ** question. To get the Epoch-relative time of the specified local
- ** time on that day, add the transition time and the current offset
- ** from UTC.
- */
- return value + rulep->r_time + offset;
-}
-
-/*
-** Given a POSIX section 8-style TZ string, fill in the rule tables as
-** appropriate.
-*/
-
-static int
-tzparse(const char *name, register struct state *const sp,
- const int lastditch)
-{
- const char * stdname;
- const char * dstname;
- size_t stdlen;
- size_t dstlen;
- long stdoffset;
- long dstoffset;
- register time_t * atp;
- register unsigned char * typep;
- register char * cp;
- register int load_result;
- static struct ttinfo zttinfo;
-
- INITIALIZE(dstname);
- stdname = name;
- if (lastditch) {
- stdlen = strlen(name); /* length of standard zone name */
- name += stdlen;
- if (stdlen >= sizeof sp->chars)
- stdlen = (sizeof sp->chars) - 1;
- stdoffset = 0;
- } else {
- if (*name == '<') {
- name++;
- stdname = name;
- name = getqzname(name, '>');
- if (*name != '>')
- return (-1);
- stdlen = name - stdname;
- name++;
- } else {
- name = getzname(name);
- stdlen = name - stdname;
- }
- if (*name == '\0')
- return -1;
- name = getoffset(name, &stdoffset);
- if (name == NULL)
- return -1;
- }
- load_result = tzload(TZDEFRULES, sp, FALSE);
- if (load_result != 0)
- sp->leapcnt = 0; /* so, we're off a little */
- if (*name != '\0') {
- if (*name == '<') {
- dstname = ++name;
- name = getqzname(name, '>');
- if (*name != '>')
- return -1;
- dstlen = name - dstname;
- name++;
- } else {
- dstname = name;
- name = getzname(name);
- dstlen = name - dstname; /* length of DST zone name */
- }
- if (*name != '\0' && *name != ',' && *name != ';') {
- name = getoffset(name, &dstoffset);
- if (name == NULL)
- return -1;
- } else dstoffset = stdoffset - SECSPERHOUR;
- if (*name == '\0' && load_result != 0)
- name = TZDEFRULESTRING;
- if (*name == ',' || *name == ';') {
- struct rule start;
- struct rule end;
- register int year;
- register time_t janfirst;
- time_t starttime;
- time_t endtime;
-
- ++name;
- if ((name = getrule(name, &start)) == NULL)
- return -1;
- if (*name++ != ',')
- return -1;
- if ((name = getrule(name, &end)) == NULL)
- return -1;
- if (*name != '\0')
- return -1;
- sp->typecnt = 2; /* standard time and DST */
- /*
- ** Two transitions per year, from EPOCH_YEAR forward.
- */
- sp->ttis[0] = sp->ttis[1] = zttinfo;
- sp->ttis[0].tt_gmtoff = -dstoffset;
- sp->ttis[0].tt_isdst = 1;
- sp->ttis[0].tt_abbrind = stdlen + 1;
- sp->ttis[1].tt_gmtoff = -stdoffset;
- sp->ttis[1].tt_isdst = 0;
- sp->ttis[1].tt_abbrind = 0;
- atp = sp->ats;
- typep = sp->types;
- janfirst = 0;
- sp->timecnt = 0;
- for (year = EPOCH_YEAR;
- sp->timecnt + 2 <= TZ_MAX_TIMES;
- ++year) {
- time_t newfirst;
-
- starttime = transtime(janfirst, year, &start,
- stdoffset);
- endtime = transtime(janfirst, year, &end,
- dstoffset);
- if (starttime > endtime) {
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- } else {
- *atp++ = starttime;
- *typep++ = 0; /* DST begins */
- *atp++ = endtime;
- *typep++ = 1; /* DST ends */
- }
- sp->timecnt += 2;
- newfirst = janfirst;
- newfirst += year_lengths[isleap(year)] *
- SECSPERDAY;
- if (newfirst <= janfirst)
- break;
- janfirst = newfirst;
- }
- } else {
- register long theirstdoffset;
- register long theirdstoffset;
- register long theiroffset;
- register int isdst;
- register int i;
- register int j;
-
- if (*name != '\0')
- return -1;
- /*
- ** Initial values of theirstdoffset and theirdstoffset.
- */
- theirstdoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (!sp->ttis[j].tt_isdst) {
- theirstdoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- theirdstoffset = 0;
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- if (sp->ttis[j].tt_isdst) {
- theirdstoffset =
- -sp->ttis[j].tt_gmtoff;
- break;
- }
- }
- /*
- ** Initially we're assumed to be in standard time.
- */
- isdst = FALSE;
- theiroffset = theirstdoffset;
- /*
- ** Now juggle transition times and types
- ** tracking offsets as you do.
- */
- for (i = 0; i < sp->timecnt; ++i) {
- j = sp->types[i];
- sp->types[i] = sp->ttis[j].tt_isdst;
- if (sp->ttis[j].tt_ttisgmt) {
- /* No adjustment to transition time */
- } else {
- /*
- ** If summer time is in effect, and the
- ** transition time was not specified as
- ** standard time, add the summer time
- ** offset to the transition time;
- ** otherwise, add the standard time
- ** offset to the transition time.
- */
- /*
- ** Transitions from DST to DDST
- ** will effectively disappear since
- ** POSIX provides for only one DST
- ** offset.
- */
- if (isdst && !sp->ttis[j].tt_ttisstd) {
- sp->ats[i] += dstoffset -
- theirdstoffset;
- } else {
- sp->ats[i] += stdoffset -
- theirstdoffset;
- }
- }
- theiroffset = -sp->ttis[j].tt_gmtoff;
- if (sp->ttis[j].tt_isdst)
- theirdstoffset = theiroffset;
- else theirstdoffset = theiroffset;
- }
- /*
- ** Finally, fill in ttis.
- */
- sp->ttis[0] = sp->ttis[1] = zttinfo;
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = FALSE;
- sp->ttis[0].tt_abbrind = 0;
- sp->ttis[1].tt_gmtoff = -dstoffset;
- sp->ttis[1].tt_isdst = TRUE;
- sp->ttis[1].tt_abbrind = stdlen + 1;
- sp->typecnt = 2;
- }
- } else {
- dstlen = 0;
- sp->typecnt = 1; /* only standard time */
- sp->timecnt = 0;
- sp->ttis[0] = zttinfo;
- sp->ttis[0].tt_gmtoff = -stdoffset;
- sp->ttis[0].tt_isdst = 0;
- sp->ttis[0].tt_abbrind = 0;
- }
- sp->charcnt = stdlen + 1;
- if (dstlen != 0)
- sp->charcnt += dstlen + 1;
- if ((size_t) sp->charcnt > sizeof sp->chars)
- return -1;
- cp = sp->chars;
- (void) strncpy(cp, stdname, stdlen);
- cp += stdlen;
- *cp++ = '\0';
- if (dstlen != 0) {
- (void) strncpy(cp, dstname, dstlen);
- *(cp + dstlen) = '\0';
- }
- return 0;
-}
-
-static void
-gmtload(struct state *const sp)
-{
- if (tzload(gmt, sp, TRUE) != 0)
- (void) tzparse(gmt, sp, TRUE);
-}
-
-#ifndef STD_INSPIRED
-/*
-** A non-static declaration of tzsetwall in a system header file
-** may cause a warning about this upcoming static declaration...
-*/
-static
-#endif /* !defined STD_INSPIRED */
-void
-tzsetwall(void)
-{
- if (lcl_is_set < 0)
- return;
- lcl_is_set = -1;
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (tzload(NULL, lclptr, TRUE) != 0)
- gmtload(lclptr);
- settzname();
-}
-
-void
-tzset(void)
-{
- register const char * name;
-
- name = getenv("TZ");
- if (name == NULL) {
- tzsetwall();
- return;
- }
-
- if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
- return;
- lcl_is_set = strlen(name) < sizeof lcl_TZname;
- if (lcl_is_set)
- (void) strcpy(lcl_TZname, name);
-
-#ifdef ALL_STATE
- if (lclptr == NULL) {
- lclptr = calloc(1, sizeof *lclptr);
- if (lclptr == NULL) {
- settzname(); /* all we can do */
- return;
- }
- }
-#endif /* defined ALL_STATE */
- if (*name == '\0') {
- /*
- ** User wants it fast rather than right.
- */
- lclptr->leapcnt = 0; /* so, we're off a little */
- lclptr->timecnt = 0;
- lclptr->typecnt = 0;
- lclptr->ttis[0].tt_isdst = 0;
- lclptr->ttis[0].tt_gmtoff = 0;
- lclptr->ttis[0].tt_abbrind = 0;
- (void) strcpy(lclptr->chars, gmt);
- } else if (tzload(name, lclptr, TRUE) != 0)
- if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
- (void) gmtload(lclptr);
- settzname();
-}
-
-/*
-** The easy way to behave "as if no library function calls" localtime
-** is to not call it--so we drop its guts into "localsub", which can be
-** freely called. (And no, the PANS doesn't require the above behavior--
-** but it *is* desirable.)
-**
-** The unused offset argument is for the benefit of mktime variants.
-*/
-
-/*ARGSUSED*/
-static struct tm *
-localsub(const time_t *const timep, const long offset, struct tm *const tmp)
-{
- register struct state * sp;
- register const struct ttinfo * ttisp;
- register int i;
- register struct tm * result;
- const time_t t = *timep;
-
- sp = lclptr;
-#ifdef ALL_STATE
- if (sp == NULL)
- return gmtsub(timep, offset, tmp);
-#endif /* defined ALL_STATE */
- if ((sp->goback && t < sp->ats[0]) ||
- (sp->goahead && t > sp->ats[sp->timecnt - 1])) {
- time_t newt = t;
- register time_t seconds;
- register time_t tcycles;
- register int_fast64_t icycles;
-
- if (t < sp->ats[0])
- seconds = sp->ats[0] - t;
- else seconds = t - sp->ats[sp->timecnt - 1];
- --seconds;
- tcycles = seconds / YEARSPERREPEAT / AVGSECSPERYEAR;
- ++tcycles;
- icycles = tcycles;
- if (tcycles - icycles >= 1 || icycles - tcycles >= 1)
- return NULL;
- seconds = icycles;
- seconds *= YEARSPERREPEAT;
- seconds *= AVGSECSPERYEAR;
- if (t < sp->ats[0])
- newt += seconds;
- else newt -= seconds;
- if (newt < sp->ats[0] ||
- newt > sp->ats[sp->timecnt - 1])
- return NULL; /* "cannot happen" */
- result = localsub(&newt, offset, tmp);
- if (result == tmp) {
- register time_t newy;
-
- newy = tmp->tm_year;
- if (t < sp->ats[0])
- newy -= icycles * YEARSPERREPEAT;
- else newy += icycles * YEARSPERREPEAT;
- tmp->tm_year = newy;
- if (tmp->tm_year != newy)
- return NULL;
- }
- return result;
- }
- if (sp->timecnt == 0 || t < sp->ats[0]) {
- i = 0;
- while (sp->ttis[i].tt_isdst)
- if (++i >= sp->typecnt) {
- i = 0;
- break;
- }
- } else {
- register int lo = 1;
- register int hi = sp->timecnt;
-
- while (lo < hi) {
- register int mid = (lo + hi) >> 1;
-
- if (t < sp->ats[mid])
- hi = mid;
- else lo = mid + 1;
- }
- i = (int) sp->types[lo - 1];
- }
- ttisp = &sp->ttis[i];
- /*
- ** To get (wrong) behavior that's compatible with System V Release 2.0
- ** you'd replace the statement below with
- ** t += ttisp->tt_gmtoff;
- ** timesub(&t, 0L, sp, tmp);
- */
- result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
- tmp->tm_isdst = ttisp->tt_isdst;
- tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
-#ifdef TM_ZONE
- tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
-#endif /* defined TM_ZONE */
- return result;
-}
-
-struct tm *
-localtime(const time_t *const timep)
-{
- tzset();
- return localsub(timep, 0L, &tm);
-}
-
-/*
-** Re-entrant version of localtime.
-*/
-
-struct tm *
-localtime_r(const time_t *const timep, struct tm *tmp)
-{
- return localsub(timep, 0L, tmp);
-}
-
-/*
-** gmtsub is to gmtime as localsub is to localtime.
-*/
-
-static struct tm *
-gmtsub(const time_t *const timep, const long offset, struct tm *const tmp)
-{
- register struct tm * result;
-
- if (!gmt_is_set) {
- gmt_is_set = TRUE;
-#ifdef ALL_STATE
- gmtptr = calloc(1, sizeof *gmtptr);
- if (gmtptr != NULL)
-#endif /* defined ALL_STATE */
- gmtload(gmtptr);
- }
- result = timesub(timep, offset, gmtptr, tmp);
-#ifdef TM_ZONE
- /*
- ** Could get fancy here and deliver something such as
- ** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
- ** but this is no time for a treasure hunt.
- */
- if (offset != 0)
- tmp->TM_ZONE = wildabbr;
- else {
-#ifdef ALL_STATE
- if (gmtptr == NULL)
- tmp->TM_ZONE = gmt;
- else tmp->TM_ZONE = gmtptr->chars;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- tmp->TM_ZONE = gmtptr->chars;
-#endif /* State Farm */
- }
-#endif /* defined TM_ZONE */
- return result;
-}
-
-struct tm *
-gmtime(const time_t *const timep)
-{
- return gmtsub(timep, 0L, &tm);
-}
-
-/*
-* Re-entrant version of gmtime.
-*/
-
-struct tm *
-gmtime_r(const time_t *const timep, struct tm *tmp)
-{
- return gmtsub(timep, 0L, tmp);
-}
-
-#ifdef STD_INSPIRED
-
-struct tm *
-offtime(const time_t *const timep, const long offset)
-{
- return gmtsub(timep, offset, &tm);
-}
-
-#endif /* defined STD_INSPIRED */
-
-/*
-** Return the number of leap years through the end of the given year
-** where, to make the math easy, the answer for year zero is defined as zero.
-*/
-
-static int
-leaps_thru_end_of(register const int y)
-{
- return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
- -(leaps_thru_end_of(-(y + 1)) + 1);
-}
-
-static struct tm *
-timesub(const time_t *const timep, const long offset,
- register const struct state *const sp,
- register struct tm *const tmp)
-{
- register const struct lsinfo * lp;
- register time_t tdays;
- register int idays; /* unsigned would be so 2003 */
- register long rem;
- int y;
- register const int * ip;
- register long corr;
- register int hit;
- register int i;
-
- corr = 0;
- hit = 0;
-#ifdef ALL_STATE
- i = (sp == NULL) ? 0 : sp->leapcnt;
-#endif /* defined ALL_STATE */
-#ifndef ALL_STATE
- i = sp->leapcnt;
-#endif /* State Farm */
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans) {
- if (*timep == lp->ls_trans) {
- hit = ((i == 0 && lp->ls_corr > 0) ||
- lp->ls_corr > sp->lsis[i - 1].ls_corr);
- if (hit)
- while (i > 0 &&
- sp->lsis[i].ls_trans ==
- sp->lsis[i - 1].ls_trans + 1 &&
- sp->lsis[i].ls_corr ==
- sp->lsis[i - 1].ls_corr + 1) {
- ++hit;
- --i;
- }
- }
- corr = lp->ls_corr;
- break;
- }
- }
- y = EPOCH_YEAR;
- tdays = *timep / SECSPERDAY;
- rem = *timep - tdays * SECSPERDAY;
- while (tdays < 0 || tdays >= year_lengths[isleap(y)]) {
- int newy;
- register time_t tdelta;
- register int idelta;
- register int leapdays;
-
- tdelta = tdays / DAYSPERLYEAR;
- idelta = tdelta;
- if (tdelta - idelta >= 1 || idelta - tdelta >= 1)
- return NULL;
- if (idelta == 0)
- idelta = (tdays < 0) ? -1 : 1;
- newy = y;
- if (increment_overflow(&newy, idelta))
- return NULL;
- leapdays = leaps_thru_end_of(newy - 1) -
- leaps_thru_end_of(y - 1);
- tdays -= ((time_t) newy - y) * DAYSPERNYEAR;
- tdays -= leapdays;
- y = newy;
- }
- {
- register long seconds;
-
- seconds = tdays * SECSPERDAY + 0.5;
- tdays = seconds / SECSPERDAY;
- rem += seconds - tdays * SECSPERDAY;
- }
- /*
- ** Given the range, we can now fearlessly cast...
- */
- idays = tdays;
- rem += offset - corr;
- while (rem < 0) {
- rem += SECSPERDAY;
- --idays;
- }
- while (rem >= SECSPERDAY) {
- rem -= SECSPERDAY;
- ++idays;
- }
- while (idays < 0) {
- if (increment_overflow(&y, -1))
- return NULL;
- idays += year_lengths[isleap(y)];
- }
- while (idays >= year_lengths[isleap(y)]) {
- idays -= year_lengths[isleap(y)];
- if (increment_overflow(&y, 1))
- return NULL;
- }
- tmp->tm_year = y;
- if (increment_overflow(&tmp->tm_year, -TM_YEAR_BASE))
- return NULL;
- tmp->tm_yday = idays;
- /*
- ** The "extra" mods below avoid overflow problems.
- */
- tmp->tm_wday = EPOCH_WDAY +
- ((y - EPOCH_YEAR) % DAYSPERWEEK) *
- (DAYSPERNYEAR % DAYSPERWEEK) +
- leaps_thru_end_of(y - 1) -
- leaps_thru_end_of(EPOCH_YEAR - 1) +
- idays;
- tmp->tm_wday %= DAYSPERWEEK;
- if (tmp->tm_wday < 0)
- tmp->tm_wday += DAYSPERWEEK;
- tmp->tm_hour = (int) (rem / SECSPERHOUR);
- rem %= SECSPERHOUR;
- tmp->tm_min = (int) (rem / SECSPERMIN);
- /*
- ** A positive leap second requires a special
- ** representation. This uses "... ??:59:60" et seq.
- */
- tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
- ip = mon_lengths[isleap(y)];
- for (tmp->tm_mon = 0; idays >= ip[tmp->tm_mon]; ++(tmp->tm_mon))
- idays -= ip[tmp->tm_mon];
- tmp->tm_mday = (int) (idays + 1);
- tmp->tm_isdst = 0;
-#ifdef TM_GMTOFF
- tmp->TM_GMTOFF = offset;
-#endif /* defined TM_GMTOFF */
- return tmp;
-}
-
-char *
-ctime(const time_t *const timep)
-{
-/*
-** Section 4.12.3.2 of X3.159-1989 requires that
-** The ctime function converts the calendar time pointed to by timer
-** to local time in the form of a string. It is equivalent to
-** asctime(localtime(timer))
-*/
- return asctime(localtime(timep));
-}
-
-char *
-ctime_r(const time_t *const timep, char *buf)
-{
- struct tm mytm;
-
- return asctime_r(localtime_r(timep, &mytm), buf);
-}
-
-/*
-** Adapted from code provided by Robert Elz, who writes:
-** The "best" way to do mktime I think is based on an idea of Bob
-** Kridle's (so its said...) from a long time ago.
-** It does a binary search of the time_t space. Since time_t's are
-** just 32 bits, its a max of 32 iterations (even at 64 bits it
-** would still be very reasonable).
-*/
-
-#ifndef WRONG
-#define WRONG (-1)
-#endif /* !defined WRONG */
-
-/*
-** Normalize logic courtesy Paul Eggert.
-*/
-
-static int
-increment_overflow(int *const ip, int j)
-{
- register int const i = *ip;
-
- /*
- ** If i >= 0 there can only be overflow if i + j > INT_MAX
- ** or if j > INT_MAX - i; given i >= 0, INT_MAX - i cannot overflow.
- ** If i < 0 there can only be overflow if i + j < INT_MIN
- ** or if j < INT_MIN - i; given i < 0, INT_MIN - i cannot overflow.
- */
- if ((i >= 0) ? (j > INT_MAX - i) : (j < INT_MIN - i))
- return TRUE;
- *ip += j;
- return FALSE;
-}
-
-static int
-long_increment_overflow(long *const lp, int const m)
-{
- register long const l = *lp;
-
- if ((l >= 0) ? (m > LONG_MAX - l) : (m < LONG_MIN - l))
- return TRUE;
- *lp += m;
- return FALSE;
-}
-
-static int
-normalize_overflow(int *const tensptr, int *const unitsptr, const int base)
-{
- register int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return increment_overflow(tensptr, tensdelta);
-}
-
-static int
-long_normalize_overflow(long *const tensptr, int *const unitsptr, const int base)
-{
- register int tensdelta;
-
- tensdelta = (*unitsptr >= 0) ?
- (*unitsptr / base) :
- (-1 - (-1 - *unitsptr) / base);
- *unitsptr -= tensdelta * base;
- return long_increment_overflow(tensptr, tensdelta);
-}
-
-static int
-tmcomp(register const struct tm *const atmp,
- register const struct tm *const btmp)
-{
- register int result;
-
- if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
- (result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
- (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
- (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
- (result = (atmp->tm_min - btmp->tm_min)) == 0)
- result = atmp->tm_sec - btmp->tm_sec;
- return result;
-}
-
-static time_t
-time2sub(struct tm *const tmp,
- struct tm *(*const funcp)(const time_t *, long, struct tm *),
- const long offset,
- int *const okayp,
- const int do_norm_secs)
-{
- register const struct state * sp;
- register int dir;
- register int i, j;
- register int saved_seconds;
- register long li;
- register time_t lo;
- register time_t hi;
- long y;
- time_t newt;
- time_t t;
- struct tm yourtm, mytm;
-
- *okayp = FALSE;
- yourtm = *tmp;
- if (do_norm_secs) {
- if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
- SECSPERMIN))
- return WRONG;
- }
- if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
- return WRONG;
- if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
- return WRONG;
- y = yourtm.tm_year;
- if (long_normalize_overflow(&y, &yourtm.tm_mon, MONSPERYEAR))
- return WRONG;
- /*
- ** Turn y into an actual year number for now.
- ** It is converted back to an offset from TM_YEAR_BASE later.
- */
- if (long_increment_overflow(&y, TM_YEAR_BASE))
- return WRONG;
- while (yourtm.tm_mday <= 0) {
- if (long_increment_overflow(&y, -1))
- return WRONG;
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday += year_lengths[isleap(li)];
- }
- while (yourtm.tm_mday > DAYSPERLYEAR) {
- li = y + (1 < yourtm.tm_mon);
- yourtm.tm_mday -= year_lengths[isleap(li)];
- if (long_increment_overflow(&y, 1))
- return WRONG;
- }
- for ( ; ; ) {
- i = mon_lengths[isleap(y)][yourtm.tm_mon];
- if (yourtm.tm_mday <= i)
- break;
- yourtm.tm_mday -= i;
- if (++yourtm.tm_mon >= MONSPERYEAR) {
- yourtm.tm_mon = 0;
- if (long_increment_overflow(&y, 1))
- return WRONG;
- }
- }
- if (long_increment_overflow(&y, -TM_YEAR_BASE))
- return WRONG;
- yourtm.tm_year = y;
- if (yourtm.tm_year != y)
- return WRONG;
- if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
- saved_seconds = 0;
- else if (y + TM_YEAR_BASE < EPOCH_YEAR) {
- /*
- ** We can't set tm_sec to 0, because that might push the
- ** time below the minimum representable time.
- ** Set tm_sec to 59 instead.
- ** This assumes that the minimum representable time is
- ** not in the same minute that a leap second was deleted from,
- ** which is a safer assumption than using 58 would be.
- */
- if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
- return WRONG;
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = SECSPERMIN - 1;
- } else {
- saved_seconds = yourtm.tm_sec;
- yourtm.tm_sec = 0;
- }
- /*
- ** Do a binary search (this works whatever time_t's type is).
- */
- if (!TYPE_SIGNED(time_t)) {
- lo = 0;
- hi = lo - 1;
- } else if (!TYPE_INTEGRAL(time_t)) {
- if (sizeof(time_t) > sizeof(float))
- hi = (time_t) DBL_MAX;
- else hi = (time_t) FLT_MAX;
- lo = -hi;
- } else {
- lo = 1;
- for (i = 0; i < (int) TYPE_BIT(time_t) - 1; ++i)
- lo *= 2;
- hi = -(lo + 1);
- }
- for ( ; ; ) {
- t = lo / 2 + hi / 2;
- if (t < lo)
- t = lo;
- else if (t > hi)
- t = hi;
- if ((*funcp)(&t, offset, &mytm) == NULL) {
- /*
- ** Assume that t is too extreme to be represented in
- ** a struct tm; arrange things so that it is less
- ** extreme on the next pass.
- */
- dir = (t > 0) ? 1 : -1;
- } else dir = tmcomp(&mytm, &yourtm);
- if (dir != 0) {
- if (t == lo) {
- ++t;
- if (t <= lo)
- return WRONG;
- ++lo;
- } else if (t == hi) {
- --t;
- if (t >= hi)
- return WRONG;
- --hi;
- }
- if (lo > hi)
- return WRONG;
- if (dir > 0)
- hi = t;
- else lo = t;
- continue;
- }
- if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
- break;
- /*
- ** Right time, wrong type.
- ** Hunt for right time, right type.
- ** It's okay to guess wrong since the guess
- ** gets checked.
- */
- sp = (const struct state *)
- ((funcp == localsub) ? lclptr : gmtptr);
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = sp->typecnt - 1; i >= 0; --i) {
- if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
- continue;
- for (j = sp->typecnt - 1; j >= 0; --j) {
- if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
- continue;
- newt = t + sp->ttis[j].tt_gmtoff -
- sp->ttis[i].tt_gmtoff;
- if ((*funcp)(&newt, offset, &mytm) == NULL)
- continue;
- if (tmcomp(&mytm, &yourtm) != 0)
- continue;
- if (mytm.tm_isdst != yourtm.tm_isdst)
- continue;
- /*
- ** We have a match.
- */
- t = newt;
- goto label;
- }
- }
- return WRONG;
- }
-label:
- newt = t + saved_seconds;
- if ((newt < t) != (saved_seconds < 0))
- return WRONG;
- t = newt;
- if ((*funcp)(&t, offset, tmp))
- *okayp = TRUE;
- return t;
-}
-
-static time_t
-time2(struct tm * const tmp,
- struct tm * (*const funcp)(const time_t *, long, struct tm *),
- const long offset,
- int *const okayp)
-{
- time_t t;
-
- /*
- ** First try without normalization of seconds
- ** (in case tm_sec contains a value associated with a leap second).
- ** If that fails, try with normalization of seconds.
- */
- t = time2sub(tmp, funcp, offset, okayp, FALSE);
- return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);
-}
-
-static time_t
-time1(struct tm *const tmp,
- struct tm *(*const funcp) (const time_t *, long, struct tm *),
- const long offset)
-{
- register time_t t;
- register const struct state * sp;
- register int samei, otheri;
- register int sameind, otherind;
- register int i;
- register int nseen;
- int seen[TZ_MAX_TYPES];
- int types[TZ_MAX_TYPES];
- int okay;
-
- if (tmp == NULL) {
- errno = EINVAL;
- return WRONG;
- }
- if (tmp->tm_isdst > 1)
- tmp->tm_isdst = 1;
- t = time2(tmp, funcp, offset, &okay);
-#ifdef PCTS
- /*
- ** PCTS code courtesy Grant Sullivan.
- */
- if (okay)
- return t;
- if (tmp->tm_isdst < 0)
- tmp->tm_isdst = 0; /* reset to std and try again */
-#endif /* defined PCTS */
-#ifndef PCTS
- if (okay || tmp->tm_isdst < 0)
- return t;
-#endif /* !defined PCTS */
- /*
- ** We're supposed to assume that somebody took a time of one type
- ** and did some math on it that yielded a "struct tm" that's bad.
- ** We try to divine the type they started from and adjust to the
- ** type they need.
- */
- sp = (const struct state *) ((funcp == localsub) ? lclptr : gmtptr);
-#ifdef ALL_STATE
- if (sp == NULL)
- return WRONG;
-#endif /* defined ALL_STATE */
- for (i = 0; i < sp->typecnt; ++i)
- seen[i] = FALSE;
- nseen = 0;
- for (i = sp->timecnt - 1; i >= 0; --i)
- if (!seen[sp->types[i]]) {
- seen[sp->types[i]] = TRUE;
- types[nseen++] = sp->types[i];
- }
- for (sameind = 0; sameind < nseen; ++sameind) {
- samei = types[sameind];
- if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
- continue;
- for (otherind = 0; otherind < nseen; ++otherind) {
- otheri = types[otherind];
- if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
- continue;
- tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- t = time2(tmp, funcp, offset, &okay);
- if (okay)
- return t;
- tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
- sp->ttis[samei].tt_gmtoff;
- tmp->tm_isdst = !tmp->tm_isdst;
- }
- }
- return WRONG;
-}
-
-time_t
-mktime(struct tm *const tmp)
-{
- tzset();
- return time1(tmp, localsub, 0L);
-}
-
-#ifdef STD_INSPIRED
-
-time_t
-timelocal(struct tm *const tmp)
-{
- if (tmp != NULL)
- tmp->tm_isdst = -1; /* in case it wasn't initialized */
- return mktime(tmp);
-}
-
-time_t
-timegm(struct tm *const tmp)
-{
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, 0L);
-}
-
-time_t
-timeoff(struct tm *const tmp, const long offset)
-{
- if (tmp != NULL)
- tmp->tm_isdst = 0;
- return time1(tmp, gmtsub, offset);
-}
-
-#endif /* defined STD_INSPIRED */
-
-#ifdef CMUCS
-
-/*
-** The following is supplied for compatibility with
-** previous versions of the CMUCS runtime library.
-*/
-
-long
-gtime(struct tm *const tmp)
-{
- const time_t t = mktime(tmp);
-
- if (t == WRONG)
- return -1;
- return t;
-}
-
-#endif /* defined CMUCS */
-
-/*
-** XXX--is the below the right way to conditionalize??
-*/
-
-#ifdef STD_INSPIRED
-
-/*
-** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
-** is not the case if we are accounting for leap seconds.
-** So, we provide the following conversion routines for use
-** when exchanging timestamps with POSIX conforming systems.
-*/
-
-static long
-leapcorr(time_t *timep)
-{
- register struct state * sp;
- register struct lsinfo * lp;
- register int i;
-
- sp = lclptr;
- i = sp->leapcnt;
- while (--i >= 0) {
- lp = &sp->lsis[i];
- if (*timep >= lp->ls_trans)
- return lp->ls_corr;
- }
- return 0;
-}
-
-time_t
-time2posix(time_t t)
-{
- tzset();
- return t - leapcorr(&t);
-}
-
-time_t
-posix2time(time_t t)
-{
- time_t x;
- time_t y;
-
- tzset();
- /*
- ** For a positive leap second hit, the result
- ** is not unique. For a negative leap second
- ** hit, the corresponding time doesn't exist,
- ** so we return an adjacent second.
- */
- x = t + leapcorr(&t);
- y = x - leapcorr(&x);
- if (y < t) {
- do {
- x++;
- y = x - leapcorr(&x);
- } while (y < t);
- if (t != y)
- return x - 1;
- } else if (y > t) {
- do {
- --x;
- y = x - leapcorr(&x);
- } while (y > t);
- if (t != y)
- return x + 1;
- }
- return x;
-}
-
-#endif /* defined STD_INSPIRED */
Copied: vendor/tzcode/2016f/localtime.c (from rev 7736, vendor/tzcode/dist/localtime.c)
===================================================================
--- vendor/tzcode/2016f/localtime.c (rev 0)
+++ vendor/tzcode/2016f/localtime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,2271 @@
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** Leap second handling from Bradley White.
+** POSIX-style TZ environment variable handling from Guy Harris.
+*/
+
+/*LINTLIBRARY*/
+
+#define LOCALTIME_IMPLEMENTATION
+#include "private.h"
+
+#include "tzfile.h"
+#include "fcntl.h"
+
+#if THREAD_SAFE
+# include <pthread.h>
+static pthread_mutex_t locallock = PTHREAD_MUTEX_INITIALIZER;
+static int lock(void) { return pthread_mutex_lock(&locallock); }
+static void unlock(void) { pthread_mutex_unlock(&locallock); }
+#else
+static int lock(void) { return 0; }
+static void unlock(void) { }
+#endif
+
+/* NETBSD_INSPIRED_EXTERN functions are exported to callers if
+ NETBSD_INSPIRED is defined, and are private otherwise. */
+#if NETBSD_INSPIRED
+# define NETBSD_INSPIRED_EXTERN
+#else
+# define NETBSD_INSPIRED_EXTERN static
+#endif
+
+#ifndef TZ_ABBR_MAX_LEN
+#define TZ_ABBR_MAX_LEN 16
+#endif /* !defined TZ_ABBR_MAX_LEN */
+
+#ifndef TZ_ABBR_CHAR_SET
+#define TZ_ABBR_CHAR_SET \
+ "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 :+-._"
+#endif /* !defined TZ_ABBR_CHAR_SET */
+
+#ifndef TZ_ABBR_ERR_CHAR
+#define TZ_ABBR_ERR_CHAR '_'
+#endif /* !defined TZ_ABBR_ERR_CHAR */
+
+/*
+** SunOS 4.1.1 headers lack O_BINARY.
+*/
+
+#ifdef O_BINARY
+#define OPEN_MODE (O_RDONLY | O_BINARY)
+#endif /* defined O_BINARY */
+#ifndef O_BINARY
+#define OPEN_MODE O_RDONLY
+#endif /* !defined O_BINARY */
+
+#ifndef WILDABBR
+/*
+** Someone might make incorrect use of a time zone abbreviation:
+** 1. They might reference tzname[0] before calling tzset (explicitly
+** or implicitly).
+** 2. They might reference tzname[1] before calling tzset (explicitly
+** or implicitly).
+** 3. They might reference tzname[1] after setting to a time zone
+** in which Daylight Saving Time is never observed.
+** 4. They might reference tzname[0] after setting to a time zone
+** in which Standard Time is never observed.
+** 5. They might reference tm.TM_ZONE after calling offtime.
+** What's best to do in the above cases is open to debate;
+** for now, we just set things up so that in any of the five cases
+** WILDABBR is used. Another possibility: initialize tzname[0] to the
+** string "tzname[0] used before set", and similarly for the other cases.
+** And another: initialize tzname[0] to "ERA", with an explanation in the
+** manual page of what this "time zone abbreviation" means (doing this so
+** that tzname[0] has the "normal" length of three characters).
+*/
+#define WILDABBR " "
+#endif /* !defined WILDABBR */
+
+static const char wildabbr[] = WILDABBR;
+
+static const char gmt[] = "GMT";
+
+/*
+** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
+** We default to US rules as of 1999-08-17.
+** POSIX 1003.1 section 8.1.1 says that the default DST rules are
+** implementation dependent; for historical reasons, US rules are a
+** common default.
+*/
+#ifndef TZDEFRULESTRING
+#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
+#endif /* !defined TZDEFDST */
+
+struct ttinfo { /* time type information */
+ int_fast32_t tt_gmtoff; /* UT offset in seconds */
+ bool tt_isdst; /* used to set tm_isdst */
+ int tt_abbrind; /* abbreviation list index */
+ bool tt_ttisstd; /* transition is std time */
+ bool tt_ttisgmt; /* transition is UT */
+};
+
+struct lsinfo { /* leap second information */
+ time_t ls_trans; /* transition time */
+ int_fast64_t ls_corr; /* correction to apply */
+};
+
+#define SMALLEST(a, b) (((a) < (b)) ? (a) : (b))
+#define BIGGEST(a, b) (((a) > (b)) ? (a) : (b))
+
+#ifdef TZNAME_MAX
+#define MY_TZNAME_MAX TZNAME_MAX
+#endif /* defined TZNAME_MAX */
+#ifndef TZNAME_MAX
+#define MY_TZNAME_MAX 255
+#endif /* !defined TZNAME_MAX */
+
+struct state {
+ int leapcnt;
+ int timecnt;
+ int typecnt;
+ int charcnt;
+ bool goback;
+ bool goahead;
+ time_t ats[TZ_MAX_TIMES];
+ unsigned char types[TZ_MAX_TIMES];
+ struct ttinfo ttis[TZ_MAX_TYPES];
+ char chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
+ (2 * (MY_TZNAME_MAX + 1)))];
+ struct lsinfo lsis[TZ_MAX_LEAPS];
+ int defaulttype; /* for early times or if no transitions */
+};
+
+enum r_type {
+ JULIAN_DAY, /* Jn = Julian day */
+ DAY_OF_YEAR, /* n = day of year */
+ MONTH_NTH_DAY_OF_WEEK /* Mm.n.d = month, week, day of week */
+};
+
+struct rule {
+ enum r_type r_type; /* type of rule */
+ int r_day; /* day number of rule */
+ int r_week; /* week number of rule */
+ int r_mon; /* month number of rule */
+ int_fast32_t r_time; /* transition time of rule */
+};
+
+static struct tm *gmtsub(struct state const *, time_t const *, int_fast32_t,
+ struct tm *);
+static bool increment_overflow(int *, int);
+static bool increment_overflow_time(time_t *, int_fast32_t);
+static bool normalize_overflow32(int_fast32_t *, int *, int);
+static struct tm *timesub(time_t const *, int_fast32_t, struct state const *,
+ struct tm *);
+static bool typesequiv(struct state const *, int, int);
+static bool tzparse(char const *, struct state *, bool);
+
+#ifdef ALL_STATE
+static struct state * lclptr;
+static struct state * gmtptr;
+#endif /* defined ALL_STATE */
+
+#ifndef ALL_STATE
+static struct state lclmem;
+static struct state gmtmem;
+#define lclptr (&lclmem)
+#define gmtptr (&gmtmem)
+#endif /* State Farm */
+
+#ifndef TZ_STRLEN_MAX
+#define TZ_STRLEN_MAX 255
+#endif /* !defined TZ_STRLEN_MAX */
+
+static char lcl_TZname[TZ_STRLEN_MAX + 1];
+static int lcl_is_set;
+
+/*
+** Section 4.12.3 of X3.159-1989 requires that
+** Except for the strftime function, these functions [asctime,
+** ctime, gmtime, localtime] return values in one of two static
+** objects: a broken-down time structure and an array of char.
+** Thanks to Paul Eggert for noting this.
+*/
+
+static struct tm tm;
+
+#if !HAVE_POSIX_DECLS
+char * tzname[2] = {
+ (char *) wildabbr,
+ (char *) wildabbr
+};
+# ifdef USG_COMPAT
+long timezone;
+int daylight;
+# endif
+#endif
+
+#ifdef ALTZONE
+long altzone;
+#endif /* defined ALTZONE */
+
+/* Initialize *S to a value based on GMTOFF, ISDST, and ABBRIND. */
+static void
+init_ttinfo(struct ttinfo *s, int_fast32_t gmtoff, bool isdst, int abbrind)
+{
+ s->tt_gmtoff = gmtoff;
+ s->tt_isdst = isdst;
+ s->tt_abbrind = abbrind;
+ s->tt_ttisstd = false;
+ s->tt_ttisgmt = false;
+}
+
+static int_fast32_t
+detzcode(const char *const codep)
+{
+ register int_fast32_t result;
+ register int i;
+ int_fast32_t one = 1;
+ int_fast32_t halfmaxval = one << (32 - 2);
+ int_fast32_t maxval = halfmaxval - 1 + halfmaxval;
+ int_fast32_t minval = -1 - maxval;
+
+ result = codep[0] & 0x7f;
+ for (i = 1; i < 4; ++i)
+ result = (result << 8) | (codep[i] & 0xff);
+
+ if (codep[0] & 0x80) {
+ /* Do two's-complement negation even on non-two's-complement machines.
+ If the result would be minval - 1, return minval. */
+ result -= !TWOS_COMPLEMENT(int_fast32_t) && result != 0;
+ result += minval;
+ }
+ return result;
+}
+
+static int_fast64_t
+detzcode64(const char *const codep)
+{
+ register uint_fast64_t result;
+ register int i;
+ int_fast64_t one = 1;
+ int_fast64_t halfmaxval = one << (64 - 2);
+ int_fast64_t maxval = halfmaxval - 1 + halfmaxval;
+ int_fast64_t minval = -TWOS_COMPLEMENT(int_fast64_t) - maxval;
+
+ result = codep[0] & 0x7f;
+ for (i = 1; i < 8; ++i)
+ result = (result << 8) | (codep[i] & 0xff);
+
+ if (codep[0] & 0x80) {
+ /* Do two's-complement negation even on non-two's-complement machines.
+ If the result would be minval - 1, return minval. */
+ result -= !TWOS_COMPLEMENT(int_fast64_t) && result != 0;
+ result += minval;
+ }
+ return result;
+}
+
+static void
+update_tzname_etc(struct state const *sp, struct ttinfo const *ttisp)
+{
+ tzname[ttisp->tt_isdst] = (char *) &sp->chars[ttisp->tt_abbrind];
+#ifdef USG_COMPAT
+ if (!ttisp->tt_isdst)
+ timezone = - ttisp->tt_gmtoff;
+#endif
+#ifdef ALTZONE
+ if (ttisp->tt_isdst)
+ altzone = - ttisp->tt_gmtoff;
+#endif
+}
+
+static void
+settzname(void)
+{
+ register struct state * const sp = lclptr;
+ register int i;
+
+ tzname[0] = tzname[1] = (char *) wildabbr;
+#ifdef USG_COMPAT
+ daylight = 0;
+ timezone = 0;
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+ altzone = 0;
+#endif /* defined ALTZONE */
+ if (sp == NULL) {
+ tzname[0] = tzname[1] = (char *) gmt;
+ return;
+ }
+ /*
+ ** And to get the latest zone names into tzname. . .
+ */
+ for (i = 0; i < sp->typecnt; ++i) {
+ register const struct ttinfo * const ttisp = &sp->ttis[i];
+ update_tzname_etc(sp, ttisp);
+ }
+ for (i = 0; i < sp->timecnt; ++i) {
+ register const struct ttinfo * const ttisp =
+ &sp->ttis[
+ sp->types[i]];
+ update_tzname_etc(sp, ttisp);
+#ifdef USG_COMPAT
+ if (ttisp->tt_isdst)
+ daylight = 1;
+#endif /* defined USG_COMPAT */
+ }
+}
+
+static void
+scrub_abbrs(struct state *sp)
+{
+ int i;
+ /*
+ ** First, replace bogus characters.
+ */
+ for (i = 0; i < sp->charcnt; ++i)
+ if (strchr(TZ_ABBR_CHAR_SET, sp->chars[i]) == NULL)
+ sp->chars[i] = TZ_ABBR_ERR_CHAR;
+ /*
+ ** Second, truncate long abbreviations.
+ */
+ for (i = 0; i < sp->typecnt; ++i) {
+ register const struct ttinfo * const ttisp = &sp->ttis[i];
+ register char * cp = &sp->chars[ttisp->tt_abbrind];
+
+ if (strlen(cp) > TZ_ABBR_MAX_LEN &&
+ strcmp(cp, GRANDPARENTED) != 0)
+ *(cp + TZ_ABBR_MAX_LEN) = '\0';
+ }
+}
+
+static bool
+differ_by_repeat(const time_t t1, const time_t t0)
+{
+ if (TYPE_BIT(time_t) - TYPE_SIGNED(time_t) < SECSPERREPEAT_BITS)
+ return 0;
+ return t1 - t0 == SECSPERREPEAT;
+}
+
+/* Input buffer for data read from a compiled tz file. */
+union input_buffer {
+ /* The first part of the buffer, interpreted as a header. */
+ struct tzhead tzhead;
+
+ /* The entire buffer. */
+ char buf[2 * sizeof(struct tzhead) + 2 * sizeof (struct state)
+ + 4 * TZ_MAX_TIMES];
+};
+
+/* Local storage needed for 'tzloadbody'. */
+union local_storage {
+ /* The file name to be opened. */
+ char fullname[FILENAME_MAX + 1];
+
+ /* The results of analyzing the file's contents after it is opened. */
+ struct {
+ /* The input buffer. */
+ union input_buffer u;
+
+ /* A temporary state used for parsing a TZ string in the file. */
+ struct state st;
+ } u;
+};
+
+/* Load tz data from the file named NAME into *SP. Read extended
+ format if DOEXTEND. Use *LSP for temporary storage. Return 0 on
+ success, an errno value on failure. */
+static int
+tzloadbody(char const *name, struct state *sp, bool doextend,
+ union local_storage *lsp)
+{
+ register int i;
+ register int fid;
+ register int stored;
+ register ssize_t nread;
+ register bool doaccess;
+ register char *fullname = lsp->fullname;
+ register union input_buffer *up = &lsp->u.u;
+ register int tzheadsize = sizeof (struct tzhead);
+
+ sp->goback = sp->goahead = false;
+
+ if (! name) {
+ name = TZDEFAULT;
+ if (! name)
+ return EINVAL;
+ }
+
+ if (name[0] == ':')
+ ++name;
+ doaccess = name[0] == '/';
+ if (!doaccess) {
+ char const *p = TZDIR;
+ if (! p)
+ return EINVAL;
+ if (sizeof lsp->fullname - 1 <= strlen(p) + strlen(name))
+ return ENAMETOOLONG;
+ strcpy(fullname, p);
+ strcat(fullname, "/");
+ strcat(fullname, name);
+ /* Set doaccess if '.' (as in "../") shows up in name. */
+ if (strchr(name, '.'))
+ doaccess = true;
+ name = fullname;
+ }
+ if (doaccess && access(name, R_OK) != 0)
+ return errno;
+ fid = open(name, OPEN_MODE);
+ if (fid < 0)
+ return errno;
+
+ nread = read(fid, up->buf, sizeof up->buf);
+ if (nread < tzheadsize) {
+ int err = nread < 0 ? errno : EINVAL;
+ close(fid);
+ return err;
+ }
+ if (close(fid) < 0)
+ return errno;
+ for (stored = 4; stored <= 8; stored *= 2) {
+ int_fast32_t ttisstdcnt = detzcode(up->tzhead.tzh_ttisstdcnt);
+ int_fast32_t ttisgmtcnt = detzcode(up->tzhead.tzh_ttisgmtcnt);
+ int_fast32_t leapcnt = detzcode(up->tzhead.tzh_leapcnt);
+ int_fast32_t timecnt = detzcode(up->tzhead.tzh_timecnt);
+ int_fast32_t typecnt = detzcode(up->tzhead.tzh_typecnt);
+ int_fast32_t charcnt = detzcode(up->tzhead.tzh_charcnt);
+ char const *p = up->buf + tzheadsize;
+ if (! (0 <= leapcnt && leapcnt < TZ_MAX_LEAPS
+ && 0 < typecnt && typecnt < TZ_MAX_TYPES
+ && 0 <= timecnt && timecnt < TZ_MAX_TIMES
+ && 0 <= charcnt && charcnt < TZ_MAX_CHARS
+ && (ttisstdcnt == typecnt || ttisstdcnt == 0)
+ && (ttisgmtcnt == typecnt || ttisgmtcnt == 0)))
+ return EINVAL;
+ if (nread
+ < (tzheadsize /* struct tzhead */
+ + timecnt * stored /* ats */
+ + timecnt /* types */
+ + typecnt * 6 /* ttinfos */
+ + charcnt /* chars */
+ + leapcnt * (stored + 4) /* lsinfos */
+ + ttisstdcnt /* ttisstds */
+ + ttisgmtcnt)) /* ttisgmts */
+ return EINVAL;
+ sp->leapcnt = leapcnt;
+ sp->timecnt = timecnt;
+ sp->typecnt = typecnt;
+ sp->charcnt = charcnt;
+
+ /* Read transitions, discarding those out of time_t range.
+ But pretend the last transition before time_t_min
+ occurred at time_t_min. */
+ timecnt = 0;
+ for (i = 0; i < sp->timecnt; ++i) {
+ int_fast64_t at
+ = stored == 4 ? detzcode(p) : detzcode64(p);
+ sp->types[i] = at <= time_t_max;
+ if (sp->types[i]) {
+ time_t attime
+ = ((TYPE_SIGNED(time_t) ? at < time_t_min : at < 0)
+ ? time_t_min : at);
+ if (timecnt && attime <= sp->ats[timecnt - 1]) {
+ if (attime < sp->ats[timecnt - 1])
+ return EINVAL;
+ sp->types[i - 1] = 0;
+ timecnt--;
+ }
+ sp->ats[timecnt++] = attime;
+ }
+ p += stored;
+ }
+
+ timecnt = 0;
+ for (i = 0; i < sp->timecnt; ++i) {
+ unsigned char typ = *p++;
+ if (sp->typecnt <= typ)
+ return EINVAL;
+ if (sp->types[i])
+ sp->types[timecnt++] = typ;
+ }
+ sp->timecnt = timecnt;
+ for (i = 0; i < sp->typecnt; ++i) {
+ register struct ttinfo * ttisp;
+ unsigned char isdst, abbrind;
+
+ ttisp = &sp->ttis[i];
+ ttisp->tt_gmtoff = detzcode(p);
+ p += 4;
+ isdst = *p++;
+ if (! (isdst < 2))
+ return EINVAL;
+ ttisp->tt_isdst = isdst;
+ abbrind = *p++;
+ if (! (abbrind < sp->charcnt))
+ return EINVAL;
+ ttisp->tt_abbrind = abbrind;
+ }
+ for (i = 0; i < sp->charcnt; ++i)
+ sp->chars[i] = *p++;
+ sp->chars[i] = '\0'; /* ensure '\0' at end */
+
+ /* Read leap seconds, discarding those out of time_t range. */
+ leapcnt = 0;
+ for (i = 0; i < sp->leapcnt; ++i) {
+ int_fast64_t tr = stored == 4 ? detzcode(p) : detzcode64(p);
+ int_fast32_t corr = detzcode(p + stored);
+ p += stored + 4;
+ if (tr <= time_t_max) {
+ time_t trans
+ = ((TYPE_SIGNED(time_t) ? tr < time_t_min : tr < 0)
+ ? time_t_min : tr);
+ if (leapcnt && trans <= sp->lsis[leapcnt - 1].ls_trans) {
+ if (trans < sp->lsis[leapcnt - 1].ls_trans)
+ return EINVAL;
+ leapcnt--;
+ }
+ sp->lsis[leapcnt].ls_trans = trans;
+ sp->lsis[leapcnt].ls_corr = corr;
+ leapcnt++;
+ }
+ }
+ sp->leapcnt = leapcnt;
+
+ for (i = 0; i < sp->typecnt; ++i) {
+ register struct ttinfo * ttisp;
+
+ ttisp = &sp->ttis[i];
+ if (ttisstdcnt == 0)
+ ttisp->tt_ttisstd = false;
+ else {
+ if (*p != true && *p != false)
+ return EINVAL;
+ ttisp->tt_ttisstd = *p++;
+ }
+ }
+ for (i = 0; i < sp->typecnt; ++i) {
+ register struct ttinfo * ttisp;
+
+ ttisp = &sp->ttis[i];
+ if (ttisgmtcnt == 0)
+ ttisp->tt_ttisgmt = false;
+ else {
+ if (*p != true && *p != false)
+ return EINVAL;
+ ttisp->tt_ttisgmt = *p++;
+ }
+ }
+ /*
+ ** If this is an old file, we're done.
+ */
+ if (up->tzhead.tzh_version[0] == '\0')
+ break;
+ nread -= p - up->buf;
+ memmove(up->buf, p, nread);
+ }
+ if (doextend && nread > 2 &&
+ up->buf[0] == '\n' && up->buf[nread - 1] == '\n' &&
+ sp->typecnt + 2 <= TZ_MAX_TYPES) {
+ struct state *ts = &lsp->u.st;
+
+ up->buf[nread - 1] = '\0';
+ if (tzparse(&up->buf[1], ts, false)
+ && ts->typecnt == 2) {
+
+ /* Attempt to reuse existing abbreviations.
+ Without this, America/Anchorage would stop
+ working after 2037 when TZ_MAX_CHARS is 50, as
+ sp->charcnt equals 42 (for LMT CAT CAWT CAPT AHST
+ AHDT YST AKDT AKST) and ts->charcnt equals 10
+ (for AKST AKDT). Reusing means sp->charcnt can
+ stay 42 in this example. */
+ int gotabbr = 0;
+ int charcnt = sp->charcnt;
+ for (i = 0; i < 2; i++) {
+ char *tsabbr = ts->chars + ts->ttis[i].tt_abbrind;
+ int j;
+ for (j = 0; j < charcnt; j++)
+ if (strcmp(sp->chars + j, tsabbr) == 0) {
+ ts->ttis[i].tt_abbrind = j;
+ gotabbr++;
+ break;
+ }
+ if (! (j < charcnt)) {
+ int tsabbrlen = strlen(tsabbr);
+ if (j + tsabbrlen < TZ_MAX_CHARS) {
+ strcpy(sp->chars + j, tsabbr);
+ charcnt = j + tsabbrlen + 1;
+ ts->ttis[i].tt_abbrind = j;
+ gotabbr++;
+ }
+ }
+ }
+ if (gotabbr == 2) {
+ sp->charcnt = charcnt;
+ for (i = 0; i < ts->timecnt; i++)
+ if (sp->ats[sp->timecnt - 1] < ts->ats[i])
+ break;
+ while (i < ts->timecnt
+ && sp->timecnt < TZ_MAX_TIMES) {
+ sp->ats[sp->timecnt] = ts->ats[i];
+ sp->types[sp->timecnt] = (sp->typecnt
+ + ts->types[i]);
+ sp->timecnt++;
+ i++;
+ }
+ sp->ttis[sp->typecnt++] = ts->ttis[0];
+ sp->ttis[sp->typecnt++] = ts->ttis[1];
+ }
+ }
+ }
+ if (sp->timecnt > 1) {
+ for (i = 1; i < sp->timecnt; ++i)
+ if (typesequiv(sp, sp->types[i], sp->types[0]) &&
+ differ_by_repeat(sp->ats[i], sp->ats[0])) {
+ sp->goback = true;
+ break;
+ }
+ for (i = sp->timecnt - 2; i >= 0; --i)
+ if (typesequiv(sp, sp->types[sp->timecnt - 1],
+ sp->types[i]) &&
+ differ_by_repeat(sp->ats[sp->timecnt - 1],
+ sp->ats[i])) {
+ sp->goahead = true;
+ break;
+ }
+ }
+ /*
+ ** If type 0 is is unused in transitions,
+ ** it's the type to use for early times.
+ */
+ for (i = 0; i < sp->timecnt; ++i)
+ if (sp->types[i] == 0)
+ break;
+ i = i < sp->timecnt ? -1 : 0;
+ /*
+ ** Absent the above,
+ ** if there are transition times
+ ** and the first transition is to a daylight time
+ ** find the standard type less than and closest to
+ ** the type of the first transition.
+ */
+ if (i < 0 && sp->timecnt > 0 && sp->ttis[sp->types[0]].tt_isdst) {
+ i = sp->types[0];
+ while (--i >= 0)
+ if (!sp->ttis[i].tt_isdst)
+ break;
+ }
+ /*
+ ** If no result yet, find the first standard type.
+ ** If there is none, punt to type zero.
+ */
+ if (i < 0) {
+ i = 0;
+ while (sp->ttis[i].tt_isdst)
+ if (++i >= sp->typecnt) {
+ i = 0;
+ break;
+ }
+ }
+ sp->defaulttype = i;
+ return 0;
+}
+
+/* Load tz data from the file named NAME into *SP. Read extended
+ format if DOEXTEND. Return 0 on success, an errno value on failure. */
+static int
+tzload(char const *name, struct state *sp, bool doextend)
+{
+#ifdef ALL_STATE
+ union local_storage *lsp = malloc(sizeof *lsp);
+ if (!lsp)
+ return errno;
+ else {
+ int err = tzloadbody(name, sp, doextend, lsp);
+ free(lsp);
+ return err;
+ }
+#else
+ union local_storage ls;
+ return tzloadbody(name, sp, doextend, &ls);
+#endif
+}
+
+static bool
+typesequiv(const struct state *sp, int a, int b)
+{
+ register bool result;
+
+ if (sp == NULL ||
+ a < 0 || a >= sp->typecnt ||
+ b < 0 || b >= sp->typecnt)
+ result = false;
+ else {
+ register const struct ttinfo * ap = &sp->ttis[a];
+ register const struct ttinfo * bp = &sp->ttis[b];
+ result = ap->tt_gmtoff == bp->tt_gmtoff &&
+ ap->tt_isdst == bp->tt_isdst &&
+ ap->tt_ttisstd == bp->tt_ttisstd &&
+ ap->tt_ttisgmt == bp->tt_ttisgmt &&
+ strcmp(&sp->chars[ap->tt_abbrind],
+ &sp->chars[bp->tt_abbrind]) == 0;
+ }
+ return result;
+}
+
+static const int mon_lengths[2][MONSPERYEAR] = {
+ { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static const int year_lengths[2] = {
+ DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+/*
+** Given a pointer into a time zone string, scan until a character that is not
+** a valid character in a zone name is found. Return a pointer to that
+** character.
+*/
+
+static const char * ATTRIBUTE_PURE
+getzname(register const char *strp)
+{
+ register char c;
+
+ while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
+ c != '+')
+ ++strp;
+ return strp;
+}
+
+/*
+** Given a pointer into an extended time zone string, scan until the ending
+** delimiter of the zone name is located. Return a pointer to the delimiter.
+**
+** As with getzname above, the legal character set is actually quite
+** restricted, with other characters producing undefined results.
+** We don't do any checking here; checking is done later in common-case code.
+*/
+
+static const char * ATTRIBUTE_PURE
+getqzname(register const char *strp, const int delim)
+{
+ register int c;
+
+ while ((c = *strp) != '\0' && c != delim)
+ ++strp;
+ return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number from that string.
+** Check that the number is within a specified range; if it is not, return
+** NULL.
+** Otherwise, return a pointer to the first character not part of the number.
+*/
+
+static const char *
+getnum(register const char *strp, int *const nump, const int min, const int max)
+{
+ register char c;
+ register int num;
+
+ if (strp == NULL || !is_digit(c = *strp))
+ return NULL;
+ num = 0;
+ do {
+ num = num * 10 + (c - '0');
+ if (num > max)
+ return NULL; /* illegal value */
+ c = *++strp;
+ } while (is_digit(c));
+ if (num < min)
+ return NULL; /* illegal value */
+ *nump = num;
+ return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number of seconds,
+** in hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the number
+** of seconds.
+*/
+
+static const char *
+getsecs(register const char *strp, int_fast32_t *const secsp)
+{
+ int num;
+
+ /*
+ ** 'HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
+ ** "M10.4.6/26", which does not conform to Posix,
+ ** but which specifies the equivalent of
+ ** "02:00 on the first Sunday on or after 23 Oct".
+ */
+ strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
+ if (strp == NULL)
+ return NULL;
+ *secsp = num * (int_fast32_t) SECSPERHOUR;
+ if (*strp == ':') {
+ ++strp;
+ strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
+ if (strp == NULL)
+ return NULL;
+ *secsp += num * SECSPERMIN;
+ if (*strp == ':') {
+ ++strp;
+ /* 'SECSPERMIN' allows for leap seconds. */
+ strp = getnum(strp, &num, 0, SECSPERMIN);
+ if (strp == NULL)
+ return NULL;
+ *secsp += num;
+ }
+ }
+ return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract an offset, in
+** [+-]hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the time.
+*/
+
+static const char *
+getoffset(register const char *strp, int_fast32_t *const offsetp)
+{
+ register bool neg = false;
+
+ if (*strp == '-') {
+ neg = true;
+ ++strp;
+ } else if (*strp == '+')
+ ++strp;
+ strp = getsecs(strp, offsetp);
+ if (strp == NULL)
+ return NULL; /* illegal time */
+ if (neg)
+ *offsetp = -*offsetp;
+ return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a rule in the form
+** date[/time]. See POSIX section 8 for the format of "date" and "time".
+** If a valid rule is not found, return NULL.
+** Otherwise, return a pointer to the first character not part of the rule.
+*/
+
+static const char *
+getrule(const char *strp, register struct rule *const rulep)
+{
+ if (*strp == 'J') {
+ /*
+ ** Julian day.
+ */
+ rulep->r_type = JULIAN_DAY;
+ ++strp;
+ strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
+ } else if (*strp == 'M') {
+ /*
+ ** Month, week, day.
+ */
+ rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
+ ++strp;
+ strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
+ if (strp == NULL)
+ return NULL;
+ if (*strp++ != '.')
+ return NULL;
+ strp = getnum(strp, &rulep->r_week, 1, 5);
+ if (strp == NULL)
+ return NULL;
+ if (*strp++ != '.')
+ return NULL;
+ strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
+ } else if (is_digit(*strp)) {
+ /*
+ ** Day of year.
+ */
+ rulep->r_type = DAY_OF_YEAR;
+ strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
+ } else return NULL; /* invalid format */
+ if (strp == NULL)
+ return NULL;
+ if (*strp == '/') {
+ /*
+ ** Time specified.
+ */
+ ++strp;
+ strp = getoffset(strp, &rulep->r_time);
+ } else rulep->r_time = 2 * SECSPERHOUR; /* default = 2:00:00 */
+ return strp;
+}
+
+/*
+** Given a year, a rule, and the offset from UT at the time that rule takes
+** effect, calculate the year-relative time that rule takes effect.
+*/
+
+static int_fast32_t ATTRIBUTE_PURE
+transtime(const int year, register const struct rule *const rulep,
+ const int_fast32_t offset)
+{
+ register bool leapyear;
+ register int_fast32_t value;
+ register int i;
+ int d, m1, yy0, yy1, yy2, dow;
+
+ INITIALIZE(value);
+ leapyear = isleap(year);
+ switch (rulep->r_type) {
+
+ case JULIAN_DAY:
+ /*
+ ** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
+ ** years.
+ ** In non-leap years, or if the day number is 59 or less, just
+ ** add SECSPERDAY times the day number-1 to the time of
+ ** January 1, midnight, to get the day.
+ */
+ value = (rulep->r_day - 1) * SECSPERDAY;
+ if (leapyear && rulep->r_day >= 60)
+ value += SECSPERDAY;
+ break;
+
+ case DAY_OF_YEAR:
+ /*
+ ** n - day of year.
+ ** Just add SECSPERDAY times the day number to the time of
+ ** January 1, midnight, to get the day.
+ */
+ value = rulep->r_day * SECSPERDAY;
+ break;
+
+ case MONTH_NTH_DAY_OF_WEEK:
+ /*
+ ** Mm.n.d - nth "dth day" of month m.
+ */
+
+ /*
+ ** Use Zeller's Congruence to get day-of-week of first day of
+ ** month.
+ */
+ m1 = (rulep->r_mon + 9) % 12 + 1;
+ yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
+ yy1 = yy0 / 100;
+ yy2 = yy0 % 100;
+ dow = ((26 * m1 - 2) / 10 +
+ 1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
+ if (dow < 0)
+ dow += DAYSPERWEEK;
+
+ /*
+ ** "dow" is the day-of-week of the first day of the month. Get
+ ** the day-of-month (zero-origin) of the first "dow" day of the
+ ** month.
+ */
+ d = rulep->r_day - dow;
+ if (d < 0)
+ d += DAYSPERWEEK;
+ for (i = 1; i < rulep->r_week; ++i) {
+ if (d + DAYSPERWEEK >=
+ mon_lengths[leapyear][rulep->r_mon - 1])
+ break;
+ d += DAYSPERWEEK;
+ }
+
+ /*
+ ** "d" is the day-of-month (zero-origin) of the day we want.
+ */
+ value = d * SECSPERDAY;
+ for (i = 0; i < rulep->r_mon - 1; ++i)
+ value += mon_lengths[leapyear][i] * SECSPERDAY;
+ break;
+ }
+
+ /*
+ ** "value" is the year-relative time of 00:00:00 UT on the day in
+ ** question. To get the year-relative time of the specified local
+ ** time on that day, add the transition time and the current offset
+ ** from UT.
+ */
+ return value + rulep->r_time + offset;
+}
+
+/*
+** Given a POSIX section 8-style TZ string, fill in the rule tables as
+** appropriate.
+*/
+
+static bool
+tzparse(const char *name, struct state *sp, bool lastditch)
+{
+ const char * stdname;
+ const char * dstname;
+ size_t stdlen;
+ size_t dstlen;
+ size_t charcnt;
+ int_fast32_t stdoffset;
+ int_fast32_t dstoffset;
+ register char * cp;
+ register bool load_ok;
+
+ stdname = name;
+ if (lastditch) {
+ stdlen = sizeof gmt - 1;
+ name += stdlen;
+ stdoffset = 0;
+ } else {
+ if (*name == '<') {
+ name++;
+ stdname = name;
+ name = getqzname(name, '>');
+ if (*name != '>')
+ return false;
+ stdlen = name - stdname;
+ name++;
+ } else {
+ name = getzname(name);
+ stdlen = name - stdname;
+ }
+ if (!stdlen)
+ return false;
+ name = getoffset(name, &stdoffset);
+ if (name == NULL)
+ return false;
+ }
+ charcnt = stdlen + 1;
+ if (sizeof sp->chars < charcnt)
+ return false;
+ load_ok = tzload(TZDEFRULES, sp, false) == 0;
+ if (!load_ok)
+ sp->leapcnt = 0; /* so, we're off a little */
+ if (*name != '\0') {
+ if (*name == '<') {
+ dstname = ++name;
+ name = getqzname(name, '>');
+ if (*name != '>')
+ return false;
+ dstlen = name - dstname;
+ name++;
+ } else {
+ dstname = name;
+ name = getzname(name);
+ dstlen = name - dstname; /* length of DST zone name */
+ }
+ if (!dstlen)
+ return false;
+ charcnt += dstlen + 1;
+ if (sizeof sp->chars < charcnt)
+ return false;
+ if (*name != '\0' && *name != ',' && *name != ';') {
+ name = getoffset(name, &dstoffset);
+ if (name == NULL)
+ return false;
+ } else dstoffset = stdoffset - SECSPERHOUR;
+ if (*name == '\0' && !load_ok)
+ name = TZDEFRULESTRING;
+ if (*name == ',' || *name == ';') {
+ struct rule start;
+ struct rule end;
+ register int year;
+ register int yearlim;
+ register int timecnt;
+ time_t janfirst;
+
+ ++name;
+ if ((name = getrule(name, &start)) == NULL)
+ return false;
+ if (*name++ != ',')
+ return false;
+ if ((name = getrule(name, &end)) == NULL)
+ return false;
+ if (*name != '\0')
+ return false;
+ sp->typecnt = 2; /* standard time and DST */
+ /*
+ ** Two transitions per year, from EPOCH_YEAR forward.
+ */
+ init_ttinfo(&sp->ttis[0], -dstoffset, true, stdlen + 1);
+ init_ttinfo(&sp->ttis[1], -stdoffset, false, 0);
+ sp->defaulttype = 0;
+ timecnt = 0;
+ janfirst = 0;
+ yearlim = EPOCH_YEAR + YEARSPERREPEAT;
+ for (year = EPOCH_YEAR; year < yearlim; year++) {
+ int_fast32_t
+ starttime = transtime(year, &start, stdoffset),
+ endtime = transtime(year, &end, dstoffset);
+ int_fast32_t
+ yearsecs = (year_lengths[isleap(year)]
+ * SECSPERDAY);
+ bool reversed = endtime < starttime;
+ if (reversed) {
+ int_fast32_t swap = starttime;
+ starttime = endtime;
+ endtime = swap;
+ }
+ if (reversed
+ || (starttime < endtime
+ && (endtime - starttime
+ < (yearsecs
+ + (stdoffset - dstoffset))))) {
+ if (TZ_MAX_TIMES - 2 < timecnt)
+ break;
+ yearlim = year + YEARSPERREPEAT + 1;
+ sp->ats[timecnt] = janfirst;
+ if (increment_overflow_time
+ (&sp->ats[timecnt], starttime))
+ break;
+ sp->types[timecnt++] = reversed;
+ sp->ats[timecnt] = janfirst;
+ if (increment_overflow_time
+ (&sp->ats[timecnt], endtime))
+ break;
+ sp->types[timecnt++] = !reversed;
+ }
+ if (increment_overflow_time(&janfirst, yearsecs))
+ break;
+ }
+ sp->timecnt = timecnt;
+ if (!timecnt)
+ sp->typecnt = 1; /* Perpetual DST. */
+ } else {
+ register int_fast32_t theirstdoffset;
+ register int_fast32_t theirdstoffset;
+ register int_fast32_t theiroffset;
+ register bool isdst;
+ register int i;
+ register int j;
+
+ if (*name != '\0')
+ return false;
+ /*
+ ** Initial values of theirstdoffset and theirdstoffset.
+ */
+ theirstdoffset = 0;
+ for (i = 0; i < sp->timecnt; ++i) {
+ j = sp->types[i];
+ if (!sp->ttis[j].tt_isdst) {
+ theirstdoffset =
+ -sp->ttis[j].tt_gmtoff;
+ break;
+ }
+ }
+ theirdstoffset = 0;
+ for (i = 0; i < sp->timecnt; ++i) {
+ j = sp->types[i];
+ if (sp->ttis[j].tt_isdst) {
+ theirdstoffset =
+ -sp->ttis[j].tt_gmtoff;
+ break;
+ }
+ }
+ /*
+ ** Initially we're assumed to be in standard time.
+ */
+ isdst = false;
+ theiroffset = theirstdoffset;
+ /*
+ ** Now juggle transition times and types
+ ** tracking offsets as you do.
+ */
+ for (i = 0; i < sp->timecnt; ++i) {
+ j = sp->types[i];
+ sp->types[i] = sp->ttis[j].tt_isdst;
+ if (sp->ttis[j].tt_ttisgmt) {
+ /* No adjustment to transition time */
+ } else {
+ /*
+ ** If summer time is in effect, and the
+ ** transition time was not specified as
+ ** standard time, add the summer time
+ ** offset to the transition time;
+ ** otherwise, add the standard time
+ ** offset to the transition time.
+ */
+ /*
+ ** Transitions from DST to DDST
+ ** will effectively disappear since
+ ** POSIX provides for only one DST
+ ** offset.
+ */
+ if (isdst && !sp->ttis[j].tt_ttisstd) {
+ sp->ats[i] += dstoffset -
+ theirdstoffset;
+ } else {
+ sp->ats[i] += stdoffset -
+ theirstdoffset;
+ }
+ }
+ theiroffset = -sp->ttis[j].tt_gmtoff;
+ if (sp->ttis[j].tt_isdst)
+ theirdstoffset = theiroffset;
+ else theirstdoffset = theiroffset;
+ }
+ /*
+ ** Finally, fill in ttis.
+ */
+ init_ttinfo(&sp->ttis[0], -stdoffset, false, 0);
+ init_ttinfo(&sp->ttis[1], -dstoffset, true, stdlen + 1);
+ sp->typecnt = 2;
+ sp->defaulttype = 0;
+ }
+ } else {
+ dstlen = 0;
+ sp->typecnt = 1; /* only standard time */
+ sp->timecnt = 0;
+ init_ttinfo(&sp->ttis[0], -stdoffset, false, 0);
+ sp->defaulttype = 0;
+ }
+ sp->charcnt = charcnt;
+ cp = sp->chars;
+ memcpy(cp, stdname, stdlen);
+ cp += stdlen;
+ *cp++ = '\0';
+ if (dstlen != 0) {
+ memcpy(cp, dstname, dstlen);
+ *(cp + dstlen) = '\0';
+ }
+ return true;
+}
+
+static void
+gmtload(struct state *const sp)
+{
+ if (tzload(gmt, sp, true) != 0)
+ tzparse(gmt, sp, true);
+}
+
+/* Initialize *SP to a value appropriate for the TZ setting NAME.
+ Return 0 on success, an errno value on failure. */
+static int
+zoneinit(struct state *sp, char const *name)
+{
+ if (name && ! name[0]) {
+ /*
+ ** User wants it fast rather than right.
+ */
+ sp->leapcnt = 0; /* so, we're off a little */
+ sp->timecnt = 0;
+ sp->typecnt = 0;
+ sp->charcnt = 0;
+ sp->goback = sp->goahead = false;
+ init_ttinfo(&sp->ttis[0], 0, false, 0);
+ strcpy(sp->chars, gmt);
+ sp->defaulttype = 0;
+ return 0;
+ } else {
+ int err = tzload(name, sp, true);
+ if (err != 0 && name && name[0] != ':' && tzparse(name, sp, false))
+ err = 0;
+ if (err == 0)
+ scrub_abbrs(sp);
+ return err;
+ }
+}
+
+static void
+tzsetlcl(char const *name)
+{
+ struct state *sp = lclptr;
+ int lcl = name ? strlen(name) < sizeof lcl_TZname : -1;
+ if (lcl < 0
+ ? lcl_is_set < 0
+ : 0 < lcl_is_set && strcmp(lcl_TZname, name) == 0)
+ return;
+#ifdef ALL_STATE
+ if (! sp)
+ lclptr = sp = malloc(sizeof *lclptr);
+#endif /* defined ALL_STATE */
+ if (sp) {
+ if (zoneinit(sp, name) != 0)
+ zoneinit(sp, "");
+ if (0 < lcl)
+ strcpy(lcl_TZname, name);
+ }
+ settzname();
+ lcl_is_set = lcl;
+}
+
+#ifdef STD_INSPIRED
+void
+tzsetwall(void)
+{
+ if (lock() != 0)
+ return;
+ tzsetlcl(NULL);
+ unlock();
+}
+#endif
+
+static void
+tzset_unlocked(void)
+{
+ tzsetlcl(getenv("TZ"));
+}
+
+void
+tzset(void)
+{
+ if (lock() != 0)
+ return;
+ tzset_unlocked();
+ unlock();
+}
+
+static void
+gmtcheck(void)
+{
+ static bool gmt_is_set;
+ if (lock() != 0)
+ return;
+ if (! gmt_is_set) {
+#ifdef ALL_STATE
+ gmtptr = malloc(sizeof *gmtptr);
+#endif
+ if (gmtptr)
+ gmtload(gmtptr);
+ gmt_is_set = true;
+ }
+ unlock();
+}
+
+#if NETBSD_INSPIRED
+
+timezone_t
+tzalloc(char const *name)
+{
+ timezone_t sp = malloc(sizeof *sp);
+ if (sp) {
+ int err = zoneinit(sp, name);
+ if (err != 0) {
+ free(sp);
+ errno = err;
+ return NULL;
+ }
+ }
+ return sp;
+}
+
+void
+tzfree(timezone_t sp)
+{
+ free(sp);
+}
+
+/*
+** NetBSD 6.1.4 has ctime_rz, but omit it because POSIX says ctime and
+** ctime_r are obsolescent and have potential security problems that
+** ctime_rz would share. Callers can instead use localtime_rz + strftime.
+**
+** NetBSD 6.1.4 has tzgetname, but omit it because it doesn't work
+** in zones with three or more time zone abbreviations.
+** Callers can instead use localtime_rz + strftime.
+*/
+
+#endif
+
+/*
+** The easy way to behave "as if no library function calls" localtime
+** is to not call it, so we drop its guts into "localsub", which can be
+** freely called. (And no, the PANS doesn't require the above behavior,
+** but it *is* desirable.)
+**
+** If successful and SETNAME is nonzero,
+** set the applicable parts of tzname, timezone and altzone;
+** however, it's OK to omit this step if the time zone is POSIX-compatible,
+** since in that case tzset should have already done this step correctly.
+** SETNAME's type is intfast32_t for compatibility with gmtsub,
+** but it is actually a boolean and its value should be 0 or 1.
+*/
+
+/*ARGSUSED*/
+static struct tm *
+localsub(struct state const *sp, time_t const *timep, int_fast32_t setname,
+ struct tm *const tmp)
+{
+ register const struct ttinfo * ttisp;
+ register int i;
+ register struct tm * result;
+ const time_t t = *timep;
+
+ if (sp == NULL) {
+ /* Don't bother to set tzname etc.; tzset has already done it. */
+ return gmtsub(gmtptr, timep, 0, tmp);
+ }
+ if ((sp->goback && t < sp->ats[0]) ||
+ (sp->goahead && t > sp->ats[sp->timecnt - 1])) {
+ time_t newt = t;
+ register time_t seconds;
+ register time_t years;
+
+ if (t < sp->ats[0])
+ seconds = sp->ats[0] - t;
+ else seconds = t - sp->ats[sp->timecnt - 1];
+ --seconds;
+ years = (seconds / SECSPERREPEAT + 1) * YEARSPERREPEAT;
+ seconds = years * AVGSECSPERYEAR;
+ if (t < sp->ats[0])
+ newt += seconds;
+ else newt -= seconds;
+ if (newt < sp->ats[0] ||
+ newt > sp->ats[sp->timecnt - 1])
+ return NULL; /* "cannot happen" */
+ result = localsub(sp, &newt, setname, tmp);
+ if (result) {
+ register int_fast64_t newy;
+
+ newy = result->tm_year;
+ if (t < sp->ats[0])
+ newy -= years;
+ else newy += years;
+ if (! (INT_MIN <= newy && newy <= INT_MAX))
+ return NULL;
+ result->tm_year = newy;
+ }
+ return result;
+ }
+ if (sp->timecnt == 0 || t < sp->ats[0]) {
+ i = sp->defaulttype;
+ } else {
+ register int lo = 1;
+ register int hi = sp->timecnt;
+
+ while (lo < hi) {
+ register int mid = (lo + hi) >> 1;
+
+ if (t < sp->ats[mid])
+ hi = mid;
+ else lo = mid + 1;
+ }
+ i = (int) sp->types[lo - 1];
+ }
+ ttisp = &sp->ttis[i];
+ /*
+ ** To get (wrong) behavior that's compatible with System V Release 2.0
+ ** you'd replace the statement below with
+ ** t += ttisp->tt_gmtoff;
+ ** timesub(&t, 0L, sp, tmp);
+ */
+ result = timesub(&t, ttisp->tt_gmtoff, sp, tmp);
+ if (result) {
+ result->tm_isdst = ttisp->tt_isdst;
+#ifdef TM_ZONE
+ result->TM_ZONE = (char *) &sp->chars[ttisp->tt_abbrind];
+#endif /* defined TM_ZONE */
+ if (setname)
+ update_tzname_etc(sp, ttisp);
+ }
+ return result;
+}
+
+#if NETBSD_INSPIRED
+
+struct tm *
+localtime_rz(struct state *sp, time_t const *timep, struct tm *tmp)
+{
+ return localsub(sp, timep, 0, tmp);
+}
+
+#endif
+
+static struct tm *
+localtime_tzset(time_t const *timep, struct tm *tmp, bool setname)
+{
+ int err = lock();
+ if (err) {
+ errno = err;
+ return NULL;
+ }
+ if (setname || !lcl_is_set)
+ tzset_unlocked();
+ tmp = localsub(lclptr, timep, setname, tmp);
+ unlock();
+ return tmp;
+}
+
+struct tm *
+localtime(const time_t *timep)
+{
+ return localtime_tzset(timep, &tm, true);
+}
+
+struct tm *
+localtime_r(const time_t *timep, struct tm *tmp)
+{
+ return localtime_tzset(timep, tmp, false);
+}
+
+/*
+** gmtsub is to gmtime as localsub is to localtime.
+*/
+
+static struct tm *
+gmtsub(struct state const *sp, time_t const *timep, int_fast32_t offset,
+ struct tm *tmp)
+{
+ register struct tm * result;
+
+ result = timesub(timep, offset, gmtptr, tmp);
+#ifdef TM_ZONE
+ /*
+ ** Could get fancy here and deliver something such as
+ ** "UT+xxxx" or "UT-xxxx" if offset is non-zero,
+ ** but this is no time for a treasure hunt.
+ */
+ tmp->TM_ZONE = ((char *)
+ (offset ? wildabbr : gmtptr ? gmtptr->chars : gmt));
+#endif /* defined TM_ZONE */
+ return result;
+}
+
+/*
+* Re-entrant version of gmtime.
+*/
+
+struct tm *
+gmtime_r(const time_t *timep, struct tm *tmp)
+{
+ gmtcheck();
+ return gmtsub(gmtptr, timep, 0, tmp);
+}
+
+struct tm *
+gmtime(const time_t *timep)
+{
+ return gmtime_r(timep, &tm);
+}
+
+#ifdef STD_INSPIRED
+
+struct tm *
+offtime(const time_t *timep, long offset)
+{
+ gmtcheck();
+ return gmtsub(gmtptr, timep, offset, &tm);
+}
+
+#endif /* defined STD_INSPIRED */
+
+/*
+** Return the number of leap years through the end of the given year
+** where, to make the math easy, the answer for year zero is defined as zero.
+*/
+
+static int ATTRIBUTE_PURE
+leaps_thru_end_of(register const int y)
+{
+ return (y >= 0) ? (y / 4 - y / 100 + y / 400) :
+ -(leaps_thru_end_of(-(y + 1)) + 1);
+}
+
+static struct tm *
+timesub(const time_t *timep, int_fast32_t offset,
+ const struct state *sp, struct tm *tmp)
+{
+ register const struct lsinfo * lp;
+ register time_t tdays;
+ register int idays; /* unsigned would be so 2003 */
+ register int_fast64_t rem;
+ int y;
+ register const int * ip;
+ register int_fast64_t corr;
+ register bool hit;
+ register int i;
+
+ corr = 0;
+ hit = false;
+ i = (sp == NULL) ? 0 : sp->leapcnt;
+ while (--i >= 0) {
+ lp = &sp->lsis[i];
+ if (*timep >= lp->ls_trans) {
+ if (*timep == lp->ls_trans) {
+ hit = ((i == 0 && lp->ls_corr > 0) ||
+ lp->ls_corr > sp->lsis[i - 1].ls_corr);
+ if (hit)
+ while (i > 0 &&
+ sp->lsis[i].ls_trans ==
+ sp->lsis[i - 1].ls_trans + 1 &&
+ sp->lsis[i].ls_corr ==
+ sp->lsis[i - 1].ls_corr + 1) {
+ ++hit;
+ --i;
+ }
+ }
+ corr = lp->ls_corr;
+ break;
+ }
+ }
+ y = EPOCH_YEAR;
+ tdays = *timep / SECSPERDAY;
+ rem = *timep % SECSPERDAY;
+ while (tdays < 0 || tdays >= year_lengths[isleap(y)]) {
+ int newy;
+ register time_t tdelta;
+ register int idelta;
+ register int leapdays;
+
+ tdelta = tdays / DAYSPERLYEAR;
+ if (! ((! TYPE_SIGNED(time_t) || INT_MIN <= tdelta)
+ && tdelta <= INT_MAX))
+ goto out_of_range;
+ idelta = tdelta;
+ if (idelta == 0)
+ idelta = (tdays < 0) ? -1 : 1;
+ newy = y;
+ if (increment_overflow(&newy, idelta))
+ goto out_of_range;
+ leapdays = leaps_thru_end_of(newy - 1) -
+ leaps_thru_end_of(y - 1);
+ tdays -= ((time_t) newy - y) * DAYSPERNYEAR;
+ tdays -= leapdays;
+ y = newy;
+ }
+ /*
+ ** Given the range, we can now fearlessly cast...
+ */
+ idays = tdays;
+ rem += offset - corr;
+ while (rem < 0) {
+ rem += SECSPERDAY;
+ --idays;
+ }
+ while (rem >= SECSPERDAY) {
+ rem -= SECSPERDAY;
+ ++idays;
+ }
+ while (idays < 0) {
+ if (increment_overflow(&y, -1))
+ goto out_of_range;
+ idays += year_lengths[isleap(y)];
+ }
+ while (idays >= year_lengths[isleap(y)]) {
+ idays -= year_lengths[isleap(y)];
+ if (increment_overflow(&y, 1))
+ goto out_of_range;
+ }
+ tmp->tm_year = y;
+ if (increment_overflow(&tmp->tm_year, -TM_YEAR_BASE))
+ goto out_of_range;
+ tmp->tm_yday = idays;
+ /*
+ ** The "extra" mods below avoid overflow problems.
+ */
+ tmp->tm_wday = EPOCH_WDAY +
+ ((y - EPOCH_YEAR) % DAYSPERWEEK) *
+ (DAYSPERNYEAR % DAYSPERWEEK) +
+ leaps_thru_end_of(y - 1) -
+ leaps_thru_end_of(EPOCH_YEAR - 1) +
+ idays;
+ tmp->tm_wday %= DAYSPERWEEK;
+ if (tmp->tm_wday < 0)
+ tmp->tm_wday += DAYSPERWEEK;
+ tmp->tm_hour = (int) (rem / SECSPERHOUR);
+ rem %= SECSPERHOUR;
+ tmp->tm_min = (int) (rem / SECSPERMIN);
+ /*
+ ** A positive leap second requires a special
+ ** representation. This uses "... ??:59:60" et seq.
+ */
+ tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
+ ip = mon_lengths[isleap(y)];
+ for (tmp->tm_mon = 0; idays >= ip[tmp->tm_mon]; ++(tmp->tm_mon))
+ idays -= ip[tmp->tm_mon];
+ tmp->tm_mday = (int) (idays + 1);
+ tmp->tm_isdst = 0;
+#ifdef TM_GMTOFF
+ tmp->TM_GMTOFF = offset;
+#endif /* defined TM_GMTOFF */
+ return tmp;
+
+ out_of_range:
+ errno = EOVERFLOW;
+ return NULL;
+}
+
+char *
+ctime(const time_t *timep)
+{
+/*
+** Section 4.12.3.2 of X3.159-1989 requires that
+** The ctime function converts the calendar time pointed to by timer
+** to local time in the form of a string. It is equivalent to
+** asctime(localtime(timer))
+*/
+ struct tm *tmp = localtime(timep);
+ return tmp ? asctime(tmp) : NULL;
+}
+
+char *
+ctime_r(const time_t *timep, char *buf)
+{
+ struct tm mytm;
+ struct tm *tmp = localtime_r(timep, &mytm);
+ return tmp ? asctime_r(tmp, buf) : NULL;
+}
+
+/*
+** Adapted from code provided by Robert Elz, who writes:
+** The "best" way to do mktime I think is based on an idea of Bob
+** Kridle's (so its said...) from a long time ago.
+** It does a binary search of the time_t space. Since time_t's are
+** just 32 bits, its a max of 32 iterations (even at 64 bits it
+** would still be very reasonable).
+*/
+
+#ifndef WRONG
+#define WRONG (-1)
+#endif /* !defined WRONG */
+
+/*
+** Normalize logic courtesy Paul Eggert.
+*/
+
+static bool
+increment_overflow(int *ip, int j)
+{
+ register int const i = *ip;
+
+ /*
+ ** If i >= 0 there can only be overflow if i + j > INT_MAX
+ ** or if j > INT_MAX - i; given i >= 0, INT_MAX - i cannot overflow.
+ ** If i < 0 there can only be overflow if i + j < INT_MIN
+ ** or if j < INT_MIN - i; given i < 0, INT_MIN - i cannot overflow.
+ */
+ if ((i >= 0) ? (j > INT_MAX - i) : (j < INT_MIN - i))
+ return true;
+ *ip += j;
+ return false;
+}
+
+static bool
+increment_overflow32(int_fast32_t *const lp, int const m)
+{
+ register int_fast32_t const l = *lp;
+
+ if ((l >= 0) ? (m > INT_FAST32_MAX - l) : (m < INT_FAST32_MIN - l))
+ return true;
+ *lp += m;
+ return false;
+}
+
+static bool
+increment_overflow_time(time_t *tp, int_fast32_t j)
+{
+ /*
+ ** This is like
+ ** 'if (! (time_t_min <= *tp + j && *tp + j <= time_t_max)) ...',
+ ** except that it does the right thing even if *tp + j would overflow.
+ */
+ if (! (j < 0
+ ? (TYPE_SIGNED(time_t) ? time_t_min - j <= *tp : -1 - j < *tp)
+ : *tp <= time_t_max - j))
+ return true;
+ *tp += j;
+ return false;
+}
+
+static bool
+normalize_overflow(int *const tensptr, int *const unitsptr, const int base)
+{
+ register int tensdelta;
+
+ tensdelta = (*unitsptr >= 0) ?
+ (*unitsptr / base) :
+ (-1 - (-1 - *unitsptr) / base);
+ *unitsptr -= tensdelta * base;
+ return increment_overflow(tensptr, tensdelta);
+}
+
+static bool
+normalize_overflow32(int_fast32_t *tensptr, int *unitsptr, int base)
+{
+ register int tensdelta;
+
+ tensdelta = (*unitsptr >= 0) ?
+ (*unitsptr / base) :
+ (-1 - (-1 - *unitsptr) / base);
+ *unitsptr -= tensdelta * base;
+ return increment_overflow32(tensptr, tensdelta);
+}
+
+static int
+tmcomp(register const struct tm *const atmp,
+ register const struct tm *const btmp)
+{
+ register int result;
+
+ if (atmp->tm_year != btmp->tm_year)
+ return atmp->tm_year < btmp->tm_year ? -1 : 1;
+ if ((result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
+ (result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
+ (result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
+ (result = (atmp->tm_min - btmp->tm_min)) == 0)
+ result = atmp->tm_sec - btmp->tm_sec;
+ return result;
+}
+
+static time_t
+time2sub(struct tm *const tmp,
+ struct tm *(*funcp)(struct state const *, time_t const *,
+ int_fast32_t, struct tm *),
+ struct state const *sp,
+ const int_fast32_t offset,
+ bool *okayp,
+ bool do_norm_secs)
+{
+ register int dir;
+ register int i, j;
+ register int saved_seconds;
+ register int_fast32_t li;
+ register time_t lo;
+ register time_t hi;
+ int_fast32_t y;
+ time_t newt;
+ time_t t;
+ struct tm yourtm, mytm;
+
+ *okayp = false;
+ yourtm = *tmp;
+ if (do_norm_secs) {
+ if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
+ SECSPERMIN))
+ return WRONG;
+ }
+ if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
+ return WRONG;
+ if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
+ return WRONG;
+ y = yourtm.tm_year;
+ if (normalize_overflow32(&y, &yourtm.tm_mon, MONSPERYEAR))
+ return WRONG;
+ /*
+ ** Turn y into an actual year number for now.
+ ** It is converted back to an offset from TM_YEAR_BASE later.
+ */
+ if (increment_overflow32(&y, TM_YEAR_BASE))
+ return WRONG;
+ while (yourtm.tm_mday <= 0) {
+ if (increment_overflow32(&y, -1))
+ return WRONG;
+ li = y + (1 < yourtm.tm_mon);
+ yourtm.tm_mday += year_lengths[isleap(li)];
+ }
+ while (yourtm.tm_mday > DAYSPERLYEAR) {
+ li = y + (1 < yourtm.tm_mon);
+ yourtm.tm_mday -= year_lengths[isleap(li)];
+ if (increment_overflow32(&y, 1))
+ return WRONG;
+ }
+ for ( ; ; ) {
+ i = mon_lengths[isleap(y)][yourtm.tm_mon];
+ if (yourtm.tm_mday <= i)
+ break;
+ yourtm.tm_mday -= i;
+ if (++yourtm.tm_mon >= MONSPERYEAR) {
+ yourtm.tm_mon = 0;
+ if (increment_overflow32(&y, 1))
+ return WRONG;
+ }
+ }
+ if (increment_overflow32(&y, -TM_YEAR_BASE))
+ return WRONG;
+ if (! (INT_MIN <= y && y <= INT_MAX))
+ return WRONG;
+ yourtm.tm_year = y;
+ if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
+ saved_seconds = 0;
+ else if (y + TM_YEAR_BASE < EPOCH_YEAR) {
+ /*
+ ** We can't set tm_sec to 0, because that might push the
+ ** time below the minimum representable time.
+ ** Set tm_sec to 59 instead.
+ ** This assumes that the minimum representable time is
+ ** not in the same minute that a leap second was deleted from,
+ ** which is a safer assumption than using 58 would be.
+ */
+ if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
+ return WRONG;
+ saved_seconds = yourtm.tm_sec;
+ yourtm.tm_sec = SECSPERMIN - 1;
+ } else {
+ saved_seconds = yourtm.tm_sec;
+ yourtm.tm_sec = 0;
+ }
+ /*
+ ** Do a binary search (this works whatever time_t's type is).
+ */
+ lo = time_t_min;
+ hi = time_t_max;
+ for ( ; ; ) {
+ t = lo / 2 + hi / 2;
+ if (t < lo)
+ t = lo;
+ else if (t > hi)
+ t = hi;
+ if (! funcp(sp, &t, offset, &mytm)) {
+ /*
+ ** Assume that t is too extreme to be represented in
+ ** a struct tm; arrange things so that it is less
+ ** extreme on the next pass.
+ */
+ dir = (t > 0) ? 1 : -1;
+ } else dir = tmcomp(&mytm, &yourtm);
+ if (dir != 0) {
+ if (t == lo) {
+ if (t == time_t_max)
+ return WRONG;
+ ++t;
+ ++lo;
+ } else if (t == hi) {
+ if (t == time_t_min)
+ return WRONG;
+ --t;
+ --hi;
+ }
+ if (lo > hi)
+ return WRONG;
+ if (dir > 0)
+ hi = t;
+ else lo = t;
+ continue;
+ }
+#if defined TM_GMTOFF && ! UNINIT_TRAP
+ if (mytm.TM_GMTOFF != yourtm.TM_GMTOFF
+ && (yourtm.TM_GMTOFF < 0
+ ? (-SECSPERDAY <= yourtm.TM_GMTOFF
+ && (mytm.TM_GMTOFF <=
+ (SMALLEST (INT_FAST32_MAX, LONG_MAX)
+ + yourtm.TM_GMTOFF)))
+ : (yourtm.TM_GMTOFF <= SECSPERDAY
+ && ((BIGGEST (INT_FAST32_MIN, LONG_MIN)
+ + yourtm.TM_GMTOFF)
+ <= mytm.TM_GMTOFF)))) {
+ /* MYTM matches YOURTM except with the wrong UTC offset.
+ YOURTM.TM_GMTOFF is plausible, so try it instead.
+ It's OK if YOURTM.TM_GMTOFF contains uninitialized data,
+ since the guess gets checked. */
+ time_t altt = t;
+ int_fast32_t diff = mytm.TM_GMTOFF - yourtm.TM_GMTOFF;
+ if (!increment_overflow_time(&altt, diff)) {
+ struct tm alttm;
+ if (funcp(sp, &altt, offset, &alttm)
+ && alttm.tm_isdst == mytm.tm_isdst
+ && alttm.TM_GMTOFF == yourtm.TM_GMTOFF
+ && tmcomp(&alttm, &yourtm) == 0) {
+ t = altt;
+ mytm = alttm;
+ }
+ }
+ }
+#endif
+ if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
+ break;
+ /*
+ ** Right time, wrong type.
+ ** Hunt for right time, right type.
+ ** It's okay to guess wrong since the guess
+ ** gets checked.
+ */
+ if (sp == NULL)
+ return WRONG;
+ for (i = sp->typecnt - 1; i >= 0; --i) {
+ if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
+ continue;
+ for (j = sp->typecnt - 1; j >= 0; --j) {
+ if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
+ continue;
+ newt = t + sp->ttis[j].tt_gmtoff -
+ sp->ttis[i].tt_gmtoff;
+ if (! funcp(sp, &newt, offset, &mytm))
+ continue;
+ if (tmcomp(&mytm, &yourtm) != 0)
+ continue;
+ if (mytm.tm_isdst != yourtm.tm_isdst)
+ continue;
+ /*
+ ** We have a match.
+ */
+ t = newt;
+ goto label;
+ }
+ }
+ return WRONG;
+ }
+label:
+ newt = t + saved_seconds;
+ if ((newt < t) != (saved_seconds < 0))
+ return WRONG;
+ t = newt;
+ if (funcp(sp, &t, offset, tmp))
+ *okayp = true;
+ return t;
+}
+
+static time_t
+time2(struct tm * const tmp,
+ struct tm *(*funcp)(struct state const *, time_t const *,
+ int_fast32_t, struct tm *),
+ struct state const *sp,
+ const int_fast32_t offset,
+ bool *okayp)
+{
+ time_t t;
+
+ /*
+ ** First try without normalization of seconds
+ ** (in case tm_sec contains a value associated with a leap second).
+ ** If that fails, try with normalization of seconds.
+ */
+ t = time2sub(tmp, funcp, sp, offset, okayp, false);
+ return *okayp ? t : time2sub(tmp, funcp, sp, offset, okayp, true);
+}
+
+static time_t
+time1(struct tm *const tmp,
+ struct tm *(*funcp) (struct state const *, time_t const *,
+ int_fast32_t, struct tm *),
+ struct state const *sp,
+ const int_fast32_t offset)
+{
+ register time_t t;
+ register int samei, otheri;
+ register int sameind, otherind;
+ register int i;
+ register int nseen;
+ char seen[TZ_MAX_TYPES];
+ unsigned char types[TZ_MAX_TYPES];
+ bool okay;
+
+ if (tmp == NULL) {
+ errno = EINVAL;
+ return WRONG;
+ }
+ if (tmp->tm_isdst > 1)
+ tmp->tm_isdst = 1;
+ t = time2(tmp, funcp, sp, offset, &okay);
+ if (okay)
+ return t;
+ if (tmp->tm_isdst < 0)
+#ifdef PCTS
+ /*
+ ** POSIX Conformance Test Suite code courtesy Grant Sullivan.
+ */
+ tmp->tm_isdst = 0; /* reset to std and try again */
+#else
+ return t;
+#endif /* !defined PCTS */
+ /*
+ ** We're supposed to assume that somebody took a time of one type
+ ** and did some math on it that yielded a "struct tm" that's bad.
+ ** We try to divine the type they started from and adjust to the
+ ** type they need.
+ */
+ if (sp == NULL)
+ return WRONG;
+ for (i = 0; i < sp->typecnt; ++i)
+ seen[i] = false;
+ nseen = 0;
+ for (i = sp->timecnt - 1; i >= 0; --i)
+ if (!seen[sp->types[i]]) {
+ seen[sp->types[i]] = true;
+ types[nseen++] = sp->types[i];
+ }
+ for (sameind = 0; sameind < nseen; ++sameind) {
+ samei = types[sameind];
+ if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
+ continue;
+ for (otherind = 0; otherind < nseen; ++otherind) {
+ otheri = types[otherind];
+ if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
+ continue;
+ tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
+ sp->ttis[samei].tt_gmtoff;
+ tmp->tm_isdst = !tmp->tm_isdst;
+ t = time2(tmp, funcp, sp, offset, &okay);
+ if (okay)
+ return t;
+ tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
+ sp->ttis[samei].tt_gmtoff;
+ tmp->tm_isdst = !tmp->tm_isdst;
+ }
+ }
+ return WRONG;
+}
+
+static time_t
+mktime_tzname(struct state *sp, struct tm *tmp, bool setname)
+{
+ if (sp)
+ return time1(tmp, localsub, sp, setname);
+ else {
+ gmtcheck();
+ return time1(tmp, gmtsub, gmtptr, 0);
+ }
+}
+
+#if NETBSD_INSPIRED
+
+time_t
+mktime_z(struct state *sp, struct tm *tmp)
+{
+ return mktime_tzname(sp, tmp, false);
+}
+
+#endif
+
+time_t
+mktime(struct tm *tmp)
+{
+ time_t t;
+ int err = lock();
+ if (err) {
+ errno = err;
+ return -1;
+ }
+ tzset_unlocked();
+ t = mktime_tzname(lclptr, tmp, true);
+ unlock();
+ return t;
+}
+
+#ifdef STD_INSPIRED
+
+time_t
+timelocal(struct tm *tmp)
+{
+ if (tmp != NULL)
+ tmp->tm_isdst = -1; /* in case it wasn't initialized */
+ return mktime(tmp);
+}
+
+time_t
+timegm(struct tm *tmp)
+{
+ return timeoff(tmp, 0);
+}
+
+time_t
+timeoff(struct tm *tmp, long offset)
+{
+ if (tmp)
+ tmp->tm_isdst = 0;
+ gmtcheck();
+ return time1(tmp, gmtsub, gmtptr, offset);
+}
+
+#endif /* defined STD_INSPIRED */
+
+/*
+** XXX--is the below the right way to conditionalize??
+*/
+
+#ifdef STD_INSPIRED
+
+/*
+** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
+** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
+** is not the case if we are accounting for leap seconds.
+** So, we provide the following conversion routines for use
+** when exchanging timestamps with POSIX conforming systems.
+*/
+
+static int_fast64_t
+leapcorr(struct state const *sp, time_t t)
+{
+ register struct lsinfo const * lp;
+ register int i;
+
+ i = sp->leapcnt;
+ while (--i >= 0) {
+ lp = &sp->lsis[i];
+ if (t >= lp->ls_trans)
+ return lp->ls_corr;
+ }
+ return 0;
+}
+
+NETBSD_INSPIRED_EXTERN time_t ATTRIBUTE_PURE
+time2posix_z(struct state *sp, time_t t)
+{
+ return t - leapcorr(sp, t);
+}
+
+time_t
+time2posix(time_t t)
+{
+ int err = lock();
+ if (err) {
+ errno = err;
+ return -1;
+ }
+ if (!lcl_is_set)
+ tzset_unlocked();
+ if (lclptr)
+ t = time2posix_z(lclptr, t);
+ unlock();
+ return t;
+}
+
+NETBSD_INSPIRED_EXTERN time_t ATTRIBUTE_PURE
+posix2time_z(struct state *sp, time_t t)
+{
+ time_t x;
+ time_t y;
+ /*
+ ** For a positive leap second hit, the result
+ ** is not unique. For a negative leap second
+ ** hit, the corresponding time doesn't exist,
+ ** so we return an adjacent second.
+ */
+ x = t + leapcorr(sp, t);
+ y = x - leapcorr(sp, x);
+ if (y < t) {
+ do {
+ x++;
+ y = x - leapcorr(sp, x);
+ } while (y < t);
+ x -= y != t;
+ } else if (y > t) {
+ do {
+ --x;
+ y = x - leapcorr(sp, x);
+ } while (y > t);
+ x += y != t;
+ }
+ return x;
+}
+
+time_t
+posix2time(time_t t)
+{
+ int err = lock();
+ if (err) {
+ errno = err;
+ return -1;
+ }
+ if (!lcl_is_set)
+ tzset_unlocked();
+ if (lclptr)
+ t = posix2time_z(lclptr, t);
+ unlock();
+ return t;
+}
+
+#endif /* defined STD_INSPIRED */
+
+#ifdef time_tz
+
+/* Convert from the underlying system's time_t to the ersatz time_tz,
+ which is called 'time_t' in this file. */
+
+time_t
+time(time_t *p)
+{
+ time_t r = sys_time(0);
+ if (p)
+ *p = r;
+ return r;
+}
+
+#endif
Deleted: vendor/tzcode/2016f/newctime.3
===================================================================
--- vendor/tzcode/dist/newctime.3 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newctime.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,240 +0,0 @@
-.TH NEWCTIME 3
-.SH NAME
-asctime, ctime, difftime, gmtime, localtime, mktime \- convert date and time to ASCII
-.SH SYNOPSIS
-.nf
-.B extern char *tzname[2];
-.PP
-.B void tzset()
-.PP
-.B #include <sys/types.h>
-.PP
-.B char *ctime(clock)
-.B const time_t *clock;
-.PP
-.B double difftime(time1, time0)
-.B time_t time1;
-.B time_t time0;
-.PP
-.B #include <time.h>
-.PP
-.B char *asctime(tm)
-.B const struct tm *tm;
-.PP
-.B struct tm *localtime(clock)
-.B const time_t *clock;
-.PP
-.B struct tm *gmtime(clock)
-.B const time_t *clock;
-.PP
-.B time_t mktime(tm)
-.B struct tm *tm;
-.PP
-.B cc ... -ltz
-.fi
-.SH DESCRIPTION
-.I Ctime\^
-converts a long integer, pointed to by
-.IR clock ,
-representing the time in seconds since
-00:00:00 UTC, 1970-01-01,
-and returns a pointer to a
-string of the form
-.br
-.ce
-.eo
-Thu Nov 24 18:22:48 1986\n\0
-.br
-.ec
-Years requiring fewer than four characters are padded with leading zeroes.
-For years longer than four characters, the string is of the form
-.br
-.ce
-.eo
-Thu Nov 24 18:22:48 81986\n\0
-.ec
-.br
-with five spaces before the year.
-These unusual formats are designed to make it less likely that older
-software that expects exactly 26 bytes of output will mistakenly output
-misleading values for out-of-range years.
-.PP
-.I Localtime\^
-and
-.I gmtime\^
-return pointers to ``tm'' structures, described below.
-.I Localtime\^
-corrects for the time zone and any time zone adjustments
-(such as Daylight Saving Time in the United States).
-After filling in the ``tm'' structure,
-.I localtime
-sets the
-.BR tm_isdst 'th
-element of
-.B tzname
-to a pointer to an
-ASCII string that's the time zone abbreviation to be used with
-.IR localtime 's
-return value.
-.PP
-.I Gmtime\^
-converts to Coordinated Universal Time.
-.PP
-.I Asctime\^
-converts a time value contained in a
-``tm'' structure to a string,
-as shown in the above example,
-and returns a pointer to the string.
-.PP
-.I Mktime\^
-converts the broken-down time,
-expressed as local time,
-in the structure pointed to by
-.I tm
-into a calendar time value with the same encoding as that of the values
-returned by the
-.I time
-function.
-The original values of the
-.B tm_wday
-and
-.B tm_yday
-components of the structure are ignored,
-and the original values of the other components are not restricted
-to their normal ranges.
-(A positive or zero value for
-.B tm_isdst
-causes
-.I mktime
-to presume initially that summer time (for example, Daylight Saving Time
-in the U.S.A.)
-respectively,
-is or is not in effect for the specified time.
-A negative value for
-.B tm_isdst
-causes the
-.I mktime
-function to attempt to divine whether summer time is in effect
-for the specified time; in this case it does not use a consistent
-rule and may give a different answer when later
-presented with the same argument.)
-On successful completion, the values of the
-.B tm_wday
-and
-.B tm_yday
-components of the structure are set appropriately,
-and the other components are set to represent the specified calendar time,
-but with their values forced to their normal ranges; the final value of
-.B tm_mday
-is not set until
-.B tm_mon
-and
-.B tm_year
-are determined.
-.I Mktime\^
-returns the specified calendar time;
-If the calendar time cannot be represented,
-it returns
-.BR -1 .
-.PP
-.I Difftime\^
-returns the difference between two calendar times,
-.RI ( time1
--
-.IR time0 ),
-expressed in seconds.
-.PP
-Declarations of all the functions and externals, and the ``tm'' structure,
-are in the
-.B <time.h>\^
-header file.
-The structure (of type)
-.B struct tm
-includes the following fields:
-.RS
-.PP
-.nf
-.ta .5i +\w'long tm_gmtoff;\0\0'u
- int tm_sec; /\(** seconds (0 - 60) \(**/
- int tm_min; /\(** minutes (0 - 59) \(**/
- int tm_hour; /\(** hours (0 - 23) \(**/
- int tm_mday; /\(** day of month (1 - 31) \(**/
- int tm_mon; /\(** month of year (0 - 11) \(**/
- int tm_year; /\(** year \- 1900 \(**/
- int tm_wday; /\(** day of week (Sunday = 0) \(**/
- int tm_yday; /\(** day of year (0 - 365) \(**/
- int tm_isdst; /\(** is summer time in effect? \(**/
- char \(**tm_zone; /\(** abbreviation of timezone name \(**/
- long tm_gmtoff; /\(** offset from UTC in seconds \(**/
-.fi
-.RE
-.PP
-The
-.I tm_zone
-and
-.I tm_gmtoff
-fields exist, and are filled in, only if arrangements to do
-so were made when the library containing these functions was
-created.
-There is no guarantee that these fields will continue to exist
-in this form in future releases of this code.
-.PP
-.I Tm_isdst\^
-is non-zero if summer time is in effect.
-.PP
-.I Tm_gmtoff
-is the offset (in seconds) of the time represented
-from UTC, with positive values indicating east
-of the Prime Meridian.
-.SH FILES
-.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
-/usr/local/etc/zoneinfo time zone information directory
-.br
-/usr/local/etc/zoneinfo/localtime local time zone file
-.br
-/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
-.br
-/usr/local/etc/zoneinfo/GMT for UTC leap seconds
-.sp
-If
-.B /usr/local/etc/zoneinfo/GMT
-is absent,
-UTC leap seconds are loaded from
-.BR /usr/local/etc/zoneinfo/posixrules .
-.SH SEE ALSO
-getenv(3),
-newstrftime(3),
-newtzset(3),
-time(2),
-tzfile(5)
-.SH NOTES
-The return values point to static data;
-the data is overwritten by each call.
-The
-.B tm_zone
-field of a returned
-.B "struct tm"
-points to a static array of characters, which
-will also be overwritten at the next call
-(and by calls to
-.IR tzset ).
-.PP
-.I Asctime\^
-and
-.I ctime\^
-behave strangely for years before 1000 or after 9999.
-The 1989 and 1999 editions of the C Standard say
-that years from \-99 through 999 are converted without
-extra spaces, but this conflicts with longstanding
-tradition and with this implementation.
-Traditional implementations of these two functions are
-restricted to years in the range 1900 through 2099.
-To avoid this portability mess, new programs should use
-.I strftime\^
-instead.
-.PP
-Avoid using out-of-range values with
-.I mktime
-when setting up lunch with promptness sticklers in Riyadh.
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/newctime.3 (from rev 7736, vendor/tzcode/dist/newctime.3)
===================================================================
--- vendor/tzcode/2016f/newctime.3 (rev 0)
+++ vendor/tzcode/2016f/newctime.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,306 @@
+.TH NEWCTIME 3
+.SH NAME
+asctime, ctime, difftime, gmtime, localtime, mktime \- convert date and time
+.SH SYNOPSIS
+.nf
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B #include <time.h>
+.PP
+.B extern char *tzname[2];
+.PP
+.B char *ctime(time_t const *clock);
+.PP
+.B char *ctime_r(time_t const *clock, char *buf);
+.PP
+.B double difftime(time_t time1, time_t time0);
+.PP
+.B char *asctime(struct tm const *tm);
+.PP
+.B "char *asctime_r(struct tm const *restrict tm,"
+.B " char *restrict result);"
+.PP
+.B struct tm *localtime(time_t const *clock);
+.PP
+.B "struct tm *localtime_r(time_t const *restrict clock,"
+.B " struct tm *restrict result);"
+.PP
+.B "struct tm *localtime_rz(timezone_t restrict zone,"
+.B " time_t const *restrict clock,"
+.B " struct tm *restrict result);"
+.PP
+.B struct tm *gmtime(time_t const *clock);
+.PP
+.B "struct tm *gmtime_r(time_t const *restrict clock,"
+.B " struct tm *restrict result);"
+.PP
+.B time_t mktime(struct tm *tm);
+.PP
+.B "time_t mktime_z(timezone_t restrict zone,"
+.B " struct tm *restrict tm);"
+.PP
+.B cc ... \*-ltz
+.fi
+.SH DESCRIPTION
+.ie '\(en'' .ds en \-
+.el .ds en \(en
+.ie '\(lq'' .ds lq \&"\"
+.el .ds lq \(lq\"
+.ie '\(rq'' .ds rq \&"\"
+.el .ds rq \(rq\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+.I Ctime
+converts a long integer, pointed to by
+.IR clock ,
+and returns a pointer to a
+string of the form
+.br
+.ce
+.eo
+Thu Nov 24 18:22:48 1986\n\0
+.br
+.ec
+Years requiring fewer than four characters are padded with leading zeroes.
+For years longer than four characters, the string is of the form
+.br
+.ce
+.eo
+Thu Nov 24 18:22:48 81986\n\0
+.ec
+.br
+with five spaces before the year.
+These unusual formats are designed to make it less likely that older
+software that expects exactly 26 bytes of output will mistakenly output
+misleading values for out-of-range years.
+.PP
+The
+.BI * clock
+time stamp represents the time in seconds since 1970-01-01 00:00:00
+Coordinated Universal Time (UTC).
+The POSIX standard says that time stamps must be nonnegative
+and must ignore leap seconds.
+Many implementations extend POSIX by allowing negative time stamps,
+and can therefore represent time stamps that predate the
+introduction of UTC and are some other flavor of Universal Time (UT).
+Some implementations support leap seconds, in contradiction to POSIX.
+.PP
+.I Localtime
+and
+.I gmtime
+return pointers to
+.q "tm"
+structures, described below.
+.I Localtime
+corrects for the time zone and any time zone adjustments
+(such as Daylight Saving Time in the United States).
+After filling in the
+.q "tm"
+structure,
+.I localtime
+sets the
+.BR tm_isdst 'th
+element of
+.B tzname
+to a pointer to a string that's the time zone abbreviation to be used with
+.IR localtime 's
+return value.
+.PP
+.I Gmtime
+converts to Coordinated Universal Time.
+.PP
+.I Asctime
+converts a time value contained in a
+.q "tm"
+structure to a string,
+as shown in the above example,
+and returns a pointer to the string.
+.PP
+.I Mktime
+converts the broken-down time,
+expressed as local time,
+in the structure pointed to by
+.I tm
+into a calendar time value with the same encoding as that of the values
+returned by the
+.I time
+function.
+The original values of the
+.B tm_wday
+and
+.B tm_yday
+components of the structure are ignored,
+and the original values of the other components are not restricted
+to their normal ranges.
+(A positive or zero value for
+.B tm_isdst
+causes
+.I mktime
+to presume initially that summer time (for example, Daylight Saving Time
+in the U.S.A.)
+respectively,
+is or is not in effect for the specified time.
+A negative value for
+.B tm_isdst
+causes the
+.I mktime
+function to attempt to divine whether summer time is in effect
+for the specified time; in this case it does not use a consistent
+rule and may give a different answer when later
+presented with the same argument.)
+On successful completion, the values of the
+.B tm_wday
+and
+.B tm_yday
+components of the structure are set appropriately,
+and the other components are set to represent the specified calendar time,
+but with their values forced to their normal ranges; the final value of
+.B tm_mday
+is not set until
+.B tm_mon
+and
+.B tm_year
+are determined.
+.I Mktime
+returns the specified calendar time;
+If the calendar time cannot be represented,
+it returns \-1.
+.PP
+.I Difftime
+returns the difference between two calendar times,
+.RI ( time1
+\-
+.IR time0 ),
+expressed in seconds.
+.PP
+.IR Ctime_r ,
+.IR localtime_r ,
+.IR gmtime_r ,
+and
+.I asctime_r
+are like their unsuffixed counterparts, except that they accept an
+additional argument specifying where to store the result if successful.
+.PP
+.IR Localtime_rz
+and
+.I mktime_z
+are like their unsuffixed counterparts, except that they accept an
+extra initial
+.B zone
+argument specifying the time zone to be used for conversion.
+If
+.B zone
+is null, UTC is used; otherwise,
+.B zone
+should be have been allocated by
+.I tzalloc
+and should not be freed until after all uses (e.g., by calls to
+.IR strftime )
+of the filled-in
+.B tm_zone
+fields.
+.PP
+Declarations of all the functions and externals, and the
+.q "tm"
+structure,
+are in the
+.B <time.h>
+header file.
+The structure (of type)
+.B struct tm
+includes the following fields:
+.RS
+.PP
+.nf
+.ta .5i +\w'long tm_gmtoff;\0\0'u
+ int tm_sec; /\(** seconds (0\*(en60) \(**/
+ int tm_min; /\(** minutes (0\*(en59) \(**/
+ int tm_hour; /\(** hours (0\*(en23) \(**/
+ int tm_mday; /\(** day of month (1\*(en31) \(**/
+ int tm_mon; /\(** month of year (0\*(en11) \(**/
+ int tm_year; /\(** year \- 1900 \(**/
+ int tm_wday; /\(** day of week (Sunday = 0) \(**/
+ int tm_yday; /\(** day of year (0\*(en365) \(**/
+ int tm_isdst; /\(** is summer time in effect? \(**/
+ char \(**tm_zone; /\(** abbreviation of time zone name \(**/
+ long tm_gmtoff; /\(** offset from UT in seconds \(**/
+.fi
+.RE
+.PP
+The
+.I tm_zone
+and
+.I tm_gmtoff
+fields exist, and are filled in, only if arrangements to do
+so were made when the library containing these functions was
+created.
+There is no guarantee that these fields will continue to exist
+in this form in future releases of this code.
+.PP
+.I Tm_isdst
+is non-zero if summer time is in effect.
+.PP
+.I Tm_gmtoff
+is the offset (in seconds) of the time represented
+from UT, with positive values indicating east
+of the Prime Meridian.
+The field's name is derived from Greenwich Mean Time, a precursor of UT.
+.SH FILES
+.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
+/usr/local/etc/zoneinfo time zone information directory
+.br
+/usr/local/etc/zoneinfo/localtime local time zone file
+.br
+/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+.br
+/usr/local/etc/zoneinfo/GMT for UTC leap seconds
+.sp
+If
+.B /usr/local/etc/zoneinfo/GMT
+is absent,
+UTC leap seconds are loaded from
+.BR /usr/local/etc/zoneinfo/posixrules .
+.SH SEE ALSO
+getenv(3),
+newstrftime(3),
+newtzset(3),
+time(2),
+tzfile(5)
+.SH NOTES
+The return values of
+.IR asctime ,
+.IR ctime ,
+.IR gmtime ,
+and
+.I localtime
+point to static data
+overwritten by each call.
+The
+.B tm_zone
+field of a returned
+.B "struct tm"
+points to a static array of characters, which
+can be overwritten by later calls to
+.IR tzset .
+The remaining functions and data are thread-safe.
+.PP
+.IR Asctime ,
+.IR asctime_r ,
+.IR ctime ,
+and
+.I ctime_r
+behave strangely for years before 1000 or after 9999.
+The 1989 and 1999 editions of the C Standard say
+that years from \-99 through 999 are converted without
+extra spaces, but this conflicts with longstanding
+tradition and with this implementation.
+The 2011 edition says that the behavior
+is undefined if the year is before 1000 or after 9999.
+Traditional implementations of these two functions are
+restricted to years in the range 1900 through 2099.
+To avoid this portability mess, new programs should use
+.I strftime
+instead.
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/newctime.3.txt
===================================================================
--- vendor/tzcode/dist/newctime.3.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newctime.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,142 +0,0 @@
-NEWCTIME(3) NEWCTIME(3)
-
-NAME
- asctime, ctime, difftime, gmtime, localtime, mktime - convert date and
- time to ASCII
-
-SYNOPSIS
- extern char *tzname[2];
-
- void tzset()
-
- #include <sys/types.h>
-
- char *ctime(clock)
- const time_t *clock;
-
- double difftime(time1, time0)
- time_t time1;
- time_t time0;
-
- #include <time.h>
-
- char *asctime(tm)
- const struct tm *tm;
-
- struct tm *localtime(clock)
- const time_t *clock;
-
- struct tm *gmtime(clock)
- const time_t *clock;
-
- time_t mktime(tm)
- struct tm *tm;
-
- cc ... -ltz
-
-DESCRIPTION
- Ctime converts a long integer, pointed to by clock, representing the
- time in seconds since 00:00:00 UTC, 1970-01-01, and returns a pointer
- to a string of the form
- Thu Nov 24 18:22:48 1986\n\0
- Years requiring fewer than four characters are padded with leading
- zeroes. For years longer than four characters, the string is of the
- form
- Thu Nov 24 18:22:48 81986\n\0
- with five spaces before the year. These unusual formats are designed
- to make it less likely that older software that expects exactly 26
- bytes of output will mistakenly output misleading values for out-of-
- range years.
-
- Localtime and gmtime return pointers to ``tm'' structures, described
- below. Localtime corrects for the time zone and any time zone
- adjustments (such as Daylight Saving Time in the United States). After
- filling in the ``tm'' structure, localtime sets the tm_isdst'th element
- of tzname to a pointer to an ASCII string that's the time zone
- abbreviation to be used with localtime's return value.
-
- Gmtime converts to Coordinated Universal Time.
-
- Asctime converts a time value contained in a ``tm'' structure to a
- string, as shown in the above example, and returns a pointer to the
- string.
-
- Mktime converts the broken-down time, expressed as local time, in the
- structure pointed to by tm into a calendar time value with the same
- encoding as that of the values returned by the time function. The
- original values of the tm_wday and tm_yday components of the structure
- are ignored, and the original values of the other components are not
- restricted to their normal ranges. (A positive or zero value for
- tm_isdst causes mktime to presume initially that summer time (for
- example, Daylight Saving Time in the U.S.A.) respectively, is or is
- not in effect for the specified time. A negative value for tm_isdst
- causes the mktime function to attempt to divine whether summer time is
- in effect for the specified time; in this case it does not use a
- consistent rule and may give a different answer when later presented
- with the same argument.) On successful completion, the values of the
- tm_wday and tm_yday components of the structure are set appropriately,
- and the other components are set to represent the specified calendar
- time, but with their values forced to their normal ranges; the final
- value of tm_mday is not set until tm_mon and tm_year are determined.
- Mktime returns the specified calendar time; If the calendar time cannot
- be represented, it returns -1.
-
- Difftime returns the difference between two calendar times, (time1 -
- time0), expressed in seconds.
-
- Declarations of all the functions and externals, and the ``tm''
- structure, are in the <time.h> header file. The structure (of type)
- struct tm includes the following fields:
-
- int tm_sec; /* seconds (0 - 60) */
- int tm_min; /* minutes (0 - 59) */
- int tm_hour; /* hours (0 - 23) */
- int tm_mday; /* day of month (1 - 31) */
- int tm_mon; /* month of year (0 - 11) */
- int tm_year; /* year - 1900 */
- int tm_wday; /* day of week (Sunday = 0) */
- int tm_yday; /* day of year (0 - 365) */
- int tm_isdst; /* is summer time in effect? */
- char *tm_zone; /* abbreviation of timezone name */
- long tm_gmtoff; /* offset from UTC in seconds */
-
- The tm_zone and tm_gmtoff fields exist, and are filled in, only if
- arrangements to do so were made when the library containing these
- functions was created. There is no guarantee that these fields will
- continue to exist in this form in future releases of this code.
-
- Tm_isdst is non-zero if summer time is in effect.
-
- Tm_gmtoff is the offset (in seconds) of the time represented from UTC,
- with positive values indicating east of the Prime Meridian.
-
-FILES
- /usr/local/etc/zoneinfo time zone information directory
- /usr/local/etc/zoneinfo/localtime local time zone file
- /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
- /usr/local/etc/zoneinfo/GMT for UTC leap seconds
-
- If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
- from /usr/local/etc/zoneinfo/posixrules.
-
-SEE ALSO
- getenv(3), newstrftime(3), newtzset(3), time(2), tzfile(5)
-
-NOTES
- The return values point to static data; the data is overwritten by each
- call. The tm_zone field of a returned struct tm points to a static
- array of characters, which will also be overwritten at the next call
- (and by calls to tzset).
-
- Asctime and ctime behave strangely for years before 1000 or after 9999.
- The 1989 and 1999 editions of the C Standard say that years from -99
- through 999 are converted without extra spaces, but this conflicts with
- longstanding tradition and with this implementation. Traditional
- implementations of these two functions are restricted to years in the
- range 1900 through 2099. To avoid this portability mess, new programs
- should use strftime instead.
-
- Avoid using out-of-range values with mktime when setting up lunch with
- promptness sticklers in Riyadh.
-
- NEWCTIME(3)
Copied: vendor/tzcode/2016f/newctime.3.txt (from rev 7736, vendor/tzcode/dist/newctime.3.txt)
===================================================================
--- vendor/tzcode/2016f/newctime.3.txt (rev 0)
+++ vendor/tzcode/2016f/newctime.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,168 @@
+NEWCTIME(3) Library Functions Manual NEWCTIME(3)
+
+NAME
+ asctime, ctime, difftime, gmtime, localtime, mktime - convert date and
+ time
+
+SYNOPSIS
+ #include <time.h>
+
+ extern char *tzname[2];
+
+ char *ctime(time_t const *clock);
+
+ char *ctime_r(time_t const *clock, char *buf);
+
+ double difftime(time_t time1, time_t time0);
+
+ char *asctime(struct tm const *tm);
+
+ char *asctime_r(struct tm const *restrict tm,
+ char *restrict result);
+
+ struct tm *localtime(time_t const *clock);
+
+ struct tm *localtime_r(time_t const *restrict clock,
+ struct tm *restrict result);
+
+ struct tm *localtime_rz(timezone_t restrict zone,
+ time_t const *restrict clock,
+ struct tm *restrict result);
+
+ struct tm *gmtime(time_t const *clock);
+
+ struct tm *gmtime_r(time_t const *restrict clock,
+ struct tm *restrict result);
+
+ time_t mktime(struct tm *tm);
+
+ time_t mktime_z(timezone_t restrict zone,
+ struct tm *restrict tm);
+
+ cc ... -ltz
+
+DESCRIPTION
+ Ctime converts a long integer, pointed to by clock, and returns a
+ pointer to a string of the form
+ Thu Nov 24 18:22:48 1986\n\0
+ Years requiring fewer than four characters are padded with leading
+ zeroes. For years longer than four characters, the string is of the
+ form
+ Thu Nov 24 18:22:48 81986\n\0
+ with five spaces before the year. These unusual formats are designed
+ to make it less likely that older software that expects exactly 26
+ bytes of output will mistakenly output misleading values for out-of-
+ range years.
+
+ The *clock time stamp represents the time in seconds since 1970-01-01
+ 00:00:00 Coordinated Universal Time (UTC). The POSIX standard says
+ that time stamps must be nonnegative and must ignore leap seconds.
+ Many implementations extend POSIX by allowing negative time stamps, and
+ can therefore represent time stamps that predate the introduction of
+ UTC and are some other flavor of Universal Time (UT). Some
+ implementations support leap seconds, in contradiction to POSIX.
+
+ Localtime and gmtime return pointers to "tm" structures, described
+ below. Localtime corrects for the time zone and any time zone
+ adjustments (such as Daylight Saving Time in the United States). After
+ filling in the "tm" structure, localtime sets the tm_isdst'th element
+ of tzname to a pointer to a string that's the time zone abbreviation to
+ be used with localtime's return value.
+
+ Gmtime converts to Coordinated Universal Time.
+
+ Asctime converts a time value contained in a "tm" structure to a
+ string, as shown in the above example, and returns a pointer to the
+ string.
+
+ Mktime converts the broken-down time, expressed as local time, in the
+ structure pointed to by tm into a calendar time value with the same
+ encoding as that of the values returned by the time function. The
+ original values of the tm_wday and tm_yday components of the structure
+ are ignored, and the original values of the other components are not
+ restricted to their normal ranges. (A positive or zero value for
+ tm_isdst causes mktime to presume initially that summer time (for
+ example, Daylight Saving Time in the U.S.A.) respectively, is or is
+ not in effect for the specified time. A negative value for tm_isdst
+ causes the mktime function to attempt to divine whether summer time is
+ in effect for the specified time; in this case it does not use a
+ consistent rule and may give a different answer when later presented
+ with the same argument.) On successful completion, the values of the
+ tm_wday and tm_yday components of the structure are set appropriately,
+ and the other components are set to represent the specified calendar
+ time, but with their values forced to their normal ranges; the final
+ value of tm_mday is not set until tm_mon and tm_year are determined.
+ Mktime returns the specified calendar time; If the calendar time cannot
+ be represented, it returns -1.
+
+ Difftime returns the difference between two calendar times, (time1 -
+ time0), expressed in seconds.
+
+ Ctime_r, localtime_r, gmtime_r, and asctime_r are like their unsuffixed
+ counterparts, except that they accept an additional argument specifying
+ where to store the result if successful.
+
+ Localtime_rz and mktime_z are like their unsuffixed counterparts,
+ except that they accept an extra initial zone argument specifying the
+ time zone to be used for conversion. If zone is null, UTC is used;
+ otherwise, zone should be have been allocated by tzalloc and should not
+ be freed until after all uses (e.g., by calls to strftime) of the
+ filled-in tm_zone fields.
+
+ Declarations of all the functions and externals, and the "tm"
+ structure, are in the <time.h> header file. The structure (of type)
+ struct tm includes the following fields:
+
+ int tm_sec; /* seconds (0-60) */
+ int tm_min; /* minutes (0-59) */
+ int tm_hour; /* hours (0-23) */
+ int tm_mday; /* day of month (1-31) */
+ int tm_mon; /* month of year (0-11) */
+ int tm_year; /* year - 1900 */
+ int tm_wday; /* day of week (Sunday = 0) */
+ int tm_yday; /* day of year (0-365) */
+ int tm_isdst; /* is summer time in effect? */
+ char *tm_zone; /* abbreviation of time zone name */
+ long tm_gmtoff; /* offset from UT in seconds */
+
+ The tm_zone and tm_gmtoff fields exist, and are filled in, only if
+ arrangements to do so were made when the library containing these
+ functions was created. There is no guarantee that these fields will
+ continue to exist in this form in future releases of this code.
+
+ Tm_isdst is non-zero if summer time is in effect.
+
+ Tm_gmtoff is the offset (in seconds) of the time represented from UT,
+ with positive values indicating east of the Prime Meridian. The
+ field's name is derived from Greenwich Mean Time, a precursor of UT.
+
+FILES
+ /usr/local/etc/zoneinfo time zone information directory
+ /usr/local/etc/zoneinfo/localtime local time zone file
+ /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+ /usr/local/etc/zoneinfo/GMT for UTC leap seconds
+
+ If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
+ from /usr/local/etc/zoneinfo/posixrules.
+
+SEE ALSO
+ getenv(3), newstrftime(3), newtzset(3), time(2), tzfile(5)
+
+NOTES
+ The return values of asctime, ctime, gmtime, and localtime point to
+ static data overwritten by each call. The tm_zone field of a returned
+ struct tm points to a static array of characters, which can be
+ overwritten by later calls to tzset. The remaining functions and data
+ are thread-safe.
+
+ Asctime, asctime_r, ctime, and ctime_r behave strangely for years
+ before 1000 or after 9999. The 1989 and 1999 editions of the C
+ Standard say that years from -99 through 999 are converted without
+ extra spaces, but this conflicts with longstanding tradition and with
+ this implementation. The 2011 edition says that the behavior is
+ undefined if the year is before 1000 or after 9999. Traditional
+ implementations of these two functions are restricted to years in the
+ range 1900 through 2099. To avoid this portability mess, new programs
+ should use strftime instead.
+
+ NEWCTIME(3)
Deleted: vendor/tzcode/2016f/newstrftime.3
===================================================================
--- vendor/tzcode/dist/newstrftime.3 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newstrftime.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,229 +0,0 @@
-.\" Based on the UCB file whose copyright information appears below.
-.\" Copyright (c) 1989, 1991 The Regents of the University of California.
-.\" All rights reserved.
-.\"
-.\" This code is derived from software contributed to Berkeley by
-.\" the American National Standards Committee X3, on Information
-.\" Processing Systems.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" from: @(#)strftime.3 5.12 (Berkeley) 6/29/91
-.\" $Id: newstrftime.3,v 1.1.1.1 2012-12-02 00:08:52 laffer1 Exp $
-.\"
-.TH NEWSTRFTIME 3
-.SH NAME
-strftime \- format date and time
-.SH SYNOPSIS
-.nf
-.B #include <sys/types.h>
-.B #include <time.h>
-.PP
-.B size_t strftime(buf, maxsize, format, timeptr)
-.B char *buf;
-.B size_t maxsize;
-.B const char *format;
-.B const struct tm *timeptr
-.PP
-.B cc ... -ltz
-.fi
-.SH DESCRIPTION
-The
-.I strftime\^
-function formats the information from
-.I timeptr\^
-into the buffer
-.I buf\^
-according to the string pointed to by
-.IR format\^ .
-.PP
-The
-.I format\^
-string consists of zero or more conversion specifications and
-ordinary characters.
-All ordinary characters are copied directly into the buffer.
-A conversion specification consists of a percent sign
-.Ql %
-and one other character.
-.PP
-No more than
-.I maxsize\^
-characters are be placed into the array.
-If the total number of resulting characters, including the terminating
-null character, is not more than
-.IR maxsize\^ ,
-.I strftime\^
-returns the number of characters in the array, not counting the
-terminating null.
-Otherwise, zero is returned.
-.PP
-Each conversion specification is replaced by the characters as
-follows which are then copied into the buffer.
-.TP
-%A
-is replaced by the locale's full weekday name.
-.TP
-%a
-is replaced by the locale's abbreviated weekday name.
-.TP
-%B
-is replaced by the locale's full month name.
-.TP
-%b or %h
-is replaced by the locale's abbreviated month name.
-.TP
-%C
-is replaced by the century (a year divided by 100 and truncated to an integer)
-as a decimal number (00-99).
-.TP
-%c
-is replaced by the locale's appropriate date and time representation.
-.TP
-%D
-is replaced by the date in the format %m/%d/%y.
-.TP
-%d
-is replaced by the day of the month as a decimal number (01-31).
-.TP
-%e
-is replaced by the day of month as a decimal number (1-31);
-single digits are preceded by a blank.
-.TP
-%F
-is replaced by the date in the format %Y-%m-%d.
-.TP
-%G
-is replaced by the ISO 8601 year with century as a decimal number.
-.TP
-%g
-is replaced by the ISO 8601 year without century as a decimal number (00-99).
-.TP
-%H
-is replaced by the hour (24-hour clock) as a decimal number (00-23).
-.TP
-%I
-is replaced by the hour (12-hour clock) as a decimal number (01-12).
-.TP
-%j
-is replaced by the day of the year as a decimal number (001-366).
-.TP
-%k
-is replaced by the hour (24-hour clock) as a decimal number (0-23);
-single digits are preceded by a blank.
-.TP
-%l
-is replaced by the hour (12-hour clock) as a decimal number (1-12);
-single digits are preceded by a blank.
-.TP
-%M
-is replaced by the minute as a decimal number (00-59).
-.TP
-%m
-is replaced by the month as a decimal number (01-12).
-.TP
-%n
-is replaced by a newline.
-.TP
-%p
-is replaced by the locale's equivalent of either AM or PM.
-.TP
-%R
-is replaced by the time in the format %H:%M.
-.TP
-%r
-is replaced by the locale's representation of 12-hour clock time
-using AM/PM notation.
-.TP
-%S
-is replaced by the second as a decimal number (00-60).
-.TP
-%s
-is replaced by the number of seconds since the Epoch, UTC (see mktime(3)).
-.TP
-%T
-is replaced by the time in the format %H:%M:%S.
-.TP
-%t
-is replaced by a tab.
-.TP
-%U
-is replaced by the week number of the year (Sunday as the first day of
-the week) as a decimal number (00-53).
-.TP
-%u
-is replaced by the weekday (Monday as the first day of the week)
-as a decimal number (1-7).
-.TP
-%V
-is replaced by the week number of the year (Monday as the first day of
-the week) as a decimal number (01-53). If the week containing January
-1 has four or more days in the new year, then it is week 1; otherwise
-it is week 53 of the previous year, and the next week is week 1.
-.TP
-%W
-is replaced by the week number of the year (Monday as the first day of
-the week) as a decimal number (00-53).
-.TP
-%w
-is replaced by the weekday (Sunday as the first day of the week)
-as a decimal number (0-6).
-.TP
-%X
-is replaced by the locale's appropriate time representation.
-.TP
-%x
-is replaced by the locale's appropriate date representation.
-.TP
-%Y
-is replaced by the year with century as a decimal number.
-.TP
-%y
-is replaced by the year without century as a decimal number (00-99).
-.TP
-%Z
-is replaced by the time zone name,
-or by the empty string if this is not determinable.
-.TP
-%z
-is replaced by the offset from UTC in the format +HHMM or -HHMM as appropriate,
-with positive values representing locations east of Greenwich,
-or by the empty string if this is not determinable.
-.TP
-%%
-is replaced by a single %.
-.TP
-%+
-is replaced by the date and time in date(1) format.
-.SH SEE ALSO
-date(1),
-getenv(3),
-newctime(3),
-newtzset(3),
-time(2),
-tzfile(5)
Copied: vendor/tzcode/2016f/newstrftime.3 (from rev 7736, vendor/tzcode/dist/newstrftime.3)
===================================================================
--- vendor/tzcode/2016f/newstrftime.3 (rev 0)
+++ vendor/tzcode/2016f/newstrftime.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,226 @@
+.\" Based on the UCB file whose copyright information appears below.
+.\" Copyright (c) 1989, 1991 The Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the American National Standards Committee X3, on Information
+.\" Processing Systems.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" from: @(#)strftime.3 5.12 (Berkeley) 6/29/91
+.\" $Id: strftime.3,v 1.4 1993/12/15 20:33:00 jtc Exp $
+.\"
+.TH NEWSTRFTIME 3
+.SH NAME
+strftime \- format date and time
+.SH SYNOPSIS
+.nf
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B #include <time.h>
+.PP
+.B "size_t strftime(char *restrict buf, size_t maxsize,"
+.B " char const *restrict format, struct tm const *restrict timeptr);"
+.PP
+.B cc ... \-ltz
+.fi
+.SH DESCRIPTION
+.ie '\(en'' .ds en \-
+.el .ds en \(en
+The
+.I strftime
+function formats the information from
+.I timeptr
+into the buffer
+.I buf
+according to the string pointed to by
+.IR format .
+.PP
+The
+.I format
+string consists of zero or more conversion specifications and
+ordinary characters.
+All ordinary characters are copied directly into the buffer.
+A conversion specification consists of a percent sign
+.Ql %
+and one other character.
+.PP
+No more than
+.I maxsize
+characters are placed into the array.
+If the total number of resulting characters, including the terminating
+null character, is not more than
+.IR maxsize ,
+.I strftime
+returns the number of characters in the array, not counting the
+terminating null.
+Otherwise, zero is returned.
+.PP
+Each conversion specification is replaced by the characters as
+follows which are then copied into the buffer.
+.TP
+%A
+is replaced by the locale's full weekday name.
+.TP
+%a
+is replaced by the locale's abbreviated weekday name.
+.TP
+%B
+is replaced by the locale's full month name.
+.TP
+%b or %h
+is replaced by the locale's abbreviated month name.
+.TP
+%C
+is replaced by the century (a year divided by 100 and truncated to an integer)
+as a decimal number (00\*(en99).
+.TP
+%c
+is replaced by the locale's appropriate date and time representation.
+.TP
+%D
+is replaced by the date in the format %m/%d/%y.
+.TP
+%d
+is replaced by the day of the month as a decimal number (01\*(en31).
+.TP
+%e
+is replaced by the day of month as a decimal number (1\*(en31);
+single digits are preceded by a blank.
+.TP
+%F
+is replaced by the date in the format %Y\*-%m\*-%d.
+.TP
+%G
+is replaced by the ISO 8601 year with century as a decimal number.
+.TP
+%g
+is replaced by the ISO 8601 year without century as a decimal number (00\*(en99).
+.TP
+%H
+is replaced by the hour (24-hour clock) as a decimal number (00\*(en23).
+.TP
+%I
+is replaced by the hour (12-hour clock) as a decimal number (01\*(en12).
+.TP
+%j
+is replaced by the day of the year as a decimal number (001\*(en366).
+.TP
+%k
+is replaced by the hour (24-hour clock) as a decimal number (0\*(en23);
+single digits are preceded by a blank.
+.TP
+%l
+is replaced by the hour (12-hour clock) as a decimal number (1\*(en12);
+single digits are preceded by a blank.
+.TP
+%M
+is replaced by the minute as a decimal number (00\*(en59).
+.TP
+%m
+is replaced by the month as a decimal number (01\*(en12).
+.TP
+%n
+is replaced by a newline.
+.TP
+%p
+is replaced by the locale's equivalent of either AM or PM.
+.TP
+%R
+is replaced by the time in the format %H:%M.
+.TP
+%r
+is replaced by the locale's representation of 12-hour clock time
+using AM/PM notation.
+.TP
+%S
+is replaced by the second as a decimal number (00\*(en60).
+.TP
+%s
+is replaced by the number of seconds since the Epoch (see newctime(3)).
+.TP
+%T
+is replaced by the time in the format %H:%M:%S.
+.TP
+%t
+is replaced by a tab.
+.TP
+%U
+is replaced by the week number of the year (Sunday as the first day of
+the week) as a decimal number (00\*(en53).
+.TP
+%u
+is replaced by the weekday (Monday as the first day of the week)
+as a decimal number (1\*(en7).
+.TP
+%V
+is replaced by the week number of the year (Monday as the first day of
+the week) as a decimal number (01\*(en53). If the week containing January
+1 has four or more days in the new year, then it is week 1; otherwise
+it is week 53 of the previous year, and the next week is week 1.
+.TP
+%W
+is replaced by the week number of the year (Monday as the first day of
+the week) as a decimal number (00\*(en53).
+.TP
+%w
+is replaced by the weekday (Sunday as the first day of the week)
+as a decimal number (0\*(en6).
+.TP
+%X
+is replaced by the locale's appropriate time representation.
+.TP
+%x
+is replaced by the locale's appropriate date representation.
+.TP
+%Y
+is replaced by the year with century as a decimal number.
+.TP
+%y
+is replaced by the year without century as a decimal number (00\*(en99).
+.TP
+%Z
+is replaced by the time zone name,
+or by the empty string if this is not determinable.
+.TP
+%z
+is replaced by the offset from the Prime Meridian
+in the format +HHMM or \*-HHMM as appropriate,
+with positive values representing locations east of Greenwich,
+or by the empty string if this is not determinable.
+.TP
+%%
+is replaced by a single %.
+.TP
+%+
+is replaced by the date and time in date(1) format.
+.SH SEE ALSO
+date(1),
+getenv(3),
+newctime(3),
+newtzset(3),
+time(2),
+tzfile(5)
Deleted: vendor/tzcode/2016f/newstrftime.3.txt
===================================================================
--- vendor/tzcode/dist/newstrftime.3.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newstrftime.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,145 +0,0 @@
-NEWSTRFTIME(3) NEWSTRFTIME(3)
-
-NAME
- strftime - format date and time
-
-SYNOPSIS
- #include <sys/types.h>
- #include <time.h>
-
- size_t strftime(buf, maxsize, format, timeptr)
- char *buf;
- size_t maxsize;
- const char *format;
- const struct tm *timeptr
-
- cc ... -ltz
-
-DESCRIPTION
- The strftime function formats the information from timeptr into the
- buffer buf according to the string pointed to by format.
-
- The format string consists of zero or more conversion specifications
- and ordinary characters. All ordinary characters are copied directly
- into the buffer. A conversion specification consists of a percent sign
- and one other character.
-
- No more than maxsize characters are be placed into the array. If the
- total number of resulting characters, including the terminating null
- character, is not more than maxsize, strftime returns the number of
- characters in the array, not counting the terminating null. Otherwise,
- zero is returned.
-
- Each conversion specification is replaced by the characters as follows
- which are then copied into the buffer.
-
- %A is replaced by the locale's full weekday name.
-
- %a is replaced by the locale's abbreviated weekday name.
-
- %B is replaced by the locale's full month name.
-
- %b or %h
- is replaced by the locale's abbreviated month name.
-
- %C is replaced by the century (a year divided by 100 and truncated
- to an integer) as a decimal number (00-99).
-
- %c is replaced by the locale's appropriate date and time
- representation.
-
- %D is replaced by the date in the format %m/%d/%y.
-
- %d is replaced by the day of the month as a decimal number (01-31).
-
- %e is replaced by the day of month as a decimal number (1-31);
- single digits are preceded by a blank.
-
- %F is replaced by the date in the format %Y-%m-%d.
-
- %G is replaced by the ISO 8601 year with century as a decimal
- number.
-
- %g is replaced by the ISO 8601 year without century as a decimal
- number (00-99).
-
- %H is replaced by the hour (24-hour clock) as a decimal number
- (00-23).
-
- %I is replaced by the hour (12-hour clock) as a decimal number
- (01-12).
-
- %j is replaced by the day of the year as a decimal number
- (001-366).
-
- %k is replaced by the hour (24-hour clock) as a decimal number
- (0-23); single digits are preceded by a blank.
-
- %l is replaced by the hour (12-hour clock) as a decimal number
- (1-12); single digits are preceded by a blank.
-
- %M is replaced by the minute as a decimal number (00-59).
-
- %m is replaced by the month as a decimal number (01-12).
-
- %n is replaced by a newline.
-
- %p is replaced by the locale's equivalent of either AM or PM.
-
- %R is replaced by the time in the format %H:%M.
-
- %r is replaced by the locale's representation of 12-hour clock time
- using AM/PM notation.
-
- %S is replaced by the second as a decimal number (00-60).
-
- %s is replaced by the number of seconds since the Epoch, UTC (see
- mktime(3)).
-
- %T is replaced by the time in the format %H:%M:%S.
-
- %t is replaced by a tab.
-
- %U is replaced by the week number of the year (Sunday as the first
- day of the week) as a decimal number (00-53).
-
- %u is replaced by the weekday (Monday as the first day of the week)
- as a decimal number (1-7).
-
- %V is replaced by the week number of the year (Monday as the first
- day of the week) as a decimal number (01-53). If the week
- containing January 1 has four or more days in the new year, then
- it is week 1; otherwise it is week 53 of the previous year, and
- the next week is week 1.
-
- %W is replaced by the week number of the year (Monday as the first
- day of the week) as a decimal number (00-53).
-
- %w is replaced by the weekday (Sunday as the first day of the week)
- as a decimal number (0-6).
-
- %X is replaced by the locale's appropriate time representation.
-
- %x is replaced by the locale's appropriate date representation.
-
- %Y is replaced by the year with century as a decimal number.
-
- %y is replaced by the year without century as a decimal number
- (00-99).
-
- %Z is replaced by the time zone name, or by the empty string if
- this is not determinable.
-
- %z is replaced by the offset from UTC in the format +HHMM or -HHMM
- as appropriate, with positive values representing locations east
- of Greenwich, or by the empty string if this is not
- determinable.
-
- %% is replaced by a single %.
-
- %+ is replaced by the date and time in date(1) format.
-
-SEE ALSO
- date(1), getenv(3), newctime(3), newtzset(3), time(2), tzfile(5)
-
- NEWSTRFTIME(3)
Copied: vendor/tzcode/2016f/newstrftime.3.txt (from rev 7736, vendor/tzcode/dist/newstrftime.3.txt)
===================================================================
--- vendor/tzcode/2016f/newstrftime.3.txt (rev 0)
+++ vendor/tzcode/2016f/newstrftime.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,141 @@
+NEWSTRFTIME(3) Library Functions Manual NEWSTRFTIME(3)
+
+NAME
+ strftime - format date and time
+
+SYNOPSIS
+ #include <time.h>
+
+ size_t strftime(char *restrict buf, size_t maxsize,
+ char const *restrict format, struct tm const *restrict timeptr);
+
+ cc ... -ltz
+
+DESCRIPTION
+ The strftime function formats the information from timeptr into the
+ buffer buf according to the string pointed to by format.
+
+ The format string consists of zero or more conversion specifications
+ and ordinary characters. All ordinary characters are copied directly
+ into the buffer. A conversion specification consists of a percent sign
+ and one other character.
+
+ No more than maxsize characters are placed into the array. If the
+ total number of resulting characters, including the terminating null
+ character, is not more than maxsize, strftime returns the number of
+ characters in the array, not counting the terminating null. Otherwise,
+ zero is returned.
+
+ Each conversion specification is replaced by the characters as follows
+ which are then copied into the buffer.
+
+ %A is replaced by the locale's full weekday name.
+
+ %a is replaced by the locale's abbreviated weekday name.
+
+ %B is replaced by the locale's full month name.
+
+ %b or %h
+ is replaced by the locale's abbreviated month name.
+
+ %C is replaced by the century (a year divided by 100 and truncated
+ to an integer) as a decimal number (00-99).
+
+ %c is replaced by the locale's appropriate date and time
+ representation.
+
+ %D is replaced by the date in the format %m/%d/%y.
+
+ %d is replaced by the day of the month as a decimal number (01-31).
+
+ %e is replaced by the day of month as a decimal number (1-31);
+ single digits are preceded by a blank.
+
+ %F is replaced by the date in the format %Y-%m-%d.
+
+ %G is replaced by the ISO 8601 year with century as a decimal
+ number.
+
+ %g is replaced by the ISO 8601 year without century as a decimal
+ number (00-99).
+
+ %H is replaced by the hour (24-hour clock) as a decimal number
+ (00-23).
+
+ %I is replaced by the hour (12-hour clock) as a decimal number
+ (01-12).
+
+ %j is replaced by the day of the year as a decimal number
+ (001-366).
+
+ %k is replaced by the hour (24-hour clock) as a decimal number
+ (0-23); single digits are preceded by a blank.
+
+ %l is replaced by the hour (12-hour clock) as a decimal number
+ (1-12); single digits are preceded by a blank.
+
+ %M is replaced by the minute as a decimal number (00-59).
+
+ %m is replaced by the month as a decimal number (01-12).
+
+ %n is replaced by a newline.
+
+ %p is replaced by the locale's equivalent of either AM or PM.
+
+ %R is replaced by the time in the format %H:%M.
+
+ %r is replaced by the locale's representation of 12-hour clock time
+ using AM/PM notation.
+
+ %S is replaced by the second as a decimal number (00-60).
+
+ %s is replaced by the number of seconds since the Epoch (see
+ newctime(3)).
+
+ %T is replaced by the time in the format %H:%M:%S.
+
+ %t is replaced by a tab.
+
+ %U is replaced by the week number of the year (Sunday as the first
+ day of the week) as a decimal number (00-53).
+
+ %u is replaced by the weekday (Monday as the first day of the week)
+ as a decimal number (1-7).
+
+ %V is replaced by the week number of the year (Monday as the first
+ day of the week) as a decimal number (01-53). If the week
+ containing January 1 has four or more days in the new year, then
+ it is week 1; otherwise it is week 53 of the previous year, and
+ the next week is week 1.
+
+ %W is replaced by the week number of the year (Monday as the first
+ day of the week) as a decimal number (00-53).
+
+ %w is replaced by the weekday (Sunday as the first day of the week)
+ as a decimal number (0-6).
+
+ %X is replaced by the locale's appropriate time representation.
+
+ %x is replaced by the locale's appropriate date representation.
+
+ %Y is replaced by the year with century as a decimal number.
+
+ %y is replaced by the year without century as a decimal number
+ (00-99).
+
+ %Z is replaced by the time zone name, or by the empty string if
+ this is not determinable.
+
+ %z is replaced by the offset from the Prime Meridian in the format
+ +HHMM or -HHMM as appropriate, with positive values representing
+ locations east of Greenwich, or by the empty string if this is
+ not determinable.
+
+ %% is replaced by a single %.
+
+ %+ is replaced by the date and time in date(1) format.
+
+SEE ALSO
+ date(1), getenv(3), newctime(3), newtzset(3), time(2), tzfile(5)
+
+ NEWSTRFTIME(3)
Deleted: vendor/tzcode/2016f/newtzset.3
===================================================================
--- vendor/tzcode/dist/newtzset.3 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newtzset.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,238 +0,0 @@
-.TH NEWTZSET 3
-.SH NAME
-tzset \- initialize time conversion information
-.SH SYNOPSIS
-.nf
-.B void tzset()
-.PP
-.B cc ... -ltz
-.fi
-.SH DESCRIPTION
-.I Tzset
-uses the value of the environment variable
-.B TZ
-to set time conversion information used by
-.IR localtime .
-If
-.B TZ
-does not appear in the environment,
-the best available approximation to local wall clock time, as specified
-by the
-.IR tzfile (5)-format
-file
-.B localtime
-in the system time conversion information directory, is used by
-.IR localtime .
-If
-.B TZ
-appears in the environment but its value is a null string,
-Coordinated Universal Time (UTC) is used (without leap second
-correction). If
-.B TZ
-appears in the environment and its value is not a null string:
-.IP
-if the value begins with a colon, it is used as a pathname of a file
-from which to read the time conversion information;
-.IP
-if the value does not begin with a colon, it is first used as the
-pathname of a file from which to read the time conversion information,
-and, if that file cannot be read, is used directly as a specification of
-the time conversion information.
-.PP
-When
-.B TZ
-is used as a pathname, if it begins with a slash,
-it is used as an absolute pathname; otherwise,
-it is used as a pathname relative to a system time conversion information
-directory.
-The file must be in the format specified in
-.IR tzfile (5).
-.PP
-When
-.B TZ
-is used directly as a specification of the time conversion information,
-it must have the following syntax (spaces inserted for clarity):
-.IP
-\fIstd\|offset\fR[\fIdst\fR[\fIoffset\fR][\fB,\fIrule\fR]]
-.PP
-Where:
-.RS
-.TP 15
-.IR std " and " dst
-Three or more bytes that are the designation for the standard
-.RI ( std )
-or summer
-.RI ( dst )
-time zone. Only
-.I std
-is required; if
-.I dst
-is missing, then summer time does not apply in this locale.
-Upper- and lowercase letters are explicitly allowed. Any characters
-except a leading colon
-.RB ( : ),
-digits, comma
-.RB ( , ),
-minus
-.RB ( \(mi ),
-plus
-.RB ( \(pl ),
-and ASCII NUL are allowed.
-.TP
-.I offset
-Indicates the value one must add to the local time to arrive at
-Coordinated Universal Time. The
-.I offset
-has the form:
-.RS
-.IP
-\fIhh\fR[\fB:\fImm\fR[\fB:\fIss\fR]]
-.RE
-.IP
-The minutes
-.RI ( mm )
-and seconds
-.RI ( ss )
-are optional. The hour
-.RI ( hh )
-is required and may be a single digit. The
-.I offset
-following
-.I std
-is required. If no
-.I offset
-follows
-.IR dst ,
-summer time is assumed to be one hour ahead of standard time. One or
-more digits may be used; the value is always interpreted as a decimal
-number. The hour must be between zero and 24, and the minutes (and
-seconds) \(em if present \(em between zero and 59. If preceded by a
-.RB `` \(mi '',
-the time zone shall be east of the Prime Meridian; otherwise it shall be
-west (which may be indicated by an optional preceding
-.RB `` \(pl '').
-.TP
-.I rule
-Indicates when to change to and back from summer time. The
-.I rule
-has the form:
-.RS
-.IP
-\fIdate\fB/\fItime\fB,\fIdate\fB/\fItime\fR
-.RE
-.IP
-where the first
-.I date
-describes when the change from standard to summer time occurs and the
-second
-.I date
-describes when the change back happens. Each
-.I time
-field describes when, in current local time, the change to the other
-time is made.
-.IP
-The format of
-.I date
-is one of the following:
-.RS
-.TP 10
-.BI J n
-The Julian day
-.I n
-.RI "(1\ \(<=" "\ n\ " "\(<=\ 365).
-Leap days are not counted; that is, in all years \(em including leap
-years \(em February 28 is day 59 and March 1 is day 60. It is
-impossible to explicitly refer to the occasional February 29.
-.TP
-.I n
-The zero-based Julian day
-.RI "(0\ \(<=" "\ n\ " "\(<=\ 365).
-Leap days are counted, and it is possible to refer to February 29.
-.TP
-.BI M m . n . d
-The
-.IR d' th
-day
-.RI "(0\ \(<=" "\ d\ " "\(<=\ 6)
-of week
-.I n
-of month
-.I m
-of the year
-.RI "(1\ \(<=" "\ n\ " "\(<=\ 5,
-.RI "1\ \(<=" "\ m\ " "\(<=\ 12,
-where week 5 means ``the last
-.I d
-day in month
-.IR m ''
-which may occur in either the fourth or the fifth week). Week 1 is the
-first week in which the
-.IR d' th
-day occurs. Day zero is Sunday.
-.RE
-.IP "" 15
-The
-.I time
-has the same format as
-.I offset
-except that no leading sign
-.RB (`` \(mi ''
-or
-.RB `` \(pl '')
-is allowed. The default, if
-.I time
-is not given, is
-.BR 02:00:00 .
-.RE
-.LP
-If no
-.I rule
-is present in
-.BR TZ ,
-the rules specified
-by the
-.IR tzfile (5)-format
-file
-.B posixrules
-in the system time conversion information directory are used, with the
-standard and summer time offsets from UTC replaced by those specified by
-the
-.I offset
-values in
-.BR TZ .
-.PP
-For compatibility with System V Release 3.1, a semicolon
-.RB ( ; )
-may be used to separate the
-.I rule
-from the rest of the specification.
-.PP
-If the
-.B TZ
-environment variable does not specify a
-.IR tzfile (5)-format
-and cannot be interpreted as a direct specification,
-UTC is used.
-.SH FILES
-.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
-/usr/local/etc/zoneinfo time zone information directory
-.br
-/usr/local/etc/zoneinfo/localtime local time zone file
-.br
-/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
-.br
-/usr/local/etc/zoneinfo/GMT for UTC leap seconds
-.sp
-If
-.B /usr/local/etc/zoneinfo/GMT
-is absent,
-UTC leap seconds are loaded from
-.BR /usr/local/etc/zoneinfo/posixrules .
-.SH SEE ALSO
-getenv(3),
-newctime(3),
-newstrftime(3),
-time(2),
-tzfile(5)
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/newtzset.3 (from rev 7736, vendor/tzcode/dist/newtzset.3)
===================================================================
--- vendor/tzcode/2016f/newtzset.3 (rev 0)
+++ vendor/tzcode/2016f/newtzset.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,326 @@
+.TH NEWTZSET 3
+.SH NAME
+tzset \- initialize time conversion information
+.SH SYNOPSIS
+.nf
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B #include <time.h>
+.PP
+.B timezone_t tzalloc(char const *TZ);
+.PP
+.B void tzfree(timezone_t tz);
+.PP
+.B void tzset(void);
+.PP
+.B cc ... \*-ltz
+.fi
+.SH DESCRIPTION
+.ie '\(en'' .ds en \-
+.el .ds en \(en
+.ie '\(lq'' .ds lq \&"\"
+.el .ds lq \(lq\"
+.ie '\(rq'' .ds rq \&"\"
+.el .ds rq \(rq\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+.I Tzalloc
+allocates and returns a time zone object described by
+.BR TZ .
+If
+.B TZ
+is not a valid time zone description, or if the object cannot be allocated,
+.I tzalloc
+returns a null pointer and sets
+.BR errno .
+.PP
+.I Tzfree
+frees a time zone object
+.BR tz ,
+which should have been successfully allocated by
+.IR tzalloc .
+This invalidates any
+.B tm_zone
+pointers that
+.B tz
+was used to set.
+.PP
+.I Tzset
+acts like
+.BR tzalloc(getenv("TZ")) ,
+except it saves any resulting time zone object into internal
+storage that is accessed by
+.IR localtime ,
+.IR localtime_r ,
+and
+.IR mktime .
+The anonymous shared time zone object is freed by the next call to
+.IR tzset .
+If the implied call to
+.B tzalloc
+fails,
+.I tzset
+falls back on UTC.
+.PP
+If
+.B TZ
+is null, the best available approximation to local wall
+clock time, as specified by the
+.IR tzfile (5)-format
+file
+.B localtime
+in the system time conversion information directory, is used.
+If
+.B TZ
+is the empty string,
+Universal Time (UT) is used, with the abbreviation "UTC"
+and without leap second correction; please see
+.IR newctime (3)
+for more about UT, UTC, and leap seconds. If
+.B TZ
+is nonnull and nonempty:
+.IP
+if the value begins with a colon, it is used as a pathname of a file
+from which to read the time conversion information;
+.IP
+if the value does not begin with a colon, it is first used as the
+pathname of a file from which to read the time conversion information,
+and, if that file cannot be read, is used directly as a specification of
+the time conversion information.
+.PP
+When
+.B TZ
+is used as a pathname, if it begins with a slash,
+it is used as an absolute pathname; otherwise,
+it is used as a pathname relative to a system time conversion information
+directory.
+The file must be in the format specified in
+.IR tzfile (5).
+.PP
+When
+.B TZ
+is used directly as a specification of the time conversion information,
+it must have the following syntax (spaces inserted for clarity):
+.IP
+\fIstd\|offset\fR[\fIdst\fR[\fIoffset\fR][\fB,\fIrule\fR]]
+.PP
+Where:
+.RS
+.TP 15
+.IR std " and " dst
+Three or more bytes that are the designation for the standard
+.RI ( std )
+or summer
+.RI ( dst )
+time zone. Only
+.I std
+is required; if
+.I dst
+is missing, then summer time does not apply in this locale.
+Upper- and lowercase letters are explicitly allowed. Any characters
+except a leading colon
+.RB ( : ),
+digits, comma
+.RB ( , ),
+ASCII minus
+.RB ( \*- ),
+ASCII plus
+.RB ( + ),
+and NUL bytes are allowed.
+.TP
+.I offset
+Indicates the value one must add to the local time to arrive at
+Coordinated Universal Time. The
+.I offset
+has the form:
+.RS
+.IP
+\fIhh\fR[\fB:\fImm\fR[\fB:\fIss\fR]]
+.RE
+.IP
+The minutes
+.RI ( mm )
+and seconds
+.RI ( ss )
+are optional. The hour
+.RI ( hh )
+is required and may be a single digit. The
+.I offset
+following
+.I std
+is required. If no
+.I offset
+follows
+.IR dst ,
+summer time is assumed to be one hour ahead of standard time. One or
+more digits may be used; the value is always interpreted as a decimal
+number. The hour must be between zero and 24, and the minutes (and
+seconds) \*(en if present \*(en between zero and 59. If preceded by a
+.q "\*-" ,
+the time zone shall be east of the Prime Meridian; otherwise it shall be
+west (which may be indicated by an optional preceding
+.q "+" .
+.TP
+.I rule
+Indicates when to change to and back from summer time. The
+.I rule
+has the form:
+.RS
+.IP
+\fIdate\fB/\fItime\fB,\fIdate\fB/\fItime\fR
+.RE
+.IP
+where the first
+.I date
+describes when the change from standard to summer time occurs and the
+second
+.I date
+describes when the change back happens. Each
+.I time
+field describes when, in current local time, the change to the other
+time is made.
+As an extension to POSIX, daylight saving is assumed to be in effect
+all year if it begins January 1 at 00:00 and ends December 31 at
+24:00 plus the difference between daylight saving and standard time,
+leaving no room for standard time in the calendar.
+.IP
+The format of
+.I date
+is one of the following:
+.RS
+.TP 10
+.BI J n
+The Julian day
+.I n
+.RI "(1\ \(<=" "\ n\ " "\(<=\ 365).
+Leap days are not counted; that is, in all years \*(en including leap
+years \*(en February 28 is day 59 and March 1 is day 60. It is
+impossible to explicitly refer to the occasional February 29.
+.TP
+.I n
+The zero-based Julian day
+.RI "(0\ \(<=" "\ n\ " "\(<=\ 365).
+Leap days are counted, and it is possible to refer to February 29.
+.TP
+.BI M m . n . d
+The
+.IR d' th
+day
+.RI "(0\ \(<=" "\ d\ " "\(<=\ 6)
+of week
+.I n
+of month
+.I m
+of the year
+.RI "(1\ \(<=" "\ n\ " "\(<=\ 5,
+.RI "1\ \(<=" "\ m\ " "\(<=\ 12,
+where week 5 means
+.q "the last \fId\fP day in month \fIm\fP"
+which may occur in either the fourth or the fifth week). Week 1 is the
+first week in which the
+.IR d' th
+day occurs. Day zero is Sunday.
+.RE
+.IP "" 15
+The
+.I time
+has the same format as
+.I offset
+except that POSIX does not allow a leading sign (\c
+.q "\*-"
+or
+.q "+" ).
+As an extension to POSIX, the hours part of
+.I time
+can range from \-167 through 167; this allows for unusual rules such
+as
+.q "the Saturday before the first Sunday of March" .
+The default, if
+.I time
+is not given, is
+.BR 02:00:00 .
+.RE
+.LP
+Here are some examples of
+.B TZ
+values that directly specify the time zone rules; they use some of the
+extensions to POSIX.
+.TP
+.B EST5
+stands for US Eastern Standard
+Time (EST), 5 hours behind UTC, without daylight saving.
+.TP
+.B FJT\*-12FJST,M11.1.0,M1.3.4/75
+stands for Fiji Time (FJT) and Fiji Summer Time (FJST), 12 hours ahead
+of UTC, springing forward on November's first Sunday at 02:00, and
+falling back on January's third Thursday at 75:00 (i.e., 03:00 on the
+first Sunday on or after January 18).
+.TP
+.B IST\*-2IDT,M3.4.4/26,M10.5.0
+stands for Israel Standard Time (IST) and Israel Daylight Time (IDT),
+2 hours ahead of UTC, springing forward on March's fourth
+Thursday at 26:00 (i.e., 02:00 on the first Friday on or after March
+23), and falling back on October's last Sunday at 02:00.
+.TP
+.B WART4WARST,J1/0,J365/25
+stands for Western Argentina Summer Time (WARST), 3 hours behind UTC.
+There is a dummy fall-back transition on December 31 at 25:00 daylight
+saving time (i.e., 24:00 standard time, equivalent to January 1 at
+00:00 standard time), and a simultaneous spring-forward transition on
+January 1 at 00:00 standard time, so daylight saving time is in effect
+all year and the initial
+.B WART
+is a placeholder.
+.TP
+.B WGT3WGST,M3.5.0/\*-2,M10.5.0/\*-1
+stands for Western Greenland Time (WGT) and Western Greenland Summer
+Time (WGST), 3 hours behind UTC, where clocks follow the EU rules of
+springing forward on March's last Sunday at 01:00 UTC (\-02:00 local
+time) and falling back on October's last Sunday at 01:00 UTC
+(\-01:00 local time).
+.PP
+If no
+.I rule
+is present in
+.BR TZ ,
+the rules specified
+by the
+.IR tzfile (5)-format
+file
+.B posixrules
+in the system time conversion information directory are used, with the
+standard and summer time offsets from UTC replaced by those specified by
+the
+.I offset
+values in
+.BR TZ .
+.PP
+For compatibility with System V Release 3.1, a semicolon
+.RB ( ; )
+may be used to separate the
+.I rule
+from the rest of the specification.
+.SH FILES
+.ta \w'/usr/local/etc/zoneinfo/posixrules\0\0'u
+/usr/local/etc/zoneinfo time zone information directory
+.br
+/usr/local/etc/zoneinfo/localtime local time zone file
+.br
+/usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+.br
+/usr/local/etc/zoneinfo/GMT for UTC leap seconds
+.sp
+If
+.B /usr/local/etc/zoneinfo/GMT
+is absent,
+UTC leap seconds are loaded from
+.BR /usr/local/etc/zoneinfo/posixrules .
+.SH SEE ALSO
+getenv(3),
+newctime(3),
+newstrftime(3),
+time(2),
+tzfile(5)
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/newtzset.3.txt
===================================================================
--- vendor/tzcode/dist/newtzset.3.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/newtzset.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,134 +0,0 @@
-NEWTZSET(3) NEWTZSET(3)
-
-NAME
- tzset - initialize time conversion information
-
-SYNOPSIS
- void tzset()
-
- cc ... -ltz
-
-DESCRIPTION
- Tzset uses the value of the environment variable TZ to set time
- conversion information used by localtime. If TZ does not appear in the
- environment, the best available approximation to local wall clock time,
- as specified by the tzfile(5)-format file localtime in the system time
- conversion information directory, is used by localtime. If TZ appears
- in the environment but its value is a null string, Coordinated
- Universal Time (UTC) is used (without leap second correction). If TZ
- appears in the environment and its value is not a null string:
-
- if the value begins with a colon, it is used as a pathname of a
- file from which to read the time conversion information;
-
- if the value does not begin with a colon, it is first used as
- the pathname of a file from which to read the time conversion
- information, and, if that file cannot be read, is used directly
- as a specification of the time conversion information.
-
- When TZ is used as a pathname, if it begins with a slash, it is used as
- an absolute pathname; otherwise, it is used as a pathname relative to a
- system time conversion information directory. The file must be in the
- format specified in tzfile(5).
-
- When TZ is used directly as a specification of the time conversion
- information, it must have the following syntax (spaces inserted for
- clarity):
-
- stdoffset[dst[offset][,rule]]
-
- Where:
-
- std and dst Three or more bytes that are the designation for
- the standard (std) or summer (dst) time zone.
- Only std is required; if dst is missing, then
- summer time does not apply in this locale.
- Upper- and lowercase letters are explicitly
- allowed. Any characters except a leading colon
- (:), digits, comma (,), minus (-), plus (+), and
- ASCII NUL are allowed.
-
- offset Indicates the value one must add to the local
- time to arrive at Coordinated Universal Time.
- The offset has the form:
-
- hh[:mm[:ss]]
-
- The minutes (mm) and seconds (ss) are optional.
- The hour (hh) is required and may be a single
- digit. The offset following std is required. If
- no offset follows dst, summer time is assumed to
- be one hour ahead of standard time. One or more
- digits may be used; the value is always
- interpreted as a decimal number. The hour must
- be between zero and 24, and the minutes (and
- seconds) -- if present -- between zero and 59.
- If preceded by a ``-'', the time zone shall be
- east of the Prime Meridian; otherwise it shall be
- west (which may be indicated by an optional
- preceding ``+'').
-
- rule Indicates when to change to and back from summer
- time. The rule has the form:
-
- date/time,date/time
-
- where the first date describes when the change
- from standard to summer time occurs and the
- second date describes when the change back
- happens. Each time field describes when, in
- current local time, the change to the other time
- is made.
-
- The format of date is one of the following:
-
- Jn The Julian day n (1 <= n <= 365). Leap
- days are not counted; that is, in all
- years -- including leap years --
- February 28 is day 59 and March 1 is
- day 60. It is impossible to explicitly
- refer to the occasional February 29.
-
- n The zero-based Julian day
- (0 <= n <= 365). Leap days are
- counted, and it is possible to refer to
- February 29.
-
- Mm.n.d The d'th day (0 <= d <= 6) of week n of
- month m of the year (1 <= n <= 5,
- 1 <= m <= 12, where week 5 means ``the
- last d day in month m'' which may occur
- in either the fourth or the fifth
- week). Week 1 is the first week in
- which the d'th day occurs. Day zero is
- Sunday.
-
- The time has the same format as offset except
- that no leading sign (``-'' or ``+'') is allowed.
- The default, if time is not given, is 02:00:00.
-
- If no rule is present in TZ, the rules specified by the
- tzfile(5)-format file posixrules in the system time conversion
- information directory are used, with the standard and summer time
- offsets from UTC replaced by those specified by the offset values in
- TZ.
-
- For compatibility with System V Release 3.1, a semicolon (;) may be
- used to separate the rule from the rest of the specification.
-
- If the TZ environment variable does not specify a tzfile(5)-format and
- cannot be interpreted as a direct specification, UTC is used.
-
-FILES
- /usr/local/etc/zoneinfo time zone information directory
- /usr/local/etc/zoneinfo/localtime local time zone file
- /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
- /usr/local/etc/zoneinfo/GMT for UTC leap seconds
-
- If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
- from /usr/local/etc/zoneinfo/posixrules.
-
-SEE ALSO
- getenv(3), newctime(3), newstrftime(3), time(2), tzfile(5)
-
- NEWTZSET(3)
Copied: vendor/tzcode/2016f/newtzset.3.txt (from rev 7736, vendor/tzcode/dist/newtzset.3.txt)
===================================================================
--- vendor/tzcode/2016f/newtzset.3.txt (rev 0)
+++ vendor/tzcode/2016f/newtzset.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,192 @@
+NEWTZSET(3) Library Functions Manual NEWTZSET(3)
+
+NAME
+ tzset - initialize time conversion information
+
+SYNOPSIS
+ #include <time.h>
+
+ timezone_t tzalloc(char const *TZ);
+
+ void tzfree(timezone_t tz);
+
+ void tzset(void);
+
+ cc ... -ltz
+
+DESCRIPTION
+ Tzalloc allocates and returns a time zone object described by TZ. If
+ TZ is not a valid time zone description, or if the object cannot be
+ allocated, tzalloc returns a null pointer and sets errno.
+
+ Tzfree frees a time zone object tz, which should have been successfully
+ allocated by tzalloc. This invalidates any tm_zone pointers that tz
+ was used to set.
+
+ Tzset acts like tzalloc(getenv("TZ")), except it saves any resulting
+ time zone object into internal storage that is accessed by localtime,
+ localtime_r, and mktime. The anonymous shared time zone object is
+ freed by the next call to tzset. If the implied call to tzalloc fails,
+ tzset falls back on UTC.
+
+ If TZ is null, the best available approximation to local wall clock
+ time, as specified by the tzfile(5)-format file localtime in the system
+ time conversion information directory, is used. If TZ is the empty
+ string, Universal Time (UT) is used, with the abbreviation "UTC" and
+ without leap second correction; please see newctime(3) for more about
+ UT, UTC, and leap seconds. If TZ is nonnull and nonempty:
+
+ if the value begins with a colon, it is used as a pathname of a
+ file from which to read the time conversion information;
+
+ if the value does not begin with a colon, it is first used as
+ the pathname of a file from which to read the time conversion
+ information, and, if that file cannot be read, is used directly
+ as a specification of the time conversion information.
+
+ When TZ is used as a pathname, if it begins with a slash, it is used as
+ an absolute pathname; otherwise, it is used as a pathname relative to a
+ system time conversion information directory. The file must be in the
+ format specified in tzfile(5).
+
+ When TZ is used directly as a specification of the time conversion
+ information, it must have the following syntax (spaces inserted for
+ clarity):
+
+ stdoffset[dst[offset][,rule]]
+
+ Where:
+
+ std and dst Three or more bytes that are the designation for
+ the standard (std) or summer (dst) time zone.
+ Only std is required; if dst is missing, then
+ summer time does not apply in this locale.
+ Upper- and lowercase letters are explicitly
+ allowed. Any characters except a leading colon
+ (:), digits, comma (,), ASCII minus (-), ASCII
+ plus (+), and NUL bytes are allowed.
+
+ offset Indicates the value one must add to the local
+ time to arrive at Coordinated Universal Time.
+ The offset has the form:
+
+ hh[:mm[:ss]]
+
+ The minutes (mm) and seconds (ss) are optional.
+ The hour (hh) is required and may be a single
+ digit. The offset following std is required. If
+ no offset follows dst, summer time is assumed to
+ be one hour ahead of standard time. One or more
+ digits may be used; the value is always
+ interpreted as a decimal number. The hour must
+ be between zero and 24, and the minutes (and
+ seconds) - if present - between zero and 59. If
+ preceded by a "-", the time zone shall be east of
+ the Prime Meridian; otherwise it shall be west
+ (which may be indicated by an optional preceding
+ "+".
+
+ rule Indicates when to change to and back from summer
+ time. The rule has the form:
+
+ date/time,date/time
+
+ where the first date describes when the change
+ from standard to summer time occurs and the
+ second date describes when the change back
+ happens. Each time field describes when, in
+ current local time, the change to the other time
+ is made. As an extension to POSIX, daylight
+ saving is assumed to be in effect all year if it
+ begins January 1 at 00:00 and ends December 31 at
+ 24:00 plus the difference between daylight saving
+ and standard time, leaving no room for standard
+ time in the calendar.
+
+ The format of date is one of the following:
+
+ Jn The Julian day n (1 <= n <= 365). Leap
+ days are not counted; that is, in all
+ years - including leap years - February
+ 28 is day 59 and March 1 is day 60. It
+ is impossible to explicitly refer to
+ the occasional February 29.
+
+ n The zero-based Julian day
+ (0 <= n <= 365). Leap days are
+ counted, and it is possible to refer to
+ February 29.
+
+ Mm.n.d The d'th day (0 <= d <= 6) of week n of
+ month m of the year (1 <= n <= 5,
+ 1 <= m <= 12, where week 5 means "the
+ last d day in month m" which may occur
+ in either the fourth or the fifth
+ week). Week 1 is the first week in
+ which the d'th day occurs. Day zero is
+ Sunday.
+
+ The time has the same format as offset except
+ that POSIX does not allow a leading sign ("-" or
+ "+"). As an extension to POSIX, the hours part
+ of time can range from -167 through 167; this
+ allows for unusual rules such as "the Saturday
+ before the first Sunday of March". The default,
+ if time is not given, is 02:00:00.
+
+ Here are some examples of TZ values that directly specify the time zone
+ rules; they use some of the extensions to POSIX.
+
+ EST5 stands for US Eastern Standard Time (EST), 5 hours behind UTC,
+ without daylight saving.
+
+ FJT-12FJST,M11.1.0,M1.3.4/75
+ stands for Fiji Time (FJT) and Fiji Summer Time (FJST), 12 hours
+ ahead of UTC, springing forward on November's first Sunday at
+ 02:00, and falling back on January's third Thursday at 75:00
+ (i.e., 03:00 on the first Sunday on or after January 18).
+
+ IST-2IDT,M3.4.4/26,M10.5.0
+ stands for Israel Standard Time (IST) and Israel Daylight Time
+ (IDT), 2 hours ahead of UTC, springing forward on March's fourth
+ Thursday at 26:00 (i.e., 02:00 on the first Friday on or after
+ March 23), and falling back on October's last Sunday at 02:00.
+
+ WART4WARST,J1/0,J365/25
+ stands for Western Argentina Summer Time (WARST), 3 hours behind
+ UTC. There is a dummy fall-back transition on December 31 at
+ 25:00 daylight saving time (i.e., 24:00 standard time,
+ equivalent to January 1 at 00:00 standard time), and a
+ simultaneous spring-forward transition on January 1 at 00:00
+ standard time, so daylight saving time is in effect all year and
+ the initial WART is a placeholder.
+
+ WGT3WGST,M3.5.0/-2,M10.5.0/-1
+ stands for Western Greenland Time (WGT) and Western Greenland
+ Summer Time (WGST), 3 hours behind UTC, where clocks follow the
+ EU rules of springing forward on March's last Sunday at 01:00
+ UTC (-02:00 local time) and falling back on October's last
+ Sunday at 01:00 UTC (-01:00 local time).
+
+ If no rule is present in TZ, the rules specified by the
+ tzfile(5)-format file posixrules in the system time conversion
+ information directory are used, with the standard and summer time
+ offsets from UTC replaced by those specified by the offset values in
+ TZ.
+
+ For compatibility with System V Release 3.1, a semicolon (;) may be
+ used to separate the rule from the rest of the specification.
+
+FILES
+ /usr/local/etc/zoneinfo time zone information directory
+ /usr/local/etc/zoneinfo/localtime local time zone file
+ /usr/local/etc/zoneinfo/posixrules used with POSIX-style TZ's
+ /usr/local/etc/zoneinfo/GMT for UTC leap seconds
+
+ If /usr/local/etc/zoneinfo/GMT is absent, UTC leap seconds are loaded
+ from /usr/local/etc/zoneinfo/posixrules.
+
+SEE ALSO
+ getenv(3), newctime(3), newstrftime(3), time(2), tzfile(5)
+
+ NEWTZSET(3)
Deleted: vendor/tzcode/2016f/private.h
===================================================================
--- vendor/tzcode/dist/private.h 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/private.h 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,289 +0,0 @@
-#ifndef PRIVATE_H
-
-#define PRIVATE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** This header is for use ONLY with the time conversion code.
-** There is no guarantee that it will remain unchanged,
-** or that it will remain at all.
-** Do NOT copy it to any system include directory.
-** Thank you!
-*/
-
-#define GRANDPARENTED "Local time zone must be set--see zic manual page"
-
-/*
-** Defaults for preprocessor symbols.
-** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
-*/
-
-#ifndef HAVE_ADJTIME
-#define HAVE_ADJTIME 1
-#endif /* !defined HAVE_ADJTIME */
-
-#ifndef HAVE_GETTEXT
-#define HAVE_GETTEXT 0
-#endif /* !defined HAVE_GETTEXT */
-
-#ifndef HAVE_INCOMPATIBLE_CTIME_R
-#define HAVE_INCOMPATIBLE_CTIME_R 0
-#endif /* !defined INCOMPATIBLE_CTIME_R */
-
-#ifndef HAVE_SETTIMEOFDAY
-#define HAVE_SETTIMEOFDAY 3
-#endif /* !defined HAVE_SETTIMEOFDAY */
-
-#ifndef HAVE_SYMLINK
-#define HAVE_SYMLINK 1
-#endif /* !defined HAVE_SYMLINK */
-
-#ifndef HAVE_SYS_STAT_H
-#define HAVE_SYS_STAT_H 1
-#endif /* !defined HAVE_SYS_STAT_H */
-
-#ifndef HAVE_SYS_WAIT_H
-#define HAVE_SYS_WAIT_H 1
-#endif /* !defined HAVE_SYS_WAIT_H */
-
-#ifndef HAVE_UNISTD_H
-#define HAVE_UNISTD_H 1
-#endif /* !defined HAVE_UNISTD_H */
-
-#ifndef HAVE_UTMPX_H
-#define HAVE_UTMPX_H 0
-#endif /* !defined HAVE_UTMPX_H */
-
-#ifndef LOCALE_HOME
-#define LOCALE_HOME "/usr/lib/locale"
-#endif /* !defined LOCALE_HOME */
-
-#if HAVE_INCOMPATIBLE_CTIME_R
-#define asctime_r _incompatible_asctime_r
-#define ctime_r _incompatible_ctime_r
-#endif /* HAVE_INCOMPATIBLE_CTIME_R */
-
-/*
-** Nested includes
-*/
-
-#include "sys/types.h" /* for time_t */
-#include "stdio.h"
-#include "errno.h"
-#include "string.h"
-#include "limits.h" /* for CHAR_BIT et al. */
-#include "time.h"
-#include "stdlib.h"
-
-#if HAVE_GETTEXT
-#include "libintl.h"
-#endif /* HAVE_GETTEXT */
-
-#if HAVE_SYS_WAIT_H
-#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
-#endif /* HAVE_SYS_WAIT_H */
-
-#ifndef WIFEXITED
-#define WIFEXITED(status) (((status) & 0xff) == 0)
-#endif /* !defined WIFEXITED */
-#ifndef WEXITSTATUS
-#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
-#endif /* !defined WEXITSTATUS */
-
-#if HAVE_UNISTD_H
-#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */
-#endif /* HAVE_UNISTD_H */
-
-#ifndef F_OK
-#define F_OK 0
-#endif /* !defined F_OK */
-#ifndef R_OK
-#define R_OK 4
-#endif /* !defined R_OK */
-
-/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
-#define is_digit(c) ((unsigned)(c) - '0' <= 9)
-
-/*
-** Define HAVE_STDINT_H's default value here, rather than at the
-** start, since __GLIBC__'s value depends on previously-included
-** files.
-** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
-*/
-#ifndef HAVE_STDINT_H
-#define HAVE_STDINT_H \
- (199901 <= __STDC_VERSION__ || \
- 2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
-#endif /* !defined HAVE_STDINT_H */
-
-#if HAVE_STDINT_H
-#include "stdint.h"
-#endif /* !HAVE_STDINT_H */
-
-#ifndef INT_FAST64_MAX
-/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
-#if defined LLONG_MAX || defined __LONG_LONG_MAX__
-typedef long long int_fast64_t;
-#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
-#if (LONG_MAX >> 31) < 0xffffffff
-Please use a compiler that supports a 64-bit integer type (or wider);
-you may need to compile with "-DHAVE_STDINT_H".
-#endif /* (LONG_MAX >> 31) < 0xffffffff */
-typedef long int_fast64_t;
-#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
-#endif /* !defined INT_FAST64_MAX */
-
-#ifndef INT32_MAX
-#define INT32_MAX 0x7fffffff
-#endif /* !defined INT32_MAX */
-#ifndef INT32_MIN
-#define INT32_MIN (-1 - INT32_MAX)
-#endif /* !defined INT32_MIN */
-
-#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
-# define ATTRIBUTE_PURE __attribute__ ((__pure__))
-#else
-# define ATTRIBUTE_PURE /* empty */
-#endif
-
-/*
-** Workarounds for compilers/systems.
-*/
-
-/*
-** Some time.h implementations don't declare asctime_r.
-** Others might define it as a macro.
-** Fix the former without affecting the latter.
-*/
-
-#ifndef asctime_r
-extern char * asctime_r(struct tm const *, char *);
-#endif
-
-/*
-** Private function declarations.
-*/
-
-char * icatalloc(char * old, const char * new);
-char * icpyalloc(const char * string);
-const char * scheck(const char * string, const char * format);
-
-/*
-** Finally, some convenience items.
-*/
-
-#ifndef TRUE
-#define TRUE 1
-#endif /* !defined TRUE */
-
-#ifndef FALSE
-#define FALSE 0
-#endif /* !defined FALSE */
-
-#ifndef TYPE_BIT
-#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
-#endif /* !defined TYPE_BIT */
-
-#ifndef TYPE_SIGNED
-#define TYPE_SIGNED(type) (((type) -1) < 0)
-#endif /* !defined TYPE_SIGNED */
-
-/*
-** Since the definition of TYPE_INTEGRAL contains floating point numbers,
-** it cannot be used in preprocessor directives.
-*/
-
-#ifndef TYPE_INTEGRAL
-#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
-#endif /* !defined TYPE_INTEGRAL */
-
-#ifndef INT_STRLEN_MAXIMUM
-/*
-** 302 / 1000 is log10(2.0) rounded up.
-** Subtract one for the sign bit if the type is signed;
-** add one for integer division truncation;
-** add one more for a minus sign if the type is signed.
-*/
-#define INT_STRLEN_MAXIMUM(type) \
- ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
- 1 + TYPE_SIGNED(type))
-#endif /* !defined INT_STRLEN_MAXIMUM */
-
-/*
-** INITIALIZE(x)
-*/
-
-#ifndef GNUC_or_lint
-#ifdef lint
-#define GNUC_or_lint
-#endif /* defined lint */
-#ifndef lint
-#ifdef __GNUC__
-#define GNUC_or_lint
-#endif /* defined __GNUC__ */
-#endif /* !defined lint */
-#endif /* !defined GNUC_or_lint */
-
-#ifndef INITIALIZE
-#ifdef GNUC_or_lint
-#define INITIALIZE(x) ((x) = 0)
-#endif /* defined GNUC_or_lint */
-#ifndef GNUC_or_lint
-#define INITIALIZE(x)
-#endif /* !defined GNUC_or_lint */
-#endif /* !defined INITIALIZE */
-
-/*
-** For the benefit of GNU folk...
-** `_(MSGID)' uses the current locale's message library string for MSGID.
-** The default is to use gettext if available, and use MSGID otherwise.
-*/
-
-#ifndef _
-#if HAVE_GETTEXT
-#define _(msgid) gettext(msgid)
-#else /* !HAVE_GETTEXT */
-#define _(msgid) msgid
-#endif /* !HAVE_GETTEXT */
-#endif /* !defined _ */
-
-#ifndef TZ_DOMAIN
-#define TZ_DOMAIN "tz"
-#endif /* !defined TZ_DOMAIN */
-
-#if HAVE_INCOMPATIBLE_CTIME_R
-#undef asctime_r
-#undef ctime_r
-char *asctime_r(struct tm const *, char *);
-char *ctime_r(time_t const *, char *);
-#endif /* HAVE_INCOMPATIBLE_CTIME_R */
-
-#ifndef YEARSPERREPEAT
-#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
-#endif /* !defined YEARSPERREPEAT */
-
-/*
-** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
-*/
-
-#ifndef AVGSECSPERYEAR
-#define AVGSECSPERYEAR 31556952L
-#endif /* !defined AVGSECSPERYEAR */
-
-#ifndef SECSPERREPEAT
-#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
-#endif /* !defined SECSPERREPEAT */
-
-#ifndef SECSPERREPEAT_BITS
-#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
-#endif /* !defined SECSPERREPEAT_BITS */
-
-/*
-** UNIX was a registered trademark of The Open Group in 2003.
-*/
-
-#endif /* !defined PRIVATE_H */
Copied: vendor/tzcode/2016f/private.h (from rev 7736, vendor/tzcode/dist/private.h)
===================================================================
--- vendor/tzcode/2016f/private.h (rev 0)
+++ vendor/tzcode/2016f/private.h 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,585 @@
+#ifndef PRIVATE_H
+
+#define PRIVATE_H
+
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+#define GRANDPARENTED "Local time zone must be set--see zic manual page"
+
+/*
+** Defaults for preprocessor symbols.
+** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'.
+*/
+
+#ifndef HAVE_DECL_ASCTIME_R
+#define HAVE_DECL_ASCTIME_R 1
+#endif
+
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT 0
+#endif /* !defined HAVE_GETTEXT */
+
+#ifndef HAVE_INCOMPATIBLE_CTIME_R
+#define HAVE_INCOMPATIBLE_CTIME_R 0
+#endif /* !defined INCOMPATIBLE_CTIME_R */
+
+#ifndef HAVE_LINK
+#define HAVE_LINK 1
+#endif /* !defined HAVE_LINK */
+
+#ifndef HAVE_POSIX_DECLS
+#define HAVE_POSIX_DECLS 1
+#endif
+
+#ifndef HAVE_STRDUP
+#define HAVE_STRDUP 1
+#endif
+
+#ifndef HAVE_SYMLINK
+#define HAVE_SYMLINK 1
+#endif /* !defined HAVE_SYMLINK */
+
+#ifndef HAVE_SYS_STAT_H
+#define HAVE_SYS_STAT_H 1
+#endif /* !defined HAVE_SYS_STAT_H */
+
+#ifndef HAVE_SYS_WAIT_H
+#define HAVE_SYS_WAIT_H 1
+#endif /* !defined HAVE_SYS_WAIT_H */
+
+#ifndef HAVE_UNISTD_H
+#define HAVE_UNISTD_H 1
+#endif /* !defined HAVE_UNISTD_H */
+
+#ifndef HAVE_UTMPX_H
+#define HAVE_UTMPX_H 1
+#endif /* !defined HAVE_UTMPX_H */
+
+#ifndef NETBSD_INSPIRED
+# define NETBSD_INSPIRED 1
+#endif
+
+#if HAVE_INCOMPATIBLE_CTIME_R
+#define asctime_r _incompatible_asctime_r
+#define ctime_r _incompatible_ctime_r
+#endif /* HAVE_INCOMPATIBLE_CTIME_R */
+
+/* Enable tm_gmtoff and tm_zone on GNUish systems. */
+#define _GNU_SOURCE 1
+/* Fix asctime_r on Solaris 10. */
+#define _POSIX_PTHREAD_SEMANTICS 1
+/* Enable strtoimax on Solaris 10. */
+#define __EXTENSIONS__ 1
+
+/*
+** Nested includes
+*/
+
+/* Avoid clashes with NetBSD by renaming NetBSD's declarations. */
+#define localtime_rz sys_localtime_rz
+#define mktime_z sys_mktime_z
+#define posix2time_z sys_posix2time_z
+#define time2posix_z sys_time2posix_z
+#define timezone_t sys_timezone_t
+#define tzalloc sys_tzalloc
+#define tzfree sys_tzfree
+#include <time.h>
+#undef localtime_rz
+#undef mktime_z
+#undef posix2time_z
+#undef time2posix_z
+#undef timezone_t
+#undef tzalloc
+#undef tzfree
+
+#include "sys/types.h" /* for time_t */
+#include "stdio.h"
+#include "string.h"
+#include "limits.h" /* for CHAR_BIT et al. */
+#include "stdlib.h"
+
+#include "errno.h"
+
+#ifndef ENAMETOOLONG
+# define ENAMETOOLONG EINVAL
+#endif
+#ifndef ENOTSUP
+# define ENOTSUP EINVAL
+#endif
+#ifndef EOVERFLOW
+# define EOVERFLOW EINVAL
+#endif
+
+#if HAVE_GETTEXT
+#include "libintl.h"
+#endif /* HAVE_GETTEXT */
+
+#if HAVE_SYS_WAIT_H
+#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
+#endif /* HAVE_SYS_WAIT_H */
+
+#ifndef WIFEXITED
+#define WIFEXITED(status) (((status) & 0xff) == 0)
+#endif /* !defined WIFEXITED */
+#ifndef WEXITSTATUS
+#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
+#endif /* !defined WEXITSTATUS */
+
+#if HAVE_UNISTD_H
+#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */
+#endif /* HAVE_UNISTD_H */
+
+#ifndef HAVE_STRFTIME_L
+# if _POSIX_VERSION < 200809
+# define HAVE_STRFTIME_L 0
+# else
+# define HAVE_STRFTIME_L 1
+# endif
+#endif
+
+#ifndef F_OK
+#define F_OK 0
+#endif /* !defined F_OK */
+#ifndef R_OK
+#define R_OK 4
+#endif /* !defined R_OK */
+
+/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
+#define is_digit(c) ((unsigned)(c) - '0' <= 9)
+
+/*
+** Define HAVE_STDINT_H's default value here, rather than at the
+** start, since __GLIBC__'s value depends on previously-included
+** files.
+** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
+*/
+#ifndef HAVE_STDINT_H
+#define HAVE_STDINT_H \
+ (199901 <= __STDC_VERSION__ \
+ || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \
+ || __CYGWIN__)
+#endif /* !defined HAVE_STDINT_H */
+
+#if HAVE_STDINT_H
+#include "stdint.h"
+#endif /* !HAVE_STDINT_H */
+
+#ifndef HAVE_INTTYPES_H
+# define HAVE_INTTYPES_H HAVE_STDINT_H
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
+/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
+#ifdef __LONG_LONG_MAX__
+# ifndef LLONG_MAX
+# define LLONG_MAX __LONG_LONG_MAX__
+# endif
+# ifndef LLONG_MIN
+# define LLONG_MIN (-1 - LLONG_MAX)
+# endif
+#endif
+
+#ifndef INT_FAST64_MAX
+# ifdef LLONG_MAX
+typedef long long int_fast64_t;
+# define INT_FAST64_MIN LLONG_MIN
+# define INT_FAST64_MAX LLONG_MAX
+# else
+# if LONG_MAX >> 31 < 0xffffffff
+Please use a compiler that supports a 64-bit integer type (or wider);
+you may need to compile with "-DHAVE_STDINT_H".
+# endif
+typedef long int_fast64_t;
+# define INT_FAST64_MIN LONG_MIN
+# define INT_FAST64_MAX LONG_MAX
+# endif
+#endif
+
+#ifndef SCNdFAST64
+# if INT_FAST64_MAX == LLONG_MAX
+# define SCNdFAST64 "lld"
+# else
+# define SCNdFAST64 "ld"
+# endif
+#endif
+
+#ifndef INT_FAST32_MAX
+# if INT_MAX >> 31 == 0
+typedef long int_fast32_t;
+# define INT_FAST32_MAX LONG_MAX
+# define INT_FAST32_MIN LONG_MIN
+# else
+typedef int int_fast32_t;
+# define INT_FAST32_MAX INT_MAX
+# define INT_FAST32_MIN INT_MIN
+# endif
+#endif
+
+#ifndef INTMAX_MAX
+# ifdef LLONG_MAX
+typedef long long intmax_t;
+# define strtoimax strtoll
+# define INTMAX_MAX LLONG_MAX
+# define INTMAX_MIN LLONG_MIN
+# else
+typedef long intmax_t;
+# define strtoimax strtol
+# define INTMAX_MAX LONG_MAX
+# define INTMAX_MIN LONG_MIN
+# endif
+#endif
+
+#ifndef PRIdMAX
+# if INTMAX_MAX == LLONG_MAX
+# define PRIdMAX "lld"
+# else
+# define PRIdMAX "ld"
+# endif
+#endif
+
+#ifndef UINT_FAST64_MAX
+# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
+typedef unsigned long long uint_fast64_t;
+# else
+# if ULONG_MAX >> 31 >> 1 < 0xffffffff
+Please use a compiler that supports a 64-bit integer type (or wider);
+you may need to compile with "-DHAVE_STDINT_H".
+# endif
+typedef unsigned long uint_fast64_t;
+# endif
+#endif
+
+#ifndef UINTMAX_MAX
+# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
+typedef unsigned long long uintmax_t;
+# else
+typedef unsigned long uintmax_t;
+# endif
+#endif
+
+#ifndef PRIuMAX
+# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
+# define PRIuMAX "llu"
+# else
+# define PRIuMAX "lu"
+# endif
+#endif
+
+#ifndef INT32_MAX
+#define INT32_MAX 0x7fffffff
+#endif /* !defined INT32_MAX */
+#ifndef INT32_MIN
+#define INT32_MIN (-1 - INT32_MAX)
+#endif /* !defined INT32_MIN */
+
+#ifndef SIZE_MAX
+#define SIZE_MAX ((size_t) -1)
+#endif
+
+#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
+# define ATTRIBUTE_CONST __attribute__ ((const))
+# define ATTRIBUTE_PURE __attribute__ ((__pure__))
+# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define ATTRIBUTE_CONST /* empty */
+# define ATTRIBUTE_PURE /* empty */
+# define ATTRIBUTE_FORMAT(spec) /* empty */
+#endif
+
+#if !defined _Noreturn && __STDC_VERSION__ < 201112
+# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
+# define _Noreturn __attribute__ ((__noreturn__))
+# else
+# define _Noreturn
+# endif
+#endif
+
+#if __STDC_VERSION__ < 199901 && !defined restrict
+# define restrict /* empty */
+#endif
+
+/*
+** Workarounds for compilers/systems.
+*/
+
+/*
+** Compile with -Dtime_tz=T to build the tz package with a private
+** time_t type equivalent to T rather than the system-supplied time_t.
+** This debugging feature can test unusual design decisions
+** (e.g., time_t wider than 'long', or unsigned time_t) even on
+** typical platforms.
+*/
+#ifdef time_tz
+# ifdef LOCALTIME_IMPLEMENTATION
+static time_t sys_time(time_t *x) { return time(x); }
+# endif
+
+typedef time_tz tz_time_t;
+
+# undef ctime
+# define ctime tz_ctime
+# undef ctime_r
+# define ctime_r tz_ctime_r
+# undef difftime
+# define difftime tz_difftime
+# undef gmtime
+# define gmtime tz_gmtime
+# undef gmtime_r
+# define gmtime_r tz_gmtime_r
+# undef localtime
+# define localtime tz_localtime
+# undef localtime_r
+# define localtime_r tz_localtime_r
+# undef localtime_rz
+# define localtime_rz tz_localtime_rz
+# undef mktime
+# define mktime tz_mktime
+# undef mktime_z
+# define mktime_z tz_mktime_z
+# undef offtime
+# define offtime tz_offtime
+# undef posix2time
+# define posix2time tz_posix2time
+# undef posix2time_z
+# define posix2time_z tz_posix2time_z
+# undef time
+# define time tz_time
+# undef time2posix
+# define time2posix tz_time2posix
+# undef time2posix_z
+# define time2posix_z tz_time2posix_z
+# undef time_t
+# define time_t tz_time_t
+# undef timegm
+# define timegm tz_timegm
+# undef timelocal
+# define timelocal tz_timelocal
+# undef timeoff
+# define timeoff tz_timeoff
+# undef tzalloc
+# define tzalloc tz_tzalloc
+# undef tzfree
+# define tzfree tz_tzfree
+# undef tzset
+# define tzset tz_tzset
+# undef tzsetwall
+# define tzsetwall tz_tzsetwall
+
+char *ctime(time_t const *);
+char *ctime_r(time_t const *, char *);
+double difftime(time_t, time_t);
+struct tm *gmtime(time_t const *);
+struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
+struct tm *localtime(time_t const *);
+struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
+time_t mktime(struct tm *);
+time_t time(time_t *);
+void tzset(void);
+#endif
+
+#if !HAVE_DECL_ASCTIME_R && !defined asctime_r
+extern char *asctime_r(struct tm const *restrict, char *restrict);
+#endif
+
+#if !HAVE_POSIX_DECLS
+# ifdef USG_COMPAT
+# ifndef timezone
+extern long timezone;
+# endif
+# ifndef daylight
+extern int daylight;
+# endif
+# endif
+#endif
+
+#if defined ALTZONE && !defined altzone
+extern long altzone;
+#endif
+
+/*
+** The STD_INSPIRED functions are similar, but most also need
+** declarations if time_tz is defined.
+*/
+
+#ifdef STD_INSPIRED
+# if !defined tzsetwall || defined time_tz
+void tzsetwall(void);
+# endif
+# if !defined offtime || defined time_tz
+struct tm *offtime(time_t const *, long);
+# endif
+# if !defined timegm || defined time_tz
+time_t timegm(struct tm *);
+# endif
+# if !defined timelocal || defined time_tz
+time_t timelocal(struct tm *);
+# endif
+# if !defined timeoff || defined time_tz
+time_t timeoff(struct tm *, long);
+# endif
+# if !defined time2posix || defined time_tz
+time_t time2posix(time_t);
+# endif
+# if !defined posix2time || defined time_tz
+time_t posix2time(time_t);
+# endif
+#endif
+
+/* Infer TM_ZONE on systems where this information is known, but suppress
+ guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */
+#if (defined __GLIBC__ \
+ || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \
+ || (defined __APPLE__ && defined __MACH__))
+# if !defined TM_GMTOFF && !defined NO_TM_GMTOFF
+# define TM_GMTOFF tm_gmtoff
+# endif
+# if !defined TM_ZONE && !defined NO_TM_ZONE
+# define TM_ZONE tm_zone
+# endif
+#endif
+
+/*
+** Define functions that are ABI compatible with NetBSD but have
+** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t
+** and labors under the misconception that 'const timezone_t' is a
+** pointer to a constant. This use of 'const' is ineffective, so it
+** is not done here. What we call 'struct state' NetBSD calls
+** 'struct __state', but this is a private name so it doesn't matter.
+*/
+#if NETBSD_INSPIRED
+typedef struct state *timezone_t;
+struct tm *localtime_rz(timezone_t restrict, time_t const *restrict,
+ struct tm *restrict);
+time_t mktime_z(timezone_t restrict, struct tm *restrict);
+timezone_t tzalloc(char const *);
+void tzfree(timezone_t);
+# ifdef STD_INSPIRED
+# if !defined posix2time_z || defined time_tz
+time_t posix2time_z(timezone_t, time_t) ATTRIBUTE_PURE;
+# endif
+# if !defined time2posix_z || defined time_tz
+time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE;
+# endif
+# endif
+#endif
+
+/*
+** Finally, some convenience items.
+*/
+
+#if __STDC_VERSION__ < 199901
+# define true 1
+# define false 0
+# define bool int
+#else
+# include <stdbool.h>
+#endif
+
+#ifndef TYPE_BIT
+#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
+#endif /* !defined TYPE_BIT */
+
+#ifndef TYPE_SIGNED
+#define TYPE_SIGNED(type) (((type) -1) < 0)
+#endif /* !defined TYPE_SIGNED */
+
+#define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0)
+
+/* Max and min values of the integer type T, of which only the bottom
+ B bits are used, and where the highest-order used bit is considered
+ to be a sign bit if T is signed. */
+#define MAXVAL(t, b) \
+ ((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t))) \
+ - 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t)))))
+#define MINVAL(t, b) \
+ ((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0))
+
+/* The minimum and maximum finite time values. This assumes no padding. */
+static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t));
+static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t));
+
+#ifndef INT_STRLEN_MAXIMUM
+/*
+** 302 / 1000 is log10(2.0) rounded up.
+** Subtract one for the sign bit if the type is signed;
+** add one for integer division truncation;
+** add one more for a minus sign if the type is signed.
+*/
+#define INT_STRLEN_MAXIMUM(type) \
+ ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
+ 1 + TYPE_SIGNED(type))
+#endif /* !defined INT_STRLEN_MAXIMUM */
+
+/*
+** INITIALIZE(x)
+*/
+
+#ifdef lint
+# define INITIALIZE(x) ((x) = 0)
+#else
+# define INITIALIZE(x)
+#endif
+
+#ifndef UNINIT_TRAP
+# define UNINIT_TRAP 0
+#endif
+
+/*
+** For the benefit of GNU folk...
+** '_(MSGID)' uses the current locale's message library string for MSGID.
+** The default is to use gettext if available, and use MSGID otherwise.
+*/
+
+#ifndef _
+#if HAVE_GETTEXT
+#define _(msgid) gettext(msgid)
+#else /* !HAVE_GETTEXT */
+#define _(msgid) msgid
+#endif /* !HAVE_GETTEXT */
+#endif /* !defined _ */
+
+#if !defined TZ_DOMAIN && defined HAVE_GETTEXT
+# define TZ_DOMAIN "tz"
+#endif
+
+#if HAVE_INCOMPATIBLE_CTIME_R
+#undef asctime_r
+#undef ctime_r
+char *asctime_r(struct tm const *, char *);
+char *ctime_r(time_t const *, char *);
+#endif /* HAVE_INCOMPATIBLE_CTIME_R */
+
+#ifndef YEARSPERREPEAT
+#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
+#endif /* !defined YEARSPERREPEAT */
+
+/*
+** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
+*/
+
+#ifndef AVGSECSPERYEAR
+#define AVGSECSPERYEAR 31556952L
+#endif /* !defined AVGSECSPERYEAR */
+
+#ifndef SECSPERREPEAT
+#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
+#endif /* !defined SECSPERREPEAT */
+
+#ifndef SECSPERREPEAT_BITS
+#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
+#endif /* !defined SECSPERREPEAT_BITS */
+
+#endif /* !defined PRIVATE_H */
Deleted: vendor/tzcode/2016f/strftime.c
===================================================================
--- vendor/tzcode/dist/strftime.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/strftime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,733 +0,0 @@
-#include "private.h"
-
-/*
-** Copyright (c) 1989 The Regents of the University of California.
-** All rights reserved.
-**
-** Redistribution and use in source and binary forms are permitted
-** provided that the above copyright notice and this paragraph are
-** duplicated in all such forms and that any documentation,
-** advertising materials, and other materials related to such
-** distribution and use acknowledge that the software was developed
-** by the University of California, Berkeley. The name of the
-** University may not be used to endorse or promote products derived
-** from this software without specific prior written permission.
-** THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
-** IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
-** WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-*/
-
-#ifndef LIBC_SCCS
-#ifndef lint
-static const char sccsid[] = "@(#)strftime.c 5.4 (Berkeley) 3/14/89";
-#endif /* !defined lint */
-#endif /* !defined LIBC_SCCS */
-
-#include "tzfile.h"
-#include "fcntl.h"
-#include "locale.h"
-
-struct lc_time_T {
- const char * mon[MONSPERYEAR];
- const char * month[MONSPERYEAR];
- const char * wday[DAYSPERWEEK];
- const char * weekday[DAYSPERWEEK];
- const char * X_fmt;
- const char * x_fmt;
- const char * c_fmt;
- const char * am;
- const char * pm;
- const char * date_fmt;
-};
-
-#ifdef LOCALE_HOME
-#include "sys/stat.h"
-static struct lc_time_T localebuf;
-static struct lc_time_T * _loc(void);
-#define Locale _loc()
-#endif /* defined LOCALE_HOME */
-#ifndef LOCALE_HOME
-#define Locale (&C_time_locale)
-#endif /* !defined LOCALE_HOME */
-
-static const struct lc_time_T C_time_locale = {
- {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- }, {
- "January", "February", "March", "April", "May", "June",
- "July", "August", "September", "October", "November", "December"
- }, {
- "Sun", "Mon", "Tue", "Wed",
- "Thu", "Fri", "Sat"
- }, {
- "Sunday", "Monday", "Tuesday", "Wednesday",
- "Thursday", "Friday", "Saturday"
- },
-
- /* X_fmt */
- "%H:%M:%S",
-
- /*
- ** x_fmt
- ** C99 requires this format.
- ** Using just numbers (as here) makes Quakers happier;
- ** it's also compatible with SVR4.
- */
- "%m/%d/%y",
-
- /*
- ** c_fmt
- ** C99 requires this format.
- ** Previously this code used "%D %X", but we now conform to C99.
- ** Note that
- ** "%a %b %d %H:%M:%S %Y"
- ** is used by Solaris 2.3.
- */
- "%a %b %e %T %Y",
-
- /* am */
- "AM",
-
- /* pm */
- "PM",
-
- /* date_fmt */
- "%a %b %e %H:%M:%S %Z %Y"
-};
-
-static char * _add(const char *, char *, const char *);
-static char * _conv(int, const char *, char *, const char *);
-static char * _fmt(const char *, const struct tm *, char *, const char *,
- int *);
-static char * _yconv(int, int, int, int, char *, const char *);
-
-extern char * tzname[];
-
-#ifndef YEAR_2000_NAME
-#define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS"
-#endif /* !defined YEAR_2000_NAME */
-
-#define IN_NONE 0
-#define IN_SOME 1
-#define IN_THIS 2
-#define IN_ALL 3
-
-size_t
-strftime(char * const s, const size_t maxsize, const char *const format,
- const struct tm *const t)
-{
- char * p;
- int warn;
-
- tzset();
-#ifdef LOCALE_HOME
- localebuf.mon[0] = 0;
-#endif /* defined LOCALE_HOME */
- warn = IN_NONE;
- p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn);
-#ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU
- if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) {
- (void) fprintf(stderr, "\n");
- if (format == NULL)
- (void) fprintf(stderr, "NULL strftime format ");
- else (void) fprintf(stderr, "strftime format \"%s\" ",
- format);
- (void) fprintf(stderr, "yields only two digits of years in ");
- if (warn == IN_SOME)
- (void) fprintf(stderr, "some locales");
- else if (warn == IN_THIS)
- (void) fprintf(stderr, "the current locale");
- else (void) fprintf(stderr, "all locales");
- (void) fprintf(stderr, "\n");
- }
-#endif /* !defined NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */
- if (p == s + maxsize)
- return 0;
- *p = '\0';
- return p - s;
-}
-
-static char *
-_fmt(const char *format, const struct tm *const t, char * pt,
- const char *const ptlim, int *warnp)
-{
- for ( ; *format; ++format) {
- if (*format == '%') {
-label:
- switch (*++format) {
- case '\0':
- --format;
- break;
- case 'A':
- pt = _add((t->tm_wday < 0 ||
- t->tm_wday >= DAYSPERWEEK) ?
- "?" : Locale->weekday[t->tm_wday],
- pt, ptlim);
- continue;
- case 'a':
- pt = _add((t->tm_wday < 0 ||
- t->tm_wday >= DAYSPERWEEK) ?
- "?" : Locale->wday[t->tm_wday],
- pt, ptlim);
- continue;
- case 'B':
- pt = _add((t->tm_mon < 0 ||
- t->tm_mon >= MONSPERYEAR) ?
- "?" : Locale->month[t->tm_mon],
- pt, ptlim);
- continue;
- case 'b':
- case 'h':
- pt = _add((t->tm_mon < 0 ||
- t->tm_mon >= MONSPERYEAR) ?
- "?" : Locale->mon[t->tm_mon],
- pt, ptlim);
- continue;
- case 'C':
- /*
- ** %C used to do a...
- ** _fmt("%a %b %e %X %Y", t);
- ** ...whereas now POSIX 1003.2 calls for
- ** something completely different.
- ** (ado, 1993-05-24)
- */
- pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 0,
- pt, ptlim);
- continue;
- case 'c':
- {
- int warn2 = IN_SOME;
-
- pt = _fmt(Locale->c_fmt, t, pt, ptlim, &warn2);
- if (warn2 == IN_ALL)
- warn2 = IN_THIS;
- if (warn2 > *warnp)
- *warnp = warn2;
- }
- continue;
- case 'D':
- pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
- continue;
- case 'd':
- pt = _conv(t->tm_mday, "%02d", pt, ptlim);
- continue;
- case 'E':
- case 'O':
- /*
- ** C99 locale modifiers.
- ** The sequences
- ** %Ec %EC %Ex %EX %Ey %EY
- ** %Od %oe %OH %OI %Om %OM
- ** %OS %Ou %OU %OV %Ow %OW %Oy
- ** are supposed to provide alternate
- ** representations.
- */
- goto label;
- case 'e':
- pt = _conv(t->tm_mday, "%2d", pt, ptlim);
- continue;
- case 'F':
- pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
- continue;
- case 'H':
- pt = _conv(t->tm_hour, "%02d", pt, ptlim);
- continue;
- case 'I':
- pt = _conv((t->tm_hour % 12) ?
- (t->tm_hour % 12) : 12,
- "%02d", pt, ptlim);
- continue;
- case 'j':
- pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
- continue;
- case 'k':
- /*
- ** This used to be...
- ** _conv(t->tm_hour % 12 ?
- ** t->tm_hour % 12 : 12, 2, ' ');
- ** ...and has been changed to the below to
- ** match SunOS 4.1.1 and Arnold Robbins'
- ** strftime version 3.0. That is, "%k" and
- ** "%l" have been swapped.
- ** (ado, 1993-05-24)
- */
- pt = _conv(t->tm_hour, "%2d", pt, ptlim);
- continue;
-#ifdef KITCHEN_SINK
- case 'K':
- /*
- ** After all this time, still unclaimed!
- */
- pt = _add("kitchen sink", pt, ptlim);
- continue;
-#endif /* defined KITCHEN_SINK */
- case 'l':
- /*
- ** This used to be...
- ** _conv(t->tm_hour, 2, ' ');
- ** ...and has been changed to the below to
- ** match SunOS 4.1.1 and Arnold Robbin's
- ** strftime version 3.0. That is, "%k" and
- ** "%l" have been swapped.
- ** (ado, 1993-05-24)
- */
- pt = _conv((t->tm_hour % 12) ?
- (t->tm_hour % 12) : 12,
- "%2d", pt, ptlim);
- continue;
- case 'M':
- pt = _conv(t->tm_min, "%02d", pt, ptlim);
- continue;
- case 'm':
- pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
- continue;
- case 'n':
- pt = _add("\n", pt, ptlim);
- continue;
- case 'p':
- pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
- Locale->pm :
- Locale->am,
- pt, ptlim);
- continue;
- case 'R':
- pt = _fmt("%H:%M", t, pt, ptlim, warnp);
- continue;
- case 'r':
- pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
- continue;
- case 'S':
- pt = _conv(t->tm_sec, "%02d", pt, ptlim);
- continue;
- case 's':
- {
- struct tm tm;
- char buf[INT_STRLEN_MAXIMUM(
- time_t) + 1];
- time_t mkt;
-
- tm = *t;
- mkt = mktime(&tm);
- if (TYPE_SIGNED(time_t))
- (void) sprintf(buf, "%ld",
- (long) mkt);
- else (void) sprintf(buf, "%lu",
- (unsigned long) mkt);
- pt = _add(buf, pt, ptlim);
- }
- continue;
- case 'T':
- pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
- continue;
- case 't':
- pt = _add("\t", pt, ptlim);
- continue;
- case 'U':
- pt = _conv((t->tm_yday + DAYSPERWEEK -
- t->tm_wday) / DAYSPERWEEK,
- "%02d", pt, ptlim);
- continue;
- case 'u':
- /*
- ** From Arnold Robbins' strftime version 3.0:
- ** "ISO 8601: Weekday as a decimal number
- ** [1 (Monday) - 7]"
- ** (ado, 1993-05-24)
- */
- pt = _conv((t->tm_wday == 0) ?
- DAYSPERWEEK : t->tm_wday,
- "%d", pt, ptlim);
- continue;
- case 'V': /* ISO 8601 week number */
- case 'G': /* ISO 8601 year (four digits) */
- case 'g': /* ISO 8601 year (two digits) */
-/*
-** From Arnold Robbins' strftime version 3.0: "the week number of the
-** year (the first Monday as the first day of week 1) as a decimal number
-** (01-53)."
-** (ado, 1993-05-24)
-**
-** From "http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html" by Markus Kuhn:
-** "Week 01 of a year is per definition the first week which has the
-** Thursday in this year, which is equivalent to the week which contains
-** the fourth day of January. In other words, the first week of a new year
-** is the week which has the majority of its days in the new year. Week 01
-** might also contain days from the previous year and the week before week
-** 01 of a year is the last week (52 or 53) of the previous year even if
-** it contains days from the new year. A week starts with Monday (day 1)
-** and ends with Sunday (day 7). For example, the first week of the year
-** 1997 lasts from 1996-12-30 to 1997-01-05..."
-** (ado, 1996-01-02)
-*/
- {
- int year;
- int base;
- int yday;
- int wday;
- int w;
-
- year = t->tm_year;
- base = TM_YEAR_BASE;
- yday = t->tm_yday;
- wday = t->tm_wday;
- for ( ; ; ) {
- int len;
- int bot;
- int top;
-
- len = isleap_sum(year, base) ?
- DAYSPERLYEAR :
- DAYSPERNYEAR;
- /*
- ** What yday (-3 ... 3) does
- ** the ISO year begin on?
- */
- bot = ((yday + 11 - wday) %
- DAYSPERWEEK) - 3;
- /*
- ** What yday does the NEXT
- ** ISO year begin on?
- */
- top = bot -
- (len % DAYSPERWEEK);
- if (top < -3)
- top += DAYSPERWEEK;
- top += len;
- if (yday >= top) {
- ++base;
- w = 1;
- break;
- }
- if (yday >= bot) {
- w = 1 + ((yday - bot) /
- DAYSPERWEEK);
- break;
- }
- --base;
- yday += isleap_sum(year, base) ?
- DAYSPERLYEAR :
- DAYSPERNYEAR;
- }
-#ifdef XPG4_1994_04_09
- if ((w == 52 &&
- t->tm_mon == TM_JANUARY) ||
- (w == 1 &&
- t->tm_mon == TM_DECEMBER))
- w = 53;
-#endif /* defined XPG4_1994_04_09 */
- if (*format == 'V')
- pt = _conv(w, "%02d",
- pt, ptlim);
- else if (*format == 'g') {
- *warnp = IN_ALL;
- pt = _yconv(year, base, 0, 1,
- pt, ptlim);
- } else pt = _yconv(year, base, 1, 1,
- pt, ptlim);
- }
- continue;
- case 'v':
- /*
- ** From Arnold Robbins' strftime version 3.0:
- ** "date as dd-bbb-YYYY"
- ** (ado, 1993-05-24)
- */
- pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
- continue;
- case 'W':
- pt = _conv((t->tm_yday + DAYSPERWEEK -
- (t->tm_wday ?
- (t->tm_wday - 1) :
- (DAYSPERWEEK - 1))) / DAYSPERWEEK,
- "%02d", pt, ptlim);
- continue;
- case 'w':
- pt = _conv(t->tm_wday, "%d", pt, ptlim);
- continue;
- case 'X':
- pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
- continue;
- case 'x':
- {
- int warn2 = IN_SOME;
-
- pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
- if (warn2 == IN_ALL)
- warn2 = IN_THIS;
- if (warn2 > *warnp)
- *warnp = warn2;
- }
- continue;
- case 'y':
- *warnp = IN_ALL;
- pt = _yconv(t->tm_year, TM_YEAR_BASE, 0, 1,
- pt, ptlim);
- continue;
- case 'Y':
- pt = _yconv(t->tm_year, TM_YEAR_BASE, 1, 1,
- pt, ptlim);
- continue;
- case 'Z':
-#ifdef TM_ZONE
- if (t->TM_ZONE != NULL)
- pt = _add(t->TM_ZONE, pt, ptlim);
- else
-#endif /* defined TM_ZONE */
- if (t->tm_isdst >= 0)
- pt = _add(tzname[t->tm_isdst != 0],
- pt, ptlim);
- /*
- ** C99 says that %Z must be replaced by the
- ** empty string if the time zone is not
- ** determinable.
- */
- continue;
- case 'z':
- {
- int diff;
- char const * sign;
-
- if (t->tm_isdst < 0)
- continue;
-#ifdef TM_GMTOFF
- diff = t->TM_GMTOFF;
-#else /* !defined TM_GMTOFF */
- /*
- ** C99 says that the UTC offset must
- ** be computed by looking only at
- ** tm_isdst. This requirement is
- ** incorrect, since it means the code
- ** must rely on magic (in this case
- ** altzone and timezone), and the
- ** magic might not have the correct
- ** offset. Doing things correctly is
- ** tricky and requires disobeying C99;
- ** see GNU C strftime for details.
- ** For now, punt and conform to the
- ** standard, even though it's incorrect.
- **
- ** C99 says that %z must be replaced by the
- ** empty string if the time zone is not
- ** determinable, so output nothing if the
- ** appropriate variables are not available.
- */
- if (t->tm_isdst == 0)
-#ifdef USG_COMPAT
- diff = -timezone;
-#else /* !defined USG_COMPAT */
- continue;
-#endif /* !defined USG_COMPAT */
- else
-#ifdef ALTZONE
- diff = -altzone;
-#else /* !defined ALTZONE */
- continue;
-#endif /* !defined ALTZONE */
-#endif /* !defined TM_GMTOFF */
- if (diff < 0) {
- sign = "-";
- diff = -diff;
- } else sign = "+";
- pt = _add(sign, pt, ptlim);
- diff /= SECSPERMIN;
- diff = (diff / MINSPERHOUR) * 100 +
- (diff % MINSPERHOUR);
- pt = _conv(diff, "%04d", pt, ptlim);
- }
- continue;
- case '+':
- pt = _fmt(Locale->date_fmt, t, pt, ptlim,
- warnp);
- continue;
- case '%':
- /*
- ** X311J/88-090 (4.12.3.5): if conversion char is
- ** undefined, behavior is undefined. Print out the
- ** character itself as printf(3) also does.
- */
- default:
- break;
- }
- }
- if (pt == ptlim)
- break;
- *pt++ = *format;
- }
- return pt;
-}
-
-static char *
-_conv(const int n, const char *const format, char *const pt,
- const char *const ptlim)
-{
- char buf[INT_STRLEN_MAXIMUM(int) + 1];
-
- (void) sprintf(buf, format, n);
- return _add(buf, pt, ptlim);
-}
-
-static char *
-_add(const char *str, char *pt, const char *const ptlim)
-{
- while (pt < ptlim && (*pt = *str++) != '\0')
- ++pt;
- return pt;
-}
-
-/*
-** POSIX and the C Standard are unclear or inconsistent about
-** what %C and %y do if the year is negative or exceeds 9999.
-** Use the convention that %C concatenated with %y yields the
-** same output as %Y, and that %Y contains at least 4 bytes,
-** with more only if necessary.
-*/
-
-static char *
-_yconv(const int a, const int b, const int convert_top, const int convert_yy,
- char *pt, const char *const ptlim)
-{
- register int lead;
- register int trail;
-
-#define DIVISOR 100
- trail = a % DIVISOR + b % DIVISOR;
- lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR;
- trail %= DIVISOR;
- if (trail < 0 && lead > 0) {
- trail += DIVISOR;
- --lead;
- } else if (lead < 0 && trail > 0) {
- trail -= DIVISOR;
- ++lead;
- }
- if (convert_top) {
- if (lead == 0 && trail < 0)
- pt = _add("-0", pt, ptlim);
- else pt = _conv(lead, "%02d", pt, ptlim);
- }
- if (convert_yy)
- pt = _conv(((trail < 0) ? -trail : trail), "%02d", pt, ptlim);
- return pt;
-}
-
-#ifdef LOCALE_HOME
-static struct lc_time_T *
-_loc(void)
-{
- static const char locale_home[] = LOCALE_HOME;
- static const char lc_time[] = "LC_TIME";
- static char * locale_buf;
-
- int fd;
- int oldsun; /* "...ain't got nothin' to do..." */
- char * lbuf;
- char * name;
- char * p;
- const char ** ap;
- const char * plim;
- char filename[FILENAME_MAX];
- struct stat st;
- size_t namesize;
- size_t bufsize;
-
- /*
- ** Use localebuf.mon[0] to signal whether locale is already set up.
- */
- if (localebuf.mon[0])
- return &localebuf;
- name = setlocale(LC_TIME, NULL);
- if (name == NULL || *name == '\0')
- goto no_locale;
- /*
- ** If the locale name is the same as our cache, use the cache.
- */
- lbuf = locale_buf;
- if (lbuf != NULL && strcmp(name, lbuf) == 0) {
- p = lbuf;
- for (ap = (const char **) &localebuf;
- ap < (const char **) (&localebuf + 1);
- ++ap)
- *ap = p += strlen(p) + 1;
- return &localebuf;
- }
- /*
- ** Slurp the locale file into the cache.
- */
- namesize = strlen(name) + 1;
- if (sizeof filename <
- ((sizeof locale_home) + namesize + (sizeof lc_time)))
- goto no_locale;
- oldsun = 0;
- (void) sprintf(filename, "%s/%s/%s", locale_home, name, lc_time);
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- /*
- ** Old Sun systems have a different naming and data convention.
- */
- oldsun = 1;
- (void) sprintf(filename, "%s/%s/%s", locale_home,
- lc_time, name);
- fd = open(filename, O_RDONLY);
- if (fd < 0)
- goto no_locale;
- }
- if (fstat(fd, &st) != 0)
- goto bad_locale;
- if (st.st_size <= 0)
- goto bad_locale;
- bufsize = namesize + st.st_size;
- locale_buf = NULL;
- lbuf = (lbuf == NULL) ? malloc(bufsize) : realloc(lbuf, bufsize);
- if (lbuf == NULL)
- goto bad_locale;
- (void) strcpy(lbuf, name);
- p = lbuf + namesize;
- plim = p + st.st_size;
- if (read(fd, p, st.st_size) != st.st_size)
- goto bad_lbuf;
- if (close(fd) != 0)
- goto bad_lbuf;
- /*
- ** Parse the locale file into localebuf.
- */
- if (plim[-1] != '\n')
- goto bad_lbuf;
- for (ap = (const char **) &localebuf;
- ap < (const char **) (&localebuf + 1);
- ++ap) {
- if (p == plim)
- goto bad_lbuf;
- *ap = p;
- while (*p != '\n')
- ++p;
- *p++ = '\0';
- }
- if (oldsun) {
- /*
- ** SunOS 4 used an obsolescent format; see localdtconv(3).
- ** c_fmt had the ``short format for dates and times together''
- ** (SunOS 4 date, "%a %b %e %T %Z %Y" in the C locale);
- ** date_fmt had the ``long format for dates''
- ** (SunOS 4 strftime %C, "%A, %B %e, %Y" in the C locale).
- ** Discard the latter in favor of the former.
- */
- localebuf.date_fmt = localebuf.c_fmt;
- }
- /*
- ** Record the successful parse in the cache.
- */
- locale_buf = lbuf;
-
- return &localebuf;
-
-bad_lbuf:
- free(lbuf);
-bad_locale:
- (void) close(fd);
-no_locale:
- localebuf = C_time_locale;
- locale_buf = NULL;
- return &localebuf;
-}
-#endif /* defined LOCALE_HOME */
Copied: vendor/tzcode/2016f/strftime.c (from rev 7736, vendor/tzcode/dist/strftime.c)
===================================================================
--- vendor/tzcode/2016f/strftime.c (rev 0)
+++ vendor/tzcode/2016f/strftime.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,626 @@
+/* Convert a broken-down time stamp to a string. */
+
+/* Copyright 1989 The Regents of the University of California.
+ All rights reserved.
+
+ Redistribution and use in source and binary forms, with or without
+ modification, are permitted provided that the following conditions
+ are met:
+ 1. Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+ 2. Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+ 3. Neither the name of the University nor the names of its contributors
+ may be used to endorse or promote products derived from this software
+ without specific prior written permission.
+
+ THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
+ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ SUCH DAMAGE. */
+
+/*
+** Based on the UCB version with the copyright notice appearing above.
+**
+** This is ANSIish only when "multibyte character == plain character".
+*/
+
+#include "private.h"
+
+#include "tzfile.h"
+#include "fcntl.h"
+#include "locale.h"
+
+struct lc_time_T {
+ const char * mon[MONSPERYEAR];
+ const char * month[MONSPERYEAR];
+ const char * wday[DAYSPERWEEK];
+ const char * weekday[DAYSPERWEEK];
+ const char * X_fmt;
+ const char * x_fmt;
+ const char * c_fmt;
+ const char * am;
+ const char * pm;
+ const char * date_fmt;
+};
+
+#define Locale (&C_time_locale)
+
+static const struct lc_time_T C_time_locale = {
+ {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ }, {
+ "January", "February", "March", "April", "May", "June",
+ "July", "August", "September", "October", "November", "December"
+ }, {
+ "Sun", "Mon", "Tue", "Wed",
+ "Thu", "Fri", "Sat"
+ }, {
+ "Sunday", "Monday", "Tuesday", "Wednesday",
+ "Thursday", "Friday", "Saturday"
+ },
+
+ /* X_fmt */
+ "%H:%M:%S",
+
+ /*
+ ** x_fmt
+ ** C99 requires this format.
+ ** Using just numbers (as here) makes Quakers happier;
+ ** it's also compatible with SVR4.
+ */
+ "%m/%d/%y",
+
+ /*
+ ** c_fmt
+ ** C99 requires this format.
+ ** Previously this code used "%D %X", but we now conform to C99.
+ ** Note that
+ ** "%a %b %d %H:%M:%S %Y"
+ ** is used by Solaris 2.3.
+ */
+ "%a %b %e %T %Y",
+
+ /* am */
+ "AM",
+
+ /* pm */
+ "PM",
+
+ /* date_fmt */
+ "%a %b %e %H:%M:%S %Z %Y"
+};
+
+static char * _add(const char *, char *, const char *);
+static char * _conv(int, const char *, char *, const char *);
+static char * _fmt(const char *, const struct tm *, char *, const char *,
+ int *);
+static char * _yconv(int, int, bool, bool, char *, char const *);
+
+#if !HAVE_POSIX_DECLS
+extern char * tzname[];
+#endif
+
+#ifndef YEAR_2000_NAME
+#define YEAR_2000_NAME "CHECK_STRFTIME_FORMATS_FOR_TWO_DIGIT_YEARS"
+#endif /* !defined YEAR_2000_NAME */
+
+#define IN_NONE 0
+#define IN_SOME 1
+#define IN_THIS 2
+#define IN_ALL 3
+
+#if HAVE_STRFTIME_L
+size_t
+strftime_l(char *s, size_t maxsize, char const *format, struct tm const *t,
+ locale_t locale)
+{
+ /* Just call strftime, as only the C locale is supported. */
+ return strftime(s, maxsize, format, t);
+}
+#endif
+
+size_t
+strftime(char *s, size_t maxsize, const char *format, const struct tm *t)
+{
+ char * p;
+ int warn;
+
+ tzset();
+ warn = IN_NONE;
+ p = _fmt(((format == NULL) ? "%c" : format), t, s, s + maxsize, &warn);
+#ifndef NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU
+ if (warn != IN_NONE && getenv(YEAR_2000_NAME) != NULL) {
+ fprintf(stderr, "\n");
+ if (format == NULL)
+ fprintf(stderr, "NULL strftime format ");
+ else fprintf(stderr, "strftime format \"%s\" ",
+ format);
+ fprintf(stderr, "yields only two digits of years in ");
+ if (warn == IN_SOME)
+ fprintf(stderr, "some locales");
+ else if (warn == IN_THIS)
+ fprintf(stderr, "the current locale");
+ else fprintf(stderr, "all locales");
+ fprintf(stderr, "\n");
+ }
+#endif /* !defined NO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU */
+ if (p == s + maxsize)
+ return 0;
+ *p = '\0';
+ return p - s;
+}
+
+static char *
+_fmt(const char *format, const struct tm *t, char *pt,
+ const char *ptlim, int *warnp)
+{
+ for ( ; *format; ++format) {
+ if (*format == '%') {
+label:
+ switch (*++format) {
+ case '\0':
+ --format;
+ break;
+ case 'A':
+ pt = _add((t->tm_wday < 0 ||
+ t->tm_wday >= DAYSPERWEEK) ?
+ "?" : Locale->weekday[t->tm_wday],
+ pt, ptlim);
+ continue;
+ case 'a':
+ pt = _add((t->tm_wday < 0 ||
+ t->tm_wday >= DAYSPERWEEK) ?
+ "?" : Locale->wday[t->tm_wday],
+ pt, ptlim);
+ continue;
+ case 'B':
+ pt = _add((t->tm_mon < 0 ||
+ t->tm_mon >= MONSPERYEAR) ?
+ "?" : Locale->month[t->tm_mon],
+ pt, ptlim);
+ continue;
+ case 'b':
+ case 'h':
+ pt = _add((t->tm_mon < 0 ||
+ t->tm_mon >= MONSPERYEAR) ?
+ "?" : Locale->mon[t->tm_mon],
+ pt, ptlim);
+ continue;
+ case 'C':
+ /*
+ ** %C used to do a...
+ ** _fmt("%a %b %e %X %Y", t);
+ ** ...whereas now POSIX 1003.2 calls for
+ ** something completely different.
+ ** (ado, 1993-05-24)
+ */
+ pt = _yconv(t->tm_year, TM_YEAR_BASE,
+ true, false, pt, ptlim);
+ continue;
+ case 'c':
+ {
+ int warn2 = IN_SOME;
+
+ pt = _fmt(Locale->c_fmt, t, pt, ptlim, &warn2);
+ if (warn2 == IN_ALL)
+ warn2 = IN_THIS;
+ if (warn2 > *warnp)
+ *warnp = warn2;
+ }
+ continue;
+ case 'D':
+ pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
+ continue;
+ case 'd':
+ pt = _conv(t->tm_mday, "%02d", pt, ptlim);
+ continue;
+ case 'E':
+ case 'O':
+ /*
+ ** C99 locale modifiers.
+ ** The sequences
+ ** %Ec %EC %Ex %EX %Ey %EY
+ ** %Od %oe %OH %OI %Om %OM
+ ** %OS %Ou %OU %OV %Ow %OW %Oy
+ ** are supposed to provide alternate
+ ** representations.
+ */
+ goto label;
+ case 'e':
+ pt = _conv(t->tm_mday, "%2d", pt, ptlim);
+ continue;
+ case 'F':
+ pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
+ continue;
+ case 'H':
+ pt = _conv(t->tm_hour, "%02d", pt, ptlim);
+ continue;
+ case 'I':
+ pt = _conv((t->tm_hour % 12) ?
+ (t->tm_hour % 12) : 12,
+ "%02d", pt, ptlim);
+ continue;
+ case 'j':
+ pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
+ continue;
+ case 'k':
+ /*
+ ** This used to be...
+ ** _conv(t->tm_hour % 12 ?
+ ** t->tm_hour % 12 : 12, 2, ' ');
+ ** ...and has been changed to the below to
+ ** match SunOS 4.1.1 and Arnold Robbins'
+ ** strftime version 3.0. That is, "%k" and
+ ** "%l" have been swapped.
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv(t->tm_hour, "%2d", pt, ptlim);
+ continue;
+#ifdef KITCHEN_SINK
+ case 'K':
+ /*
+ ** After all this time, still unclaimed!
+ */
+ pt = _add("kitchen sink", pt, ptlim);
+ continue;
+#endif /* defined KITCHEN_SINK */
+ case 'l':
+ /*
+ ** This used to be...
+ ** _conv(t->tm_hour, 2, ' ');
+ ** ...and has been changed to the below to
+ ** match SunOS 4.1.1 and Arnold Robbin's
+ ** strftime version 3.0. That is, "%k" and
+ ** "%l" have been swapped.
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv((t->tm_hour % 12) ?
+ (t->tm_hour % 12) : 12,
+ "%2d", pt, ptlim);
+ continue;
+ case 'M':
+ pt = _conv(t->tm_min, "%02d", pt, ptlim);
+ continue;
+ case 'm':
+ pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
+ continue;
+ case 'n':
+ pt = _add("\n", pt, ptlim);
+ continue;
+ case 'p':
+ pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
+ Locale->pm :
+ Locale->am,
+ pt, ptlim);
+ continue;
+ case 'R':
+ pt = _fmt("%H:%M", t, pt, ptlim, warnp);
+ continue;
+ case 'r':
+ pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
+ continue;
+ case 'S':
+ pt = _conv(t->tm_sec, "%02d", pt, ptlim);
+ continue;
+ case 's':
+ {
+ struct tm tm;
+ char buf[INT_STRLEN_MAXIMUM(
+ time_t) + 1];
+ time_t mkt;
+
+ tm = *t;
+ mkt = mktime(&tm);
+ if (TYPE_SIGNED(time_t))
+ sprintf(buf, "%"PRIdMAX,
+ (intmax_t) mkt);
+ else sprintf(buf, "%"PRIuMAX,
+ (uintmax_t) mkt);
+ pt = _add(buf, pt, ptlim);
+ }
+ continue;
+ case 'T':
+ pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
+ continue;
+ case 't':
+ pt = _add("\t", pt, ptlim);
+ continue;
+ case 'U':
+ pt = _conv((t->tm_yday + DAYSPERWEEK -
+ t->tm_wday) / DAYSPERWEEK,
+ "%02d", pt, ptlim);
+ continue;
+ case 'u':
+ /*
+ ** From Arnold Robbins' strftime version 3.0:
+ ** "ISO 8601: Weekday as a decimal number
+ ** [1 (Monday) - 7]"
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv((t->tm_wday == 0) ?
+ DAYSPERWEEK : t->tm_wday,
+ "%d", pt, ptlim);
+ continue;
+ case 'V': /* ISO 8601 week number */
+ case 'G': /* ISO 8601 year (four digits) */
+ case 'g': /* ISO 8601 year (two digits) */
+/*
+** From Arnold Robbins' strftime version 3.0: "the week number of the
+** year (the first Monday as the first day of week 1) as a decimal number
+** (01-53)."
+** (ado, 1993-05-24)
+**
+** From <http://www.ft.uni-erlangen.de/~mskuhn/iso-time.html> by Markus Kuhn:
+** "Week 01 of a year is per definition the first week which has the
+** Thursday in this year, which is equivalent to the week which contains
+** the fourth day of January. In other words, the first week of a new year
+** is the week which has the majority of its days in the new year. Week 01
+** might also contain days from the previous year and the week before week
+** 01 of a year is the last week (52 or 53) of the previous year even if
+** it contains days from the new year. A week starts with Monday (day 1)
+** and ends with Sunday (day 7). For example, the first week of the year
+** 1997 lasts from 1996-12-30 to 1997-01-05..."
+** (ado, 1996-01-02)
+*/
+ {
+ int year;
+ int base;
+ int yday;
+ int wday;
+ int w;
+
+ year = t->tm_year;
+ base = TM_YEAR_BASE;
+ yday = t->tm_yday;
+ wday = t->tm_wday;
+ for ( ; ; ) {
+ int len;
+ int bot;
+ int top;
+
+ len = isleap_sum(year, base) ?
+ DAYSPERLYEAR :
+ DAYSPERNYEAR;
+ /*
+ ** What yday (-3 ... 3) does
+ ** the ISO year begin on?
+ */
+ bot = ((yday + 11 - wday) %
+ DAYSPERWEEK) - 3;
+ /*
+ ** What yday does the NEXT
+ ** ISO year begin on?
+ */
+ top = bot -
+ (len % DAYSPERWEEK);
+ if (top < -3)
+ top += DAYSPERWEEK;
+ top += len;
+ if (yday >= top) {
+ ++base;
+ w = 1;
+ break;
+ }
+ if (yday >= bot) {
+ w = 1 + ((yday - bot) /
+ DAYSPERWEEK);
+ break;
+ }
+ --base;
+ yday += isleap_sum(year, base) ?
+ DAYSPERLYEAR :
+ DAYSPERNYEAR;
+ }
+#ifdef XPG4_1994_04_09
+ if ((w == 52 &&
+ t->tm_mon == TM_JANUARY) ||
+ (w == 1 &&
+ t->tm_mon == TM_DECEMBER))
+ w = 53;
+#endif /* defined XPG4_1994_04_09 */
+ if (*format == 'V')
+ pt = _conv(w, "%02d",
+ pt, ptlim);
+ else if (*format == 'g') {
+ *warnp = IN_ALL;
+ pt = _yconv(year, base,
+ false, true,
+ pt, ptlim);
+ } else pt = _yconv(year, base,
+ true, true,
+ pt, ptlim);
+ }
+ continue;
+ case 'v':
+ /*
+ ** From Arnold Robbins' strftime version 3.0:
+ ** "date as dd-bbb-YYYY"
+ ** (ado, 1993-05-24)
+ */
+ pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
+ continue;
+ case 'W':
+ pt = _conv((t->tm_yday + DAYSPERWEEK -
+ (t->tm_wday ?
+ (t->tm_wday - 1) :
+ (DAYSPERWEEK - 1))) / DAYSPERWEEK,
+ "%02d", pt, ptlim);
+ continue;
+ case 'w':
+ pt = _conv(t->tm_wday, "%d", pt, ptlim);
+ continue;
+ case 'X':
+ pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
+ continue;
+ case 'x':
+ {
+ int warn2 = IN_SOME;
+
+ pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
+ if (warn2 == IN_ALL)
+ warn2 = IN_THIS;
+ if (warn2 > *warnp)
+ *warnp = warn2;
+ }
+ continue;
+ case 'y':
+ *warnp = IN_ALL;
+ pt = _yconv(t->tm_year, TM_YEAR_BASE,
+ false, true,
+ pt, ptlim);
+ continue;
+ case 'Y':
+ pt = _yconv(t->tm_year, TM_YEAR_BASE,
+ true, true,
+ pt, ptlim);
+ continue;
+ case 'Z':
+#ifdef TM_ZONE
+ pt = _add(t->TM_ZONE, pt, ptlim);
+#else
+ if (t->tm_isdst >= 0)
+ pt = _add(tzname[t->tm_isdst != 0],
+ pt, ptlim);
+#endif
+ /*
+ ** C99 says that %Z must be replaced by the
+ ** empty string if the time zone is not
+ ** determinable.
+ */
+ continue;
+ case 'z':
+ {
+ long diff;
+ char const * sign;
+
+ if (t->tm_isdst < 0)
+ continue;
+#ifdef TM_GMTOFF
+ diff = t->TM_GMTOFF;
+#else /* !defined TM_GMTOFF */
+ /*
+ ** C99 says that the UT offset must
+ ** be computed by looking only at
+ ** tm_isdst. This requirement is
+ ** incorrect, since it means the code
+ ** must rely on magic (in this case
+ ** altzone and timezone), and the
+ ** magic might not have the correct
+ ** offset. Doing things correctly is
+ ** tricky and requires disobeying C99;
+ ** see GNU C strftime for details.
+ ** For now, punt and conform to the
+ ** standard, even though it's incorrect.
+ **
+ ** C99 says that %z must be replaced by the
+ ** empty string if the time zone is not
+ ** determinable, so output nothing if the
+ ** appropriate variables are not available.
+ */
+ if (t->tm_isdst == 0)
+#ifdef USG_COMPAT
+ diff = -timezone;
+#else /* !defined USG_COMPAT */
+ continue;
+#endif /* !defined USG_COMPAT */
+ else
+#ifdef ALTZONE
+ diff = -altzone;
+#else /* !defined ALTZONE */
+ continue;
+#endif /* !defined ALTZONE */
+#endif /* !defined TM_GMTOFF */
+ if (diff < 0) {
+ sign = "-";
+ diff = -diff;
+ } else sign = "+";
+ pt = _add(sign, pt, ptlim);
+ diff /= SECSPERMIN;
+ diff = (diff / MINSPERHOUR) * 100 +
+ (diff % MINSPERHOUR);
+ pt = _conv(diff, "%04d", pt, ptlim);
+ }
+ continue;
+ case '+':
+ pt = _fmt(Locale->date_fmt, t, pt, ptlim,
+ warnp);
+ continue;
+ case '%':
+ /*
+ ** X311J/88-090 (4.12.3.5): if conversion char is
+ ** undefined, behavior is undefined. Print out the
+ ** character itself as printf(3) also does.
+ */
+ default:
+ break;
+ }
+ }
+ if (pt == ptlim)
+ break;
+ *pt++ = *format;
+ }
+ return pt;
+}
+
+static char *
+_conv(int n, const char *format, char *pt, const char *ptlim)
+{
+ char buf[INT_STRLEN_MAXIMUM(int) + 1];
+
+ sprintf(buf, format, n);
+ return _add(buf, pt, ptlim);
+}
+
+static char *
+_add(const char *str, char *pt, const char *ptlim)
+{
+ while (pt < ptlim && (*pt = *str++) != '\0')
+ ++pt;
+ return pt;
+}
+
+/*
+** POSIX and the C Standard are unclear or inconsistent about
+** what %C and %y do if the year is negative or exceeds 9999.
+** Use the convention that %C concatenated with %y yields the
+** same output as %Y, and that %Y contains at least 4 bytes,
+** with more only if necessary.
+*/
+
+static char *
+_yconv(int a, int b, bool convert_top, bool convert_yy,
+ char *pt, const char *ptlim)
+{
+ register int lead;
+ register int trail;
+
+#define DIVISOR 100
+ trail = a % DIVISOR + b % DIVISOR;
+ lead = a / DIVISOR + b / DIVISOR + trail / DIVISOR;
+ trail %= DIVISOR;
+ if (trail < 0 && lead > 0) {
+ trail += DIVISOR;
+ --lead;
+ } else if (lead < 0 && trail > 0) {
+ trail -= DIVISOR;
+ ++lead;
+ }
+ if (convert_top) {
+ if (lead == 0 && trail < 0)
+ pt = _add("-0", pt, ptlim);
+ else pt = _conv(lead, "%02d", pt, ptlim);
+ }
+ if (convert_yy)
+ pt = _conv(((trail < 0) ? -trail : trail), "%02d", pt, ptlim);
+ return pt;
+}
Deleted: vendor/tzcode/2016f/time2posix.3
===================================================================
--- vendor/tzcode/dist/time2posix.3 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/time2posix.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,120 +0,0 @@
-.TH TIME2POSIX 3
-.SH NAME
-time2posix, posix2time \- convert seconds since the Epoch
-.SH SYNOPSIS
-.nf
-.B #include <sys/types.h>
-.B #include <time.h>
-.PP
-.B time_t time2posix(t)
-.B time_t t
-.PP
-.B time_t posix2time(t)
-.B time_t t
-.PP
-.B cc ... -ltz
-.fi
-.SH DESCRIPTION
-IEEE Standard 1003.1
-(POSIX)
-legislates that a time_t value of
-536457599 shall correspond to "Wed Dec 31 23:59:59 UTC 1986."
-This effectively implies that POSIX time_t's cannot include leap
-seconds and,
-therefore,
-that the system time must be adjusted as each leap occurs.
-.PP
-If the time package is configured with leap-second support
-enabled,
-however,
-no such adjustment is needed and
-time_t values continue to increase over leap events
-(as a true `seconds since...' value).
-This means that these values will differ from those required by POSIX
-by the net number of leap seconds inserted since the Epoch.
-.PP
-Typically this is not a problem as the type time_t is intended
-to be
-(mostly)
-opaque\(emtime_t values should only be obtained-from and
-passed-to functions such as
-.IR time(2) ,
-.IR localtime(3) ,
-.IR mktime(3) ,
-and
-.IR difftime(3) .
-However,
-POSIX gives an arithmetic
-expression for directly computing a time_t value from a given date/time,
-and the same relationship is assumed by some
-(usually older)
-applications.
-Any programs creating/dissecting time_t's
-using such a relationship will typically not handle intervals
-over leap seconds correctly.
-.PP
-The
-.I time2posix
-and
-.I posix2time
-functions are provided to address this time_t mismatch by converting
-between local time_t values and their POSIX equivalents.
-This is done by accounting for the number of time-base changes that
-would have taken place on a POSIX system as leap seconds were inserted
-or deleted.
-These converted values can then be used in lieu of correcting the older
-applications,
-or when communicating with POSIX-compliant systems.
-.PP
-.I Time2posix
-is single-valued.
-That is,
-every local time_t
-corresponds to a single POSIX time_t.
-.I Posix2time
-is less well-behaved:
-for a positive leap second hit the result is not unique,
-and for a negative leap second hit the corresponding
-POSIX time_t doesn't exist so an adjacent value is returned.
-Both of these are good indicators of the inferiority of the
-POSIX representation.
-.PP
-The following table summarizes the relationship between a time
-T and it's conversion to,
-and back from,
-the POSIX representation over the leap second inserted at the end of June,
-1993.
-.nf
-.ta \w'93/06/30 'u +\w'23:59:59 'u +\w'A+0 'u +\w'X=time2posix(T) 'u
-DATE TIME T X=time2posix(T) posix2time(X)
-93/06/30 23:59:59 A+0 B+0 A+0
-93/06/30 23:59:60 A+1 B+1 A+1 or A+2
-93/07/01 00:00:00 A+2 B+1 A+1 or A+2
-93/07/01 00:00:01 A+3 B+2 A+3
-
-A leap second deletion would look like...
-
-DATE TIME T X=time2posix(T) posix2time(X)
-??/06/30 23:59:58 A+0 B+0 A+0
-??/07/01 00:00:00 A+1 B+2 A+1
-??/07/01 00:00:01 A+2 B+3 A+2
-.sp
-.ce
- [Note: posix2time(B+1) => A+0 or A+1]
-.fi
-.PP
-If leap-second support is not enabled,
-local time_t's and
-POSIX time_t's are equivalent,
-and both
-.I time2posix
-and
-.I posix2time
-degenerate to the identity function.
-.SH SEE ALSO
-difftime(3),
-localtime(3),
-mktime(3),
-time(2)
-.\" This file is in the public domain, so clarified as of
-.\" 1996-06-05 by Arthur David Olson.
Copied: vendor/tzcode/2016f/time2posix.3 (from rev 7736, vendor/tzcode/dist/time2posix.3)
===================================================================
--- vendor/tzcode/2016f/time2posix.3 (rev 0)
+++ vendor/tzcode/2016f/time2posix.3 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,129 @@
+.TH TIME2POSIX 3
+.SH NAME
+time2posix, posix2time \- convert seconds since the Epoch
+.SH SYNOPSIS
+.nf
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B #include <time.h>
+.PP
+.B time_t time2posix(time_t t);
+.PP
+.B time_t posix2time(time_t t);
+.PP
+.B cc ... \*-ltz
+.fi
+.SH DESCRIPTION
+.ie '\(en'' .ds en \-
+.el .ds en \(en
+.ie '\(lq'' .ds lq \&"\"
+.el .ds lq \(lq\"
+.ie '\(rq'' .ds rq \&"\"
+.el .ds rq \(rq\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+IEEE Standard 1003.1
+(POSIX)
+requires the time_t value 536457599 to stand for 1986-12-31 23:59:59 UTC.
+This effectively implies that POSIX time_t values cannot include leap
+seconds and,
+therefore,
+that the system time must be adjusted as each leap occurs.
+.PP
+If the time package is configured with leap-second support
+enabled,
+however,
+no such adjustment is needed and
+time_t values continue to increase over leap events
+(as a true
+.q "seconds since..."
+value).
+This means that these values will differ from those required by POSIX
+by the net number of leap seconds inserted since the Epoch.
+.PP
+Typically this is not a problem as the type time_t is intended
+to be
+(mostly)
+opaque \*(en time_t values should only be obtained-from and
+passed-to functions such as
+.IR time(2) ,
+.IR localtime(3) ,
+.IR mktime(3) ,
+and
+.IR difftime(3) .
+However,
+POSIX gives an arithmetic
+expression for directly computing a time_t value from a given date/time,
+and the same relationship is assumed by some
+(usually older)
+applications.
+Any programs creating/dissecting time_t's
+using such a relationship will typically not handle intervals
+over leap seconds correctly.
+.PP
+The
+.I time2posix
+and
+.I posix2time
+functions are provided to address this time_t mismatch by converting
+between local time_t values and their POSIX equivalents.
+This is done by accounting for the number of time-base changes that
+would have taken place on a POSIX system as leap seconds were inserted
+or deleted.
+These converted values can then be used in lieu of correcting the older
+applications,
+or when communicating with POSIX-compliant systems.
+.PP
+.I Time2posix
+is single-valued.
+That is,
+every local time_t
+corresponds to a single POSIX time_t.
+.I Posix2time
+is less well-behaved:
+for a positive leap second hit the result is not unique,
+and for a negative leap second hit the corresponding
+POSIX time_t doesn't exist so an adjacent value is returned.
+Both of these are good indicators of the inferiority of the
+POSIX representation.
+.PP
+The following table summarizes the relationship between a time
+T and it's conversion to,
+and back from,
+the POSIX representation over the leap second inserted at the end of June,
+1993.
+.nf
+.ta \w'93/06/30 'u +\w'23:59:59 'u +\w'A+0 'u +\w'X=time2posix(T) 'u
+DATE TIME T X=time2posix(T) posix2time(X)
+93/06/30 23:59:59 A+0 B+0 A+0
+93/06/30 23:59:60 A+1 B+1 A+1 or A+2
+93/07/01 00:00:00 A+2 B+1 A+1 or A+2
+93/07/01 00:00:01 A+3 B+2 A+3
+
+A leap second deletion would look like...
+
+DATE TIME T X=time2posix(T) posix2time(X)
+??/06/30 23:59:58 A+0 B+0 A+0
+??/07/01 00:00:00 A+1 B+2 A+1
+??/07/01 00:00:01 A+2 B+3 A+2
+.sp
+.ce
+ [Note: posix2time(B+1) => A+0 or A+1]
+.fi
+.PP
+If leap-second support is not enabled,
+local time_t's and
+POSIX time_t's are equivalent,
+and both
+.I time2posix
+and
+.I posix2time
+degenerate to the identity function.
+.SH SEE ALSO
+difftime(3),
+localtime(3),
+mktime(3),
+time(2)
+.\" This file is in the public domain, so clarified as of
+.\" 1996-06-05 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/time2posix.3.txt
===================================================================
--- vendor/tzcode/dist/time2posix.3.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/time2posix.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,80 +0,0 @@
-TIME2POSIX(3) TIME2POSIX(3)
-
-NAME
- time2posix, posix2time - convert seconds since the Epoch
-
-SYNOPSIS
- #include <sys/types.h>
- #include <time.h>
-
- time_t time2posix(t)
- time_t t
-
- time_t posix2time(t)
- time_t t
-
- cc ... -ltz
-
-DESCRIPTION
- IEEE Standard 1003.1 (POSIX) legislates that a time_t value of
- 536457599 shall correspond to "Wed Dec 31 23:59:59 UTC 1986." This
- effectively implies that POSIX time_t's cannot include leap seconds
- and, therefore, that the system time must be adjusted as each leap
- occurs.
-
- If the time package is configured with leap-second support enabled,
- however, no such adjustment is needed and time_t values continue to
- increase over leap events (as a true `seconds since...' value). This
- means that these values will differ from those required by POSIX by the
- net number of leap seconds inserted since the Epoch.
-
- Typically this is not a problem as the type time_t is intended to be
- (mostly) opaque--time_t values should only be obtained-from and passed-
- to functions such as time(2), localtime(3), mktime(3), and difftime(3).
- However, POSIX gives an arithmetic expression for directly computing a
- time_t value from a given date/time, and the same relationship is
- assumed by some (usually older) applications. Any programs
- creating/dissecting time_t's using such a relationship will typically
- not handle intervals over leap seconds correctly.
-
- The time2posix and posix2time functions are provided to address this
- time_t mismatch by converting between local time_t values and their
- POSIX equivalents. This is done by accounting for the number of time-
- base changes that would have taken place on a POSIX system as leap
- seconds were inserted or deleted. These converted values can then be
- used in lieu of correcting the older applications, or when
- communicating with POSIX-compliant systems.
-
- Time2posix is single-valued. That is, every local time_t corresponds
- to a single POSIX time_t. Posix2time is less well-behaved: for a
- positive leap second hit the result is not unique, and for a negative
- leap second hit the corresponding POSIX time_t doesn't exist so an
- adjacent value is returned. Both of these are good indicators of the
- inferiority of the POSIX representation.
-
- The following table summarizes the relationship between a time T and
- it's conversion to, and back from, the POSIX representation over the
- leap second inserted at the end of June, 1993.
- DATE TIME T X=time2posix(T) posix2time(X)
- 93/06/30 23:59:59 A+0 B+0 A+0
- 93/06/30 23:59:60 A+1 B+1 A+1 or A+2
- 93/07/01 00:00:00 A+2 B+1 A+1 or A+2
- 93/07/01 00:00:01 A+3 B+2 A+3
-
- A leap second deletion would look like...
-
- DATE TIME T X=time2posix(T) posix2time(X)
- ??/06/30 23:59:58 A+0 B+0 A+0
- ??/07/01 00:00:00 A+1 B+2 A+1
- ??/07/01 00:00:01 A+2 B+3 A+2
-
- [Note: posix2time(B+1) => A+0 or A+1]
-
- If leap-second support is not enabled, local time_t's and POSIX
- time_t's are equivalent, and both time2posix and posix2time degenerate
- to the identity function.
-
-SEE ALSO
- difftime(3), localtime(3), mktime(3), time(2)
-
- TIME2POSIX(3)
Copied: vendor/tzcode/2016f/time2posix.3.txt (from rev 7736, vendor/tzcode/dist/time2posix.3.txt)
===================================================================
--- vendor/tzcode/2016f/time2posix.3.txt (rev 0)
+++ vendor/tzcode/2016f/time2posix.3.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,76 @@
+TIME2POSIX(3) Library Functions Manual TIME2POSIX(3)
+
+NAME
+ time2posix, posix2time - convert seconds since the Epoch
+
+SYNOPSIS
+ #include <time.h>
+
+ time_t time2posix(time_t t);
+
+ time_t posix2time(time_t t);
+
+ cc ... -ltz
+
+DESCRIPTION
+ IEEE Standard 1003.1 (POSIX) requires the time_t value 536457599 to
+ stand for 1986-12-31 23:59:59 UTC. This effectively implies that POSIX
+ time_t values cannot include leap seconds and, therefore, that the
+ system time must be adjusted as each leap occurs.
+
+ If the time package is configured with leap-second support enabled,
+ however, no such adjustment is needed and time_t values continue to
+ increase over leap events (as a true "seconds since..." value). This
+ means that these values will differ from those required by POSIX by the
+ net number of leap seconds inserted since the Epoch.
+
+ Typically this is not a problem as the type time_t is intended to be
+ (mostly) opaque - time_t values should only be obtained-from and
+ passed-to functions such as time(2), localtime(3), mktime(3), and
+ difftime(3). However, POSIX gives an arithmetic expression for
+ directly computing a time_t value from a given date/time, and the same
+ relationship is assumed by some (usually older) applications. Any
+ programs creating/dissecting time_t's using such a relationship will
+ typically not handle intervals over leap seconds correctly.
+
+ The time2posix and posix2time functions are provided to address this
+ time_t mismatch by converting between local time_t values and their
+ POSIX equivalents. This is done by accounting for the number of time-
+ base changes that would have taken place on a POSIX system as leap
+ seconds were inserted or deleted. These converted values can then be
+ used in lieu of correcting the older applications, or when
+ communicating with POSIX-compliant systems.
+
+ Time2posix is single-valued. That is, every local time_t corresponds
+ to a single POSIX time_t. Posix2time is less well-behaved: for a
+ positive leap second hit the result is not unique, and for a negative
+ leap second hit the corresponding POSIX time_t doesn't exist so an
+ adjacent value is returned. Both of these are good indicators of the
+ inferiority of the POSIX representation.
+
+ The following table summarizes the relationship between a time T and
+ it's conversion to, and back from, the POSIX representation over the
+ leap second inserted at the end of June, 1993.
+ DATE TIME T X=time2posix(T) posix2time(X)
+ 93/06/30 23:59:59 A+0 B+0 A+0
+ 93/06/30 23:59:60 A+1 B+1 A+1 or A+2
+ 93/07/01 00:00:00 A+2 B+1 A+1 or A+2
+ 93/07/01 00:00:01 A+3 B+2 A+3
+
+ A leap second deletion would look like...
+
+ DATE TIME T X=time2posix(T) posix2time(X)
+ ??/06/30 23:59:58 A+0 B+0 A+0
+ ??/07/01 00:00:00 A+1 B+2 A+1
+ ??/07/01 00:00:01 A+2 B+3 A+2
+
+ [Note: posix2time(B+1) => A+0 or A+1]
+
+ If leap-second support is not enabled, local time_t's and POSIX
+ time_t's are equivalent, and both time2posix and posix2time degenerate
+ to the identity function.
+
+SEE ALSO
+ difftime(3), localtime(3), mktime(3), time(2)
+
+ TIME2POSIX(3)
Deleted: vendor/tzcode/2016f/tz-art.htm
===================================================================
--- vendor/tzcode/dist/tz-art.htm 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tz-art.htm 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,492 +0,0 @@
-<!DOCTYPE html
-PUBLIC "-//W3C//DTD HTML 4.01//EN"
-"http://www.w3.org/TR/html4/strict.dtd">
-<html>
-<head>
-<meta http-equiv="Content-type" content='text/html; charset="US-ASCII"'>
-<title>Time and the Arts</title>
-</head>
-<body>
-<h1>Time and the Arts</h1>
-<p>
-This file is in the public domain, so clarified as of
-2009-05-17 by Arthur David Olson.
-</p>
-<p>
-Please send corrections to this web page to the
-<a href="mailto:tz at iana.org">time zone mailing list</a>.</p>
-<p>
-See also <a href="tz-link.htm">Sources for Time Zone and Daylight Saving Time Data</a>.</p>
-<hr>
-<p>
-Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p>
-<table>
-<tr><td>Artist</td><td>Karrin Allyson</td></tr>
-<tr><td>CD</td><td>I Didn't Know About You</td></tr>
-<tr><td>Copyright Date</td><td>1993</td></tr>
-<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
-<tr><td>ID</td><td>CCD-4543</td></tr>
-<tr><td>Track Time</td><td>3:44</td></tr>
-<tr><td>Personnel</td><td>Karrin Allyson, vocal;
-Russ Long, piano;
-Gerald Spaits, bass;
-Todd Strait, drums</td></tr>
-<tr><td>Notes</td><td>CD notes "additional lyric by Karrin Allyson;
-arranged by Russ Long and Karrin Allyson"</td></tr>
-<tr><td>ADO Rating</td><td>1 star</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A1fdovw9ta92k">AMG Rating</a></td><td>4 stars</td></tr>
-<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Kevin Mahogany</td></tr>
-<tr><td>CD</td><td>Double Rainbow</td></tr>
-<tr><td>Copyright Date</td><td>1993</td></tr>
-<tr><td>Label</td><td>Enja Records</td></tr>
-<tr><td>ID</td><td>ENJ-7097 2</td></tr>
-<tr><td>Track Time</td><td>6:27</td></tr>
-<tr><td>Personnel</td><td>Kevin Mahogany, vocal;
-Kenny Barron, piano;
-Ray Drummond, bass;
-Ralph Moore, tenor saxophone;
-Lewis Nash, drums</td></tr>
-<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Akikbikzjbb19">AMG Rating</a></td><td>3 stars</td></tr>
-<tr><td>Penguin Rating</td><td>3 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Joe Williams</td></tr>
-<tr><td>CD</td><td>Here's to Life</td></tr>
-<tr><td>Copyright Date</td><td>1994</td></tr>
-<tr><td>Label</td><td>Telarc International Corporation</td></tr>
-<tr><td>ID</td><td>CD-83357</td></tr>
-<tr><td>Track Time</td><td>3:58</td></tr>
-<tr><td>Personnel</td><td>Joe Williams, vocal
-The Robert Farnon [39 piece] Orchestra</td></tr>
-<tr><td>Notes</td><td>This CD is also available as part of a 3-CD package from
-Telarc, "Triple Play" (CD-83461)</td></tr>
-<tr><td>ADO Rating</td><td>black dot</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Amyyvad6kt8w1">AMG Rating</a></td><td>2 stars</td></tr>
-<tr><td>Penguin Rating</td><td>3 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Charles Fambrough</td></tr>
-<tr><td>CD</td><td>Keeper of the Spirit</td></tr>
-<tr><td>Copyright Date</td><td>1995</td></tr>
-<tr><td>Label</td><td>AudioQuest Music</td></tr>
-<tr><td>ID</td><td>AQ-CD1033</td></tr>
-<tr><td>Track Time</td><td>7:07</td></tr>
-<tr><td>Personnel</td><td>Charles Fambrough, bass;
-Joel Levine, tenor recorder;
-Edward Simon, piano;
-Lenny White, drums;
-Marion Simon, percussion</td></tr>
-<tr><td>Notes</td><td>On-line information and samples available at
-<a href="http://wwmusic.com/~music/audioq/rel/1033.html">http://wwmusic.com/~music/audioq/rel/1033.html</a></td></tr>
-<tr><td>ADO Rating</td><td>2 stars</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A5rkcikcjbb89">AMG Rating</a></td><td>unrated</td></tr>
-<tr><td>Penguin Rating</td><td>3 stars</td></tr>
-</table>
-<hr>
-<p>Also of note:</p>
-<table>
-<tr><td>Artist</td><td>Holly Cole Trio</td></tr>
-<tr><td>CD</td><td>Blame It On My Youth</td></tr>
-<tr><td>Copyright Date</td><td>1992</td></tr>
-<tr><td>Label</td><td>Manhattan</td></tr>
-<tr><td>ID</td><td>CDP 7 97349 2</td></tr>
-<tr><td>Total Time</td><td>37:45</td></tr>
-<tr><td>Personnel</td><td>Holly Cole, voice;
-Aaron Davis, piano;
-David Piltch, string bass</td></tr>
-<tr><td>Notes</td><td>Lyrical reference to "Eastern Standard Time" in
-Tom Waits' "Purple Avenue"</td></tr>
-<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A3a9ds37ya3dg">AMG Rating</a></td><td>3 stars</td></tr>
-<tr><td>Penguin Rating</td><td>unrated</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Milt Hinton</td></tr>
-<tr><td>CD</td><td>Old Man Time</td></tr>
-<tr><td>Copyright Date</td><td>1990</td></tr>
-<tr><td>Label</td><td>Chiaroscuro</td></tr>
-<tr><td>ID</td><td>CR(D) 310</td></tr>
-<tr><td>Total Time</td><td>149:38 (two CDs)</td></tr>
-<tr><td>Personnel</td><td>Milt Hinton, bass;
-Doc Cheatham, Dizzy Gillespie, Clark Terry, trumpet;
-Al Grey, trombone;
-Eddie Barefield, Joe Camel (Flip Phillips), Buddy Tate,
-clarinet and saxophone;
-John Bunch, Red Richards, Norman Simmons, Derek Smith,
-Ralph Sutton, piano;
-Danny Barker, Al Casey, guitar;
-Gus Johnson, Gerryck King, Bob Rosengarden, Jackie Williams,
-drums;
-Lionel Hampton, vibraphone;
-Cab Calloway, Joe Williams, vocal;
-Buck Clayton, arrangements</td></tr>
-<tr><td>Notes</td><td>tunes include Old Man Time, Time After Time,
-Sometimes I'm Happy,
-A Hot Time in the Old Town Tonight,
-Four or Five Times, Now's the Time,
-Time on My Hands, This Time It's Us,
-and Good Time Charlie
-On-line samples available at
-<a href="http://www.chiaroscurojazz.com/albuminfo.php4?albumid=49">http://www.chiaroscurojazz.com/albuminfo.php3?albumid=49</a></td></tr>
-<tr><td>ADO Rating</td><td>3 stars</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A1cbyxdab8ola">AMG Rating</a></td><td>4.5 stars</td></tr>
-<tr><td>Penguin Rating</td><td>3 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Alan Broadbent</td></tr>
-<tr><td>CD</td><td>Pacific Standard Time</td></tr>
-<tr><td>Copyright Date</td><td>1995</td></tr>
-<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
-<tr><td>ID</td><td>CCD-4664</td></tr>
-<tr><td>Total Time</td><td>62:42</td></tr>
-<tr><td>Personnel</td><td>Alan Broadbent, piano;
-Putter Smith, Bass;
-Frank Gibson, Jr., drums</td></tr>
-<tr><td>Notes</td><td>The CD cover features an analemma for equation-of-time fans</td></tr>
-<tr><td>ADO Rating</td><td>1 star</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=Asl8zefuk8gfo">AMG Rating</a></td><td>4 stars</td></tr>
-<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Anthony Braxton/Richard Teitelbaum</td></tr>
-<tr><td>CD</td><td>Silence/Time Zones</td></tr>
-<tr><td>Copyright Date</td><td>1996</td></tr>
-<tr><td>Label</td><td>Black Lion</td></tr>
-<tr><td>ID</td><td>BLCD 760221</td></tr>
-<tr><td>Total Time</td><td>72:58</td></tr>
-<tr><td>Personnel</td><td>Anthony Braxton, sopranino and alto saxophones,
-contrebasse clarinet, miscellaneous instruments;
-Leo Smith, trumpet and miscellaneous instruments;
-Leroy Jenkins, violin and miscellaneous instruments;
-Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr>
-<tr><td>ADO Rating</td><td>black dot</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=A5bkvu3xjan1k">AMG Rating</a></td><td>unrated</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Charles Gayle</td></tr>
-<tr><td>CD</td><td>Time Zones</td></tr>
-<tr><td>Copyright Date</td><td>2006</td></tr>
-<tr><td>Label</td><td>Tompkins Square</td></tr>
-<tr><td>ID</td><td>TSQ2839</td></tr>
-<tr><td>Total Time</td><td>49:06</td></tr>
-<tr><td>Personnel</td><td>Charles Gayle, piano</td></tr>
-<tr><td>ADO Rating</td><td>1 star</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:13rc28vw054a">AMG Rating</a></td><td>4.5 stars</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>The Get Up Kids</td></tr>
-<tr><td>CD</td><td>Eudora</td></tr>
-<tr><td>Copyright Date</td><td>2001</td></tr>
-<tr><td>Label</td><td>Vagrant</td></tr>
-<tr><td>ID</td><td>357</td></tr>
-<tr><td>Total Time</td><td>65:12</td></tr>
-<tr><td>Notes</td><td>Includes the song "Central Standard Time." Thanks to Colin Bowern for this information.</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:7ddovwvla9xk">AMG Rating</a></td><td>2.5 stars</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>Coldplay</td></tr>
-<tr><td>Song</td><td>Clocks</td></tr>
-<tr><td>Copyright Date</td><td>2003</td></tr>
-<tr><td>Label</td><td>Capitol Records</td></tr>
-<tr><td>ID</td><td>52608</td></tr>
-<tr><td>Total Time</td><td>4:13</td></tr>
-<tr><td>Notes</td><td>Won the 2004 Record of the Year honor at the
-Grammy Awards. Co-written and performed by Chris Martin,
-great-great-grandson of DST inventor William Willett. The song's first
-line is "Lights go out and I can't be saved".</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>Irving Kahal and Harry Richman</td></tr>
-<tr><td>Song</td><td>There Ought to be a Moonlight Saving Time</td></tr>
-<tr><td>Copyright Date</td><td>1931</td>
-<tr><td>Notes</td><td>This musical standard was a #1 hit for Guy Lombardo
-in 1931, and was also performed by Maurice Chevalier, Blossom Dearie
-and many others. The phrase "Moonlight saving time" also appears in
-the 1995 country song "Not Enough Hours in the Night" written by Aaron
-Barker, Kim Williams and Rob Harbin and performed by Doug
-Supernaw.</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>The Microscopic Septet</td></tr>
-<tr><td>CD</td><td>Lobster Leaps In</td></tr>
-<tr><td>Copyright Date</td><td>2008</td></tr>
-<tr><td>Label</td><td>Cuneiform</td></tr>
-<tr><td>ID</td><td>272</td></tr>
-<tr><td>Total Time</td><td>73:05</td></tr>
-<tr><td>Notes</td><td>Includes the song "Twilight Time Zone."</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:w9fpxzykldje">AMG Rating</a></td><td>3.5 stars</td></tr>
-<tr><td>ADO Rating</td><td>2 stars</td></tr>
-
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>Bob Dylan</td></tr>
-<tr><td>CD</td><td>The Time They Are A-Changin'</td></tr>
-<tr><td>Copyright Date</td><td>1964</td></tr>
-<tr><td>Label</td><td>Columbia</td></tr>
-<tr><td>ID</td><td>CK-8905</td></tr>
-<tr><td>Total Time</td><td>45:36</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:gifqxqt5ld0e">AMG Rating</a></td><td>4.5 stars</td></tr>
-<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
-<tr><td>Notes<td>The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>Luciana Souza</td></tr>
-<tr><td>CD</td><td>Tide</td></tr>
-<tr><td>Copyright Date</td><td>2009</td></tr>
-<tr><td>Label</td><td>Universal Jazz France</td></tr>
-<tr><td>ID</td><td>B0012688-02</td></tr>
-<tr><td>Total Time</td><td>42:31</td></tr>
-<tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:3bftxzw0ldhe">AMG Rating</a></td><td>3.5 stars</td></tr>
-<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
-<tr><td>Notes<td>Includes the song "Fire and Wood" with the lyric
-"The clocks were turned back you remeber/Think it's still November."
-</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Ken Nordine</td></tr>
-<tr><td>CD</td><td>You're Getting Better: The Word Jazz Dot Masters</td></tr>
-<tr><td>Copyright Date</td><td>2005</td></tr>
-<tr><td>Label</td><td>Geffen</td></tr>
-<tr><td>ID</td><td>B0005171-02</td></tr>
-<tr><td>Total Time</td><td>156:22</td></tr>
-<tr><td>ADO Rating</td><td>1 star</td></tr>
-<tr><td><a href="http://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-masters+r105931">AMG Rating</a></td><td>4.5 stars</td></tr>
-<tr><td>Notes</td><td>Includes the piece "What Time Is It"
-("He knew what time it was everywhere...that counted").</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>The Lost Hour</td>
-<tr><td>TV series</td><td><em>Eerie, Indiana</em></td>
-<tr><td>TV episode number</td><td>10</td>
-<tr><td>Network</td><td>NBC</td>
-<tr><td>Air date</td><td>1991-12-01</td>
-<tr><td>Notes</td><td>Despite Indiana's then-lack of DST, Marshall changes his clock with unusual consequences.</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>Time Tunnel</td>
-<tr><td>TV series</td><td><em>The Adventures of Pete & Pete</em></td>
-<tr><td>TV episode number</td><td>5, season 2</td>
-<tr><td>Network</td><td>Nickelodeon</td>
-<tr><td>Air date</td><td>1994-10-23</td>
-<tr><td>Notes</td><td>The two Petes travel back in time an hour on the day that DST ends.</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>TV episode title</td><td>King-Size Homer</td>
-<tr><td>TV series</td><td><em>The Simpsons</em></td>
-<tr><td>TV episode number</td><td>135</td>
-<tr><td>Network</td><td>Fox</td>
-<tr><td>Air date</td><td>1995-11-05</td>
-<tr><td>Notes</td><td>Homer, working from home, remarks "8:58, first
-time I've ever been early for work. Except for all those daylight
-savings days. Lousy farmers."</td></tr>
-<tr><td> </td></tr>
-
-<tr><td>Artist</td><td>Jules Verne</td></tr>
-<tr><td>Book</td><td>Le Tour du Monde en Quatre-Vingts Jours
-(Around the World in Eighty Days)</td></tr>
-<tr><td>Notes</td><td>Wall-clock time plays a central role in the plot.
-European readers of the 1870s clearly held the U.S. press in
-deep contempt; the protagonists cross the U.S. without once
-reading a paper.
-An on-line French-language version of the book
-"with illustrations from the original 1873 French-language edition"
-is available at
-<a href="http://fourmilab.ch/etexts/www/tdm80j">http://fourmilab.ch/etexts/www/tdm80j</a>
-An on-line English-language translation of the book is available at
-<a href="http://www.literature.org/Works/Jules-Verne/eighty">http://www.literature.org/Works/Jules-Verne/eighty</a></td></tr>
-
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>Umberto Eco</td></tr>
-<tr><td>Book</td><td>The Island of the Day Before
-(L'isola del giorno prima)</td></tr>
-<tr><td>Copyright Date</td><td>1994</td></tr>
-<tr><td>Notes</td><td>
-"...the story of a 17th century Italian nobleman trapped near an island
-on the International Date Line. Time and time zones play an integral
-part in the novel." (Paul Eggert, 2006-04-22)
-</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>David Jebb</td></tr>
-<tr><td>Book</td><td><a href="http://www.thethirteenthtimezone.com">
-The Thirteenth Time Zone</a></td></tr>
-<tr><td>Notes</td><td>
-"It's fiction, but it's based on his experiences and travels." (Paul Eggert, 2006-04-22)
-</td></tr>
-<tr><td> </td></tr>
-<tr><td>Artist</td><td>John Dunning</td></tr>
-<tr><td>Book</td><td><a
-href="http://www.simonsays.com/content/book.cfm?sid=33&pid=479719">Two
-O'Clock, Eastern Wartime</a></td></tr>
-<tr><td>Copyright Date</td><td>2001</td></tr>
-<tr><td>Notes</td><td>
-Mystery, history, daylight saving time, and old-time radio.
-</td></tr>
-<tr><td> </td></tr>
-<tr><td>Film</td><td>Bell Science - About Time</td></tr>
-<tr><td>Notes</td><td>The Frank Baxter/Richard Deacon extravaganza.
-Information is available at
-<a href="http://www.videoflicks.com/titles/1035/1035893.htm">http://www.videoflicks.com/titles/1035/1035893.htm</a></td></tr>
-</table>
-<hr>
-<ul>
-<li>
-An episode of "The Adventures of Superman" entitled "The Mysterious
-Cube," first aired 1958-02-24, had Superman convincing the controllers
-of WWV to broadcast time signals five minutes ahead of actual time;
-doing so got a crook trying to beat the statute of limitations to
-emerge a bit too early from the titular enclosure.
-</li>
-<li>
-The 1960s ITC television series "The Prisoner" included an episode
-entitled "The Chimes of Big Ben" in which our protagonist tumbled to
-the fraudulent nature of a Poland-to-England escape upon hearing "Big
-Ben" chiming on Polish local time.
-</li>
-<li>
-The series "Seinfeld" included an episode entitled "The Susie," first
-broadcast 1997-02-13, in which Kramer decides that daylight saving time
-isn't coming fast enough, so he sets his watch ahead an hour.
-</li>
-<li>
-The syndicated comic strip "Dilbert" featured an all-too-rare example of
-time zone humor on 1998-03-14.
-</li>
-<li>
-Surrealist artist Guy Billout's work "Date Line" appeared on page 103
-of the 1999-11 Atlantic Monthly.
-</li>
-<li>
-"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of Time
-Magazine's 2002-11-11 issue; among other things, it proposed
-year-round DST as a way of lessening wintertime despair.
-</li>
-<li>
-The "20 Hours in America" episode of "The West Wing," first aired 2002-09-25,
-saw White House staffers stranded in Indiana; they thought they had time to
-catch Air Force One but were done in by intra-Indiana local time changes.
-</li>
-<li>
-"In what time zone would you find New York City?" was a $200 question on
-the 1999-11-13 United States airing of "Who Wants to Be a Millionaire?"
-"In 1883, what industry led the movement to divide the U.S. into four time
-zones?" was a $32,000 question on the 2001-05-23 United States airing of
-"Who Wants to Be a Millionaire?" At this rate, the million-dollar time-zone
-question should have been asked 2002-06-04.
-</li>
-<li>
-A private jet's mid-flight change of time zones distorts Alison Dubois'
-premonition in the "We Had a Dream" episode of "Medium"
-(originally aired 2007-02-28).
-</li>
-<li>
-In the "30 Rock" episode "Anna Howard Shaw Day" (first broadcast 2010-02-11),
-Jack Donaghy's date realizes that a Geneva-to-New-York business phone call
-received in the evening must be fake given the difference in local times.
-</li>
-<li>
-In the 1946 movie "A Matter of Life and Death"
-(U.S. title "Stairway to Heaven")
-there is a reference to British Double Summer Time.
-The time does not play a large part in the plot;
-it's just a passing reference to the time when one of the
-characters was supposed to have died (but didn't).
-The IMDb page is at
-<a href="http://us.imdb.com/title/tt0038733/">
-http://us.imdb.com/title/tt0038733/
-</a>. (Dave Cantor)
-<li>
-The 1953 railway comedy movie "The Titfield Thunderbolt" includes a
-play on words on British Double Summer Time. Valentine's wife wants
-him to leave the pub and asks him, "Do you know what time it is?"
-And he, happy where he is, replies: "Yes, my love. Summer double time."
-IMDB page:
-<a href="http://us.imdb.com/title/tt0046436/">
-http://us.imdb.com/title/tt0046436/
-</a>. (Mark Brader, 2009-10-02)
-</li>
-<li>
-The premise of the 1999 caper movie "Entrapment" involves computers
-in an international banking network being shut down briefly at
-midnight in each time zone to avoid any problems at the transition
-from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown
-is extended by 10 seconds, it will create a one-time opportunity for
-a gigantic computerized theft. To achieve this, at one location the
-crooks interfere with the microwave system supplying time signals to
-the computer, advancing the time by 0.1 second each minute over the
-last hour of 1999. (So this movie teaches us that 0.1 x 60 = 10.)
-IMDB page:
-<a href="http://us.imdb.com/title/tt0137494/">
-http://us.imdb.com/title/tt0137494/
-</a>. (Mark Brader, 2009-10-02)
-</li>
-<li>
-In "The Todd Couple" episode of "Outsourced" (first aired 2011-02-10),
-Manmeet sets up teledates for 6:00 and 9:00;
-since one is with a New Yorker and the other with a San Franciscan,
-hilarity ensues.
-</li>
-</ul>
-<hr>
-<ul>
-<li>
-"We're been using the five-cent nickle in this country since 1492.
-Now that's pretty near 100 years, daylight savings [sic]."
-(Groucho Marx as Captain Spaulding in "Animal Crackers", 1930,
-as noted by Will Fitzerald)
-</li>
-<li>
-Brady: "...[Bishop Usher] determined that the Lord began the Creation
-on the 23rd of October in the Year 4004 B.C. at -- uh, at 9 A.M.!"
-<br>
-Drummond: "That Eastern Standard Time? (Laughter) Or Rocky Mountain
-Time? (More laughter) It wasn't daylight-saving time, was it? Because
-the Lord didn't make the sun until the fourth day!"
-<br>
-(From the play "Inherit the Wind" by Jerome Lawrence and Robert E. Lee,
-filmed in 1960 with Spencer Tracy as Drummond and Fredric March as
-Brady, and several other times. Thanks to Mark Brader.)
-</li>
-<li>
-"Good news."
-"What did they do? Extend Daylight Saving Time year round?"
-(Professional tanner George Hamilton, in dialog from a
-May, 1999 episode of the syndicated television series "Baywatch")
-</li>
-<li>
-"A fundamental belief held by Americans is that if you are on land, you
-cannot be killed by a fish...So most Americans remain on land, believing
-they're safe. Unfortunately, this belief—like so many myths, such as that
-there's a reason for 'Daylight Saving Time'—is false."
-(Dave Barry column, 2000-07-02)
-</li>
-<li>
-"I once had sex for an hour and five minutes, but that was on the day
-when you turn the clocks ahead."
-(Garry Shandling, 52nd Annual Emmys, 2000-09-10)
-</li>
-<li>
-"Would it impress you if I told you I invented Daylight Savings Time?"
-("Sahjhan" to "Lilah" in dialog from the "Loyalty" episode of "Angel,"
-originally aired 2002-02-25)
-</li>
-<li>
-"I thought you said Tulsa was a three hour flight."
-"Well, you're forgetting about the time difference."
-("Chandler" and "Joey" in dialog from the episode of "Friends" first
-aired 2002-12-05)
-</li>
-<li>
-"Is that a pertinent fact,
-or are you trying to dazzle me with your command of time zones?"
-(Kelsey Grammer as "Frasier Crane")
-</li>
-<li>
-"Don't worry about the world coming to an end today.
-It is already tomorrow in Australia."
-(Charles M. Schulz, provided by Steve Summit)
-</li>
-<li>
-"I put myself and my staff through this crazy, huge ordeal, all because
-I refused to go on at midnight, okay? And so I work, you know, and
-then I get this job at eleven, supposed to be a big deal. Then
-yesterday daylight [saving] time ended. Right now it's basically
-midnight." (Conan O'Brien on the 2010-11-08 premier of "Conan.")
-</li>
-</ul>
-</body>
-</html>
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+++ vendor/tzcode/2016f/tz-art.htm 2016-08-15 01:50:44 UTC (rev 7737)
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+<!DOCTYPE html
+PUBLIC "-//W3C//DTD HTML 4.01//EN"
+"http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="Content-type" content='text/html; charset="UTF-8"'>
+<title>Time and the Arts</title>
+</head>
+<body>
+<h1>Time and the Arts</h1>
+<h2>Documentaries</h2>
+<ul>
+<li>
+"<a href="https://www.youtube.com/watch?v=84aWtseb2-4">Daylight
+Saving Time Explained</a>" (2011; 6:39) lightly covers daylight saving
+time's theory, history, pros and cons. Among other things, it explains
+Arizona's daylight-saving enclaves quite well.</li>
+<li>
+"<a href="https://www.youtube.com/watch?v=-5wpm-gesOY">The Problem
+with Time & Timezones – Computerphile</a>" (2013; 10:12) delves
+into problems that programmers have with timekeeping.</li>
+<li>
+"About Time" (1962; 53 minutes) is part of the the
+Bell Science extravaganza, with Frank Baxter, Richard Deacon, and Les Tremayne.
+(<a href="http://www.imdb.com/title/tt0154110/">IMDb entry</a>.)</li>
+</ul>
+<h2>Music</h2>
+<p>
+Data on recordings of "Save That Time," Russ Long, Serrob Publishing, BMI:</p>
+<table>
+<tr><td>Artist</td><td>Karrin Allyson</td></tr>
+<tr><td>CD</td><td>I Didn't Know About You</td></tr>
+<tr><td>Copyright Date</td><td>1993</td></tr>
+<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
+<tr><td>ID</td><td>CCD-4543</td></tr>
+<tr><td>Track Time</td><td>3:44</td></tr>
+<tr><td>Personnel</td><td>Karrin Allyson, vocal;
+Russ Long, piano;
+Gerald Spaits, bass;
+Todd Strait, drums</td></tr>
+<tr><td>Notes</td><td>CD notes "additional lyric by Karrin Allyson;
+arranged by Russ Long and Karrin Allyson"</td></tr>
+<tr><td>ADO Rating</td><td>1 star</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/i-didnt-know-about-you-mw0000618657">AMG Rating</a></td><td>4 stars</td></tr>
+<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Kevin Mahogany</td></tr>
+<tr><td>CD</td><td>Double Rainbow</td></tr>
+<tr><td>Copyright Date</td><td>1993</td></tr>
+<tr><td>Label</td><td>Enja Records</td></tr>
+<tr><td>ID</td><td>ENJ-7097 2</td></tr>
+<tr><td>Track Time</td><td>6:27</td></tr>
+<tr><td>Personnel</td><td>Kevin Mahogany, vocal;
+Kenny Barron, piano;
+Ray Drummond, bass;
+Ralph Moore, tenor saxophone;
+Lewis Nash, drums</td></tr>
+<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/double-rainbow-mw0000620371">AMG Rating</a></td><td>3 stars</td></tr>
+<tr><td>Penguin Rating</td><td>3 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Joe Williams</td></tr>
+<tr><td>CD</td><td>Here's to Life</td></tr>
+<tr><td>Copyright Date</td><td>1994</td></tr>
+<tr><td>Label</td><td>Telarc International Corporation</td></tr>
+<tr><td>ID</td><td>CD-83357</td></tr>
+<tr><td>Track Time</td><td>3:58</td></tr>
+<tr><td>Personnel</td><td>Joe Williams, vocal
+The Robert Farnon [39 piece] Orchestra</td></tr>
+<tr><td>Notes</td><td>This CD is also available as part of a 3-CD package from
+Telarc, "Triple Play" (CD-83461)</td></tr>
+<tr><td>ADO Rating</td><td>black dot</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/heres-to-life-mw0000623648">AMG Rating</a></td><td>2 stars</td></tr>
+<tr><td>Penguin Rating</td><td>3 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Charles Fambrough</td></tr>
+<tr><td>CD</td><td>Keeper of the Spirit</td></tr>
+<tr><td>Copyright Date</td><td>1995</td></tr>
+<tr><td>Label</td><td>AudioQuest Music</td></tr>
+<tr><td>ID</td><td>AQ-CD1033</td></tr>
+<tr><td>Track Time</td><td>7:07</td></tr>
+<tr><td>Personnel</td><td>Charles Fambrough, bass;
+Joel Levine, tenor recorder;
+Edward Simon, piano;
+Lenny White, drums;
+Marion Simon, percussion</td></tr>
+<tr><td>ADO Rating</td><td>2 stars</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/keeper-of-the-spirit-mw0000176559">AMG Rating</a></td><td>unrated</td></tr>
+<tr><td>Penguin Rating</td><td>3 stars</td></tr>
+</table>
+<hr>
+<p>Also of note:</p>
+<table>
+<tr><td>Artist</td><td>Holly Cole Trio</td></tr>
+<tr><td>CD</td><td>Blame It On My Youth</td></tr>
+<tr><td>Copyright Date</td><td>1992</td></tr>
+<tr><td>Label</td><td>Manhattan</td></tr>
+<tr><td>ID</td><td>CDP 7 97349 2</td></tr>
+<tr><td>Total Time</td><td>37:45</td></tr>
+<tr><td>Personnel</td><td>Holly Cole, voice;
+Aaron Davis, piano;
+David Piltch, string bass</td></tr>
+<tr><td>Notes</td><td>Lyrical reference to "Eastern Standard Time" in
+Tom Waits' "Purple Avenue"</td></tr>
+<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/blame-it-on-my-youth-mw0000274303">AMG Rating</a></td><td>3 stars</td></tr>
+<tr><td>Penguin Rating</td><td>unrated</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Milt Hinton</td></tr>
+<tr><td>CD</td><td>Old Man Time</td></tr>
+<tr><td>Copyright Date</td><td>1990</td></tr>
+<tr><td>Label</td><td>Chiaroscuro</td></tr>
+<tr><td>ID</td><td>CR(D) 310</td></tr>
+<tr><td>Total Time</td><td>149:38 (two CDs)</td></tr>
+<tr><td>Personnel</td><td>Milt Hinton, bass;
+Doc Cheatham, Dizzy Gillespie, Clark Terry, trumpet;
+Al Grey, trombone;
+Eddie Barefield, Joe Camel (Flip Phillips), Buddy Tate,
+clarinet and saxophone;
+John Bunch, Red Richards, Norman Simmons, Derek Smith,
+Ralph Sutton, piano;
+Danny Barker, Al Casey, guitar;
+Gus Johnson, Gerryck King, Bob Rosengarden, Jackie Williams,
+drums;
+Lionel Hampton, vibraphone;
+Cab Calloway, Joe Williams, vocal;
+Buck Clayton, arrangements</td></tr>
+<tr><td>Notes</td><td>tunes include Old Man Time, Time After Time,
+Sometimes I'm Happy,
+A Hot Time in the Old Town Tonight,
+Four or Five Times, Now's the Time,
+Time on My Hands, This Time It's Us,
+and Good Time Charlie.
+<a href="http://www.chiaroscurojazz.com/album.php?C=310">Album info</a>
+is available.</td></tr>
+<tr><td>ADO Rating</td><td>3 stars</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/old-man-time-mw0000269353">AMG Rating</a></td><td>4.5 stars</td></tr>
+<tr><td>Penguin Rating</td><td>3 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Alan Broadbent</td></tr>
+<tr><td>CD</td><td>Pacific Standard Time</td></tr>
+<tr><td>Copyright Date</td><td>1995</td></tr>
+<tr><td>Label</td><td>Concord Jazz, Inc.</td></tr>
+<tr><td>ID</td><td>CCD-4664</td></tr>
+<tr><td>Total Time</td><td>62:42</td></tr>
+<tr><td>Personnel</td><td>Alan Broadbent, piano;
+Putter Smith, Bass;
+Frank Gibson, Jr., drums</td></tr>
+<tr><td>Notes</td><td>The CD cover features an analemma for equation-of-time fans</td></tr>
+<tr><td>ADO Rating</td><td>1 star</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/pacific-standard-time-mw0000645433">AMG Rating</a></td><td>4 stars</td></tr>
+<tr><td>Penguin Rating</td><td>3.5 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Anthony Braxton/Richard Teitelbaum</td></tr>
+<tr><td>CD</td><td>Silence/Time Zones</td></tr>
+<tr><td>Copyright Date</td><td>1996</td></tr>
+<tr><td>Label</td><td>Black Lion</td></tr>
+<tr><td>ID</td><td>BLCD 760221</td></tr>
+<tr><td>Total Time</td><td>72:58</td></tr>
+<tr><td>Personnel</td><td>Anthony Braxton, sopranino and alto saxophones,
+contrebasse clarinet, miscellaneous instruments;
+Leo Smith, trumpet and miscellaneous instruments;
+Leroy Jenkins, violin and miscellaneous instruments;
+Richard Teitelbaum, modular moog and micromoog synthesizer</td></tr>
+<tr><td>ADO Rating</td><td>black dot</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/silence-time-zones-mw0000595735">AMG Rating</a></td><td>4 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Charles Gayle</td></tr>
+<tr><td>CD</td><td>Time Zones</td></tr>
+<tr><td>Copyright Date</td><td>2006</td></tr>
+<tr><td>Label</td><td>Tompkins Square</td></tr>
+<tr><td>ID</td><td>TSQ2839</td></tr>
+<tr><td>Total Time</td><td>49:06</td></tr>
+<tr><td>Personnel</td><td>Charles Gayle, piano</td></tr>
+<tr><td>ADO Rating</td><td>1 star</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/time-zones-mw0000349642">AMG Rating</a></td><td>4.5 stars</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>The Get Up Kids</td></tr>
+<tr><td>CD</td><td>Eudora</td></tr>
+<tr><td>Copyright Date</td><td>2001</td></tr>
+<tr><td>Label</td><td>Vagrant</td></tr>
+<tr><td>ID</td><td>357</td></tr>
+<tr><td>Total Time</td><td>65:12</td></tr>
+<tr><td>Notes</td><td>Includes the song "Central Standard Time." Thanks to Colin Bowern for this information.</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/eudora-mw0000592063">AMG Rating</a></td><td>2.5 stars</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>Artist</td><td>Coldplay</td></tr>
+<tr><td>Song</td><td>Clocks</td></tr>
+<tr><td>Copyright Date</td><td>2003</td></tr>
+<tr><td>Label</td><td>Capitol Records</td></tr>
+<tr><td>ID</td><td>52608</td></tr>
+<tr><td>Total Time</td><td>4:13</td></tr>
+<tr><td>Notes</td><td>Won the 2004 Record of the Year honor at the
+Grammy Awards. Co-written and performed by Chris Martin,
+great-great-grandson of DST inventor William Willett. The song's first
+line is "Lights go out and I can't be saved".</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>Artist</td><td>Irving Kahal and Harry Richman</td></tr>
+<tr><td>Song</td><td>There Ought to be a Moonlight Saving Time</td></tr>
+<tr><td>Copyright Date</td><td>1931</td>
+<tr><td>Notes</td><td>This musical standard was a No. 1 hit for Guy Lombardo
+in 1931, and was also performed by Maurice Chevalier, Blossom Dearie
+and many others. The phrase "Moonlight saving time" also appears in
+the 1995 country song "Not Enough Hours in the Night" written by Aaron
+Barker, Kim Williams and Rob Harbin and performed by Doug
+Supernaw.</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>Artist</td><td>The Microscopic Septet</td></tr>
+<tr><td>CD</td><td>Lobster Leaps In</td></tr>
+<tr><td>Copyright Date</td><td>2008</td></tr>
+<tr><td>Label</td><td>Cuneiform</td></tr>
+<tr><td>ID</td><td>272</td></tr>
+<tr><td>Total Time</td><td>73:05</td></tr>
+<tr><td>Notes</td><td>Includes the song "Twilight Time Zone."</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/lobster-leaps-in-mw0000794929">AMG Rating</a></td><td>3.5 stars</td></tr>
+<tr><td>ADO Rating</td><td>2 stars</td></tr>
+
+<tr><td> </td></tr>
+
+<tr><td>Artist</td><td>Bob Dylan</td></tr>
+<tr><td>CD</td><td>The Times They Are a-Changin'</td></tr>
+<tr><td>Copyright Date</td><td>1964</td></tr>
+<tr><td>Label</td><td>Columbia</td></tr>
+<tr><td>ID</td><td>CK-8905</td></tr>
+<tr><td>Total Time</td><td>45:36</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/the-times-they-a-changin-mw0000202344">AMG Rating</a></td><td>4.5 stars</td></tr>
+<tr><td>ADO Rating</td><td>1.5 stars</td></tr>
+<tr><td>Notes<td>The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>Artist</td><td>Luciana Souza</td></tr>
+<tr><td>CD</td><td>Tide</td></tr>
+<tr><td>Copyright Date</td><td>2009</td></tr>
+<tr><td>Label</td><td>Universal Jazz France</td></tr>
+<tr><td>ID</td><td>B0012688-02</td></tr>
+<tr><td>Total Time</td><td>42:31</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/tide-mw0000815692">AMG Rating</a></td><td>3.5 stars</td></tr>
+<tr><td>ADO Rating</td><td>2.5 stars</td></tr>
+<tr><td>Notes<td>Includes the song "Fire and Wood" with the lyric
+"The clocks were turned back you remember/Think it's still November."
+</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Ken Nordine</td></tr>
+<tr><td>CD</td><td>You're Getting Better: The Word Jazz Dot Masters</td></tr>
+<tr><td>Copyright Date</td><td>2005</td></tr>
+<tr><td>Label</td><td>Geffen</td></tr>
+<tr><td>ID</td><td>B0005171-02</td></tr>
+<tr><td>Total Time</td><td>156:22</td></tr>
+<tr><td>ADO Rating</td><td>1 star</td></tr>
+<tr><td><a href="http://www.allmusic.com/album/youre-getting-better-the-word-jazz-dot-masters-mw0000736197">AMG Rating</a></td><td>4.5 stars</td></tr>
+<tr><td>Notes</td><td>Includes the piece "What Time Is It"
+("He knew what time it was everywhere...that counted").</td></tr>
+</table>
+
+<h2>TV episodes</h2>
+
+<ul>
+<li>
+An episode of <em>The Adventures of Superman</em> entitled "The Mysterious
+Cube," first aired 1958-02-24, had Superman convincing the controllers
+of the Arlington Time Signal to broadcast ahead of actual time;
+doing so got a crook trying to be declared dead to
+emerge a bit too early from the titular enclosure.
+</li>
+<li>
+The 1960s ITC television series <em>The Prisoner</em> included an episode
+entitled "The Chimes of Big Ben" in which our protagonist tumbled to
+the fraudulent nature of a Poland-to-England escape upon hearing "Big
+Ben" chiming on Polish local time.
+</li>
+<li>
+The series <em>Seinfeld</em> included an episode entitled "The Susie," first
+broadcast 1997-02-13, in which Kramer decides that daylight saving time
+isn't coming fast enough, so he sets his watch ahead an hour.
+</li>
+<li>
+The "20 Hours in America" episode of <em>The West Wing</em>,
+first aired 2002-09-25,
+saw White House staffers stranded in Indiana; they thought they had time to
+catch Air Force One but were done in by intra-Indiana local time changes.
+</li>
+<li>
+"In what time zone would you find New York City?" was a $200 question on
+the 1999-11-13 United States airing of <em>Who Wants to Be a Millionaire?</em>,
+and "In 1883, what industry led the movement to divide the U.S. into four time
+zones?" was a $32,000 question on the 2001-05-23 United States airing of
+the same show. At this rate, the million-dollar time-zone
+question should have been asked 2002-06-04.
+</li>
+<li>
+A private jet's mid-flight change of time zones distorts Alison Dubois'
+premonition in the "We Had a Dream" episode of <em>Medium</em>
+(originally aired 2007-02-28).
+</li>
+<li>
+In the <em>30 Rock</em> episode "Anna Howard Shaw Day"
+(first broadcast 2010-02-11),
+Jack Donaghy's date realizes that a Geneva-to-New-York business phone call
+received in the evening must be fake given the difference in local times.
+</li>
+<li>
+In the "Run by the Monkeys" episode of <em>Da Vinci's Inquest</em>
+(first broadcast 2002-11-17),
+a witness in a five-year-old fire case realizes they may not have set
+their clock back when daylight saving ended on the day of the fire,
+introducing the possibility of an hour when arson might have occurred.
+</li>
+<li>
+In "The Todd Couple" episode of <em>Outsourced</em> (first aired 2011-02-10),
+Manmeet sets up Valentine's Day teledates for 6:00 and 9:00pm;
+since one is with a New Yorker and the other with a San Franciscan,
+hilarity ensues.
+(Never mind that this should be 7:30am in Mumbai, yet for some reason the show
+proceeds as though it's also mid-evening there.)
+</li>
+<li>
+In the "14 Days to Go"/"T Minus..." episode of
+<em>You, Me and the Apocalypse</em>
+(first aired 2015-11-11 in the UK, 2016-03-10 in the US),
+the success of a mission to deal with a comet
+hinges on whether or not Russia observes daylight saving time.
+(In the US, the episode first aired in the week before the switch to DST.)
+</li>
+</ul>
+
+<table>
+<tr><td>TV episode title</td><td>The Lost Hour</td>
+<tr><td>TV series</td><td><em>Eerie, Indiana</em></td>
+<tr><td>TV episode number</td><td>10</td>
+<tr><td>Network</td><td>NBC</td>
+<tr><td>Air date</td><td>1991-12-01</td>
+<tr><td>Notes</td><td>Despite Indiana's then-lack of DST, Marshall changes his clock with unusual consequences.</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>TV episode title</td><td>Time Tunnel</td>
+<tr><td>TV series</td><td><em>The Adventures of Pete & Pete</em></td>
+<tr><td>TV episode number</td><td>5, season 2</td>
+<tr><td>Network</td><td>Nickelodeon</td>
+<tr><td>Air date</td><td>1994-10-23</td>
+<tr><td>Notes</td><td>The two Petes travel back in time an hour on the day that DST ends.</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>TV episode title</td><td>King-Size Homer</td>
+<tr><td>TV series</td><td><em>The Simpsons</em></td>
+<tr><td>TV episode number</td><td>135</td>
+<tr><td>Network</td><td>Fox</td>
+<tr><td>Air date</td><td>1995-11-05</td>
+<tr><td>Notes</td><td>Homer, working from home, remarks "8:58, first
+time I've ever been early for work. Except for all those daylight
+savings days. Lousy farmers."</td></tr>
+<tr><td> </td></tr>
+
+<tr><td>TV episode title</td><td>Tracks</td></tr>
+<tr><td>TV series</td><td><em>The Good Wife</em></td></tr>
+<tr><td>TV episode number</td><td>12, season 7</td></tr>
+<tr><td>Network</td><td>CBS</td></tr>
+<tr><td>Air date</td><td>2016-01-17</td></tr>
+<tr><td>Notes</td><td>The applicability of a contract hinges on the
+time zone associated with a video time stamp.</td></tr>
+</table>
+
+<h2>Books, plays, and magazines</h2>
+
+<table>
+<tr><td>Artist</td><td>Jules Verne</td></tr>
+<tr><td>Book</td><td><em>Around the World in Eighty Days</em>
+(<em>Le tour du monde en quatre-vingts jours</em>)</td></tr>
+<tr><td>Notes</td><td>Wall-clock time plays a central role in the plot.
+European readers of the 1870s clearly held the U.S. press in
+deep contempt; the protagonists cross the U.S. without once
+reading a paper.
+An on-line French-language version of the book
+"with illustrations from the original 1873 French-language edition"
+is available at
+<a href="http://fourmilab.ch/etexts/www/tdm80j">http://fourmilab.ch/etexts/www/tdm80j</a>
+An on-line English-language translation of the book is available at
+<a href="http://www.literature.org/Works/Jules-Verne/eighty">http://www.literature.org/Works/Jules-Verne/eighty</a></td></tr>
+
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Nick Enright</td></tr>
+<tr><td>Play</td><td><em>Daylight Saving</em></td></tr>
+<tr><td>Copyright Date</td><td>1989</td></tr>
+<tr><td>Notes</td><td>
+A fast-paced comedy about love and loneliness as the clocks turn back.
+</td></tr>
+
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>Umberto Eco</td></tr>
+<tr><td>Book</td><td><em>The Island of the Day Before</em>
+(<em>L'isola del giorno prima</em>)</td></tr>
+<tr><td>Copyright Date</td><td>1994</td></tr>
+<tr><td>Notes</td><td>
+"...the story of a 17th century Italian nobleman trapped near an island
+on the International Date Line. Time and time zones play an integral
+part in the novel." (Paul Eggert, 2006-04-22)
+</td></tr>
+<tr><td> </td></tr>
+<tr><td>Artist</td><td>John Dunning</td></tr>
+<tr><td>Book</td><td><a
+href="http://books.simonandschuster.com/Two-OClock-Eastern-Wartime/John-Dunning/9781439171530"><em>Two
+O'Clock, Eastern Wartime</em></a></td></tr>
+<tr><td>Copyright Date</td><td>2001</td></tr>
+<tr><td>Notes</td><td>
+Mystery, history, daylight saving time, and old-time radio.
+</td></tr>
+</table>
+<hr>
+<ul>
+<li>
+Surrealist artist Guy Billout's work "Date Line" appeared on page 103
+of the 1999-11 <em>Atlantic Monthly</em>.
+</li>
+<li>
+"Gloom, Gloom, Go Away" by Walter Kirn appeared on page 106 of <em>Time</em>
+magazine's 2002-11-11 issue; among other things, it proposed
+year-round DST as a way of lessening wintertime despair.
+</li>
+</ul>
+<h2>Movies</h2>
+<ul>
+<li>
+In the 1946 movie <em>A Matter of Life and Death</em>
+(U.S. title <em>Stairway to Heaven</em>)
+there is a reference to British Double Summer Time.
+The time does not play a large part in the plot;
+it's just a passing reference to the time when one of the
+characters was supposed to have died (but didn't).
+The IMDb page is at
+<a href="http://us.imdb.com/title/tt0038733/">
+http://us.imdb.com/title/tt0038733/
+</a>. (Dave Cantor)
+<li>
+The 1953 railway comedy movie <em>The Titfield Thunderbolt</em> includes a
+play on words on British Double Summer Time. Valentine's wife wants
+him to leave the pub and asks him, "Do you know what time it is?"
+And he, happy where he is, replies: "Yes, my love. Summer double time."
+IMDb page:
+<a href="http://us.imdb.com/title/tt0046436/">
+http://us.imdb.com/title/tt0046436/
+</a>. (Mark Brader, 2009-10-02)
+</li>
+<li>
+The premise of the 1999 caper movie <em>Entrapment</em> involves computers
+in an international banking network being shut down briefly at
+midnight in each time zone to avoid any problems at the transition
+from the year 1999 to 2000 in that zone. (Hmmmm.) If this shutdown
+is extended by 10 seconds, it will create a one-time opportunity for
+a gigantic computerized theft. To achieve this, at one location the
+crooks interfere with the microwave system supplying time signals to
+the computer, advancing the time by 0.1 second each minute over the
+last hour of 1999. (So this movie teaches us that 0.1 × 60 = 10.)
+IMDb page:
+<a href="http://us.imdb.com/title/tt0137494/">
+http://us.imdb.com/title/tt0137494/
+</a>. (Mark Brader, 2009-10-02)
+</li>
+<li>
+One mustn't forget the
+<a href="https://www.youtube.com/watch?v=k4EUTMPuvHo">trailer</a>
+(2014; 2:23) for the movie <em>Daylight Saving</em>.
+</li>
+</ul>
+<h2>Comics</h2>
+<ul>
+<li>
+The webcomic <em>xkcd</em> has the strip
+"<a href='http://xkcd.com/673/'>The Sun</a>" (2009-12-09) and the panels
+"<a href='http://xkcd.com/1017/'>Backward in Time</a>" (2012-02-14),
+"<a href='http://xkcd.com/1061/'>EST</a>" (2012-05-28), and
+"<a href='http://xkcd.com/1335/'>Now</a>" (2014-02-26), and
+"<a href='http://xkcd.com/1655/'>Doomsday Clock</a>" (2016-03-14).
+The related book <em>What If?</em> has an entry
+"<a href='http://what-if.xkcd.com/26/'>Leap Seconds</a>" (2012-12-31).
+</li>
+<li>
+The syndicated comic strip <em>Dilbert</em> featured an
+<a href='http://dilbert.com/strip/1998-03-14'>example of
+time zone humor</a> on 1998-03-14.
+</li>
+<li>
+Peppermint Patty: "What if the world comes to an end tonight, Marcie?"
+<br>
+Marcie: "I promise there'll be a tomorrow, sir ... in fact,
+it's already tomorrow in Australia!"
+<br>
+(Charles M. Schulz, <a href='http://www.gocomics.com/peanuts/1980/06/13'><em>Peanuts</em>, 1980-06-13</a>)
+</li>
+</ul>
+<h2>Jokes</h2>
+<ul>
+<li>
+"We've been using the five-cent nickel in this country since 1492.
+Now that's pretty near 100 years, daylight saving."
+(Groucho Marx as Captain Spaulding in <em>Animal Crackers</em>, 1930,
+as noted by Will Fitzgerald)
+</li>
+<li>
+BRADY. ...[Bishop Usher] determined that the Lord began the Creation
+on the 23rd of October in the Year 4,004 B.C. at – uh, 9 A.M.!
+<br>
+DRUMMOND. That Eastern Standard Time? (<em>Laughter.</em>) Or Rocky Mountain
+Time? (<em>More laughter.</em>) It wasn't daylight-saving time, was it? Because
+the Lord didn't make the sun until the fourth day!
+<br>
+(From the play <em>Inherit the Wind</em> by Jerome Lawrence and Robert E. Lee,
+filmed in 1960 with Spencer Tracy as Drummond and Fredric March as
+Brady, and several other times. Thanks to Mark Brader.)
+</li>
+<li>
+"Good news."
+"What did they do? Extend Daylight Saving Time year round?"
+(Professional tanner George Hamilton, in dialog from a
+May, 1999 episode of the syndicated television series <em>Baywatch</em>)
+</li>
+<li>
+"A fundamental belief held by Americans is that if you are on land, you
+cannot be killed by a fish...So most Americans remain on land, believing
+they're safe. Unfortunately, this belief – like so many myths, such as that
+there's a reason for 'Daylight Saving Time' – is false."
+(Dave Barry column, 2000-07-02)
+</li>
+<li>
+"I once had sex for an hour and five minutes, but that was on the day
+when you turn the clocks ahead."
+(Garry Shandling, 52nd Annual Emmys, 2000-09-10)
+</li>
+<li>
+"Would it impress you if I told you I invented Daylight Savings Time?"
+("Sahjhan" to "Lilah" in dialog from the "Loyalty" episode of <em>Angel</em>,
+originally aired 2002-02-25)
+</li>
+<li>
+"I thought you said Tulsa was a three-hour flight."
+"Well, you're forgetting about the time difference."
+("Joey" and "Chandler" in dialog from the episode of <em>Friends</em>
+entitled "The One With Rachel's Phone Number," originally aired 2002-12-05)
+</li>
+<li>
+"Is that a pertinent fact,
+or are you just trying to dazzle me with your command of time zones?"
+(Kelsey Grammer as "Frasier Crane" to "Roz" from the episode of <em>Frasier</em>
+entitled "The Kid," originally aired 1997-11-04)
+</li>
+<li>
+"I put myself and my staff through this crazy, huge ordeal, all because
+I refused to go on at midnight, okay? And so I work, you know, and
+then I get this job at eleven, supposed to be a big deal. Then
+yesterday daylight [saving] time ended. Right now it's basically
+midnight." (Conan O'Brien on the 2010-11-08 premiere of <em>Conan</em>.)
+</li>
+<li>
+"Well, in my time zone that's all the time I have,
+but maybe in your time zone I haven't finished yet. So stay tuned!"
+(Goldie Hawn, <em>Rowan & Martin's Laugh-In</em> No. 65, 1970-03-09)
+</li>
+</ul>
+<h2>See also</h2>
+<ul>
+<li><a href="tz-link.htm">Sources for Time Zone and Daylight Saving
+Time Data</a></li>
+</ul>
+<hr>
+<address>
+This web page is in the public domain, so clarified as of
+2009-05-17 by Arthur David Olson.
+<br>
+Please send corrections to this web page to the
+<a href="mailto:tz at iana.org">time zone mailing list</a>.
+</address>
+</body>
+</html>
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+<!DOCTYPE html
+ PUBLIC "-//W3C//DTD HTML 4.01//EN"
+ "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head><title>How to Read the tz Database</title></head>
+<body>
+<h2>How to Read the <a href="https://en.wikipedia.org/wiki/Tz_database">tz
+Database</a> Source Files</h2>
+<h3>by Bill Seymour</h3>
+<p>This page uses the <code>America/Chicago</code> and
+<code>Pacific/Honolulu</code> zones as examples of how to infer
+times of day from the <a href="tz-link.htm">tz database</a>
+source files. It might be helpful, but not absolutely necessary,
+for the reader to have already downloaded the
+<a href="http://www.iana.org/time-zones/repository/tzdata-latest.tar.gz">latest
+release of the database</a> and become familiar with the basic layout
+of the data files. The format is explained in the “man
+page” for the zic compiler, <code>zic.8.txt</code>, in
+the <code>code</code> subdirectory.</p>
+
+<p>We’ll begin by talking about the rules for changing between standard
+and daylight saving time since we’ll need that information when we talk
+about the zones.</p>
+
+<p>First, let’s consider the special daylight saving time rules
+for Chicago (from the <code>northamerica</code> file in
+the <code>data</code> subdirectory):</p>
+
+<table border="1">
+<tr>
+ <th colspan="6">From the Source File</th>
+</tr>
+<tr>
+ <td colspan="6" align="center"><table><tr><td>
+<pre>
+#Rule NAME FROM TO TYPE IN ON AT SAVE LETTER
+Rule Chicago 1920 only - Jun 13 2:00 1:00 D
+Rule Chicago 1920 1921 - Oct lastSun 2:00 0 S
+Rule Chicago 1921 only - Mar lastSun 2:00 1:00 D
+Rule Chicago 1922 1966 - Apr lastSun 2:00 1:00 D
+Rule Chicago 1922 1954 - Sep lastSun 2:00 0 S
+Rule Chicago 1955 1966 - Oct lastSun 2:00 0 S
+</pre>
+ </td></tr></table></td>
+</tr>
+<tr>
+ <th colspan="6">Reformatted a Bit</th>
+</tr>
+<tr>
+ <th>From</th>
+ <th>To</th>
+ <th colspan="2">On</th>
+ <th>At</th>
+ <th>Action</th>
+</tr>
+<tr align="center">
+ <td colspan="2">1920 only</td>
+ <td colspan="2">June 13<small><sup>th</sup></small></td>
+ <td rowspan="6">02:00 local</td>
+ <td>go to daylight saving time</td>
+</tr>
+<tr align="center">
+ <td>1920</td>
+ <td>1921</td>
+ <td rowspan="5">last Sunday</td>
+ <td>in October</td>
+ <td>return to standard time</td>
+</tr>
+<tr align="center">
+ <td colspan="2">1921 only</td>
+ <td>in March</td>
+ <td rowspan="2">go to daylight saving time</td>
+</tr>
+<tr align="center">
+ <td rowspan="2">1922</td>
+ <td>1966</td>
+ <td>in April</td>
+</tr>
+<tr align="center">
+ <td>1954</td>
+ <td>in September</td>
+ <td rowspan="2">return to standard time</td>
+</tr>
+<tr align="center">
+ <td>1955</td>
+ <td>1966</td>
+ <td>in October</td>
+</tr>
+</table>
+
+<p>We’ll basically just ignore the <code>TYPE</code> column.
+In the 2007j release, the most recent as of this writing, the
+<code>TYPE</code> column never contains anything but a hyphen,
+a kind of null value. (From the description in <code>zic.8.txt</code>,
+this appears to be a mechanism for removing years from a set
+in some localizable way. It’s used in the file, <code>pacificnew</code>,
+to determine whether a given year will have a US presidential election;
+but everything related to that use is commented out.)
+
+<p>The <code>SAVE</code> column contains the wall clock offset from
+local standard time.
+This is usually either zero for standard time or one hour for daylight
+saving time; but there’s no reason, in principle, why it can’t
+take on other values.
+
+<p>The <code>LETTER</code> (sometimes called <code>LETTER/S</code>)
+column can contain a variable
+part of the usual abbreviation of the time zone’s name, or it can just
+be a hyphen if there’s no variable part. For example, the abbreviation
+used in the central time zone will be either “CST” or
+“CDT”. The variable part is ‘S’ or ‘D’;
+and, sure enough, that’s just what we find in
+the <code>LETTER</code> column
+in the <code>Chicago</code> rules. More about this when we talk about
+“Zone” lines.
+
+<p>One important thing to notice is that “Rule” lines
+want at once to be both <i>transitions</i> and <i>steady states</i>:
+<ul>
+<li>On the one hand, they represent transitions between standard and
+daylight saving time; and any number of Rule lines can be in effect
+during a given period (which will always be a non-empty set of
+contiguous calendar years).</li>
+<li>On the other hand, the <code>SAVE</code> and <code>LETTER</code>
+columns contain state that exists between transitions. More about this
+when we talk about the US rules.</li>
+</ul>
+
+<p>In the example above, the transition to daylight saving time
+happened on the 13<small><sup>th</sup></small> of June in 1920, and on
+the last Sunday in March in 1921; but the return to standard time
+happened on the last Sunday in October in both of those
+years. Similarly, the rule for changing to daylight saving time was
+the same from 1922 to 1966; but the rule for returning to standard
+time changed in 1955. Got it?</p>
+
+<p>OK, now for the somewhat more interesting “US” rules:</p>
+
+<table border="1">
+<tr>
+ <th colspan="6">From the Source File</th>
+</tr>
+<tr>
+ <td colspan="6" align="center"><table><tr><td>
+<pre>
+#Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule US 1918 1919 - Mar lastSun 2:00 1:00 D
+Rule US 1918 1919 - Oct lastSun 2:00 0 S
+Rule US 1942 only - Feb 9 2:00 1:00 W # War
+Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
+Rule US 1945 only - Sep 30 2:00 0 S
+Rule US 1967 2006 - Oct lastSun 2:00 0 S
+Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
+Rule US 1974 only - Jan 6 2:00 1:00 D
+Rule US 1975 only - Feb 23 2:00 1:00 D
+Rule US 1976 1986 - Apr lastSun 2:00 1:00 D
+Rule US 1987 2006 - Apr Sun>=1 2:00 1:00 D
+Rule US 2007 max - Mar Sun>=8 2:00 1:00 D
+Rule US 2007 max - Nov Sun>=1 2:00 0 S
+</pre>
+ </td></tr></table></td>
+</tr>
+<tr>
+ <th colspan="6">Reformatted a Bit</th>
+</tr>
+<tr>
+ <th>From</th>
+ <th>To</th>
+ <th colspan="2">On</th>
+ <th>At</th>
+ <th>Action</th>
+</tr>
+<tr align="center">
+ <td rowspan="2">1918</td>
+ <td rowspan="2">1919</td>
+ <td rowspan="2">last Sunday</td>
+ <td>in March</td>
+ <td rowspan="3">02:00 local</td>
+ <td>go to daylight saving time</td>
+</tr>
+<tr align="center">
+ <td>in October</td>
+ <td>return to standard time</td>
+</tr>
+<tr align="center">
+ <td colspan="2">1942 only</td>
+ <td colspan="2">February 9<small><sup>th</sup></small></td>
+ <td>go to “war time”</td>
+</tr>
+<tr align="center">
+ <td colspan="2" rowspan="2">1945 only</td>
+ <td colspan="2">August 14<small><sup>th</sup></small></td>
+ <td>23:00 <a href="https://en.wikipedia.org/wiki/Universal_Time">UT</a></td>
+ <td>
+ rename “war time” to “peace<br>time;”
+ clocks don’t change
+ </td>
+</tr>
+<tr align="center">
+ <td colspan="2">September 30<small><sup>th</sup></small></td>
+ <td rowspan="9">02:00 local</td>
+ <td rowspan="2">return to standard time</td>
+</tr>
+<tr align="center">
+ <td rowspan="2">1967</td>
+ <td>2006</td>
+ <td rowspan="2">last Sunday</td>
+ <td>in October</td>
+</tr>
+<tr align="center">
+ <td>1973</td>
+ <td>in April</td>
+ <td rowspan="6">go to daylight saving time</td>
+</tr>
+<tr align="center">
+ <td colspan="2">1974 only</td>
+ <td colspan="2">January 6<small><sup>th</sup></small></td>
+</tr>
+<tr align="center">
+ <td colspan="2">1975 only</td>
+ <td colspan="2">February 23<small><sup>rd</sup></small></td>
+</tr>
+<tr align="center">
+ <td>1976</td>
+ <td>1986</td>
+ <td>last Sunday</td>
+ <td rowspan="2">in April</td>
+</tr>
+<tr align="center">
+ <td>1987</td>
+ <td>2006</td>
+ <td>first Sunday</td>
+</tr>
+<tr align="center">
+ <td rowspan="2">2007</td>
+ <td rowspan="2">present</td>
+ <td colspan="2">second Sunday in March</td>
+</tr>
+<tr align="center">
+ <td colspan="2">first Sunday in November</td>
+ <td>return to standard time</td>
+</tr>
+</table>
+
+<p>There are two interesting things to note here.</p>
+
+<p>First, the time that something happens (in the <code>AT</code>
+column) is not necessarily the local wall clock time. The time can be
+suffixed with ‘s’ (for “standard”) to mean
+local standard time (different from wall clock time when observing
+daylight saving time); or it can be suffixed with ‘g’,
+‘u’, or ‘z’, all three of which mean the
+standard time at the
+<a href="https://en.wikipedia.org/wiki/Prime_Meridian">prime meridan</a>.
+‘g’ stands for “<a
+href="https://en.wikipedia.org/wiki/Greenwich_Mean_Time">GMT</a>”;
+‘u’ stands for “<a
+href="https://en.wikipedia.org/wiki/Universal_Time">UT</a>” or “<a
+href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">UTC</a>”
+(whichever was official at the time); ‘z’ stands for the
+<a href="https://en.wikipedia.org/wiki/Nautical_time">nautical time zone</a>
+Z (a.k.a. “Zulu” which, in turn, stands for ‘Z’).
+The time can also be suffixed with ‘w’ meaning “wall
+clock time;” but it usually isn’t because that’s the
+default.</p>
+
+<p>Second, the day in the <code>ON</code> column, in addition to
+“<code>lastSun</code>” or a particular day of the month,
+can have the form, “<code>Sun>=</code><i>x</i>” or
+“<code>Sun<=</code><i>x</i>,” where <i>x</i> is a day
+of the month. For example, “<code>Sun>=8</code>” means
+“the first Sunday on or after the eighth of the month,” in
+other words, the second Sunday of the month. Furthermore, although
+there are no examples above, the weekday needn’t be
+“<code>Sun</code>” in either form, but can be the usual
+three-character English abbreviation for any day of the week.</p>
+
+<p>And the US rules give us more examples of a couple of things
+already mentioned:</p>
+
+<ul>
+<li>The rules for changing to and from daylight saving time are
+actually <i>different sets</i> of rules; and the two sets can change
+independently. Consider, for example, that the rule for the return to
+standard time stayed the same from 1967 to 2006; but the rule for the
+transition to daylight saving time changed several times in the same
+period. There can also be periods, 1946 to 1966 for example, when no
+rule from this group is in effect, and so either no transition
+happened in those years, or some other rule is in effect (perhaps a
+state or other more local rule).</li>
+
+<li>The <code>SAVE</code> and <code>LETTER</code> columns
+contain <i>steady state</i>, not transitions. Consider, for example,
+the transition from “war time” to “peace time”
+that happened on August 14, 1945. The “1:00” in
+the <code>SAVE</code> column is <i>not</i> an instruction to advance
+the clock an hour. It means that clocks should <i>be</i> one hour
+ahead of standard time, which they already are because of the previous
+rule, so there should be no change.</li>
+
+</ul>
+
+<p>OK, now let’s look at a Zone record:</p>
+
+<table border="1">
+<tr>
+ <th colspan="5">From the Source File</th>
+</tr>
+<tr>
+ <td colspan="6" align="center"><table><tr><td>
+<pre>
+#Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Chicago -5:50:36 - LMT 1883 Nov 18 12:09:24
+ -6:00 US C%sT 1920
+ -6:00 Chicago C%sT 1936 Mar 1 2:00
+ -5:00 - EST 1936 Nov 15 2:00
+ -6:00 Chicago C%sT 1942
+ -6:00 US C%sT 1946
+ -6:00 Chicago C%sT 1967
+ -6:00 US C%sT
+</pre>
+ </td></tr></table></td>
+</tr>
+<tr>
+ <th colspan="5">Columns Renamed</th>
+</tr>
+<tr>
+ <th rowspan="2">Standard Offset<br>
+ from <a href="https://en.wikipedia.org/wiki/Prime_Meridian">Prime
+ Meridian</a></th>
+ <th rowspan="2">Daylight<br>Saving Time</th>
+ <th rowspan="2">Abbreviation(s)</th>
+ <th colspan="2">Ending at Local Time</th>
+</tr>
+<tr>
+ <th>Date</th>
+ <th>Time</th>
+</tr>
+<tr align="center">
+ <td>−5:50:36</td>
+ <td>not observed</td>
+ <td>LMT</td>
+ <td>1883-11-18</td>
+ <td>12:09:24</td>
+</tr>
+<tr align="center">
+ <td rowspan="2">−6:00:00</td>
+ <td>US rules</td>
+ <td rowspan="2">CST or CDT</td>
+ <td>1920-01-01</td>
+ <td>00:00:00</td>
+</tr>
+<tr align="center">
+ <td>Chicago rules</td>
+ <td>1936-03-01</td>
+ <td rowspan="2">02:00:00</td>
+</tr>
+<tr align="center">
+ <td>−5:00:00</td>
+ <td>not observed</td>
+ <td>EST</td>
+ <td>1936-11-15</td>
+</tr>
+<tr align="center">
+ <td rowspan="4">−6:00:00</td>
+ <td>Chicago rules</td>
+ <td>CST or CDT</td>
+ <td>1942-01-01</td>
+ <td rowspan="3">00:00:00</td>
+</tr>
+<tr align="center">
+ <td>US rules</td>
+ <td>CST, CWT or CPT</td>
+ <td>1946-01-01</td>
+</tr>
+<tr align="center">
+ <td>Chicago rules</td>
+ <td rowspan="2">CST or CDT</td>
+ <td>1967-01-01</td>
+</tr>
+<tr align="center">
+ <td>US rules</td>
+ <td colspan="2">—</td>
+</tr>
+</table>
+
+<p>There are a couple of interesting differences between Zones and Rules.</p>
+
+<p>First, and somewhat trivially, whereas Rules are considered to
+contain one or more records, a Zone is considered to be a single
+record with zero or more <i>continuation lines</i>. Thus, the keyword,
+“<code>Zone</code>,” and the zone name are not
+repeated. The last line is the one without anything in
+the <code>[UNTIL]</code> column.</p>
+
+<p>Second, and more fundamentally, each line of a Zone represents a
+steady state, not a transition between states. The state exists from
+the date and time in the previous line’s <code>[UNTIL]</code>
+column up to the date and time in the current
+line’s <code>[UNTIL]</code> column. In other words, the date and
+time in the <code>[UNTIL]</code> column is the instant that separates
+this state from the next. Where that would be ambiguous because
+we’re setting our clocks back, the <code>[UNTIL]</code> column
+specifies the first occurrence of the instant. The state specified by
+the last line, the one without anything in the <code>[UNTIL]</code>
+column, continues to the present.</p>
+
+<p>The first line typically specifies the mean solar time observed
+before the introduction of standard time. Since there’s no line before
+that, it has no beginning. <code>8-) </code> For some places near the <a
+href="https://en.wikipedia.org/wiki/International_Date_Line">International
+Date Line</a>, the first <i>two</i> lines will show solar times
+differing by 24 hours; this corresponds to a movement of the Date
+Line. For example:</p>
+
+<pre>
+#Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone America/Juneau 15:02:19 - LMT 1867 Oct 18
+ -8:57:41 - LMT ...
+</pre>
+
+<p>When Alaska was purchased from Russia in 1867, the Date Line moved
+from the Alaska/Canada border to the Bering Strait; and the time in
+Alaska was then 24 hours earlier than it had
+been. <code><aside></code>(6 October in the Julian calendar,
+which Russia was still using then for religious reasons, was followed
+by <i>a second instance of the same day with a different name</i>, 18
+October in the Gregorian calendar. Isn’t civil time
+wonderful? <code>8-)</code>)<code></aside></code></p>
+
+<p>The abbreviation, “LMT” stands for “local mean
+time”, which is an invention of
+the <a href="https://en.wikipedia.org/wiki/Tz_database">tz
+database</a> and was probably never actually used during the
+period. Furthermore, the value is almost certainly wrong except in the
+archetypal place after which the zone is named. (The tz database
+usually doesn’t provide a separate Zone record for places where
+nothing significant happened after 1970.)</p>
+
+<p>The <code>RULES</code> column tells us whether daylight saving time is being observed:
+<ul>
+<li>A hyphen, a kind of null value, means that we have not set our
+clocks ahead of standard time.</li>
+
+<li>An amount of time (usually but not necessarily “1:00”
+meaning one hour) means that we have set our clocks ahead by that
+amount.</li>
+
+<li>Some alphabetic string means that we <i>might have</i> set our
+clocks ahead; and we need to check the rule the name of which is the
+given alphabetic string.</li>
+</ul>
+
+<p>An example of a specific amount of time is:</p>
+<pre>
+#Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Pacific/Honolulu ... 1933 Apr 30 2:00
+ -10:30 1:00 HDT 1933 May 21 2:00
+ ...
+</pre>
+
+<p>Hawaii tried daylight saving time for three weeks in 1933 and
+decided they didn’t like it. <code>8-) </code>Note that
+the <code>GMTOFF</code> column always contains the standard time
+offset, so the wall clock time during this period was GMT −
+10:30 + 1:00 = GMT − 9:30.</p>
+
+<p>The <code>FORMAT</code> column specifies the usual abbreviation of
+the time zone name. It can have one of three forms:</p>
+<ul>
+
+<li>a string of three or more characters that are either ASCII alphanumerics,
+“<code>+</code>”, or “<code>-</code>”,
+in which case that’s the abbreviation</li>
+
+<li>a pair of strings separated by a slash
+(‘<code>/</code>’), in which case the first string is the
+abbreviation for the standard time name and the second string is the
+abbreviation for the daylight saving time name</li>
+
+<li>a string containing “<code>%s</code>,” in which case
+the “<code>%s</code>” will be replaced by the text in the
+appropriate Rule’s <code>LETTER</code> column</li>
+</ul>
+
+<p>The last two make sense only if there’s a named rule in effect.</p>
+
+<p>An example of a slash is:</p>
+<pre>
+#Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Europe/London ... 1996
+ 0:00 EU GMT/BST
+</pre>
+
+<p>The current time in the UK is called either Greenwich mean time or
+British summer time.</p>
+
+<p>One wrinkle, not fully explained in <code>zic.8.txt</code>, is what
+happens when switching to a named rule. To what values should
+the <code>SAVE</code> and <code>LETTER</code> data be initialized?</p>
+
+<ul>
+<li>If at least one transition has happened, use
+the <code>SAVE</code> and <code>LETTER</code> data from the most
+recent.</li>
+
+<li>If switching to a named rule before any transition has happened,
+assume standard time (<code>SAVE</code> zero), and use
+the <code>LETTER</code> data from the earliest transition with
+a <code>SAVE</code> of zero.
+
+</ul>
+
+<p>And three last things about the <code>FORMAT</code> column:</p>
+<ul>
+
+<li>The <a href="https://en.wikipedia.org/wiki/Tz_database">tz
+database</a> gives abbreviations for time zone names in <i>popular
+usage</i>, which is not necessarily “correct” by law. For
+example, the last line in
+<code>Zone</code> <code>Pacific/Honolulu</code> (shown below) gives
+“HST” for “Hawaii standard time” even though the
+<a href="http://www.law.cornell.edu/uscode/html/uscode15/usc_sec_15_00000263----000-.html">legal</a>
+name for that time zone is “Hawaii-Aleutian standard time.”
+This author has read that there are also some places in Australia where
+popular time zone names differ from the legal ones.
+
+<li>No attempt is made to <a
+href="https://en.wikipedia.org/wiki/Internationalization_and_localization">localize</a>
+the abbreviations. They are intended to be the values returned through the
+<code>"%Z"</code> format specifier to
+<a href="https://en.wikipedia.org/wiki/C_(programming_language)">C</a>’s
+<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html"><code>strftime</code></a>
+function in the
+<a href="http://www.chemie.fu-berlin.de/chemnet/use/info/libc/libc_19.html#SEC324">“C” locale</a>.
+
+<li>If there is no generally-accepted abbreviation for a time zone,
+a numeric offset is used instead, e.g., <code>+07</code> for 7 hours
+ahead of Greenwich. By convention, <code>-00</code> is used in a
+zone while uninhabited, where the offset is zero but in some sense
+the true offset is undefined.
+</ul>
+
+<p>As a final example, here’s the complete history for Hawaii:</p>
+
+<table border="1">
+<tr>
+ <th colspan="6">Relevant Excerpts from the US Rules</th>
+</tr>
+<tr>
+ <td colspan="6" align="center"><table><tr><td>
+<pre>
+#Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule US 1918 1919 - Oct lastSun 2:00 0 S
+Rule US 1942 only - Feb 9 2:00 1:00 W # War
+Rule US 1945 only - Aug 14 23:00u 1:00 P # Peace
+Rule US 1945 only - Sep 30 2:00 0 S
+</pre>
+ </td></tr></table></td>
+</tr>
+<tr>
+ <th colspan="6">The Zone Record</th>
+</tr>
+<tr>
+ <td colspan="6" align="center"><table><tr><td>
+<pre>
+#Zone NAME GMTOFF RULES FORMAT [UNTIL]
+Zone Pacific/Honolulu -10:31:26 - LMT 1900 Jan 1 12:00
+ -10:30 - HST 1933 Apr 30 2:00
+ -10:30 1:00 HDT 1933 May 21 2:00
+ -10:30 US H%sT 1947 Jun 8 2:00
+ -10:00 - HST
+</pre>
+ </td></tr></table></td>
+</tr>
+<tr>
+ <th colspan="6">What We Infer</th>
+</tr>
+<tr>
+ <th rowspan="2">Wall-Clock<br>Offset from<br>Prime Meridian</th>
+ <th rowspan="2">Adjust<br>Clocks</th>
+ <th colspan="2">Time Zone</th>
+ <th colspan="2">Ending at Local Time</th>
+</tr>
+<tr>
+ <th>Abbrv.</th>
+ <th>Name</th>
+ <th>Date</th>
+ <th>Time</th>
+</tr>
+<tr align="center">
+ <td>−10:31:26</td>
+ <td>—</td>
+ <td>LMT</td>
+ <td>local mean time</td>
+ <td>1900-01-01</td>
+ <td>12:00</td>
+</tr>
+<tr align="center">
+ <td>−10:30</td>
+ <td>+0:01:26</td>
+ <td>HST</td>
+ <td>Hawaii standard time</td>
+ <td>1933-04-30</td>
+ <td rowspan="3">02:00</td>
+</tr>
+<tr align="center">
+ <td>−9:30</td>
+ <td>+1:00</td>
+ <td>HDT</td>
+ <td>Hawaii daylight time</td>
+ <td>1933-05-21</td>
+</tr>
+<tr align="center">
+ <td>−10:30¹</td>
+ <td>−1:00¹</td>
+ <td>HST¹</td>
+ <td>Hawaii standard time</td>
+ <td>1942-02-09</td>
+</tr>
+<tr align="center">
+ <td rowspan="2">−9:30</td>
+ <td>+1:00</td>
+ <td>HWT</td>
+ <td>Hawaii war time</td>
+ <td>1945-08-14</td>
+ <td>13:30²</td>
+</tr>
+<tr align="center">
+ <td>0</td>
+ <td>HPT</td>
+ <td>Hawaii peace time</td>
+ <td>1945-09-30</td>
+ <td rowspan="2">02:00</td>
+</tr>
+<tr align="center">
+ <td>−10:30</td>
+ <td>−1:00</td>
+ <td rowspan="2">HST</td>
+ <td rowspan="2">Hawaii standard time</td>
+ <td>1947-06-08</td>
+</tr>
+<tr align="center">
+ <td>−10:00³</td>
+ <td>+0:30³</td>
+ <td colspan="2">—</td>
+</tr>
+<tr>
+ <td colspan="6">
+ ¹Switching to US rules…most recent transition (in 1919) was to standard time
+ </td>
+</tr>
+<tr>
+ <td colspan="6">
+ ²23:00 <a href="https://en.wikipedia.org/wiki/Universal_Time">UT</a>
+ + (−9:30) = 13:30 local
+ </td>
+</tr>
+<tr>
+ <td colspan="6">
+ ³Since <a href="https://en.wikipedia.org/wiki/ISO_8601">1947–06–08T12:30Z</a>,
+ the civil time in Hawaii has been
+ <a href="https://en.wikipedia.org/wiki/Universal_Time">UT</a>/<a href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">UTC</a>
+ − 10:00 year-round.
+ </td>
+</tr>
+</table>
+
+<p>There will be a short quiz later. <code>8-)</code></p>
+
+<hr>
+<address>
+This web page is in the public domain, so clarified as of
+2015-10-20 by Bill Seymour.
+<br>
+All suggestions and corrections will be welcome; all flames will be amusing.
+Mail to was at pobox dot com.
+</address>
+</body>
+</html>
Deleted: vendor/tzcode/2016f/tz-link.htm
===================================================================
--- vendor/tzcode/dist/tz-link.htm 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tz-link.htm 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,660 +0,0 @@
-<!DOCTYPE html
- PUBLIC "-//W3C//DTD HTML 4.01//EN"
- "http://www.w3.org/TR/html4/strict.dtd">
-<html>
-<head>
-<title>Sources for Time Zone and Daylight Saving Time Data</title>
-<link rel="schema.DC" href="http://purl.org/DC/elements/1.1/">
-<meta http-equiv="Content-type" content='text/html; charset="US-ASCII"'>
-<meta name="DC.Creator" content="Eggert, Paul">
-<meta name="DC.Contributor" content="Olson, Arthur David">
-<meta name="DC.Date" content="2012-11-13">
-<meta name="DC.Description"
- content="Sources of information about time zones and daylight saving time">
-<meta name="DC.Identifier"
- content="http://www.iana.org/time-zones/repository/tz-link.htm">
-<meta name="Keywords"
- content="database,daylight saving,DST,time zone,timezone,tz,zoneinfo">
-</head>
-<body>
-<h1>Sources for Time Zone and Daylight Saving Time Data</h1>
-<h2>The <code>tz</code> database</h2>
-<p>
-The <a href="http://en.wikipedia.org/wiki/Public_domain">public-domain</a>
-time zone database contains code and data
-that represent the history of local time
-for many representative locations around the globe.
-It is updated periodically to reflect changes made by political bodies
-to <a href="http://en.wikipedia.org/wiki/Time_zone">time zone</a>
-boundaries, <a
-href="http://en.wikipedia.org/wiki/Coordinated_Universal_Time"><abbr
-title="Coordinated Universal Time">UTC</abbr></a> offsets, and
-<a href="http://en.wikipedia.org/wiki/Daylight_saving">daylight-saving</a>
-rules.
-This database (often called <code>zoneinfo</code> or <a
-href="http://en.wikipedia.org/wiki/Tz_database"><code>tz</code></a>)
-is used by several implementations,
-including
-<a href="http://www.gnu.org/software/libc/">the
-<abbr title="GNU's Not Unix">GNU</abbr>
-C Library</a> used in
-<a href="http://www.linux.org/"><abbr>GNU</abbr>/Linux</a>,
-<a href="http://www.android.com/">Android</a>,
-<a href="http://www.freebsd.org/">FreeBSD</a>,
-<a href="http://netbsd.org/">NetBSD</a>,
-<a href="http://openbsd.org/">OpenBSD</a>,
-<a href="http://cygwin.com/">Cygwin</a>,
-<a href="http://www.delorie.com/djgpp/"><abbr
-title="DJ's GNU Programming Platform">DJGPP</abbr></a>,
-<a href="http://ibm.com/aix">AIX</a>,
-<a href="http://h71000.www7.hp.com/">OpenVMS</a>,
-<a href="http://oracle.com/database">Oracle Database</a>,
-<a href="http://www.apple.com/osx/">OS X</a>,
-<a href="http://sun.com/software/solaris">Solaris</a>,
-<a href="http://h30097.www3.hp.com/">Tru64</a>, and
-<a href="http://sco.com/products/unixware">UnixWare</a>.</p>
-<p>
-Each location in the database represents a national region where all
-clocks keeping local time have agreed since 1970.
-Locations are identified by continent or ocean and then by the name of
-the location, which is typically the largest city within the region.
-For example, <code>America/New_York</code>
-represents most of the <abbr title="United States">US</abbr> eastern time zone;
-<code>America/Phoenix</code> represents most of Arizona, which
-uses mountain time without daylight saving time (<abbr
-title="daylight saving time">DST</abbr>);
-<code>America/Detroit</code> represents most of Michigan, which uses
-eastern time but with different <abbr>DST</abbr> rules in 1975;
-and other entries represent smaller regions like Starke County,
-Indiana, which switched from central to eastern time in 1991
-and switched back in 2006.
-To use the database on an extended <a
-href="http://en.wikipedia.org/wiki/POSIX"><abbr
-title="Portable Operating System Interface">POSIX</abbr></a>
-implementation set the <code>TZ</code> environment variable to
-the location's full name, e.g., <code>TZ="America/New_York"</code>.</p>
-<p>
-In the <code>tz</code> database's
-<a href="ftp://ftp.iana.org/tz/releases/"><abbr
-title="File Transfer Protocol">FTP</abbr> releases</a>
-the code is in the file <code>tzcode<var>C</var>.tar.gz</code>,
-where <code><var>C</var></code> is the code's version;
-similarly, the data are in <code>tzdata<var>D</var>.tar.gz</code>,
-where <code><var>D</var></code> is the data's version.
-Each version is a four-digit year followed by lower-case letters
-(a through z, then za through zz, then zza through zzz, and so on).
-Convenience links to
-the <a href="ftp://ftp.iana.org/tz/tzcode-latest.tar.gz">latest
-code</a> and
-<a href="ftp://ftp.iana.org/tz/tzdata-latest.tar.gz">latest data</a> revisions
-are also available.
-The following <a
-href="http://en.wikipedia.org/wiki/Unix_shell">shell</a> commands download
-these files to a <abbr>GNU</abbr>/Linux or similar host;
-see the downloaded
-<code>README</code> file for what to do next.</p>
-<pre style="margin-left: 2em"><code>mkdir tz
-cd tz
-<a href="http://www.gnu.org/software/wget/">wget</a> --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
-<a href="http://www.gnu.org/software/gzip/">gzip</a> -dc tzcode-latest.tar.gz | <a href="http://www.gnu.org/software/tar/">tar</a> -xf -
-gzip -dc tzdata-latest.tar.gz | tar -xf -
-</code></pre>
-<p>
-The code and data files can also be obtained from the
-<a href="http://www.iana.org/time-zones">timezone web page</a>
-of the <a href="http://www.iana.org">Internet Assigned Numbers
-Authority (IANA)</a>.
-An <a href="https://github.com/eggert/tz">unofficial development
-repository</a> of the code and data is available
-in <a href="http://git-scm.com/">Git</a> form
-from <a href="https://github.com/">GitHub</a>; be careful, as this
-repository is less well tested and probably contains more errors.
-<p>
-The code lets you compile the <code>tz</code> source files into
-machine-readable binary files, one for each location. It also lets
-you read a <code>tz</code> binary file and interpret time stamps for that
-location.</p>
-<p>
-The data are by no means authoritative. If you find errors, please
-send changes to the <a href="mailto:tz at iana.org">time zone
-mailing list</a>. You can also <a
-href="http://news.gmane.org/gmane.comp.time.tz">browse recent
-messages</a> sent to the mailing list, <a
-href="https://mm.icann.org/mailman/listinfo/tz">subscribe</a> to it,
-and browse the <a
-href="http://mm.icann.org/pipermail/tz/">archive of old
-messages</a>.</p>
-<p>
-The Web has several other sources for time zone and daylight saving time data.
-Here are some links that may be of interest.
-</p>
-<h2>Web pages using recent versions of the <code>tz</code> database</h2>
-<p>
-These are listed roughly in ascending order of complexity and fanciness.
-</p>
-<ul>
-<li><a href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a>
-lets you see the <code>TZ</code> values directly.</li>
-<li><a
-href="http://convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current
-Time in 1000 Places</a> uses descriptions of the values.</li>
-<li><a href="http://www.timezoneconverter.com/">Time Zone Converter</a>
-uses a pulldown menu.</li>
-<li><a href="http://home.tiscali.nl/~t876506/TZworld.html">Complete
-timezone information for all countries</a> displays tables of DST rules.
-<li><a href="http://timeanddate.com/worldclock/">The World Clock –
-Time Zones</a> lets you sort zone names and convert times.</li>
-<li><a href="http://permatime.com/">Permatime</a> generates and views
-links that refer to a particular point in time and can be displayed in
-multiple timezones.</li>
-<li><a href="http://daylight-savings-time.info/">Daylight Saving Time info</a>
-shows a graph of time
-difference versus time for any pair of locations.</li>
-<li>The <a href="http://worldtimeengine.com/">World Time Engine</a>
-also contains data about time zone boundaries; it supports queries via place
-names and shows location maps.</li>
-<li><a href="http://simpletimerclocks.mozdev.org/">Simple Timer + Clocks</a>
-is a Firefox add-on which uses a timezone data file generated from the
-tz data files.</li>
-</ul>
-<h2>Other time zone database formats</h2>
-<ul>
-<li>The <a href="ftp://ftp.rfc-editor.org/in-notes/rfc2445.txt">
-Internet Calendaring and Scheduling Core Object Specification
-(iCalendar)</a>, Internet <abbr title="Request For
-Comments">RFC</abbr> 2445, published by the (now-concluded) <a
-href="http://ietf.org/html.charters/OLD/calsch-charter.html"><abbr
-title="Internet Engineering Task Force">IETF</abbr>
-Calendaring and Scheduling Working Group (<abbr
-title="Calendaring and Scheduling Working Group">calsch</abbr>)</a>
-covers time zone
-data; see its VTIMEZONE calendar component.
-<a href="http://calconnect.org/">CalConnect, The Calendaring and Scheduling
-Consortium</a> is promoting further work in this area. <a
-href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendationsv1.0.pdf">iCalendar
-TIMEZONE Problems and Recommendations</a> offers guidelines and
-recommendations for the use of VTIMEZONE and <code>tz</code>.</li>
-<li><a href="http://calconnect.org/dstlinks.shtml">Extended Daylight
-Saving Time Links, Advisories and Changes</a> lists vendor material on recent
-daylight saving time changes.</li>
-<li><a
-href="http://calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone
-Registry and Service Recommendations</a> discusses a
-strategy for defining and deploying a time zone
-registration process that would establish unique names for each
-version of each <code>tz</code> zone, along with a polygonal
-representation of the geographical area corresponding to the
-zone.</li>
-<li>The <a
-href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a>
-list discusses <a
-href="http://www.w3.org/RDF/"><abbr
-title="Resource Description Framework">RDF</abbr></a>-based calendar
-and group scheduling systems, and has a <a
-href="http://www.w3.org/2002/12/cal/#tzd">workspace on time zone
-data</a> converted from <code>tz</code>. An earlier <a
-href="http://www.w3.org/2000/01/foo">schema</a> was sketched out.</li>
-</ul>
-<h2>Other <code>tz</code> compilers</h2>
-<ul>
-<li><a href="http://sourceforge.net/projects/vzic/">Vzic iCalendar
-Timezone Converter</a> describes a <a
-href="http://en.wikipedia.org/wiki/C_%28programming_language%29">C</a>
-program that compiles
-<code>tz</code> source into iCalendar-compatible VTIMEZONE files.
-Vzic is freely
-available under the <a
-href="http://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr>
-General Public License (<abbr
-title="General Public License">GPL</abbr>)</a>.</li>
-<li><a href="http://sourceforge.net/projects/tzical">tziCal - tz
-database conversion utility</a> is like Vzic, except for the <a
-href="http://msdn.microsoft.com/netframework">.NET framework</a>.</li>
-<li><a
-href="http://search.cpan.org/dist/DateTime-TimeZone/">DateTime::TimeZone</a>
-contains a script <code>parse_olson</code> that compiles
-<code>tz</code> source into <a href="http://www.perl.org/">Perl</a>
-modules. It is part of the Perl <a
-href="http://datetime.perl.org/">DateTime Project</a>, which is freely
-available under both the <abbr>GPL</abbr> and the Perl Artistic
-License. DateTime::TimeZone also contains a script
-<code>tests_from_zdump</code> that generates test cases for each clock
-transition in the <code>tz</code> database.</li>
-<li><a href="http://icu-project.org/">International Components for
-Unicode (<abbr>ICU</abbr>)</a> contains C/C++ and <a
-href="http://en.wikipedia.org/wiki/Java_%28programming_language%29">Java</a>
-libraries for internationalization that
-has a compiler from <code>tz</code> source
-into an <abbr>ICU</abbr>-specific format.
-<abbr>ICU</abbr> is freely available under a
-<abbr title="Berkeley Software Distribution">BSD</abbr>-style license.</li>
-<li><a href="http://joda-time.sourceforge.net/">Joda Time - Java date
-and time <abbr title="Application Program Interface">API</abbr></a>
-contains a class
-<code>org.joda.time.tz.ZoneInfoCompiler</code> that compiles
-<code>tz</code> source into a Joda-specific binary format. Joda Time
-is freely available under a <abbr>BSD</abbr>-style license.</li>
-<li><a href="http://pytz.sourceforge.net">PyTZ - Python Time
-Zone Library</a> compiles <code>tz</code> source into
-<a href="http://python.org/">Python</a>.
-It is freely available under a <abbr>BSD</abbr>-style license.</li>
-<li><a href="http://tzinfo.rubyforge.org/">TZInfo - Ruby Timezone Library</a>
-compiles <code>tz</code> source into
-<a href="http://ruby-lang.org">Ruby</a>.
-It is freely available under the <abbr
-title="Massachusetts Institute of Technology">MIT</abbr> license.</li>
-<li>The <a href="http://chronos-st.org/">Chronos Date/Time
-Library</a> is
-a <a href="http://en.wikipedia.org/wiki/Smalltalk">Smalltalk</a> class
-library that compiles <code>tz</code> source into a time zone repository whose format
-is either proprietary or an <a href="http://www.w3.org/XML/"><abbr
-title="Extensible Markup Language">XML</abbr></a>-encoded
-representation.</li>
-<li>Starting with version 8.5, <a href="http://tcl.tk/">Tcl</a>
-contains a developer-oriented parser that compiles <samp>tz</samp>
-source into text files, along with a runtime that can read those
-files. Tcl is freely available under a <abbr>BSD</abbr>-style
-license.</li>
-</ul>
-<h2>Other <code>tz</code> binary file readers</h2>
-<ul>
-<li>The <a
-href="http://www.gnu.org/software/libc/"><abbr>GNU</abbr> C
-Library</a>
-has an independent, thread-safe implementation of
-a <code>tz</code> binary file reader.
-This library is freely available under the
-<a href="http://www.gnu.org/copyleft/lesser.html">
-<abbr>GNU</abbr> Lesser General Public License
-(<abbr title="Lesser General Public License">LGPL</abbr>)</a>,
-and is widely used in <abbr>GNU</abbr>/Linux systems.</li>
-<li><a href="http://bmsi.com/java/#TZ">ZoneInfo.java</a>
-is a <code>tz</code> binary file reader written in Java.
-It is freely available under the <abbr>LGPL</abbr>.</li>
-<li>Tcl, mentioned above, also contains a
-<code>tz</code> binary file reader.</li>
-<li><a href="http://search.cpan.org/perldoc?DateTime::TimeZone::Tzfile">
-DateTime::TimeZone::Tzfile</a>
-is a <code>tz</code> binary file reader written in Perl.
-It is freely available under the same terms as Perl
-(dual <abbr>GPL</abbr> and Artistic license).</li>
-</ul>
-<h2>Other <code>tz</code>-based time zone software</h2>
-<ul>
-<li><a href="http://foxclocks.org/">FoxClocks</a>
-is an extension for <a href="http://google.com/chrome">Google
-Chrome</a> and for <a
-href="http://developer.mozilla.org/en/docs/Toolkit_API">Mozilla
-Toolkit</a> applications like <a
-href="http://mozilla.com/firefox">Firefox</a> and <a
-href="http://mozilla.com/thunderbird">Thunderbird</a>.
-It displays multiple clocks in the application window, and has a mapping
-interface to <a href="http://earth.google.com/">Google Earth</a>.
-It is freely available under the <abbr>GPL</abbr>.</li>
-<li><a
-href="http://users.skynet.be/Peter.Verthez/projects/intclock/">International
-clock (intclock)</a> is a multi-timezone clock for
-<abbr>GNU</abbr>/Linux and similar systems. It is freely available
-under the <abbr>GPL</abbr>.</li>
-<li><a href="http://www.oracle.com/us/technologies/java/overview/index.html">Oracle
-Java</a> releases since 1.4
-contain a copy of a subset of a recent <code>tz</code> database in a
-Java-specific format.</li>
-<li><a href="http://kimmo.suominen.com/sw/timezone/">Time Zone</a> is
-a <a href="http://wordpress.org/">WordPress</a> plugin. It is freely
-available under a <abbr>BSD</abbr>-style license.</li>
-<li><a href="http://www.relativedata.com/time-zone-master">Time Zone
-Master</a> is a Microsoft Windows clock program that can automatically
-download, compile and use the <code>tzdata<var>D</var>.tar.gz</code>
-files as they are released. The Basic version is free.</li>
-<li><a
-href="http://veladg.com/velaterra.html">VelaTerra</a> is
-a Mac OS X program. Its developers
-<a href="http://veladg.com/tzoffer.html">offer free
-licenses</a> to <code>tz</code> contributors.</li>
-<li><a
-href="http://worldtimeexplorer.com/">World Time Explorer</a> is a
-Microsoft Windows program.</li>
-</ul>
-<h2>Other time zone databases</h2>
-<ul>
-<li><a href="http://www.astro.com/cgi/aq.cgi">Atlas Query</a>
-is Astrodienst's Web version of Shanks and Pottenger's
-time zone history atlases published in both <a
-href="http://astrocom.com/astrology-products/software/acs-atlas-software">computer</a>
-and book form (<a
-href="http://www.astrocom.com/astrology/books/american-atlas">one volume
-for the USA</a>, and <a
-href="http://www.astrocom.com/astrology/books/international-atlas">one for
-other locations</a>) by <a
-href="http://astrocom.com/">Astro Computing Services</a>.</li>
-<li><a href="http://worldtime.com/">WORLDTIME: interactive atlas,
-time info, public holidays</a>
-contains information on local time, sunrise and sunset,
-and public holidays in several hundred cities around the world.</li>
-<li><a href="http://worldtimeserver.com/">World Time Server</a>
-is another time zone database.</li>
-<li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a>
-contains data from the Time Service Department of the
-<abbr>US</abbr> Naval Observatory, used as the source
-for the <code>usno*</code> files in the <code>tz</code> distribution.</li>
-<li>The <a href="http://iata.org/ps/publications/SSIM.htm">Standard
-Schedules Information Manual</a> of the
-<a href="http://iata.org/index.htm">International Air Transport
-Association</a>
-gives current time zone rules for airports served by commercial aviation.</li>
-<li>Some Microsoft Windows versions contain time zone information in
-an undocumented format, with IDs that can be mapped to <code>TZ</code>
-values using the <a
-href="http://unicode.org/repos/cldr-tmp/trunk/diff/supplemental/zone_tzid.html">Zone
-→ Tzid table</a> maintained by the <abbr
-title="Common Locale Data Repository">CLDR</abbr> data mentioned
-below.</li>
-</ul>
-<h2>Maps</h2>
-<ul>
-<li>The <a href="https://www.cia.gov/">United States Central
-Intelligence Agency (<abbr
-title="Central Intelligence Agency">CIA</abbr>)</a> publishes a <a
-href="https://www.cia.gov/library/publications/the-world-factbook/graphics/ref_maps/physical/pdf/standard_time_zones_of_the_world.pdf">time
-zone map</a>; the
-<a
-href="http://www.lib.utexas.edu/maps/world.html">Perry-Castañeda
-Library Map Collection</a>
-of the University of Texas at Austin has copies of
-recent editions.
-The pictorial quality is good,
-but the maps do not indicate summer time,
-and parts of the data are a few years out of date.</li>
-<li><a href="http://worldtimezone.com/">Current time around the world
-and standard time zones map of the world</a>
-has several fancy time zone maps; it covers Russia particularly well.
-The maps' pictorial quality is not quite as good as the
-<abbr>CIA</abbr>'s
-but the maps are more up to date.</li>
-</ul>
-<h2>Time zone boundaries</h2>
-<ul>
-<li><a href="http://efele.net/maps/tz/">TZ timezone maps</a> contains a <a
-href="http://en.wikipedia.org/wiki/Shapefile">shapefile</a> of the
-<code>tz</code> regions in the world.</li>
-<li><a href="http://statoids.com/statoids.html">Administrative Divisions
-of Countries ("Statoids")</a> contains detailed lists of
-<code>tz</code>-related zone subdivision data.</li>
-<li><a href="http://home.tiscali.nl/~t876506/Multizones.html">Time
-zone boundaries for multizone countries</a> summarizes legal
-boundaries between time zones within countries.</li>
-<li>Manifold.net's <a
-href="http://manifold.net/info/freestuff.shtml">Free Stuff for
-Manifold System Users</a> includes a Manifold-format map of
-world time zone boundaries distributed under the
-<abbr>GPL</abbr>.</li>
-<li>The <abbr>US</abbr> Geological Survey's National Atlas of
-the United States
-publishes the <a href="http://nationalatlas.gov/mld/timeznp.html">Time
-Zones of the United States</a> in the public domain.</li>
-<li>The GeoCommunity lists several commercial sources for <a
-href="http://spatialnews.geocomm.com/features/timezones/">International
-Time Zones and Time Zone Data</a>.</li>
-<li>A ship within the <a
-href="http://en.wikipedia.org/wiki/Territorial_waters">territorial
-waters</a> of any nation uses that nation's time. In international
-waters, time zone boundaries are meridians 15° apart, except that
-UTC−12 and UTC+12 are each 7.5° wide and are separated by
-the 180° meridian (not by the International Date Line, which is
-for land and territorial waters only). A captain can change ship's
-clocks any time after entering a new time zone; midnight changes are
-common.</li>
-</ul>
-<h2>Civil time concepts and history</h2>
-<ul>
-<li><a href="http://physics.nist.gov/GenInt/Time/time.html">A
-Walk through Time</a>
-surveys the evolution of timekeeping.</li>
-<li><a href="http://webexhibits.org/daylightsaving/">About Daylight
-Saving Time - History, rationale, laws & dates</a>
-is an overall history of <abbr>DST</abbr>.</li>
-<li><a href="http://energy.ca.gov/daylightsaving.html">Saving Time,
-Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li>
-<li><a href="http://seizethedaylight.com/dst/">A Brief
-History of Daylight Saving Time</a> summarizes some of the contentious
-history of <abbr>DST</abbr>.</li>
-<li><a href="http://toi.inrim.it/uk/toi.html">The
-Time of Internet</a>
-describes time zones and daylight saving time,
-with diagrams.
-The time zone map is out of date, however.</li>
-<li><a href="http://www.staff.science.uu.nl/~gent0113/idl/idl.htm">A History of
-the International Date Line</a> tells the story of the most important
-time zone boundary.</li>
-<li><a href="http://statoids.com/tconcept.html">Basic Time
-Zone Concepts</a> discusses terminological issues behind time zones.</li>
-</ul>
-<h2>National histories of legal time</h2>
-<dl>
-<dt>Australia</dt>
-<dd>The Parliamentary Library has commissioned <a
-href="http://www.aph.gov.au/binaries/library/pubs/rn/2006-07/07rn13.pdf">research
-note on daylight saving time in Australia</a>.
-The Bureau of Meteorology publishes a list of
-<a href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">Implementation Dates of Daylight Savings Time within Australia</a>.</dd>
-<dt>Belgium</dt>
-<dd>The Royal Observatory of Belgium maintains a table of <a
-href="http://www.astro.oma.be/GENERAL/INFO/nli001a.html"
-hreflang="nl">time in Belgium (in Dutch)</a>.</dd>
-<dt>Brazil</dt>
-<dd>The Time Service Department of the National Observatory
-records <a href="http://pcdsh01.on.br/DecHV.html"
-hreflang="pt-BR">Brazil's daylight saving time decrees (in
-Portuguese)</a>.</dd>
-<dt>Canada</dt>
-<dd>National Research Council Canada publishes current
-and some older information about <a
-href="http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html">time
-zones & daylight saving time</a>.</dd>
-<dt>Chile</dt>
-<dd>The Chilean Hydrographic and Oceanographic Service publishes a <a
-href="http://www.horaoficial.cl/horaof.htm" hreflang="es"> history of
-official time (in Spanish)</a>.</dd>
-<dt>Germany</dt>
-<dd>The National Institute for Science and Technology maintains the <a
-href="http://www.ptb.de/cms/en/fachabteilungen/abt4/fb-44/ag-441/realisation-of-legal-time-in-germany.html">Realisation of
-Legal Time in Germany</a>.</dd>
-<dt>Israel</dt>
-<dd>The Interior Ministry periodically issues <a
-href="ftp://ftp.cs.huji.ac.il/pub/tz/announcements"
-hreflang="he">announcements (in Hebrew)</a>.</dd>
-<dt>Mexico</dt>
-<dd>The Investigation and Analysis Service of the Mexican Library of
-Congress has published a <a
-href="http://www.cddhcu.gob.mx/bibliot/publica/inveyana/polisoc/horver/"
-hreflang="es">history of Mexican local time (in Spanish)</a>.</dd>
-<dt>Malaysia</dt>
-<dd>See Singapore below.</dd>
-<dt>Netherlands</dt>
-<dd><a href="http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm"
-hreflang="nl">Legal time in the Netherlands (in Dutch)</a>
-covers the history of local time in the Netherlands from ancient times.</dd>
-<dt>New Zealand</dt>
-<dd>The Department of Internal Affairs maintains a brief <a
-href="http://www.dia.govt.nz/Daylight-Saving-History">History of
-Daylight Saving</a>. The privately-maintained <a
-href="http://astrologyschool.com/nztime.html">History of New Zealand
-time</a> has more details.</dd>
-<dt>Singapore</dt>
-<dd><a
-href="http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html">Why
-is Singapore in the "Wrong" Time Zone?</a> details the
-history of legal time in Singapore and Malaysia.</dd>
-<dt>United Kingdom</dt>
-<dd><a
-href="http://www.polyomino.org.uk/british-time/">History of
-legal time in Britain</a> discusses in detail the country
-with perhaps the best-documented history of clock adjustments.
-The National Physical Laboratory also maintains an <a
-href="http://www.npl.co.uk/educate-explore/what-is-the-time/archive-of-summer-time-dates-1916-2006">Archive
-of Summer time dates</a>.</dd>
-</dl>
-<h2>Precision timekeeping</h2>
-<ul>
-<li><a
-href="http://literature.agilent.com/litweb/pdf/5965-7984E.pdf">The
-Science of Timekeeping</a> is a thorough introduction
-to the theory and practice of precision timekeeping.</li>
-<li><a href="http://www.ntp.org/"><abbr
-title="Network Time Protocol">NTP</abbr>: The Network
-Time Protocol</a>
-discusses how to synchronize clocks of
-Internet hosts.</li>
-<li><a
-href="ftp://ftp.rfc-editor.org/in-notes/rfc4833.txt">Timezone
-Options for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a>
-(Internet <abbr>RFC</abbr> 4833)
-specifies a <a
-href="http://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol">DHCP</a>
-option for a server to configure
-a client's time zone and daylight saving settings automatically.</li>
-<li><a href="http://gauss.gge.unb.ca/GMT.UT.and.the.RGO.html">A Few
-Facts Concerning <abbr title="Greenwich Mean Time">GMT</abbr>, <abbr
-title="Universal Time">UT</abbr>, and
-the <abbr title="Royal Greenwich Observatory">RGO</abbr></a>
-answers questions like "What is the
-difference between <abbr>GMT</abbr> and <abbr>UTC</abbr>?"</li>
-<li><a
-href="http://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical
-Times</a> explains more abstruse astronomical time scales like
-<abbr title="Terrestrial Dynamic Time">TDT</abbr>,
-<abbr title="Geocentric Coordinate Time">TCG</abbr>, and
-<abbr title="Barycentric Dynamic Time">TDB</abbr>.
-<a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time
-Scales</a> goes into more detail, particularly for historical variants.</li>
-<li>The <a href="http://iau.org/"><abbr
-title="International Astronomical Union">IAU</abbr></a>'s <a
-href="http://www.iau-sofa.rl.ac.uk/"><abbr
-title="Standards Of Fundamental Astronomy">SOFA</abbr></a>
-initiative publishes Fortran
-code for converting among time scales like
-<abbr title="International Atomic Time">TAI</abbr>,
-<abbr>TDB</abbr>, <abbr>TDT</abbr> and
-<abbr>UTC</abbr>.</li>
-<li><a href="http://www2.jpl.nasa.gov/basics/bsf2-3.php">Basics of
-Space Flight - Reference Systems - Time Conventions</a>
-briefly explains interplanetary space flight timekeeping.</li>
-<li><a
-href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical
-Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a> briefly
-describes Mars Coordinated Time (<abbr
-title="Mars Coordinated Time">MTC</abbr>) and the
-diverse local time
-scales used by each landed mission on Mars.</li>
-<li><a href="http://leapsecond.com/">LeapSecond.com</a> is
-dedicated not only to leap seconds but to precise time and frequency
-in general. It covers the state of the art in amateur timekeeping, and
-how the art has progressed over the past few decades.</li>
-<li><a
-href="http://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html">IERS
-Bulletins</a> contains official publications of the International
-Earth Rotation and Reference Systems Service, which decides
-when leap seconds occur.</li>
-<li>The <a
-href="http://six.pairlist.net/mailman/listinfo/leapsecs">Leap
-Second Discussion List</a> covers <a
-href="http://gauss.gge.unb.ca/papers.pdf/gpsworld.november99.pdf">McCarthy
-and Klepczynski's proposal to discontinue leap seconds</a>,
-discussed further in
-<a href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The
-leap second: its history and possible future</a>.
-<a href="http://www.ucolick.org/~sla/leapsecs/">UTC might be redefined
-without Leap Seconds</a> gives pointers on this
-contentious issue.</li>
-</ul>
-<h2>Time notation</h2>
-<ul>
-<li>
-<a href="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">A Summary of
-the International Standard Date and Time Notation</a> is a good
-summary of
-<a
-href="http://www.iso.org/iso/catalogue_detail?csnumber=40874"><abbr
-title="International Organization for Standardization">ISO</abbr>
-8601:2004 -- Data elements and interchange formats -- Information
-interchange -- Representation of dates and times</a>.</li>
-<li>
-<a href="http://www.w3.org/TR/xmlschema-2/#dateTime"><abbr>XML</abbr>
-Schema: Datatypes - dateTime</a> specifies a format inspired by
-<abbr>ISO</abbr> 8601 that is in common use in XML data.</li>
-<li>
-<a href="ftp://ftp.rfc-editor.org/in-notes/rfc2822.txt">Internet
-Message Format</a> (Internet <abbr>RFC</abbr> 2822) §3.3
-specifies the time notation used in email and <a
-href="ftp://ftp.rfc-editor.org/in-notes/rfc2616.txt"><abbr>HTTP</abbr></a>
-headers.</li>
-<li>
-<a href="ftp://ftp.rfc-editor.org/in-notes/rfc3339.txt">Date and Time
-on the Internet: Timestamps</a> (Internet <abbr>RFC</abbr> 3339)
-specifies an <abbr>ISO</abbr> 8601
-profile for use in new Internet
-protocols.</li>
-<li>
-<a href="http://www.hackcraft.net/web/datetime/">Date & Time
-Formats on the Web</a> surveys web- and Internet-oriented date and time
-formats.</li>
-<li>
-<a href="http://exit109.com/~ghealton/y2k/yrexamples.html">The
-Best of Dates, the Worst of Dates</a> covers many problems encountered
-by software developers when handling dates and time stamps.</li>
-<li>The <a
-href="http://unicode.org/cldr/">Unicode Common Locale Data Repository
-(<abbr>CLDR</abbr>) Project</a> has localizations for time zone names,
-abbreviations, identifiers, and formats. For example, it contains
-French translations for "Eastern European Summer Time", "<abbr
-title="Eastern European Summer Time">EEST</abbr>", and
-"Bucharest". <a
-href="http://unicode.org/cldr/charts/by_type/index.html">By-Type
-Chart</a> shows these values for many locales.
-<abbr>ICU</abbr> contains a mechanism for using this data.</li>
-<li>Alphabetic time zone abbreviations should not be used as unique
-identifiers for <abbr>UTC</abbr> offsets as they are ambiguous in
-practice. For example, "<abbr>EST</abbr>" denotes 5 hours behind
-<abbr>UTC</abbr> in English-speaking North America, but it denotes 10
-or 11 hours ahead of <abbr>UTC</abbr> in Australia; and
-French-speaking North Americans prefer
-"<abbr title="Heure Normale de l'Est">HNE</abbr>" to
-"<abbr>EST</abbr>". For <abbr>POSIX</abbr> the <code>tz</code>
-database contains English abbreviations for all time stamps but in
-many cases these are merely inventions of the database
-maintainers.</li>
-<li>Numeric time zone abbreviations typically count hours east of
-<abbr>UTC</abbr>, e.g., <code>+09</code> for Japan and
-<code>-10</code> for Hawaii. However, the <abbr>POSIX</abbr>
-<code>TZ</code> environment variable uses the opposite convention. For
-example, one might use <code>TZ="JST-9"</code> and
-<code>TZ="HST10"</code> for Japan and Hawaii, respectively. If the
-<code>tz</code> database is available, it is usually better to use
-settings like <code>TZ="Asia/Tokyo"</code> and
-<code>TZ="Pacific/Honolulu"</code> instead, as this should avoid
-confusion, handle old time stamps better, and insulate you better from
-any future changes to the rules. One should never set
-<abbr>POSIX</abbr> <code>TZ</code> to a value like
-<code>"GMT-9"</code>, though, since this would falsely claim that
-local time is nine hours ahead of <abbr>UTC</abbr> and the time zone
-is called "<abbr>GMT</abbr>".</li>
-</ul>
-<h2>Related indexes</h2>
-<ul>
-<li><a href="tz-art.htm">Time and the Arts</a></li>
-<li><a href="http://www.dmoz.org/Reference/Time/">Open Directory -
-Reference: Time</a></li>
-<li><a href="http://dir.yahoo.com/Science/Measurements_and_Units/Time">Yahoo!
-Directory > Science > Measurements and Units > Time</a></li>
-</ul>
-<hr>
-<address>
-This file is in the public domain, so clarified as of
-2009-05-17 by Arthur David Olson.
-<br>
-Please send corrections to this web page to the
-<a href="mailto:tz at iana.org">time zone mailing list</a>.
-</address>
-</body>
-</html>
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+++ vendor/tzcode/2016f/tz-link.htm 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,847 @@
+<!DOCTYPE html
+ PUBLIC "-//W3C//DTD HTML 4.01//EN"
+ "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head profile="http://dublincore.org/documents/2008/08/04/dc-html/">
+<title>Sources for time zone and daylight saving time data</title>
+<link rel="schema.DC" href="http://purl.org/DC/elements/1.1/">
+<meta http-equiv="Content-type" content='text/html; charset="UTF-8"'>
+<meta name="DC.Title"
+ content="Sources for time zone and daylight saving time data">
+<meta name="DC.Creator" content="Eggert, Paul">
+<meta name="DC.Contributor" content="Olson, Arthur David">
+<meta name="DC.Date" content="2016-06-14">
+<meta name="DC.Description"
+ content="Sources of information about time zones and daylight saving time">
+<meta name="DC.Identifier"
+ content="http://www.iana.org/time-zones/repository/tz-link.htm">
+<meta name="Keywords"
+ content="database,daylight saving,DST,time zone,timezone,tz,zoneinfo">
+</head>
+<body>
+<h1>Sources for time zone and daylight saving time data</h1>
+<p>
+Time zone and daylight saving rules are controlled by individual
+governments. They are sometimes changed with little notice, and their
+histories and planned futures are often recorded only fitfully. Here
+is a summary of attempts to organize and record relevant data in this
+area.
+</p>
+<h2>The <code><abbr title="time zone">tz</abbr></code> database</h2>
+<p>
+The <a href="https://en.wikipedia.org/wiki/Public_domain">public-domain</a>
+time zone database contains code and data
+that represent the history of local time
+for many representative locations around the globe.
+It is updated periodically to reflect changes made by political bodies
+to <a href="https://en.wikipedia.org/wiki/Time_zone">time zone</a>
+boundaries and
+<a href="https://en.wikipedia.org/wiki/Daylight_saving_time">daylight-saving</a>
+rules.
+This database (often called <code>zoneinfo</code> or
+<code><abbr>tz</abbr></code>)
+is used by several implementations,
+including
+<a href="http://www.gnu.org/software/libc/">the
+<abbr title="GNU's Not Unix">GNU</abbr>
+C Library</a> (used in
+<a href="https://en.wikipedia.org/wiki/Linux"><abbr>GNU</abbr>/Linux</a>),
+<a href="https://www.android.com">Android</a>,
+<a href="https://developer.mozilla.org/en-US/docs/Mozilla/B2G_OS">B2G
+<abbr title="Operating System">OS</abbr></a>,
+<a href="https://www.freebsd.org">Free<abbr
+title="Berkeley Software Distribution">BSD</abbr></a>,
+<a href="http://netbsd.org">Net<abbr>BSD</abbr></a>,
+<a href="http://www.openbsd.org">Open<abbr>BSD</abbr></a>,
+<a href="http://www.chromium.org/chromium-os">Chromium OS</a>,
+<a href="https://cygwin.com">Cygwin</a>,
+<a href="http://www.delorie.com/djgpp/"><abbr
+title="DJ's GNU Programming Platform">DJGPP</abbr></a>,
+<a href="https://en.wikipedia.org/wiki/MINIX">MINIX</a>,
+<a href="https://en.wikipedia.org/wiki/WebOS"><abbr
+title="Web Operating System">webOS</abbr></a>,
+<a href="http://ibm.com/aix"><abbr
+title="Advanced Interactive eXecutive">AIX</abbr></a>,
+<a href="https://en.wikipedia.org/wiki/BlackBerry_10">BlackBerry 10</a>,
+<a href="http://www.apple.com/ios/"><abbr
+title="iPhone OS">iOS</abbr></a>,
+<a href="http://windows.microsoft.com">Microsoft Windows</a>,
+<a href="http://www.hp.com/go/openvms/">Open<abbr
+title="Virtual Memory System">VMS</abbr></a>,
+<a href="https://www.oracle.com/database/index.html">Oracle Database</a>,
+<a href="http://oracle.com/solaris">Oracle Solaris</a>, and
+<a href="http://www.apple.com/osx/"><abbr title="Operating System Ten">OS
+X</abbr></a>.</p>
+<p>
+Each location in the database represents a region where all
+clocks keeping local time have agreed since 1970.
+Locations are identified by continent or ocean and then by the name of
+the location, which is typically the largest city within the region.
+For example, <code>America/New_York</code>
+represents most of the <abbr title="United States">US</abbr> eastern time zone;
+<code>America/Phoenix</code> represents most of Arizona, which
+uses mountain time without daylight saving time (<abbr
+title="daylight saving time">DST</abbr>);
+<code>America/Detroit</code> represents most of Michigan, which uses
+eastern time but with different <abbr>DST</abbr> rules in 1975;
+and other entries represent smaller regions like Starke County,
+Indiana, which switched from central to eastern time in 1991
+and switched back in 2006.
+To use the database on an extended <a
+href="https://en.wikipedia.org/wiki/POSIX"><abbr
+title="Portable Operating System Interface">POSIX</abbr></a>
+implementation set the <code><abbr>TZ</abbr></code>
+environment variable to the location's full name,
+e.g., <code><abbr>TZ</abbr>="America/New_York"</code>.</p>
+<p>
+Associated with each region is a history of offsets from
+<a href="https://en.wikipedia.org/wiki/Universal_Time">Universal
+Time</a> (<abbr>UT</abbr>), which is <a
+href="https://en.wikipedia.org/wiki/Greenwich_Mean_Time">Greenwich Mean
+Time</a> (<abbr>GMT</abbr>) with days beginning at midnight;
+for time stamps after 1960 this is more precisely <a
+href="https://en.wikipedia.org/wiki/Coordinated_Universal_Time">Coordinated
+Universal Time</a> (<abbr>UTC</abbr>).
+The database also records when daylight saving time was in use,
+along with alphabetic time zone abbreviations such as <abbr>EST</abbr>
+for Eastern Standard Time in the <abbr>US</abbr>.</p>
+<p>
+In the <code><abbr>tz</abbr></code> database's
+<a href="ftp://ftp.iana.org/tz/releases/"><abbr
+title="File Transfer Protocol">FTP</abbr> releases</a>
+the code is in the file <code>tzcode<var>C</var>.tar.gz</code>,
+where <code><var>C</var></code> is the code's version;
+similarly, the data entries are in <code>tzdata<var>D</var>.tar.gz</code>,
+where <code><var>D</var></code> is the data's version.
+Since 1996, each version has been a four-digit year followed by
+lower-case letter (<samp>a</samp> through <samp>z</samp>,
+then <samp>za</samp> through <samp>zz</samp>, then <samp>zza</samp>
+through <samp>zzz</samp>, and so on).
+Convenience links to
+the <a href="ftp://ftp.iana.org/tz/tzcode-latest.tar.gz">latest
+code</a> and
+<a href="ftp://ftp.iana.org/tz/tzdata-latest.tar.gz">latest data</a> revisions
+are also available.
+The following <a
+href="https://en.wikipedia.org/wiki/Unix_shell">shell</a> commands download
+these files to a <abbr>GNU</abbr>/Linux or similar host;
+see the downloaded
+<code>README</code> file for what to do next.</p>
+<pre style="margin-left: 2em"><code>mkdir tz
+cd tz
+<a href="http://www.gnu.org/software/wget/">wget</a> --retr-symlinks 'ftp://ftp.iana.org/tz/tz*-latest.tar.gz'
+<a href="http://www.gnu.org/software/gzip/">gzip</a> -dc tzcode-latest.tar.gz | <a href="http://www.gnu.org/software/tar/">tar</a> -xf -
+gzip -dc tzdata-latest.tar.gz | tar -xf -
+</code></pre>
+<p>
+The code and data files can also be obtained from the
+<a href="http://www.iana.org/time-zones">Time Zone Database website</a>
+of the <a href="http://www.iana.org">Internet Assigned Numbers
+Authority (IANA)</a>.
+An <a href="https://github.com/eggert/tz">unofficial development
+repository</a> of the code and data is available
+in <a href="http://git-scm.com">Git</a> form
+from <a href="https://github.com">GitHub</a>; be careful, as this
+repository is less well tested and probably contains more errors.
+<p>
+The code lets you compile the <code><abbr>tz</abbr></code> source files into
+machine-readable binary files, one for each location. It also lets
+you read a <code><abbr>tz</abbr></code> binary file and interpret time stamps for that
+location.</p>
+<h2>Changes to the <code><abbr>tz</abbr></code> database</h2>
+<p>
+The <code><abbr>tz</abbr></code> code and data
+are by no means authoritative. If you find errors, please
+send changes to the <a href="mailto:tz at iana.org">time zone
+mailing list</a>. You can also <a
+href="http://news.gmane.org/gmane.comp.time.tz">browse recent
+messages</a> sent to the mailing list, <a
+href="https://mm.icann.org/mailman/listinfo/tz">subscribe</a> to it,
+and browse the <a
+href="http://mm.icann.org/pipermail/tz/">archive of old
+messages</a>.</p>
+<p>
+If your government plans to change its time zone boundaries or
+daylight saving rules, let the mailing list know well in advance. With
+less than a year's notice there is a good chance that some
+computer-based clocks will operate incorrectly after the change, due
+to delays in propagating updates to software and data. The shorter
+the notice, the more likely clock problems will arise.
+</p>
+<p>Sources for the <code><abbr>tz</abbr></code> database are
+<a href="https://en.wikipedia.org/wiki/UTF-8"><abbr
+title="Unicode Transformation Format 8-bit">UTF-8</abbr></a>
+<a href="https://en.wikipedia.org/wiki/Text_file">text files</a>
+with lines terminated by <a href="https://en.wikipedia.org/wiki/Newline"><abbr
+title="linefeed">LF</abbr></a>,
+which can be modified by common text editors such
+as <a href="https://www.gnu.org/software/emacs/">GNU Emacs</a>,
+<a href="https://wiki.gnome.org/Apps/Gedit">gedit</a>, and
+<a href="http://www.vim.org">vim</a>. One
+editor has a package to simplify editing further:</p>
+<ul>
+<li><a href="https://packagecontrol.io/packages/zoneinfo">Sublime
+zoneinfo</a> is a <a href="http://www.sublimetext.com">Sublime
+Text</a> package for syntax highlighting <code><abbr>tz</abbr></code>
+source files.</li>
+</ul>
+<p>
+For further information about updates, please see
+<a href="https://tools.ietf.org/html/rfc6557">Procedures for
+Maintaining the Time Zone Database</a> (Internet <abbr
+title="Request For Comments">RFC</abbr> 6557).</p>
+<h2>Commentary on the <code><abbr>tz</abbr></code> database</h2>
+<ul>
+<li>The article
+<a href="https://en.wikipedia.org/wiki/Tz_database">tz database</a> is
+an encyclopedic summary.</li>
+<li><a href="tz-how-to.html">How to Read the
+tz Database Source Files</a> explains the <code><abbr>tz</abbr></code>
+database format.</li>
+<li><a
+href="http://codeofmatt.com/2016/04/23/on-the-timing-of-time-zone-changes/">On
+the Timing of Time Zone Changes</a> gives examples of problems caused
+by inadequate notice by governments of time zone and daylight saving
+rule changes.</li>
+<li><a
+href="http://blog.jonudell.net/2009/10/23/a-literary-appreciation-of-the-olsonzoneinfotz-database/">A
+literary appreciation of the Olson/Zoneinfo/tz database</a> comments on the
+database's style.</li>
+</ul>
+<h2>Web sites using recent versions of the <code><abbr>tz</abbr></code> database</h2>
+<p>
+These are listed roughly in ascending order of complexity and fanciness.
+</p>
+<ul>
+<li><a href="http://time.is">Time.is</a> shows locations'
+time and zones in a simple format.</li>
+<li><a href="https://www.timejones.com">TimeJones.com</a> is a simple
+time zone converter.</li>
+<li><a
+href="http://twiki.org/cgi-bin/xtra/tzdatepick.html">Date and Time Gateway</a>
+lets you see the <code><abbr>TZ</abbr></code> values directly.</li>
+<li><a
+href="http://www.convertit.com/Go/ConvertIt/World_Time/Current_Time.ASP">Current
+Time in 1000 Places</a> uses descriptions of the values.</li>
+<li><a href="http://www.timezoneconverter.com/cgi-bin/tzc.tzc">Time Zone
+Converter</a>
+uses a pulldown menu.</li>
+<li><a href="http://home.kpn.nl/vanadovv/time/TZworld.html">Complete
+timezone information for all countries</a> displays tables of DST rules.
+<li><a href="http://www.timeanddate.com/worldclock/">The World Clock –
+Worldwide</a> lets you sort zone names and convert times.</li>
+<li><a href="http://www.zeitverschiebung.net/en/">Time Difference</a>
+calculates the current time difference between locations.</li>
+<li><a href="http://www.wx-now.com">Weather Now</a> lists the weather too.</li>
+<li><a href="http://www.thetimenow.com">The Time Now</a> also lists weather.</li>
+<li><a href="https://worldtime.io">worldtime.io</a>
+also contains data about time zone boundaries; it supports queries via place
+names and shows location maps.</li>
+</ul>
+<h2>Network protocols for <code><abbr>tz</abbr></code> data</h2>
+<ul>
+<li>The <a href="http://www.ietf.org">Internet Engineering Task Force</a>'s
+<a href="https://datatracker.ietf.org/wg/tzdist/charter/">Time Zone Data
+Distribution Service (tzdist) working group</a> defined <a
+href="https://tools.ietf.org/html/rfc7808">TZDIST</a>
+(Internet <abbr>RFC</abbr> 7808), a time zone data distribution service,
+along with a <a href="https://tools.ietf.org/html/rfc7809">calendar access
+protocol for transferring time zone data by reference</a>
+(Internet <abbr>RFC</abbr> 7809). This work was based
+on the iCalendar and CalConnect efforts described below.</li>
+<li>The <a href="https://tools.ietf.org/html/rfc5545">
+Internet Calendaring and Scheduling Core Object Specification
+(iCalendar)</a> (Internet <abbr>RFC</abbr> 5445)
+covers time zone
+data; see its VTIMEZONE calendar component.
+The iCalendar format requires specialized parsers and generators; a
+variant <a href="https://tools.ietf.org/html/rfc6321">xCal</a>
+(Internet <abbr>RFC</abbr> 6321) uses
+<a href="http://www.w3.org/XML/"><abbr
+title="Extensible Markup Language">XML</abbr></a> format, and a variant
+<a href="https://tools.ietf.org/html/rfc7265">jCal</a>
+(Internet <abbr>RFC</abbr> 7265)
+uses <a href="http://www.json.org"><abbr
+title="JavaScript Object Notation">JSON</abbr></a> format.
+<a href="https://www.calconnect.org">CalConnect, The Calendaring and Scheduling
+Consortium</a> is promoting further work in this area. <a
+href="http://calconnect.org/publications/icalendartimezoneproblemsandrecommendationsv1.0.pdf">iCalendar
+TIMEZONE Problems and Recommendations</a> offers guidelines and
+recommendations for the use of VTIMEZONE and <code><abbr>tz</abbr></code>.</li>
+<li>The <a
+href="http://calconnect.org/publications/timezoneregistryandservicerecommendationsv1.0.pdf">Timezone
+Registry and Service Recommendations</a> of CalConnect's
+<a href="https://www.calconnect.org/about/technical-committees/tc-timezone">TIMEZONE
+Technical Committee</a> discusses a
+strategy for defining and deploying a time zone
+registration process that would establish unique names for each
+version of each <code><abbr>tz</abbr></code> zone, along with a polygonal
+representation of the geographical area corresponding to the
+zone.</li>
+<li>The <a
+href="http://lists.w3.org/Archives/Public/www-rdf-calendar/">www-rdf-calendar</a>
+list discusses <a
+href="http://www.w3.org/RDF/"><abbr
+title="Resource Description Framework">RDF</abbr></a>-based calendar
+and group scheduling systems, and has a <a
+href="http://www.w3.org/2002/12/cal/#tzd">workspace on time zone
+data</a> converted from <code><abbr>tz</abbr></code>.</li>
+</ul>
+<h2>Other <code><abbr>tz</abbr></code> compilers</h2>
+<ul>
+<li><a href="https://sourceforge.net/projects/vzic/">Vzic</a> is a <a
+href="https://en.wikipedia.org/wiki/C_%28programming_language%29">C</a>
+program that compiles
+<code><abbr>tz</abbr></code> source into iCalendar-compatible VTIMEZONE files.
+Vzic is freely
+available under the <a
+href="http://www.gnu.org/copyleft/gpl.html"><abbr>GNU</abbr>
+General Public License (<abbr
+title="General Public License">GPL</abbr>)</a>.</li>
+<li><a href="https://sourceforge.net/projects/tzical/">tziCal – tz
+database conversion utility</a> is like Vzic, except for the <a
+href="https://www.microsoft.com/net">.NET framework</a>
+and with a <abbr>BSD</abbr>-style license.</li>
+<li><a
+href="http://search.cpan.org/dist/DateTime-TimeZone/">DateTime::TimeZone</a>
+contains a script <code>parse_olson</code> that compiles
+<code><abbr>tz</abbr></code> source into <a href="https://www.perl.org">Perl</a>
+modules. It is part of the Perl <a
+href="http://datetime.perl.org">DateTime Project</a>, which is freely
+available under both the <abbr>GPL</abbr> and the Perl Artistic
+License. DateTime::TimeZone also contains a script
+<code>tests_from_zdump</code> that generates test cases for each clock
+transition in the <code><abbr>tz</abbr></code> database.</li>
+<li>The <a href="https://howardhinnant.github.io/date/tz.html">Time Zone
+Database Parser</a> is a
+<a href="https://en.wikipedia.org/wiki/C%2B%2B">C++</a> parser and
+runtime library. It is freely available under the
+<a href="http://creativecommons.org/licenses/by/4.0/">Creative Commons
+Attribution 4.0 International Public License</a>.</li>
+<li><a href="http://site.icu-project.org">International Components for
+Unicode (<abbr>ICU</abbr>)</a> contains C/C++ and <a
+href="https://en.wikipedia.org/wiki/Java_%28programming_language%29">Java</a>
+libraries for internationalization that
+has a compiler from <code><abbr>tz</abbr></code> source
+and from <abbr title="Common Locale Data Repository">CLDR</abbr> data
+(mentioned below)
+into an <abbr>ICU</abbr>-specific format.
+<abbr>ICU</abbr> is freely available under a
+<abbr>BSD</abbr>-style license.</li>
+<li>The <a href="https://github.com/lau/tzdata">Tzdata</a> package for
+the <a href="http://elixir-lang.org">Elixir</a> language downloads
+and compiles tz source and exposes <abbr
+title="Application Program Interface">API</abbr>s for use. It is
+freely available under the <abbr
+title="Massachusetts Institute of Technology">MIT</abbr> license.</li>
+<li>The <a
+href="http://www.oracle.com/technetwork/java/javase/tzupdater-readme-136440.html">TZUpdater
+tool</a> compiles <code><abbr>tz</abbr></code> source into the format used by
+Oracle Java.</li>
+<li><a href="http://www.joda.org/joda-time/">Joda-Time – Java date
+and time <abbr>API</abbr></a> contains a class
+<code>org.joda.time.tz.ZoneInfoCompiler</code> that compiles
+<code><abbr>tz</abbr></code> source into a Joda-specific binary format. Joda Time
+is freely available under a <abbr>BSD</abbr>-style license.</li>
+<li><a href="http://nodatime.org">Noda Time – Date and
+time <abbr>API</abbr> for .NET</a>
+and <a href="http://www.babiej.demon.nl/Tz4Net/main.htm">TZ4Net</a>
+are similar to Joda Time, but for the .NET framework instead of
+Java. They are freely available under the
+<a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License</a>
+and a <abbr>BSD</abbr>-style license, respectively.</li>
+<li><a href="https://en.wikipedia.org/wiki/JavaScript">JavaScript</a>-based
+compilers and libraries include:
+<ul>
+<li><a href="http://momentjs.com/timezone/">Moment Timezone</a> is a
+plugin for the <a href="http://momentjs.com">Moment.js</a> date
+manipulation library. It is freely available under the <abbr>MIT</abbr>
+license.</li>
+<li><a href="https://github.com/mde/timezone-js">TimezoneJS.Date</a>'s
+<abbr>API</abbr> is upward compatible with standard JavaScript
+Dates. It is freely available under the Apache License.</li>
+<li><a href="https://github.com/sproutsocial/walltime-js">Walltime-js</a>
+translates <abbr>UT</abbr> to local time. It is freely available under
+the <abbr>MIT</abbr> license.</li>
+</ul>
+<li><a href="http://pytz.sourceforge.net">pytz – World Timezone
+Definitions for Python</a> compiles <code><abbr>tz</abbr></code> source into
+<a href="https://www.python.org">Python</a>.
+It is freely available under a <abbr>BSD</abbr>-style license.</li>
+<li><a href="http://tzinfo.github.io">TZInfo –
+Ruby Timezone Library</a>
+compiles <code><abbr>tz</abbr></code> source into
+<a href="https://www.ruby-lang.org/en/">Ruby</a>.
+It is freely available under the <abbr>MIT</abbr> license.</li>
+<li>The <a href="http://www.squeaksource.com/Chronos/">Chronos Date/Time
+Library</a> is
+a <a href="https://en.wikipedia.org/wiki/Smalltalk">Smalltalk</a> class
+library that compiles <code><abbr>tz</abbr></code> source into a time
+zone repository whose format
+is either proprietary or an <abbr>XML</abbr>-encoded
+representation.</li>
+<li><a href="http://tcl.tk">Tcl</a>
+contains a developer-oriented parser that compiles <code><abbr>tz</abbr></code>
+source into text files, along with a runtime that can read those
+files. Tcl is freely available under a <abbr>BSD</abbr>-style
+license.</li>
+</ul>
+<h2>Other <code><abbr>tz</abbr></code> binary file readers</h2>
+<ul>
+<li>The <a
+href="http://www.gnu.org/software/libc/"><abbr>GNU</abbr> C
+Library</a>
+has an independent, thread-safe implementation of
+a <code><abbr>tz</abbr></code> binary file reader.
+This library is freely available under the
+<a href="http://www.gnu.org/copyleft/lesser.html">
+<abbr>GNU</abbr> Lesser General Public License
+(<abbr title="Lesser General Public License">LGPL</abbr>)</a>,
+and is widely used in <abbr>GNU</abbr>/Linux systems.</li>
+<li><a href="https://www.gnome.org">GNOME</a>'s Glib has
+a <code><abbr>tz</abbr></code> binary file reader written in C that
+creates a <code>GTimeZone</code> object representing sets
+of <abbr>UT</abbr> offsets.
+It is freely available under the <abbr>LGPL</abbr>.</li>
+<li>The
+<a href="https://github.com/bloomberg/bde/wiki">BDE Standard Library</a>'s
+<code>baltzo::TimeZoneUtil</code> component contains a C++
+implementation of a binary file reader. It is freely available under
+the Apache License.</li>
+<li><a href="https://github.com/google/cctz">CCTZ</a> is a simple C++
+library that translates between UTC and civil time and can read binary
+files. It is freely available under the Apache License.</li>
+<li><a href="http://bmsi.com/java/#TZ">ZoneInfo.java</a>
+is a <code><abbr>tz</abbr></code> binary file reader written in Java.
+It is freely available under the <abbr>LGPL</abbr>.</li>
+<li><a href="https://github.com/bigeasy/timezone">Timezone</a> is a
+JavaScript library that supports date arithmetic that is time zone
+aware. It is freely available under the <abbr>MIT</abbr> license.</li>
+<li>Tcl, mentioned above, also contains a
+<code><abbr>tz</abbr></code> binary file reader.</li>
+<li><a href="http://search.cpan.org/perldoc?DateTime::TimeZone::Tzfile">
+DateTime::TimeZone::Tzfile</a>
+is a <code><abbr>tz</abbr></code> binary file reader written in Perl.
+It is freely available under the same terms as Perl
+(dual <abbr>GPL</abbr> and Artistic license).</li>
+<li>The
+public-domain <a href="https://github.com/dbaron/tz.js">tz.js</a>
+library contains a Python tool that
+converts <code><abbr>tz</abbr></code> binary data into
+<abbr>JSON</abbr>-format data suitable for use
+in its JavaScript library for time zone conversion. Dates before 1970
+are not supported.</li>
+<li>The <a
+href="http://hackage.haskell.org/package/timezone-olson">timezone-olson</a>
+package contains <a href="https://www.haskell.org">Haskell</a> code that
+parses and uses <code><abbr>tz</abbr></code> binary data. It is freely
+available under a <abbr>BSD</abbr>-style license.</li>
+</ul>
+<h2>Other <code><abbr>tz</abbr></code>-based time zone software</h2>
+<ul>
+<li><a href="https://foxclocks.org">FoxClocks</a>
+is an extension for <a href="https://www.google.com/chrome/">Google
+Chrome</a> and for <a
+href="https://developer.mozilla.org/en-US/docs/Mozilla/Tech/Toolkit_API">Mozilla
+Toolkit</a> applications like <a
+href="https://www.mozilla.org/en-US/firefox/new/">Firefox</a> and <a
+href="https://www.mozilla.org/en-US/thunderbird/">Thunderbird</a>.
+It displays multiple clocks in the application window, and has a mapping
+interface to <a href="https://www.google.com/earth/">Google Earth</a>.
+It is freely available under the <abbr>GPL</abbr>.</li>
+<li><a href="https://golang.org">Go programming language</a>
+implementations contain a copy of a 32-bit subset of a recent
+<code><abbr>tz</abbr></code> database in a
+Go-specific format.</li>
+<li><a
+href="http://users.skynet.be/Peter.Verthez/projects/intclock/">International
+clock (intclock)</a> is a clock that displays multiple time zones on
+<abbr>GNU</abbr>/Linux and similar systems. It is freely available
+under the <abbr>GPL</abbr>.</li>
+<li>Microsoft Windows 8.1
+and later has <code><abbr>tz</abbr></code> data and <abbr>CLDR</abbr>
+data (mentioned below) used by
+<a href="https://en.wikipedia.org/wiki/Windows_Runtime">Windows Runtime</a>
+classes such as <a
+href="https://msdn.microsoft.com/en-us/library/windows/apps/windows.globalization.datetimeformatting.datetimeformatter.aspx"><code>DateTimeFormatter</code></a>.
+<a
+href="https://blogs.msdn.microsoft.com/bclteam/2007/06/07/exploring-windows-time-zones-with-system-timezoneinfo-josh-free/">Exploring
+Windows Time Zones with <code>System.TimeZoneInfo</code></a> describes
+the older, proprietary method of Microsoft Windows 2000 and later,
+which stores time zone data in the
+<a href="https://en.wikipedia.org/wiki/Windows_Registry">Windows Registry</a>. The
+<a
+href="http://www.unicode.org/cldr/charts/latest/supplemental/zone_tzid.html">Zone →
+Tzid table</a> or <a
+href="http://unicode.org/repos/cldr/trunk/common/supplemental/windowsZones.xml"><abbr>XML</abbr>
+file</a> of the <abbr>CLDR</abbr> data maps proprietary zone IDs
+to <code><abbr>tz</abbr></code> names.
+<li><a
+href="https://www.oracle.com/java/index.html">Oracle
+Java</a> contains a copy of a subset of a recent
+<code><abbr>tz</abbr></code> database in a
+Java-specific format.</li>
+<li><a href="https://kimmo.suominen.com/sw/timezone/">Time Zone</a> is
+a <a href="https://wordpress.org">WordPress</a> plugin. It is freely
+available under a <abbr>BSD</abbr>-style license.</li>
+<li><a href="http://www.relativedata.com/time-zone-master">Time Zone
+Master</a> is a Microsoft Windows clock program that can automatically
+download, compile and use the <code>tzdata<var>D</var>.tar.gz</code>
+files as they are released. The Basic version is free.</li>
+<li><a
+href="http://veladg.com/velaterra.html">VelaTerra</a> is
+an <abbr>OS X</abbr> program. Its developers
+<a href="http://veladg.com/tzoffer.html">offer free
+licenses</a> to <code><abbr>tz</abbr></code> contributors.</li>
+</ul>
+<h2>Other time zone databases</h2>
+<ul>
+<li><a href="http://www.astro.com/atlas">Time-zone Atlas</a>
+is Astrodienst's Web version of Shanks and Pottenger's
+time zone history atlases published in both <a
+href="http://astrocom.com/astrology-products/software/acs-atlas-software">computer</a>
+and book form (<a
+href="http://www.astrocom.com/astrology/books/american-atlas">one volume
+for the <abbr>US</abbr></a>, and <a
+href="http://www.astrocom.com/astrology/books/international-atlas">one for
+other locations</a>) by <a
+href="http://astrocom.com">Astro Computing Services</a>.
+These atlases are extensive but unreliable, as Shanks appears to have
+guessed many <abbr>UT</abbr> offsets and transitions. The atlases cite no
+sources and do not indicate which entries are guesswork.</li>
+<li><a href="https://en.wikipedia.org/wiki/HP-UX">HP-UX</a> has a database in
+its own <code>tztab</code>(4) format.</li>
+<li>Microsoft Windows has proprietary data mentioned above.</li>
+<li><a href="http://www.worldtimeserver.com">World Time Server</a>
+is another time zone database.</li>
+<li><a href="http://tycho.usno.navy.mil/tzones.html">World Time Zones</a>
+contains data from the Time Service Department of the
+<abbr>US</abbr> Naval Observatory.</li>
+<li>The <a href="http://www.iata.org/publications/Pages/ssim.aspx">Standard
+Schedules Information Manual</a> of the
+International Air Transport Association
+gives current time zone rules for airports served by commercial aviation.</li>
+</ul>
+<h2>Maps</h2>
+<ul>
+<li>The <a href="https://www.cia.gov/index.html">United States Central
+Intelligence Agency (<abbr
+title="Central Intelligence Agency">CIA</abbr>)</a> publishes a <a
+href="https://www.cia.gov/library/publications/the-world-factbook/graphics/ref_maps/physical/pdf/standard_time_zones_of_the_world.pdf">time
+zone map</a>; the
+<a
+href="http://www.lib.utexas.edu/maps/world.html">Perry–Castañeda
+Library Map Collection</a>
+of the University of Texas at Austin has copies of
+recent editions.
+The pictorial quality is good,
+but the maps do not indicate summer time,
+and parts of the data are a few years out of date.</li>
+<li><a href="http://www.worldtimezone.com">Current time around the world
+and standard time zones map of the world</a>
+has several fancy time zone maps; it covers Russia particularly well.
+The maps' pictorial quality is not quite as good as the
+<abbr>CIA</abbr>'s
+but the maps are more up to date.</li>
+<li><a
+href="http://blog.poormansmath.net/how-much-is-time-wrong-around-the-world/">How
+much is time wrong around the world?</a> maps the difference between
+mean solar and standard time, highlighting areas such as western China
+where the two differ greatly. It's a bit out of date, unfortunately.</li>
+</ul>
+<h2>Time zone boundaries</h2>
+<ul>
+<li><a href="http://efele.net/maps/tz/"><abbr>TZ</abbr> timezones
+maps</a> contains <a
+href="https://en.wikipedia.org/wiki/Shapefile">shapefiles</a> of
+sets of <code><abbr>tz</abbr></code> regions.</li>
+<li>The <a href="https://github.com/bradfitz/latlong">latlong package</a>
+maps geographical coordinates to a <code><abbr>tz</abbr></code> region.
+It is written in Go and is freely available under the Apache License.</li>
+<li><a href="https://derickrethans.nl/what-time-is-it.html">What Time
+is It Here?</a> applies <a href="https://www.mongodb.com">MongoDB</a>
+geospatial query operators to shapefiles' data.</li>
+<li><a href="http://statoids.com/statoids.html">Administrative
+Divisions of Countries ("Statoids")</a> contains lists of
+political subdivision data related to time zones.</li>
+<li><a href="http://home.kpn.nl/vanadovv/time/Multizones.html">Time
+zone boundaries for multizone countries</a> summarizes legal
+boundaries between time zones within countries.</li>
+<li>Manifold.net's <a
+href="http://manifold.net/info/freestuff.shtml">Free Stuff for
+Manifold System Users</a> includes a Manifold-format map of
+world time zone boundaries distributed under the
+<abbr>GPL</abbr>.</li>
+<li>The GeoCommunity lists several commercial sources for <a
+href="http://spatialnews.geocomm.com/features/timezones/">International
+Time Zones and Time Zone Data</a>.</li>
+<li>A ship within the <a
+href="https://en.wikipedia.org/wiki/Territorial_waters">territorial
+waters</a> of any nation uses that nation's time. In international
+waters, time zone boundaries are meridians 15° apart, except that
+<abbr>UTC</abbr>−12 and <abbr>UTC</abbr>+12 are each 7.5°
+wide and are separated by
+the 180° meridian (not by the International Date Line, which is
+for land and territorial waters only). A captain can change ship's
+clocks any time after entering a new time zone; midnight changes are
+common.</li>
+</ul>
+<h2>Civil time concepts and history</h2>
+<ul>
+<li><a href="http://www.nist.gov/pml/general/time/index.cfm">A
+Walk through Time</a>
+surveys the evolution of timekeeping.</li>
+<li><a href="http://www.webexhibits.org/daylightsaving/">About Daylight
+Saving Time – History, rationale, laws & dates</a>
+is an overall history of <abbr>DST</abbr>.</li>
+<li><a href="https://www.w3.org/TR/timezone/">Working with Time Zones</a>
+contains guidelines and best practices for software applications that
+deal with civil time.</li>
+<li><a href="http://energy.ca.gov/daylightsaving.html">Saving Time,
+Saving Energy</a> discusses a primary justification for <abbr>DST</abbr>.</li>
+<li><a href="http://seizethedaylight.com/dst/">A Brief
+History of Daylight Saving Time</a> summarizes some of the contentious
+history of <abbr>DST</abbr>.</li>
+<li><a href="http://www.staff.science.uu.nl/~gent0113/idl/idl.htm">A History of
+the International Date Line</a> tells the story of the most important
+time zone boundary.</li>
+<li><a href="http://statoids.com/tconcept.html">Basic Time
+Zone Concepts</a> discusses terminological issues behind time zones.</li>
+</ul>
+<h2>National histories of legal time</h2>
+<dl>
+<dt>Australia</dt>
+<dd>The Parliamentary Library has commissioned a <a
+href="http://www.aph.gov.au/binaries/library/pubs/rp/2009-10/10rp10.pdf">research
+paper on daylight saving time in Australia</a>.
+The Bureau of Meteorology publishes a list of <a
+href="http://www.bom.gov.au/climate/averages/tables/dst_times.shtml">Implementation
+Dates of Daylight Savings Time within Australia</a>.</dd>
+<dt>Belgium</dt>
+<dd>The Royal Observatory of Belgium maintains a table of <a
+href="http://www.astro.oma.be/GENERAL/INFO/nli001a.html"
+hreflang="nl">time in Belgium (in Dutch)</a>.</dd>
+<dt>Brazil</dt>
+<dd>The Time Service Department of the National Observatory
+records <a href="http://pcdsh01.on.br/DecHV.html"
+hreflang="pt-BR">Brazil's daylight saving time decrees (in
+Portuguese)</a>.</dd>
+<dt>Canada</dt>
+<dd>National Research Council Canada publishes current
+and some older information about <a
+href="http://www.nrc-cnrc.gc.ca/eng/services/time/time_zones.html">time
+zones & daylight saving time</a>.</dd>
+<dt>Chile</dt>
+<dd>The Hydrographic and Oceanographic Service of the Chilean Navy publishes a
+<a href="http://www.horaoficial.cl/historia_hora.html" hreflang="es">history of
+Chile's official time (in Spanish)</a>.</dd>
+<dt>Germany</dt>
+<dd>The National Institute for Science and Technology maintains the <a
+href="http://www.ptb.de/cms/en/fachabteilungen/abt4/fb-44/ag-441/realisation-of-legal-time-in-germany.html">Realisation
+of Legal Time in Germany</a>.</dd>
+<dt>Israel</dt>
+<dd>The Interior Ministry periodically issues <a
+href="ftp://ftp.cs.huji.ac.il/pub/tz/announcements"
+hreflang="he">announcements (in Hebrew)</a>.</dd>
+<dt>Mexico</dt>
+<dd>The Investigation and Analysis Service of the Mexican Library of
+Congress has published a <a
+href="http://www.diputados.gob.mx/bibliot/publica/inveyana/polisoc/horver/index.htm"
+hreflang="es">history of Mexican local time (in Spanish)</a>.</dd>
+<dt>Malaysia</dt>
+<dd>See Singapore below.</dd>
+<dt>Netherlands</dt>
+<dd><a href="http://www.staff.science.uu.nl/~gent0113/wettijd/wettijd.htm"
+hreflang="nl">Legal time in the Netherlands (in Dutch)</a>
+covers the history of local time in the Netherlands from ancient times.</dd>
+<dt>New Zealand</dt>
+<dd>The Department of Internal Affairs maintains a brief <a
+href="http://www.dia.govt.nz/Daylight-Saving-History">History of
+Daylight Saving</a>. The privately-maintained <a
+href="http://astrologyschool.com/nztime.html">History of New Zealand
+time</a> has more details.</dd>
+<dt>Singapore</dt>
+<dd><a
+href="http://www.math.nus.edu.sg/aslaksen/teaching/timezone.html">Why
+is Singapore in the "Wrong" Time Zone?</a> details the
+history of legal time in Singapore and Malaysia.</dd>
+<dt>United Kingdom</dt>
+<dd><a
+href="https://www.polyomino.org.uk/british-time/">History of
+legal time in Britain</a> discusses in detail the country
+with perhaps the best-documented history of clock adjustments.
+The National Physical Laboratory also maintains an <a
+href="http://www.npl.co.uk/educate-explore/what-is-time/archive-of-summer-time-dates-1916-2006">Archive
+of Summer time dates</a>.</dd>
+<dt>United States</dt>
+<dd>The Department of Transportation's <a
+href="https://www.transportation.gov/regulations/recent-time-zone-proceedings">Recent
+Time Zone Proceedings</a> lists changes to time zone boundaries.</dd>
+</dl>
+<h2>Precision timekeeping</h2>
+<ul>
+<li><a
+href="http://literature.agilent.com/litweb/pdf/5965-7984E.pdf">The
+Science of Timekeeping</a> is a thorough introduction
+to the theory and practice of precision timekeeping.</li>
+<li><a href="http://www.ntp.org"><abbr
+title="Network Time Protocol">NTP</abbr>: The Network
+Time Protocol</a>
+discusses how to synchronize clocks of
+Internet hosts.</li>
+<li>The <a href="http://www.nist.gov/el/isd/ieee/ieee1588.cfm">Precision
+Time Protocol</a> (<abbr
+title="Institute of Electrical and Electronics Engineers">IEEE</abbr> 1588)
+can achieve submicrosecond clock accuracy on a local area network.</li>
+<li><a
+href="https://tools.ietf.org/html/rfc4833">Timezone
+Options for <abbr title="Dynamic Host Configuration Protocol">DHCP</abbr></a>
+(Internet <abbr>RFC</abbr> 4833)
+specifies a <a
+href="https://en.wikipedia.org/wiki/Dynamic_Host_Configuration_Protocol"><abbr>DHCP</abbr></a>
+option for a server to configure
+a client's time zone and daylight saving settings automatically.</li>
+<li><a href="http://gauss.gge.unb.ca/GMT.UT.and.the.RGO.html">A Few Facts
+Concerning <abbr>GMT</abbr>, <abbr>UT</abbr>, and
+the <abbr title="Royal Greenwich Observatory">RGO</abbr></a>
+answers questions like "What is the
+difference between <abbr>GMT</abbr> and <abbr>UTC</abbr>?"</li>
+<li><a
+href="http://www.cv.nrao.edu/~rfisher/Ephemerides/times.html">Astronomical
+Times</a> explains more abstruse astronomical time scales like
+<abbr title="Terrestrial Dynamic Time">TDT</abbr>,
+<abbr title="Geocentric Coordinate Time">TCG</abbr>, and
+<abbr title="Barycentric Dynamic Time">TDB</abbr>.
+<a href="http://www.ucolick.org/~sla/leapsecs/timescales.html">Time
+Scales</a> goes into more detail, particularly for historical variants.</li>
+<li>The <a href="http://iau.org"><abbr
+title="International Astronomical Union">IAU</abbr></a>'s <a
+href="http://www.iausofa.org"><abbr
+title="Standards Of Fundamental Astronomy">SOFA</abbr></a>
+collection contains C and <a
+href="https://en.wikipedia.org/wiki/Fortran">Fortran</a>
+code for converting among time scales like
+<abbr title="International Atomic Time">TAI</abbr>,
+<abbr>TDB</abbr>, <abbr>TDT</abbr> and
+<abbr>UTC</abbr>.</li>
+<li><a href="http://solarsystem.nasa.gov/basics/bsf2-3.php">Basics of
+Space Flight – Reference Systems – Time Conventions</a>
+briefly explains interplanetary space flight timekeeping.</li>
+<li><a
+href="http://www.giss.nasa.gov/tools/mars24/help/notes.html">Technical
+Notes on Mars Solar Time as Adopted by the Mars24 Sunclock</a> briefly
+describes Mars Coordinated Time (<abbr
+title="Mars Coordinated Time">MTC</abbr>) and the
+diverse local time
+scales used by each landed mission on Mars.</li>
+<li><a href="http://leapsecond.com">LeapSecond.com</a> is
+dedicated not only to leap seconds but to precise time and frequency
+in general. It covers the state of the art in amateur timekeeping, and
+how the art has progressed over the past few decades.</li>
+<li><a
+href="https://www.iers.org/IERS/EN/Publications/Bulletins/bulletins.html"><abbr
+title="International Earth Rotation and Reference Systems Service">IERS</abbr>
+Bulletins</a> contains official publications of the International
+Earth Rotation and Reference Systems Service, which decides
+when leap seconds occur.</li>
+<li>The <a
+href="https://pairlist6.pair.net/mailman/listinfo/leapsecs">Leap
+Second Discussion List</a> covers <a
+href="http://gauss.gge.unb.ca/papers.pdf/gpsworld.november99.pdf">McCarthy
+and Klepczynski's proposal to discontinue leap seconds</a>,
+discussed further in
+<a href="http://www.cl.cam.ac.uk/~mgk25/time/metrologia-leapsecond.pdf">The
+leap second: its history and possible future</a>.
+<a href="http://www.ucolick.org/~sla/leapsecs/"><abbr>UTC</abbr>
+might be redefined
+without Leap Seconds</a> gives pointers on this
+contentious issue.</li>
+</ul>
+<h2>Time notation</h2>
+<ul>
+<li>The <a href="http://cldr.unicode.org">Unicode Common Locale Data
+Repository (<abbr>CLDR</abbr>) Project</a> has localizations for time
+zone names, abbreviations, identifiers, and formats. For example, it
+contains French translations for "Eastern European Summer Time",
+"<abbr title="Eastern European Summer Time">EEST</abbr>", and
+"Bucharest". Its
+<a href="http://unicode.org/cldr/charts/by_type/index.html">by-type
+charts</a> show these values for many locales. Data values are available in
+both <abbr title="Locale Data Markup Language">LDML</abbr>
+(an <abbr>XML</abbr> format) and <abbr>JSON</abbr>.
+<li>
+<a href="http://www.cl.cam.ac.uk/~mgk25/iso-time.html">A summary of
+the international standard date and time notation</a> is a good
+summary of
+<a
+href="http://www.iso.org/iso/catalogue_detail?csnumber=40874"><abbr
+title="International Organization for Standardization">ISO</abbr>
+8601:2004 – Data elements and interchange formats – Information
+interchange – Representation of dates and times</a>.</li>
+<li>
+<a href="https://www.w3.org/TR/xmlschema-2/#dateTime"><abbr>XML</abbr>
+Schema: Datatypes – dateTime</a> specifies a format inspired by
+<abbr>ISO</abbr> 8601 that is in common use in <abbr>XML</abbr> data.</li>
+<li>
+<a href="https://tools.ietf.org/html/rfc5322">Internet
+Message Format</a> (Internet <abbr>RFC</abbr> 5322) §3.3
+specifies the time notation used in email and <a
+href="https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol"><abbr>HTTP</abbr></a>
+headers.</li>
+<li>
+<a href="https://tools.ietf.org/html/rfc3339">Date and Time
+on the Internet: Timestamps</a> (Internet <abbr>RFC</abbr> 3339)
+specifies an <abbr>ISO</abbr> 8601
+profile for use in new Internet
+protocols.</li>
+<li>
+<a href="https://www.hackcraft.net/web/datetime/">Date & Time
+Formats on the Web</a> surveys web- and Internet-oriented date and time
+formats.</li>
+<li>
+<a href="http://exit109.com/~ghealton/y2k/yrexamples.html">The
+Best of Dates, the Worst of Dates</a> covers many problems encountered
+by software developers when handling dates and time stamps.</li>
+<li>Alphabetic time zone abbreviations should not be used as unique
+identifiers for <abbr>UTC</abbr> offsets as they are ambiguous in
+practice. For example, in English-speaking North America
+"<abbr>CST</abbr>" denotes 6 hours behind <abbr>UTC</abbr>,
+but in China it denotes 8 hours ahead of <abbr>UTC</abbr>,
+and French-speaking North Americans prefer
+"<abbr title="Heure Normale du Centre">HNC</abbr>" to
+"<abbr>CST</abbr>". For <abbr>POSIX</abbr> the <code><abbr>tz</abbr></code>
+database contains English abbreviations for all time stamps but in
+many cases these are merely inventions of the database
+maintainers.</li>
+<li>Numeric time zone abbreviations typically count hours east of
+<abbr>UTC</abbr>, e.g., +09 for Japan and
+−10 for Hawaii. However, the <abbr>POSIX</abbr>
+<code><abbr>TZ</abbr></code> environment variable uses the opposite convention.
+For example, one might use <code><abbr>TZ</abbr>="<abbr
+title="Japan Standard Time">JST</abbr>-9"</code> and
+<code><abbr>TZ</abbr>="<abbr title="Hawaii Standard Time">HST</abbr>10"</code>
+for Japan and Hawaii, respectively. If the
+<code><abbr>tz</abbr></code> database is available, it is usually better to use
+settings like <code><abbr>TZ</abbr>="Asia/Tokyo"</code> and
+<code><abbr>TZ</abbr>="Pacific/Honolulu"</code> instead, as this should avoid
+confusion, handle old time stamps better, and insulate you better from
+any future changes to the rules. One should never set
+<abbr>POSIX</abbr> <code><abbr>TZ</abbr></code> to a value like
+<code>"GMT-9"</code>, though, since this would falsely claim that
+local time is nine hours ahead of <abbr>UTC</abbr> and the time zone
+is called "<abbr>GMT</abbr>".</li>
+</ul>
+<h2>See also</h2>
+<ul>
+<li><a href="tz-art.htm">Time and the Arts</a></li>
+</ul>
+<hr>
+<address>
+This web page is in the public domain, so clarified as of
+2009-05-17 by Arthur David Olson.
+<br>
+Please send corrections to this web page to the
+<a href="mailto:tz at iana.org">time zone mailing list</a>.
+</address>
+</body>
+</html>
Deleted: vendor/tzcode/2016f/tzfile.5
===================================================================
--- vendor/tzcode/dist/tzfile.5 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzfile.5 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,151 +0,0 @@
-.TH TZFILE 5
-.SH NAME
-tzfile \- time zone information
-.SH SYNOPSIS
-.B
-#include <tzfile.h>
-.SH DESCRIPTION
-The time zone information files used by
-.IR tzset (3)
-begin with the magic characters "TZif" to identify them as
-time zone information files,
-followed by a character identifying the version of the file's format
-(as of 2005, either an ASCII NUL or a '2')
-followed by fifteen bytes containing zeroes reserved for future use,
-followed by six four-byte values of type
-.BR long ,
-written in a ``standard'' byte order
-(the high-order byte of the value is written first).
-These values are,
-in order:
-.TP
-.I tzh_ttisgmtcnt
-The number of UTC/local indicators stored in the file.
-.TP
-.I tzh_ttisstdcnt
-The number of standard/wall indicators stored in the file.
-.TP
-.I tzh_leapcnt
-The number of leap seconds for which data is stored in the file.
-.TP
-.I tzh_timecnt
-The number of "transition times" for which data is stored
-in the file.
-.TP
-.I tzh_typecnt
-The number of "local time types" for which data is stored
-in the file (must not be zero).
-.TP
-.I tzh_charcnt
-The number of characters of "time zone abbreviation strings"
-stored in the file.
-.PP
-The above header is followed by
-.I tzh_timecnt
-four-byte values of type
-.BR long ,
-sorted in ascending order.
-These values are written in ``standard'' byte order.
-Each is used as a transition time (as returned by
-.IR time (2))
-at which the rules for computing local time change.
-Next come
-.I tzh_timecnt
-one-byte values of type
-.BR "unsigned char" ;
-each one tells which of the different types of ``local time'' types
-described in the file is associated with the same-indexed transition time.
-These values serve as indices into an array of
-.I ttinfo
-structures (with
-.I tzh_typecnt
-entries) that appears next in the file;
-these structures are defined as follows:
-.in +.5i
-.sp
-.nf
-.ta .5i +\w'unsigned int\0\0'u
-struct ttinfo {
- long tt_gmtoff;
- int tt_isdst;
- unsigned int tt_abbrind;
-};
-.in -.5i
-.fi
-.sp
-Each structure is written as a four-byte value for
-.I tt_gmtoff
-of type
-.BR long ,
-in a standard byte order, followed by a one-byte value for
-.I tt_isdst
-and a one-byte value for
-.IR tt_abbrind .
-In each structure,
-.I tt_gmtoff
-gives the number of seconds to be added to UTC,
-.I tt_isdst
-tells whether
-.I tm_isdst
-should be set by
-.I localtime (3)
-and
-.I tt_abbrind
-serves as an index into the array of time zone abbreviation characters
-that follow the
-.I ttinfo
-structure(s) in the file.
-.PP
-Then there are
-.I tzh_leapcnt
-pairs of four-byte values, written in standard byte order;
-the first value of each pair gives the time
-(as returned by
-.IR time(2))
-at which a leap second occurs;
-the second gives the
-.I total
-number of leap seconds to be applied after the given time.
-The pairs of values are sorted in ascending order by time.
-.PP
-Then there are
-.I tzh_ttisstdcnt
-standard/wall indicators, each stored as a one-byte value;
-they tell whether the transition times associated with local time types
-were specified as standard time or wall clock time,
-and are used when a time zone file is used in handling POSIX-style
-time zone environment variables.
-.PP
-Finally there are
-.I tzh_ttisgmtcnt
-UTC/local indicators, each stored as a one-byte value;
-they tell whether the transition times associated with local time types
-were specified as UTC or local time,
-and are used when a time zone file is used in handling POSIX-style
-time zone environment variables.
-.PP
-.I Localtime
-uses the first standard-time
-.I ttinfo
-structure in the file
-(or simply the first
-.I ttinfo
-structure in the absence of a standard-time structure)
-if either
-.I tzh_timecnt
-is zero or the time argument is less than the first transition time recorded
-in the file.
-.PP
-For version-2-format time zone files,
-the above header and data are followed by a second header and data,
-identical in format except that
-eight bytes are used for each transition time or leap second time.
-After the second header and data comes a newline-enclosed,
-POSIX-TZ-environment-variable-style string for use in handling instants
-after the last transition time stored in the file
-(with nothing between the newlines if there is no POSIX representation for
-such instants).
-.SH SEE ALSO
-newctime(3)
-.\" This file is in the public domain, so clarified as of
-.\" 1996-06-05 by Arthur David Olson.
Copied: vendor/tzcode/2016f/tzfile.5 (from rev 7736, vendor/tzcode/dist/tzfile.5)
===================================================================
--- vendor/tzcode/2016f/tzfile.5 (rev 0)
+++ vendor/tzcode/2016f/tzfile.5 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,155 @@
+.TH TZFILE 5
+.SH NAME
+tzfile \- time zone information
+.SH DESCRIPTION
+The time zone information files used by
+.IR tzset (3)
+begin with the magic characters "TZif" to identify them as
+time zone information files,
+followed by a character identifying the version of the file's format
+(as of 2013, either an ASCII NUL, or '2', or '3')
+followed by fifteen bytes containing zeroes reserved for future use,
+followed by six four-byte integer values
+written in a standard byte order
+(the high-order byte of the value is written first).
+These values are,
+in order:
+.TP
+.I tzh_ttisgmtcnt
+The number of UT/local indicators stored in the file.
+.TP
+.I tzh_ttisstdcnt
+The number of standard/wall indicators stored in the file.
+.TP
+.I tzh_leapcnt
+The number of leap seconds for which data entries are stored in the file.
+.TP
+.I tzh_timecnt
+The number of transition times for which data entries are stored
+in the file.
+.TP
+.I tzh_typecnt
+The number of local time types for which data entries are stored
+in the file (must not be zero).
+.TP
+.I tzh_charcnt
+The number of characters of time zone abbreviation strings
+stored in the file.
+.PP
+The above header is followed by
+.I tzh_timecnt
+four-byte signed integer values sorted in ascending order.
+These values are written in standard byte order.
+Each is used as a transition time (as returned by
+.IR time (2))
+at which the rules for computing local time change.
+Next come
+.I tzh_timecnt
+one-byte unsigned integer values;
+each one tells which of the different types of local time types
+described in the file is associated with the time period
+starting with the same-indexed transition time.
+These values serve as indices into an array of
+.I ttinfo
+structures (with
+.I tzh_typecnt
+entries) that appears next in the file;
+these structures are defined as follows:
+.in +.5i
+.sp
+.nf
+.ta .5i +\w'unsigned char\0\0'u
+struct ttinfo {
+ int32_t tt_gmtoff;
+ unsigned char tt_isdst;
+ unsigned char tt_abbrind;
+};
+.in -.5i
+.fi
+.sp
+Each structure is written as a four-byte signed integer value for
+.IR tt_gmtoff ,
+in a standard byte order, followed by a one-byte value for
+.I tt_isdst
+and a one-byte value for
+.IR tt_abbrind .
+In each structure,
+.I tt_gmtoff
+gives the number of seconds to be added to UT,
+.I tt_isdst
+tells whether
+.I tm_isdst
+should be set by
+.I localtime (3)
+and
+.I tt_abbrind
+serves as an index into the array of time zone abbreviation characters
+that follow the
+.I ttinfo
+structure(s) in the file.
+.PP
+Then there are
+.I tzh_leapcnt
+pairs of four-byte values, written in standard byte order;
+the first value of each pair gives the time
+(as returned by
+.IR time(2))
+at which a leap second occurs;
+the second gives the
+.I total
+number of leap seconds to be applied during the time period
+starting at the given time.
+The pairs of values are sorted in ascending order by time.
+.PP
+Then there are
+.I tzh_ttisstdcnt
+standard/wall indicators, each stored as a one-byte value;
+they tell whether the transition times associated with local time types
+were specified as standard time or wall clock time,
+and are used when a time zone file is used in handling POSIX-style
+time zone environment variables.
+.PP
+Finally there are
+.I tzh_ttisgmtcnt
+UT/local indicators, each stored as a one-byte value;
+they tell whether the transition times associated with local time types
+were specified as UT or local time,
+and are used when a time zone file is used in handling POSIX-style
+time zone environment variables.
+.PP
+.I Localtime
+uses the first standard-time
+.I ttinfo
+structure in the file
+(or simply the first
+.I ttinfo
+structure in the absence of a standard-time structure)
+if either
+.I tzh_timecnt
+is zero or the time argument is less than the first transition time recorded
+in the file.
+.PP
+For version-2-format time zone files,
+the above header and data are followed by a second header and data,
+identical in format except that
+eight bytes are used for each transition time or leap second time.
+After the second header and data comes a newline-enclosed,
+POSIX-TZ-environment-variable-style string for use in handling instants
+after the last transition time stored in the file
+(with nothing between the newlines if there is no POSIX representation for
+such instants).
+.PP
+For version-3-format time zone files, the POSIX-TZ-style string may
+use two minor extensions to the POSIX TZ format, as described in
+.IR newtzset (3).
+First, the hours part of its transition times may be signed and range from
+\-167 through 167 instead of the POSIX-required unsigned values
+from 0 through 24. Second, DST is in effect all year if it starts
+January 1 at 00:00 and ends December 31 at 24:00 plus the difference
+between daylight saving and standard time.
+.PP
+Future changes to the format may append more data.
+.SH SEE ALSO
+newctime(3), newtzset(3), zdump(8), zic(8)
+.\" This file is in the public domain, so clarified as of
+.\" 1996-06-05 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/tzfile.5.txt
===================================================================
--- vendor/tzcode/dist/tzfile.5.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzfile.5.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,98 +0,0 @@
-TZFILE(5) TZFILE(5)
-
-NAME
- tzfile - time zone information
-
-SYNOPSIS
- #include <tzfile.h>
-
-DESCRIPTION
- The time zone information files used by tzset(3) begin with the magic
- characters "TZif" to identify them as time zone information files,
- followed by a character identifying the version of the file's format
- (as of 2005, either an ASCII NUL or a '2') followed by fifteen bytes
- containing zeroes reserved for future use, followed by six four-byte
- values of type long, written in a ``standard'' byte order (the high-
- order byte of the value is written first). These values are, in order:
-
- tzh_ttisgmtcnt
- The number of UTC/local indicators stored in the file.
-
- tzh_ttisstdcnt
- The number of standard/wall indicators stored in the file.
-
- tzh_leapcnt
- The number of leap seconds for which data is stored in the file.
-
- tzh_timecnt
- The number of "transition times" for which data is stored in the
- file.
-
- tzh_typecnt
- The number of "local time types" for which data is stored in the
- file (must not be zero).
-
- tzh_charcnt
- The number of characters of "time zone abbreviation strings"
- stored in the file.
-
- The above header is followed by tzh_timecnt four-byte values of type
- long, sorted in ascending order. These values are written in
- ``standard'' byte order. Each is used as a transition time (as
- returned by time(2)) at which the rules for computing local time
- change. Next come tzh_timecnt one-byte values of type unsigned char;
- each one tells which of the different types of ``local time'' types
- described in the file is associated with the same-indexed transition
- time. These values serve as indices into an array of ttinfo structures
- (with tzh_typecnt entries) that appears next in the file; these
- structures are defined as follows:
-
- struct ttinfo {
- long tt_gmtoff;
- int tt_isdst;
- unsigned int tt_abbrind;
- };
-
- Each structure is written as a four-byte value for tt_gmtoff of type
- long, in a standard byte order, followed by a one-byte value for
- tt_isdst and a one-byte value for tt_abbrind. In each structure,
- tt_gmtoff gives the number of seconds to be added to UTC, tt_isdst
- tells whether tm_isdst should be set by localtime (3) and tt_abbrind
- serves as an index into the array of time zone abbreviation characters
- that follow the ttinfo structure(s) in the file.
-
- Then there are tzh_leapcnt pairs of four-byte values, written in
- standard byte order; the first value of each pair gives the time (as
- returned by time(2)) at which a leap second occurs; the second gives
- the total number of leap seconds to be applied after the given time.
- The pairs of values are sorted in ascending order by time.
-
- Then there are tzh_ttisstdcnt standard/wall indicators, each stored as
- a one-byte value; they tell whether the transition times associated
- with local time types were specified as standard time or wall clock
- time, and are used when a time zone file is used in handling POSIX-
- style time zone environment variables.
-
- Finally there are tzh_ttisgmtcnt UTC/local indicators, each stored as a
- one-byte value; they tell whether the transition times associated with
- local time types were specified as UTC or local time, and are used when
- a time zone file is used in handling POSIX-style time zone environment
- variables.
-
- Localtime uses the first standard-time ttinfo structure in the file (or
- simply the first ttinfo structure in the absence of a standard-time
- structure) if either tzh_timecnt is zero or the time argument is less
- than the first transition time recorded in the file.
-
- For version-2-format time zone files, the above header and data are
- followed by a second header and data, identical in format except that
- eight bytes are used for each transition time or leap second time.
- After the second header and data comes a newline-enclosed, POSIX-TZ-
- environment-variable-style string for use in handling instants after
- the last transition time stored in the file (with nothing between the
- newlines if there is no POSIX representation for such instants).
-
-SEE ALSO
- newctime(3)
-
- TZFILE(5)
Copied: vendor/tzcode/2016f/tzfile.5.txt (from rev 7736, vendor/tzcode/dist/tzfile.5.txt)
===================================================================
--- vendor/tzcode/2016f/tzfile.5.txt (rev 0)
+++ vendor/tzcode/2016f/tzfile.5.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,107 @@
+TZFILE(5) File Formats Manual TZFILE(5)
+
+NAME
+ tzfile - time zone information
+
+DESCRIPTION
+ The time zone information files used by tzset(3) begin with the magic
+ characters "TZif" to identify them as time zone information files,
+ followed by a character identifying the version of the file's format
+ (as of 2013, either an ASCII NUL, or '2', or '3') followed by fifteen
+ bytes containing zeroes reserved for future use, followed by six four-
+ byte integer values written in a standard byte order (the high-order
+ byte of the value is written first). These values are, in order:
+
+ tzh_ttisgmtcnt
+ The number of UT/local indicators stored in the file.
+
+ tzh_ttisstdcnt
+ The number of standard/wall indicators stored in the file.
+
+ tzh_leapcnt
+ The number of leap seconds for which data entries are stored in
+ the file.
+
+ tzh_timecnt
+ The number of transition times for which data entries are stored
+ in the file.
+
+ tzh_typecnt
+ The number of local time types for which data entries are stored
+ in the file (must not be zero).
+
+ tzh_charcnt
+ The number of characters of time zone abbreviation strings
+ stored in the file.
+
+ The above header is followed by tzh_timecnt four-byte signed integer
+ values sorted in ascending order. These values are written in standard
+ byte order. Each is used as a transition time (as returned by time(2))
+ at which the rules for computing local time change. Next come
+ tzh_timecnt one-byte unsigned integer values; each one tells which of
+ the different types of local time types described in the file is
+ associated with the time period starting with the same-indexed
+ transition time. These values serve as indices into an array of ttinfo
+ structures (with tzh_typecnt entries) that appears next in the file;
+ these structures are defined as follows:
+
+ struct ttinfo {
+ int32_t tt_gmtoff;
+ unsigned char tt_isdst;
+ unsigned char tt_abbrind;
+ };
+
+ Each structure is written as a four-byte signed integer value for
+ tt_gmtoff, in a standard byte order, followed by a one-byte value for
+ tt_isdst and a one-byte value for tt_abbrind. In each structure,
+ tt_gmtoff gives the number of seconds to be added to UT, tt_isdst tells
+ whether tm_isdst should be set by localtime (3) and tt_abbrind serves
+ as an index into the array of time zone abbreviation characters that
+ follow the ttinfo structure(s) in the file.
+
+ Then there are tzh_leapcnt pairs of four-byte values, written in
+ standard byte order; the first value of each pair gives the time (as
+ returned by time(2)) at which a leap second occurs; the second gives
+ the total number of leap seconds to be applied during the time period
+ starting at the given time. The pairs of values are sorted in
+ ascending order by time.
+
+ Then there are tzh_ttisstdcnt standard/wall indicators, each stored as
+ a one-byte value; they tell whether the transition times associated
+ with local time types were specified as standard time or wall clock
+ time, and are used when a time zone file is used in handling POSIX-
+ style time zone environment variables.
+
+ Finally there are tzh_ttisgmtcnt UT/local indicators, each stored as a
+ one-byte value; they tell whether the transition times associated with
+ local time types were specified as UT or local time, and are used when
+ a time zone file is used in handling POSIX-style time zone environment
+ variables.
+
+ Localtime uses the first standard-time ttinfo structure in the file (or
+ simply the first ttinfo structure in the absence of a standard-time
+ structure) if either tzh_timecnt is zero or the time argument is less
+ than the first transition time recorded in the file.
+
+ For version-2-format time zone files, the above header and data are
+ followed by a second header and data, identical in format except that
+ eight bytes are used for each transition time or leap second time.
+ After the second header and data comes a newline-enclosed, POSIX-TZ-
+ environment-variable-style string for use in handling instants after
+ the last transition time stored in the file (with nothing between the
+ newlines if there is no POSIX representation for such instants).
+
+ For version-3-format time zone files, the POSIX-TZ-style string may use
+ two minor extensions to the POSIX TZ format, as described in
+ newtzset(3). First, the hours part of its transition times may be
+ signed and range from -167 through 167 instead of the POSIX-required
+ unsigned values from 0 through 24. Second, DST is in effect all year
+ if it starts January 1 at 00:00 and ends December 31 at 24:00 plus the
+ difference between daylight saving and standard time.
+
+ Future changes to the format may append more data.
+
+SEE ALSO
+ newctime(3), newtzset(3), zdump(8), zic(8)
+
+ TZFILE(5)
Deleted: vendor/tzcode/2016f/tzfile.h
===================================================================
--- vendor/tzcode/dist/tzfile.h 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzfile.h 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,170 +0,0 @@
-#ifndef TZFILE_H
-
-#define TZFILE_H
-
-/*
-** This file is in the public domain, so clarified as of
-** 1996-06-05 by Arthur David Olson.
-*/
-
-/*
-** This header is for use ONLY with the time conversion code.
-** There is no guarantee that it will remain unchanged,
-** or that it will remain at all.
-** Do NOT copy it to any system include directory.
-** Thank you!
-*/
-
-/*
-** Information about time zone files.
-*/
-
-#ifndef TZDIR
-#define TZDIR "/usr/local/etc/zoneinfo" /* Time zone object file directory */
-#endif /* !defined TZDIR */
-
-#ifndef TZDEFAULT
-#define TZDEFAULT "localtime"
-#endif /* !defined TZDEFAULT */
-
-#ifndef TZDEFRULES
-#define TZDEFRULES "posixrules"
-#endif /* !defined TZDEFRULES */
-
-/*
-** Each file begins with. . .
-*/
-
-#define TZ_MAGIC "TZif"
-
-struct tzhead {
- char tzh_magic[4]; /* TZ_MAGIC */
- char tzh_version[1]; /* '\0' or '2' as of 2005 */
- char tzh_reserved[15]; /* reserved--must be zero */
- char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
- char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
- char tzh_leapcnt[4]; /* coded number of leap seconds */
- char tzh_timecnt[4]; /* coded number of transition times */
- char tzh_typecnt[4]; /* coded number of local time types */
- char tzh_charcnt[4]; /* coded number of abbr. chars */
-};
-
-/*
-** . . .followed by. . .
-**
-** tzh_timecnt (char [4])s coded transition times a la time(2)
-** tzh_timecnt (unsigned char)s types of local time starting at above
-** tzh_typecnt repetitions of
-** one (char [4]) coded UTC offset in seconds
-** one (unsigned char) used to set tm_isdst
-** one (unsigned char) that's an abbreviation list index
-** tzh_charcnt (char)s '\0'-terminated zone abbreviations
-** tzh_leapcnt repetitions of
-** one (char [4]) coded leap second transition times
-** one (char [4]) total correction after above
-** tzh_ttisstdcnt (char)s indexed by type; if TRUE, transition
-** time is standard time, if FALSE,
-** transition time is wall clock time
-** if absent, transition times are
-** assumed to be wall clock time
-** tzh_ttisgmtcnt (char)s indexed by type; if TRUE, transition
-** time is UTC, if FALSE,
-** transition time is local time
-** if absent, transition times are
-** assumed to be local time
-*/
-
-/*
-** If tzh_version is '2' or greater, the above is followed by a second instance
-** of tzhead and a second instance of the data in which each coded transition
-** time uses 8 rather than 4 chars,
-** then a POSIX-TZ-environment-variable-style string for use in handling
-** instants after the last transition time stored in the file
-** (with nothing between the newlines if there is no POSIX representation for
-** such instants).
-*/
-
-/*
-** In the current implementation, "tzset()" refuses to deal with files that
-** exceed any of the limits below.
-*/
-
-#ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES 1200
-#endif /* !defined TZ_MAX_TIMES */
-
-#ifndef TZ_MAX_TYPES
-#ifndef NOSOLAR
-#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined NOSOLAR */
-#ifdef NOSOLAR
-/*
-** Must be at least 14 for Europe/Riga as of Jan 12 1995,
-** as noted by Earl Chew.
-*/
-#define TZ_MAX_TYPES 20 /* Maximum number of local time types */
-#endif /* !defined NOSOLAR */
-#endif /* !defined TZ_MAX_TYPES */
-
-#ifndef TZ_MAX_CHARS
-#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
- /* (limited by what unsigned chars can hold) */
-#endif /* !defined TZ_MAX_CHARS */
-
-#ifndef TZ_MAX_LEAPS
-#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
-#endif /* !defined TZ_MAX_LEAPS */
-
-#define SECSPERMIN 60
-#define MINSPERHOUR 60
-#define HOURSPERDAY 24
-#define DAYSPERWEEK 7
-#define DAYSPERNYEAR 365
-#define DAYSPERLYEAR 366
-#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
-#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
-#define MONSPERYEAR 12
-
-#define TM_SUNDAY 0
-#define TM_MONDAY 1
-#define TM_TUESDAY 2
-#define TM_WEDNESDAY 3
-#define TM_THURSDAY 4
-#define TM_FRIDAY 5
-#define TM_SATURDAY 6
-
-#define TM_JANUARY 0
-#define TM_FEBRUARY 1
-#define TM_MARCH 2
-#define TM_APRIL 3
-#define TM_MAY 4
-#define TM_JUNE 5
-#define TM_JULY 6
-#define TM_AUGUST 7
-#define TM_SEPTEMBER 8
-#define TM_OCTOBER 9
-#define TM_NOVEMBER 10
-#define TM_DECEMBER 11
-
-#define TM_YEAR_BASE 1900
-
-#define EPOCH_YEAR 1970
-#define EPOCH_WDAY TM_THURSDAY
-
-#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
-
-/*
-** Since everything in isleap is modulo 400 (or a factor of 400), we know that
-** isleap(y) == isleap(y % 400)
-** and so
-** isleap(a + b) == isleap((a + b) % 400)
-** or
-** isleap(a + b) == isleap(a % 400 + b % 400)
-** This is true even if % means modulo rather than Fortran remainder
-** (which is allowed by C89 but not C99).
-** We use this to avoid addition overflow problems.
-*/
-
-#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
-
-#endif /* !defined TZFILE_H */
Copied: vendor/tzcode/2016f/tzfile.h (from rev 7736, vendor/tzcode/dist/tzfile.h)
===================================================================
--- vendor/tzcode/2016f/tzfile.h (rev 0)
+++ vendor/tzcode/2016f/tzfile.h 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,169 @@
+#ifndef TZFILE_H
+
+#define TZFILE_H
+
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson.
+*/
+
+/*
+** This header is for use ONLY with the time conversion code.
+** There is no guarantee that it will remain unchanged,
+** or that it will remain at all.
+** Do NOT copy it to any system include directory.
+** Thank you!
+*/
+
+/*
+** Information about time zone files.
+*/
+
+#ifndef TZDIR
+#define TZDIR "/usr/local/etc/zoneinfo" /* Time zone object file directory */
+#endif /* !defined TZDIR */
+
+#ifndef TZDEFAULT
+#define TZDEFAULT "localtime"
+#endif /* !defined TZDEFAULT */
+
+#ifndef TZDEFRULES
+#define TZDEFRULES "posixrules"
+#endif /* !defined TZDEFRULES */
+
+/*
+** Each file begins with. . .
+*/
+
+#define TZ_MAGIC "TZif"
+
+struct tzhead {
+ char tzh_magic[4]; /* TZ_MAGIC */
+ char tzh_version[1]; /* '\0' or '2' or '3' as of 2013 */
+ char tzh_reserved[15]; /* reserved; must be zero */
+ char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
+ char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
+ char tzh_leapcnt[4]; /* coded number of leap seconds */
+ char tzh_timecnt[4]; /* coded number of transition times */
+ char tzh_typecnt[4]; /* coded number of local time types */
+ char tzh_charcnt[4]; /* coded number of abbr. chars */
+};
+
+/*
+** . . .followed by. . .
+**
+** tzh_timecnt (char [4])s coded transition times a la time(2)
+** tzh_timecnt (unsigned char)s types of local time starting at above
+** tzh_typecnt repetitions of
+** one (char [4]) coded UT offset in seconds
+** one (unsigned char) used to set tm_isdst
+** one (unsigned char) that's an abbreviation list index
+** tzh_charcnt (char)s '\0'-terminated zone abbreviations
+** tzh_leapcnt repetitions of
+** one (char [4]) coded leap second transition times
+** one (char [4]) total correction after above
+** tzh_ttisstdcnt (char)s indexed by type; if 1, transition
+** time is standard time, if 0,
+** transition time is wall clock time
+** if absent, transition times are
+** assumed to be wall clock time
+** tzh_ttisgmtcnt (char)s indexed by type; if 1, transition
+** time is UT, if 0,
+** transition time is local time
+** if absent, transition times are
+** assumed to be local time
+*/
+
+/*
+** If tzh_version is '2' or greater, the above is followed by a second instance
+** of tzhead and a second instance of the data in which each coded transition
+** time uses 8 rather than 4 chars,
+** then a POSIX-TZ-environment-variable-style string for use in handling
+** instants after the last transition time stored in the file
+** (with nothing between the newlines if there is no POSIX representation for
+** such instants).
+**
+** If tz_version is '3' or greater, the above is extended as follows.
+** First, the POSIX TZ string's hour offset may range from -167
+** through 167 as compared to the POSIX-required 0 through 24.
+** Second, its DST start time may be January 1 at 00:00 and its stop
+** time December 31 at 24:00 plus the difference between DST and
+** standard time, indicating DST all year.
+*/
+
+/*
+** In the current implementation, "tzset()" refuses to deal with files that
+** exceed any of the limits below.
+*/
+
+#ifndef TZ_MAX_TIMES
+#define TZ_MAX_TIMES 2000
+#endif /* !defined TZ_MAX_TIMES */
+
+#ifndef TZ_MAX_TYPES
+/* This must be at least 17 for Europe/Samara and Europe/Vilnius. */
+#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
+#endif /* !defined TZ_MAX_TYPES */
+
+#ifndef TZ_MAX_CHARS
+#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
+ /* (limited by what unsigned chars can hold) */
+#endif /* !defined TZ_MAX_CHARS */
+
+#ifndef TZ_MAX_LEAPS
+#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
+#endif /* !defined TZ_MAX_LEAPS */
+
+#define SECSPERMIN 60
+#define MINSPERHOUR 60
+#define HOURSPERDAY 24
+#define DAYSPERWEEK 7
+#define DAYSPERNYEAR 365
+#define DAYSPERLYEAR 366
+#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY ((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR 12
+
+#define TM_SUNDAY 0
+#define TM_MONDAY 1
+#define TM_TUESDAY 2
+#define TM_WEDNESDAY 3
+#define TM_THURSDAY 4
+#define TM_FRIDAY 5
+#define TM_SATURDAY 6
+
+#define TM_JANUARY 0
+#define TM_FEBRUARY 1
+#define TM_MARCH 2
+#define TM_APRIL 3
+#define TM_MAY 4
+#define TM_JUNE 5
+#define TM_JULY 6
+#define TM_AUGUST 7
+#define TM_SEPTEMBER 8
+#define TM_OCTOBER 9
+#define TM_NOVEMBER 10
+#define TM_DECEMBER 11
+
+#define TM_YEAR_BASE 1900
+
+#define EPOCH_YEAR 1970
+#define EPOCH_WDAY TM_THURSDAY
+
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+
+/*
+** Since everything in isleap is modulo 400 (or a factor of 400), we know that
+** isleap(y) == isleap(y % 400)
+** and so
+** isleap(a + b) == isleap((a + b) % 400)
+** or
+** isleap(a + b) == isleap(a % 400 + b % 400)
+** This is true even if % means modulo rather than Fortran remainder
+** (which is allowed by C89 but not C99).
+** We use this to avoid addition overflow problems.
+*/
+
+#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
+
+#endif /* !defined TZFILE_H */
Deleted: vendor/tzcode/2016f/tzselect.8
===================================================================
--- vendor/tzcode/dist/tzselect.8 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzselect.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,42 +0,0 @@
-.TH TZSELECT 8
-.SH NAME
-tzselect \- select a time zone
-.SH SYNOPSIS
-.B tzselect
-.SH DESCRIPTION
-The
-.B tzselect
-program asks the user for information about the current location,
-and outputs the resulting time zone description to standard output.
-The output is suitable as a value for the TZ environment variable.
-.PP
-All interaction with the user is done via standard input and standard error.
-.SH "ENVIRONMENT VARIABLES"
-.TP
-\f3AWK\fP
-Name of a Posix-compliant
-.I awk
-program (default:
-.BR awk ).
-.TP
-\f3TZDIR\fP
-Name of the directory containing time zone data files (default:
-.BR /usr/local/etc/zoneinfo ).
-.SH FILES
-.TP
-\f2TZDIR\fP\f3/iso3166.tab\fP
-Table of ISO 3166 2-letter country codes and country names.
-.TP
-\f2TZDIR\fP\f3/zone.tab\fP
-Table of country codes, latitude and longitude, TZ values, and
-descriptive comments.
-.TP
-\f2TZDIR\fP\f3/\fP\f2TZ\fP
-Time zone data file for time zone \f2TZ\fP.
-.SH "EXIT STATUS"
-The exit status is zero if a time zone was successfully obtained from the user,
-nonzero otherwise.
-.SH "SEE ALSO"
-newctime(3), tzfile(5), zdump(8), zic(8)
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/tzselect.8 (from rev 7736, vendor/tzcode/dist/tzselect.8)
===================================================================
--- vendor/tzcode/2016f/tzselect.8 (rev 0)
+++ vendor/tzcode/2016f/tzselect.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,113 @@
+.TH TZSELECT 8
+.SH NAME
+tzselect \- select a time zone
+.SH SYNOPSIS
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.B tzselect
+[
+.B \*-c
+.I coord
+] [
+.B \*-n
+.I limit
+] [
+.B \*-\*-help
+] [
+.B \*-\*-version
+]
+.SH DESCRIPTION
+The
+.B tzselect
+program asks the user for information about the current location,
+and outputs the resulting time zone description to standard output.
+The output is suitable as a value for the TZ environment variable.
+.PP
+All interaction with the user is done via standard input and standard error.
+.SH OPTIONS
+.TP
+.BI "\*-c " coord
+Instead of asking for continent and then country and then city,
+ask for selection from time zones whose largest cities
+are closest to the location with geographical coordinates
+.I coord.
+Use ISO 6709 notation for
+.I coord,
+that is, a latitude immediately followed by a longitude. The latitude
+and longitude should be signed integers followed by an optional
+decimal point and fraction: positive numbers represent north and east,
+negative south and west. Latitudes with two and longitudes with three
+integer digits are treated as degrees; latitudes with four or six and
+longitudes with five or seven integer digits are treated as
+.I "DDMM, DDDMM, DDMMSS,"
+or
+.I DDDMMSS
+representing
+.I DD
+or
+.I DDD
+degrees,
+.I MM
+minutes,
+and zero or
+.I SS
+seconds, with any trailing fractions represent fractional minutes or
+(if
+.I SS
+is present) seconds. The decimal point is that of the current locale.
+For example, in the (default) C locale,
+.B "\*-c\ +40.689\*-074.045"
+specifies 40.689\(de\|N, 74.045\(de\|W,
+.B "\*-c\ +4041.4\*-07402.7"
+specifies 40\(de\|41.4\(fm\|N, 74\(de\|2.7\(fm\|W, and
+.B "\*-c\ +404121\*-0740240"
+specifies 40\(de\|41\(fm\|21\(sd\|N, 74\(de\|2\(fm\|40\(sd\|W.
+If
+.I coord
+is not one of the documented forms, the resulting behavior is unspecified.
+.TP
+.BI "\*-n " limit
+When
+.B \*-c
+is used, display the closest
+.I limit
+locations (default 10).
+.TP
+.B "\*-\*-help"
+Output help information and exit.
+.TP
+.B "\*-\*-version"
+Output version information and exit.
+.SH "ENVIRONMENT VARIABLES"
+.TP
+\f3AWK\fP
+Name of a Posix-compliant
+.I awk
+program (default:
+.BR awk ).
+.TP
+\f3TZDIR\fP
+Name of the directory containing time zone data files (default:
+.BR /usr/local/etc/zoneinfo ).
+.SH FILES
+.TP
+\f2TZDIR\fP\f3/iso3166.tab\fP
+Table of ISO 3166 2-letter country codes and country names.
+.TP
+\f2TZDIR\fP\f3/zone1970.tab\fP
+Table of country codes, latitude and longitude, zone names, and
+descriptive comments.
+.TP
+\f2TZDIR\fP\f3/\fP\f2TZ\fP
+Time zone data file for time zone \f2TZ\fP.
+.SH "EXIT STATUS"
+The exit status is zero if a time zone was successfully obtained from the user,
+nonzero otherwise.
+.SH "SEE ALSO"
+newctime(3), tzfile(5), zdump(8), zic(8)
+.SH NOTES
+Applications should not assume that
+.BR tzselect 's
+output matches the user's political preferences.
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/tzselect.8.txt
===================================================================
--- vendor/tzcode/dist/tzselect.8.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzselect.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,42 +0,0 @@
-TZSELECT(8) TZSELECT(8)
-
-NAME
- tzselect - select a time zone
-
-SYNOPSIS
- tzselect
-
-DESCRIPTION
- The tzselect program asks the user for information about the current
- location, and outputs the resulting time zone description to standard
- output. The output is suitable as a value for the TZ environment
- variable.
-
- All interaction with the user is done via standard input and standard
- error.
-
-ENVIRONMENT VARIABLES
- AWK Name of a Posix-compliant awk program (default: awk).
-
- TZDIR Name of the directory containing time zone data files (default:
- /usr/local/etc/zoneinfo).
-
-FILES
- TZDIR/iso3166.tab
- Table of ISO 3166 2-letter country codes and country names.
-
- TZDIR/zone.tab
- Table of country codes, latitude and longitude, TZ values, and
- descriptive comments.
-
- TZDIR/TZ
- Time zone data file for time zone TZ.
-
-EXIT STATUS
- The exit status is zero if a time zone was successfully obtained from
- the user, nonzero otherwise.
-
-SEE ALSO
- newctime(3), tzfile(5), zdump(8), zic(8)
-
- TZSELECT(8)
Copied: vendor/tzcode/2016f/tzselect.8.txt (from rev 7736, vendor/tzcode/dist/tzselect.8.txt)
===================================================================
--- vendor/tzcode/2016f/tzselect.8.txt (rev 0)
+++ vendor/tzcode/2016f/tzselect.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,77 @@
+TZSELECT(8) System Manager's Manual TZSELECT(8)
+
+NAME
+ tzselect - select a time zone
+
+SYNOPSIS
+ tzselect [ -c coord ] [ -n limit ] [ --help ] [ --version ]
+
+DESCRIPTION
+ The tzselect program asks the user for information about the current
+ location, and outputs the resulting time zone description to standard
+ output. The output is suitable as a value for the TZ environment
+ variable.
+
+ All interaction with the user is done via standard input and standard
+ error.
+
+OPTIONS
+ -c coord
+ Instead of asking for continent and then country and then city,
+ ask for selection from time zones whose largest cities are
+ closest to the location with geographical coordinates coord.
+ Use ISO 6709 notation for coord, that is, a latitude immediately
+ followed by a longitude. The latitude and longitude should be
+ signed integers followed by an optional decimal point and
+ fraction: positive numbers represent north and east, negative
+ south and west. Latitudes with two and longitudes with three
+ integer digits are treated as degrees; latitudes with four or
+ six and longitudes with five or seven integer digits are treated
+ as DDMM, DDDMM, DDMMSS, or DDDMMSS representing DD or DDD
+ degrees, MM minutes, and zero or SS seconds, with any trailing
+ fractions represent fractional minutes or (if SS is present)
+ seconds. The decimal point is that of the current locale. For
+ example, in the (default) C locale, -c +40.689-074.045 specifies
+ 40.689oN, 74.045oW, -c +4041.4-07402.7 specifies 40o41.4'N,
+ 74o2.7'W, and -c +404121-0740240 specifies 40o41'21''N,
+ 74o2'40''W. If coord is not one of the documented forms, the
+ resulting behavior is unspecified.
+
+ -n limit
+ When -c is used, display the closest limit locations (default
+ 10).
+
+ --help Output help information and exit.
+
+ --version
+ Output version information and exit.
+
+ENVIRONMENT VARIABLES
+ AWK Name of a Posix-compliant awk program (default: awk).
+
+ TZDIR Name of the directory containing time zone data files (default:
+ /usr/local/etc/zoneinfo).
+
+FILES
+ TZDIR/iso3166.tab
+ Table of ISO 3166 2-letter country codes and country names.
+
+ TZDIR/zone1970.tab
+ Table of country codes, latitude and longitude, zone names, and
+ descriptive comments.
+
+ TZDIR/TZ
+ Time zone data file for time zone TZ.
+
+EXIT STATUS
+ The exit status is zero if a time zone was successfully obtained from
+ the user, nonzero otherwise.
+
+SEE ALSO
+ newctime(3), tzfile(5), zdump(8), zic(8)
+
+NOTES
+ Applications should not assume that tzselect's output matches the
+ user's political preferences.
+
+ TZSELECT(8)
Deleted: vendor/tzcode/2016f/tzselect.ksh
===================================================================
--- vendor/tzcode/dist/tzselect.ksh 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/tzselect.ksh 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,317 +0,0 @@
-#!/bin/bash
-
-PKGVERSION='(tzcode) '
-TZVERSION=see_Makefile
-
-# Ask the user about the time zone, and output the resulting TZ value to stdout.
-# Interact with the user via stderr and stdin.
-
-# Contributed by Paul Eggert.
-
-# Porting notes:
-#
-# This script requires a Posix-like shell with the extension of a
-# 'select' statement. The 'select' statement was introduced in the
-# Korn shell and is available in Bash and other shell implementations.
-# If your host lacks both Bash and the Korn shell, you can get their
-# source from one of these locations:
-#
-# Bash <http://www.gnu.org/software/bash/bash.html>
-# Korn Shell <http://www.kornshell.com/>
-# Public Domain Korn Shell <http://www.cs.mun.ca/~michael/pdksh/>
-#
-# This script also uses several features of modern awk programs.
-# If your host lacks awk, or has an old awk that does not conform to Posix,
-# you can use either of the following free programs instead:
-#
-# Gawk (GNU awk) <http://www.gnu.org/software/gawk/>
-# mawk <http://invisible-island.net/mawk/>
-
-
-# Specify default values for environment variables if they are unset.
-: ${AWK=awk}
-: ${TZDIR=$(pwd)}
-
-# Check for awk Posix compliance.
-($AWK -v x=y 'BEGIN { exit 123 }') </dev/null >/dev/null 2>&1
-[ $? = 123 ] || {
- echo >&2 "$0: Sorry, your \`$AWK' program is not Posix compatible."
- exit 1
-}
-
-if [ "$1" = "--help" ]; then
- cat <<EOF
-Usage: tzselect
-Select a time zone interactively.
-
-Report bugs to tz at iana.org.
-EOF
- exit
-elif [ "$1" = "--version" ]; then
- cat <<EOF
-tzselect $PKGVERSION$TZVERSION
-EOF
- exit
-fi
-
-# Make sure the tables are readable.
-TZ_COUNTRY_TABLE=$TZDIR/iso3166.tab
-TZ_ZONE_TABLE=$TZDIR/zone.tab
-for f in $TZ_COUNTRY_TABLE $TZ_ZONE_TABLE
-do
- <$f || {
- echo >&2 "$0: time zone files are not set up correctly"
- exit 1
- }
-done
-
-newline='
-'
-IFS=$newline
-
-
-# Work around a bug in bash 1.14.7 and earlier, where $PS3 is sent to stdout.
-case $(echo 1 | (select x in x; do break; done) 2>/dev/null) in
-?*) PS3=
-esac
-
-
-# Begin the main loop. We come back here if the user wants to retry.
-while
-
- echo >&2 'Please identify a location' \
- 'so that time zone rules can be set correctly.'
-
- continent=
- country=
- region=
-
-
- # Ask the user for continent or ocean.
-
- echo >&2 'Please select a continent or ocean.'
-
- select continent in \
- Africa \
- Americas \
- Antarctica \
- 'Arctic Ocean' \
- Asia \
- 'Atlantic Ocean' \
- Australia \
- Europe \
- 'Indian Ocean' \
- 'Pacific Ocean' \
- 'none - I want to specify the time zone using the Posix TZ format.'
- do
- case $continent in
- '')
- echo >&2 'Please enter a number in range.';;
- ?*)
- case $continent in
- Americas) continent=America;;
- *' '*) continent=$(expr "$continent" : '\([^ ]*\)')
- esac
- break
- esac
- done
- case $continent in
- '')
- exit 1;;
- none)
- # Ask the user for a Posix TZ string. Check that it conforms.
- while
- echo >&2 'Please enter the desired value' \
- 'of the TZ environment variable.'
- echo >&2 'For example, GST-10 is a zone named GST' \
- 'that is 10 hours ahead (east) of UTC.'
- read TZ
- $AWK -v TZ="$TZ" 'BEGIN {
- tzname = "[^-+,0-9][^-+,0-9][^-+,0-9]+"
- time = "[0-2]?[0-9](:[0-5][0-9](:[0-5][0-9])?)?"
- offset = "[-+]?" time
- date = "(J?[0-9]+|M[0-9]+\.[0-9]+\.[0-9]+)"
- datetime = "," date "(/" time ")?"
- tzpattern = "^(:.*|" tzname offset "(" tzname \
- "(" offset ")?(" datetime datetime ")?)?)$"
- if (TZ ~ tzpattern) exit 1
- exit 0
- }'
- do
- echo >&2 "\`$TZ' is not a conforming" \
- 'Posix time zone string.'
- done
- TZ_for_date=$TZ;;
- *)
- # Get list of names of countries in the continent or ocean.
- countries=$($AWK -F'\t' \
- -v continent="$continent" \
- -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
- '
- /^#/ { next }
- $3 ~ ("^" continent "/") {
- if (!cc_seen[$1]++) cc_list[++ccs] = $1
- }
- END {
- while (getline <TZ_COUNTRY_TABLE) {
- if ($0 !~ /^#/) cc_name[$1] = $2
- }
- for (i = 1; i <= ccs; i++) {
- country = cc_list[i]
- if (cc_name[country]) {
- country = cc_name[country]
- }
- print country
- }
- }
- ' <$TZ_ZONE_TABLE | sort -f)
-
-
- # If there's more than one country, ask the user which one.
- case $countries in
- *"$newline"*)
- echo >&2 'Please select a country.'
- select country in $countries
- do
- case $country in
- '') echo >&2 'Please enter a number in range.';;
- ?*) break
- esac
- done
-
- case $country in
- '') exit 1
- esac;;
- *)
- country=$countries
- esac
-
-
- # Get list of names of time zone rule regions in the country.
- regions=$($AWK -F'\t' \
- -v country="$country" \
- -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
- '
- BEGIN {
- cc = country
- while (getline <TZ_COUNTRY_TABLE) {
- if ($0 !~ /^#/ && country == $2) {
- cc = $1
- break
- }
- }
- }
- $1 == cc { print $4 }
- ' <$TZ_ZONE_TABLE)
-
-
- # If there's more than one region, ask the user which one.
- case $regions in
- *"$newline"*)
- echo >&2 'Please select one of the following' \
- 'time zone regions.'
- select region in $regions
- do
- case $region in
- '') echo >&2 'Please enter a number in range.';;
- ?*) break
- esac
- done
- case $region in
- '') exit 1
- esac;;
- *)
- region=$regions
- esac
-
- # Determine TZ from country and region.
- TZ=$($AWK -F'\t' \
- -v country="$country" \
- -v region="$region" \
- -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
- '
- BEGIN {
- cc = country
- while (getline <TZ_COUNTRY_TABLE) {
- if ($0 !~ /^#/ && country == $2) {
- cc = $1
- break
- }
- }
- }
- $1 == cc && $4 == region { print $3 }
- ' <$TZ_ZONE_TABLE)
-
- # Make sure the corresponding zoneinfo file exists.
- TZ_for_date=$TZDIR/$TZ
- <$TZ_for_date || {
- echo >&2 "$0: time zone files are not set up correctly"
- exit 1
- }
- esac
-
-
- # Use the proposed TZ to output the current date relative to UTC.
- # Loop until they agree in seconds.
- # Give up after 8 unsuccessful tries.
-
- extra_info=
- for i in 1 2 3 4 5 6 7 8
- do
- TZdate=$(LANG=C TZ="$TZ_for_date" date)
- UTdate=$(LANG=C TZ=UTC0 date)
- TZsec=$(expr "$TZdate" : '.*:\([0-5][0-9]\)')
- UTsec=$(expr "$UTdate" : '.*:\([0-5][0-9]\)')
- case $TZsec in
- $UTsec)
- extra_info="
-Local time is now: $TZdate.
-Universal Time is now: $UTdate."
- break
- esac
- done
-
-
- # Output TZ info and ask the user to confirm.
-
- echo >&2 ""
- echo >&2 "The following information has been given:"
- echo >&2 ""
- case $country+$region in
- ?*+?*) echo >&2 " $country$newline $region";;
- ?*+) echo >&2 " $country";;
- +) echo >&2 " TZ='$TZ'"
- esac
- echo >&2 ""
- echo >&2 "Therefore TZ='$TZ' will be used.$extra_info"
- echo >&2 "Is the above information OK?"
-
- ok=
- select ok in Yes No
- do
- case $ok in
- '') echo >&2 'Please enter 1 for Yes, or 2 for No.';;
- ?*) break
- esac
- done
- case $ok in
- '') exit 1;;
- Yes) break
- esac
-do :
-done
-
-case $SHELL in
-*csh) file=.login line="setenv TZ '$TZ'";;
-*) file=.profile line="TZ='$TZ'; export TZ"
-esac
-
-echo >&2 "
-You can make this change permanent for yourself by appending the line
- $line
-to the file '$file' in your home directory; then log out and log in again.
-
-Here is that TZ value again, this time on standard output so that you
-can use the $0 command in shell scripts:"
-
-echo "$TZ"
Copied: vendor/tzcode/2016f/tzselect.ksh (from rev 7736, vendor/tzcode/dist/tzselect.ksh)
===================================================================
--- vendor/tzcode/2016f/tzselect.ksh (rev 0)
+++ vendor/tzcode/2016f/tzselect.ksh 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,559 @@
+#!/bin/bash
+
+PKGVERSION='(tzcode) '
+TZVERSION=see_Makefile
+REPORT_BUGS_TO=tz at iana.org
+
+# Ask the user about the time zone, and output the resulting TZ value to stdout.
+# Interact with the user via stderr and stdin.
+
+# Contributed by Paul Eggert. This file is in the public domain.
+
+# Porting notes:
+#
+# This script requires a Posix-like shell and prefers the extension of a
+# 'select' statement. The 'select' statement was introduced in the
+# Korn shell and is available in Bash and other shell implementations.
+# If your host lacks both Bash and the Korn shell, you can get their
+# source from one of these locations:
+#
+# Bash <http://www.gnu.org/software/bash/bash.html>
+# Korn Shell <http://www.kornshell.com/>
+# Public Domain Korn Shell <http://www.cs.mun.ca/~michael/pdksh/>
+#
+# For portability to Solaris 9 /bin/sh this script avoids some POSIX
+# features and common extensions, such as $(...) (which works sometimes
+# but not others), $((...)), and $10.
+#
+# This script also uses several features of modern awk programs.
+# If your host lacks awk, or has an old awk that does not conform to Posix,
+# you can use either of the following free programs instead:
+#
+# Gawk (GNU awk) <http://www.gnu.org/software/gawk/>
+# mawk <http://invisible-island.net/mawk/>
+
+
+# Specify default values for environment variables if they are unset.
+: ${AWK=awk}
+: ${TZDIR=`pwd`}
+
+# Output one argument as-is to standard output.
+# Safer than 'echo', which can mishandle '\' or leading '-'.
+say() {
+ printf '%s\n' "$1"
+}
+
+# Check for awk Posix compliance.
+($AWK -v x=y 'BEGIN { exit 123 }') </dev/null >/dev/null 2>&1
+[ $? = 123 ] || {
+ say >&2 "$0: Sorry, your '$AWK' program is not Posix compatible."
+ exit 1
+}
+
+coord=
+location_limit=10
+zonetabtype=zone1970
+
+usage="Usage: tzselect [--version] [--help] [-c COORD] [-n LIMIT]
+Select a time zone interactively.
+
+Options:
+
+ -c COORD
+ Instead of asking for continent and then country and then city,
+ ask for selection from time zones whose largest cities
+ are closest to the location with geographical coordinates COORD.
+ COORD should use ISO 6709 notation, for example, '-c +4852+00220'
+ for Paris (in degrees and minutes, North and East), or
+ '-c -35-058' for Buenos Aires (in degrees, South and West).
+
+ -n LIMIT
+ Display at most LIMIT locations when -c is used (default $location_limit).
+
+ --version
+ Output version information.
+
+ --help
+ Output this help.
+
+Report bugs to $REPORT_BUGS_TO."
+
+# Ask the user to select from the function's arguments,
+# and assign the selected argument to the variable 'select_result'.
+# Exit on EOF or I/O error. Use the shell's 'select' builtin if available,
+# falling back on a less-nice but portable substitute otherwise.
+if
+ case $BASH_VERSION in
+ ?*) : ;;
+ '')
+ # '; exit' should be redundant, but Dash doesn't properly fail without it.
+ (eval 'set --; select x; do break; done; exit') </dev/null 2>/dev/null
+ esac
+then
+ # Do this inside 'eval', as otherwise the shell might exit when parsing it
+ # even though it is never executed.
+ eval '
+ doselect() {
+ select select_result
+ do
+ case $select_result in
+ "") echo >&2 "Please enter a number in range." ;;
+ ?*) break
+ esac
+ done || exit
+ }
+
+ # Work around a bug in bash 1.14.7 and earlier, where $PS3 is sent to stdout.
+ case $BASH_VERSION in
+ [01].*)
+ case `echo 1 | (select x in x; do break; done) 2>/dev/null` in
+ ?*) PS3=
+ esac
+ esac
+ '
+else
+ doselect() {
+ # Field width of the prompt numbers.
+ select_width=`expr $# : '.*'`
+
+ select_i=
+
+ while :
+ do
+ case $select_i in
+ '')
+ select_i=0
+ for select_word
+ do
+ select_i=`expr $select_i + 1`
+ printf >&2 "%${select_width}d) %s\\n" $select_i "$select_word"
+ done ;;
+ *[!0-9]*)
+ echo >&2 'Please enter a number in range.' ;;
+ *)
+ if test 1 -le $select_i && test $select_i -le $#; then
+ shift `expr $select_i - 1`
+ select_result=$1
+ break
+ fi
+ echo >&2 'Please enter a number in range.'
+ esac
+
+ # Prompt and read input.
+ printf >&2 %s "${PS3-#? }"
+ read select_i || exit
+ done
+ }
+fi
+
+while getopts c:n:t:-: opt
+do
+ case $opt$OPTARG in
+ c*)
+ coord=$OPTARG ;;
+ n*)
+ location_limit=$OPTARG ;;
+ t*) # Undocumented option, used for developer testing.
+ zonetabtype=$OPTARG ;;
+ -help)
+ exec echo "$usage" ;;
+ -version)
+ exec echo "tzselect $PKGVERSION$TZVERSION" ;;
+ -*)
+ say >&2 "$0: -$opt$OPTARG: unknown option; try '$0 --help'"; exit 1 ;;
+ *)
+ say >&2 "$0: try '$0 --help'"; exit 1 ;;
+ esac
+done
+
+shift `expr $OPTIND - 1`
+case $# in
+0) ;;
+*) say >&2 "$0: $1: unknown argument"; exit 1 ;;
+esac
+
+# Make sure the tables are readable.
+TZ_COUNTRY_TABLE=$TZDIR/iso3166.tab
+TZ_ZONE_TABLE=$TZDIR/$zonetabtype.tab
+for f in $TZ_COUNTRY_TABLE $TZ_ZONE_TABLE
+do
+ <"$f" || {
+ say >&2 "$0: time zone files are not set up correctly"
+ exit 1
+ }
+done
+
+# If the current locale does not support UTF-8, convert data to current
+# locale's format if possible, as the shell aligns columns better that way.
+# Check the UTF-8 of U+12345 CUNEIFORM SIGN URU TIMES KI.
+! $AWK 'BEGIN { u12345 = "\360\222\215\205"; exit length(u12345) != 1 }' &&
+ { tmp=`(mktemp -d) 2>/dev/null` || {
+ tmp=${TMPDIR-/tmp}/tzselect.$$ &&
+ (umask 77 && mkdir -- "$tmp")
+ };} &&
+ trap 'status=$?; rm -fr -- "$tmp"; exit $status' 0 HUP INT PIPE TERM &&
+ (iconv -f UTF-8 -t //TRANSLIT <"$TZ_COUNTRY_TABLE" >$tmp/iso3166.tab) \
+ 2>/dev/null &&
+ TZ_COUNTRY_TABLE=$tmp/iso3166.tab &&
+ iconv -f UTF-8 -t //TRANSLIT <"$TZ_ZONE_TABLE" >$tmp/$zonetabtype.tab &&
+ TZ_ZONE_TABLE=$tmp/$zonetabtype.tab
+
+newline='
+'
+IFS=$newline
+
+
+# Awk script to read a time zone table and output the same table,
+# with each column preceded by its distance from 'here'.
+output_distances='
+ BEGIN {
+ FS = "\t"
+ while (getline <TZ_COUNTRY_TABLE)
+ if ($0 ~ /^[^#]/)
+ country[$1] = $2
+ country["US"] = "US" # Otherwise the strings get too long.
+ }
+ function abs(x) {
+ return x < 0 ? -x : x;
+ }
+ function min(x, y) {
+ return x < y ? x : y;
+ }
+ function convert_coord(coord, deg, minute, ilen, sign, sec) {
+ if (coord ~ /^[-+]?[0-9]?[0-9][0-9][0-9][0-9][0-9][0-9]([^0-9]|$)/) {
+ degminsec = coord
+ intdeg = degminsec < 0 ? -int(-degminsec / 10000) : int(degminsec / 10000)
+ minsec = degminsec - intdeg * 10000
+ intmin = minsec < 0 ? -int(-minsec / 100) : int(minsec / 100)
+ sec = minsec - intmin * 100
+ deg = (intdeg * 3600 + intmin * 60 + sec) / 3600
+ } else if (coord ~ /^[-+]?[0-9]?[0-9][0-9][0-9][0-9]([^0-9]|$)/) {
+ degmin = coord
+ intdeg = degmin < 0 ? -int(-degmin / 100) : int(degmin / 100)
+ minute = degmin - intdeg * 100
+ deg = (intdeg * 60 + minute) / 60
+ } else
+ deg = coord
+ return deg * 0.017453292519943296
+ }
+ function convert_latitude(coord) {
+ match(coord, /..*[-+]/)
+ return convert_coord(substr(coord, 1, RLENGTH - 1))
+ }
+ function convert_longitude(coord) {
+ match(coord, /..*[-+]/)
+ return convert_coord(substr(coord, RLENGTH))
+ }
+ # Great-circle distance between points with given latitude and longitude.
+ # Inputs and output are in radians. This uses the great-circle special
+ # case of the Vicenty formula for distances on ellipsoids.
+ function gcdist(lat1, long1, lat2, long2, dlong, x, y, num, denom) {
+ dlong = long2 - long1
+ x = cos(lat2) * sin(dlong)
+ y = cos(lat1) * sin(lat2) - sin(lat1) * cos(lat2) * cos(dlong)
+ num = sqrt(x * x + y * y)
+ denom = sin(lat1) * sin(lat2) + cos(lat1) * cos(lat2) * cos(dlong)
+ return atan2(num, denom)
+ }
+ # Parallel distance between points with given latitude and longitude.
+ # This is the product of the longitude difference and the cosine
+ # of the latitude of the point that is further from the equator.
+ # I.e., it considers longitudes to be further apart if they are
+ # nearer the equator.
+ function pardist(lat1, long1, lat2, long2) {
+ return abs(long1 - long2) * min(cos(lat1), cos(lat2))
+ }
+ # The distance function is the sum of the great-circle distance and
+ # the parallel distance. It could be weighted.
+ function dist(lat1, long1, lat2, long2) {
+ return gcdist(lat1, long1, lat2, long2) + pardist(lat1, long1, lat2, long2)
+ }
+ BEGIN {
+ coord_lat = convert_latitude(coord)
+ coord_long = convert_longitude(coord)
+ }
+ /^[^#]/ {
+ here_lat = convert_latitude($2)
+ here_long = convert_longitude($2)
+ line = $1 "\t" $2 "\t" $3
+ sep = "\t"
+ ncc = split($1, cc, /,/)
+ for (i = 1; i <= ncc; i++) {
+ line = line sep country[cc[i]]
+ sep = ", "
+ }
+ if (NF == 4)
+ line = line " - " $4
+ printf "%g\t%s\n", dist(coord_lat, coord_long, here_lat, here_long), line
+ }
+'
+
+# Begin the main loop. We come back here if the user wants to retry.
+while
+
+ echo >&2 'Please identify a location' \
+ 'so that time zone rules can be set correctly.'
+
+ continent=
+ country=
+ region=
+
+ case $coord in
+ ?*)
+ continent=coord;;
+ '')
+
+ # Ask the user for continent or ocean.
+
+ echo >&2 'Please select a continent, ocean, "coord", or "TZ".'
+
+ quoted_continents=`
+ $AWK '
+ BEGIN { FS = "\t" }
+ /^[^#]/ {
+ entry = substr($3, 1, index($3, "/") - 1)
+ if (entry == "America")
+ entry = entry "s"
+ if (entry ~ /^(Arctic|Atlantic|Indian|Pacific)$/)
+ entry = entry " Ocean"
+ printf "'\''%s'\''\n", entry
+ }
+ ' <"$TZ_ZONE_TABLE" |
+ sort -u |
+ tr '\n' ' '
+ echo ''
+ `
+
+ eval '
+ doselect '"$quoted_continents"' \
+ "coord - I want to use geographical coordinates." \
+ "TZ - I want to specify the time zone using the Posix TZ format."
+ continent=$select_result
+ case $continent in
+ Americas) continent=America;;
+ *" "*) continent=`expr "$continent" : '\''\([^ ]*\)'\''`
+ esac
+ '
+ esac
+
+ case $continent in
+ TZ)
+ # Ask the user for a Posix TZ string. Check that it conforms.
+ while
+ echo >&2 'Please enter the desired value' \
+ 'of the TZ environment variable.'
+ echo >&2 'For example, GST-10 is a zone named GST' \
+ 'that is 10 hours ahead (east) of UTC.'
+ read TZ
+ $AWK -v TZ="$TZ" 'BEGIN {
+ tzname = "(<[[:alnum:]+-]{3,}>|[[:alpha:]]{3,})"
+ time = "(2[0-4]|[0-1]?[0-9])" \
+ "(:[0-5][0-9](:[0-5][0-9])?)?"
+ offset = "[-+]?" time
+ mdate = "M([1-9]|1[0-2])\\.[1-5]\\.[0-6]"
+ jdate = "((J[1-9]|[0-9]|J?[1-9][0-9]" \
+ "|J?[1-2][0-9][0-9])|J?3[0-5][0-9]|J?36[0-5])"
+ datetime = ",(" mdate "|" jdate ")(/" time ")?"
+ tzpattern = "^(:.*|" tzname offset "(" tzname \
+ "(" offset ")?(" datetime datetime ")?)?)$"
+ if (TZ ~ tzpattern) exit 1
+ exit 0
+ }'
+ do
+ say >&2 "'$TZ' is not a conforming Posix time zone string."
+ done
+ TZ_for_date=$TZ;;
+ *)
+ case $continent in
+ coord)
+ case $coord in
+ '')
+ echo >&2 'Please enter coordinates' \
+ 'in ISO 6709 notation.'
+ echo >&2 'For example, +4042-07403 stands for'
+ echo >&2 '40 degrees 42 minutes north,' \
+ '74 degrees 3 minutes west.'
+ read coord;;
+ esac
+ distance_table=`$AWK \
+ -v coord="$coord" \
+ -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+ "$output_distances" <"$TZ_ZONE_TABLE" |
+ sort -n |
+ sed "${location_limit}q"
+ `
+ regions=`say "$distance_table" | $AWK '
+ BEGIN { FS = "\t" }
+ { print $NF }
+ '`
+ echo >&2 'Please select one of the following' \
+ 'time zone regions,'
+ echo >&2 'listed roughly in increasing order' \
+ "of distance from $coord".
+ doselect $regions
+ region=$select_result
+ TZ=`say "$distance_table" | $AWK -v region="$region" '
+ BEGIN { FS="\t" }
+ $NF == region { print $4 }
+ '`
+ ;;
+ *)
+ # Get list of names of countries in the continent or ocean.
+ countries=`$AWK \
+ -v continent="$continent" \
+ -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+ '
+ BEGIN { FS = "\t" }
+ /^#/ { next }
+ $3 ~ ("^" continent "/") {
+ ncc = split($1, cc, /,/)
+ for (i = 1; i <= ncc; i++)
+ if (!cc_seen[cc[i]]++) cc_list[++ccs] = cc[i]
+ }
+ END {
+ while (getline <TZ_COUNTRY_TABLE) {
+ if ($0 !~ /^#/) cc_name[$1] = $2
+ }
+ for (i = 1; i <= ccs; i++) {
+ country = cc_list[i]
+ if (cc_name[country]) {
+ country = cc_name[country]
+ }
+ print country
+ }
+ }
+ ' <"$TZ_ZONE_TABLE" | sort -f`
+
+
+ # If there's more than one country, ask the user which one.
+ case $countries in
+ *"$newline"*)
+ echo >&2 'Please select a country' \
+ 'whose clocks agree with yours.'
+ doselect $countries
+ country=$select_result;;
+ *)
+ country=$countries
+ esac
+
+
+ # Get list of names of time zone rule regions in the country.
+ regions=`$AWK \
+ -v country="$country" \
+ -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+ '
+ BEGIN {
+ FS = "\t"
+ cc = country
+ while (getline <TZ_COUNTRY_TABLE) {
+ if ($0 !~ /^#/ && country == $2) {
+ cc = $1
+ break
+ }
+ }
+ }
+ /^#/ { next }
+ $1 ~ cc { print $4 }
+ ' <"$TZ_ZONE_TABLE"`
+
+
+ # If there's more than one region, ask the user which one.
+ case $regions in
+ *"$newline"*)
+ echo >&2 'Please select one of the following' \
+ 'time zone regions.'
+ doselect $regions
+ region=$select_result;;
+ *)
+ region=$regions
+ esac
+
+ # Determine TZ from country and region.
+ TZ=`$AWK \
+ -v country="$country" \
+ -v region="$region" \
+ -v TZ_COUNTRY_TABLE="$TZ_COUNTRY_TABLE" \
+ '
+ BEGIN {
+ FS = "\t"
+ cc = country
+ while (getline <TZ_COUNTRY_TABLE) {
+ if ($0 !~ /^#/ && country == $2) {
+ cc = $1
+ break
+ }
+ }
+ }
+ /^#/ { next }
+ $1 ~ cc && $4 == region { print $3 }
+ ' <"$TZ_ZONE_TABLE"`
+ esac
+
+ # Make sure the corresponding zoneinfo file exists.
+ TZ_for_date=$TZDIR/$TZ
+ <"$TZ_for_date" || {
+ say >&2 "$0: time zone files are not set up correctly"
+ exit 1
+ }
+ esac
+
+
+ # Use the proposed TZ to output the current date relative to UTC.
+ # Loop until they agree in seconds.
+ # Give up after 8 unsuccessful tries.
+
+ extra_info=
+ for i in 1 2 3 4 5 6 7 8
+ do
+ TZdate=`LANG=C TZ="$TZ_for_date" date`
+ UTdate=`LANG=C TZ=UTC0 date`
+ TZsec=`expr "$TZdate" : '.*:\([0-5][0-9]\)'`
+ UTsec=`expr "$UTdate" : '.*:\([0-5][0-9]\)'`
+ case $TZsec in
+ $UTsec)
+ extra_info="
+Selected time is now: $TZdate.
+Universal Time is now: $UTdate."
+ break
+ esac
+ done
+
+
+ # Output TZ info and ask the user to confirm.
+
+ echo >&2 ""
+ echo >&2 "The following information has been given:"
+ echo >&2 ""
+ case $country%$region%$coord in
+ ?*%?*%) say >&2 " $country$newline $region";;
+ ?*%%) say >&2 " $country";;
+ %?*%?*) say >&2 " coord $coord$newline $region";;
+ %%?*) say >&2 " coord $coord";;
+ *) say >&2 " TZ='$TZ'"
+ esac
+ say >&2 ""
+ say >&2 "Therefore TZ='$TZ' will be used.$extra_info"
+ say >&2 "Is the above information OK?"
+
+ doselect Yes No
+ ok=$select_result
+ case $ok in
+ Yes) break
+ esac
+do coord=
+done
+
+case $SHELL in
+*csh) file=.login line="setenv TZ '$TZ'";;
+*) file=.profile line="TZ='$TZ'; export TZ"
+esac
+
+test -t 1 && say >&2 "
+You can make this change permanent for yourself by appending the line
+ $line
+to the file '$file' in your home directory; then log out and log in again.
+
+Here is that TZ value again, this time on standard output so that you
+can use the $0 command in shell scripts:"
+
+say "$TZ"
Deleted: vendor/tzcode/2016f/workman.sh
===================================================================
--- vendor/tzcode/dist/workman.sh 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/workman.sh 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,31 +0,0 @@
-#! /bin/sh
-
-# <pre>
-# This file is in the public domain, so clarified as of
-# 2009-05-17 by Arthur David Olson.
-
-# Tell groff not to emit SGR escape sequences (ANSI color escapes).
-GROFF_NO_SGR=1
-export GROFF_NO_SGR
-
-echo ".am TH
-.hy 0
-.na
-..
-.rm }H
-.rm }F" | nroff -man - ${1+"$@"} | perl -ne '
- chomp;
- s/.\010//g;
- s/\s*$//;
- if (/^$/) {
- $sawblank = 1;
- next;
- } else {
- if ($sawblank && $didprint) {
- print "\n";
- $sawblank = 0;
- }
- print "$_\n";
- $didprint = 1;
- }
-'
Copied: vendor/tzcode/2016f/workman.sh (from rev 7736, vendor/tzcode/dist/workman.sh)
===================================================================
--- vendor/tzcode/2016f/workman.sh (rev 0)
+++ vendor/tzcode/2016f/workman.sh 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,32 @@
+#! /bin/sh
+
+# This file is in the public domain, so clarified as of
+# 2009-05-17 by Arthur David Olson.
+
+# Tell groff not to emit SGR escape sequences (ANSI color escapes).
+GROFF_NO_SGR=1
+export GROFF_NO_SGR
+
+echo ".am TH
+.hy 0
+.na
+..
+.rm }H
+.rm }F" | nroff -man - ${1+"$@"} | perl -ne '
+ binmode STDIN, '\'':encoding(utf8)'\'';
+ binmode STDOUT, '\'':encoding(utf8)'\'';
+ chomp;
+ s/.\010//g;
+ s/\s*$//;
+ if (/^$/) {
+ $sawblank = 1;
+ next;
+ } else {
+ if ($sawblank && $didprint) {
+ print "\n";
+ $sawblank = 0;
+ }
+ print "$_\n";
+ $didprint = 1;
+ }
+'
Deleted: vendor/tzcode/2016f/zdump.8
===================================================================
--- vendor/tzcode/dist/zdump.8 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zdump.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,58 +0,0 @@
-.TH ZDUMP 8
-.SH NAME
-zdump \- time zone dumper
-.SH SYNOPSIS
-.B zdump
-[
-.B \-\-version
-]
-[
-.B \-v
-] [
-.B \-c
-[loyear,]hiyear ] [ zonename ... ]
-.SH DESCRIPTION
-.I Zdump
-prints the current time in each
-.I zonename
-named on the command line.
-.PP
-These options are available:
-.TP
-.BI "\-\-version"
-Output version information and exit.
-.TP
-.B \-v
-For each
-.I zonename
-on the command line,
-print the time at the lowest possible time value,
-the time one day after the lowest possible time value,
-the times both one second before and exactly at
-each detected time discontinuity,
-the time at one day less than the highest possible time value,
-and the time at the highest possible time value,
-Each line ends with
-.B isdst=1
-if the given time is Daylight Saving Time or
-.B isdst=0
-otherwise.
-.TP
-.BI "\-c " [loyear,]hiyear
-Cut off verbose output near the start of the given year(s).
-By default,
-the program cuts off verbose output near the starts of the years -500 and 2500.
-.SH LIMITATIONS
-The
-.B \-v
-option may not be used on systems with floating-point time_t values
-that are neither float nor double.
-.PP
-Time discontinuities are found by sampling the results returned by localtime
-at twelve-hour intervals.
-This works in all real-world cases;
-one can construct artificial time zones for which this fails.
-.SH "SEE ALSO"
-newctime(3), tzfile(5), zic(8)
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/zdump.8 (from rev 7736, vendor/tzcode/dist/zdump.8)
===================================================================
--- vendor/tzcode/2016f/zdump.8 (rev 0)
+++ vendor/tzcode/2016f/zdump.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,92 @@
+.TH ZDUMP 8
+.SH NAME
+zdump \- time zone dumper
+.SH SYNOPSIS
+.B zdump
+[
+.I option
+\&... ] [
+.I zonename
+\&... ]
+.SH DESCRIPTION
+.ie \n(.g .ds - \f(CW-\fP
+.el ds - \-
+.I Zdump
+prints the current time in each
+.I zonename
+named on the command line.
+.PP
+These options are available:
+.TP
+.BI "\*-\*-version"
+Output version information and exit.
+.TP
+.B \*-v
+For each
+.I zonename
+on the command line,
+print the time at the lowest possible time value,
+the time one day after the lowest possible time value,
+the times both one second before and exactly at
+each detected time discontinuity,
+the time at one day less than the highest possible time value,
+and the time at the highest possible time value.
+Each line is followed by
+.BI isdst= D
+where
+.I D
+is positive, zero, or negative depending on whether
+the given time is daylight saving time, standard time,
+or an unknown time type, respectively.
+Each line is also followed by
+.BI gmtoff= N
+if the given local time is known to be
+.I N
+seconds east of Greenwich.
+.TP
+.B \*-V
+Like
+.BR \*-v ,
+except omit the times relative to the extreme time values.
+This generates output that is easier to compare to that of
+implementations with different time representations.
+.TP
+.BI "\*-c " [loyear,]hiyear
+Cut off verbose output at the given year(s).
+Cutoff times are computed using the proleptic Gregorian calendar with year 0
+and with Universal Time (UT) ignoring leap seconds.
+The lower bound is exclusive and the upper is inclusive; for example, a
+.I loyear
+of 1970 excludes a transition occurring at 1970-01-01 00:00:00 UTC but a
+.I hiyear
+of 1970 includes the transition.
+The default cutoff is
+.BR \*-500,2500 .
+.TP
+.BI "\*-t " [lotime,]hitime
+Cut off verbose output at the given time(s),
+given in decimal seconds since 1970-01-01 00:00:00
+Coordinated Universal Time (UTC).
+The
+.I zonename
+determines whether the count includes leap seconds.
+As with
+.BR \*-c ,
+the cutoff's lower bound is exclusive and its upper bound is inclusive.
+.SH LIMITATIONS
+Time discontinuities are found by sampling the results returned by localtime
+at twelve-hour intervals.
+This works in all real-world cases;
+one can construct artificial time zones for which this fails.
+.PP
+In the output, "UT" denotes the value returned by
+.IR gmtime (3),
+which uses UTC for modern time stamps and some other UT flavor for
+time stamps that predate the introduction of UTC.
+No attempt is currently made to have the output use "UTC" for newer
+and "UT" for older time stamps,
+partly because the exact date of the introduction of UTC is problematic.
+.SH "SEE ALSO"
+newctime(3), tzfile(5), zic(8)
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/zdump.8.txt
===================================================================
--- vendor/tzcode/dist/zdump.8.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zdump.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,42 +0,0 @@
-ZDUMP(8) ZDUMP(8)
-
-NAME
- zdump - time zone dumper
-
-SYNOPSIS
- zdump [ --version ] [ -v ] [ -c [loyear,]hiyear ] [ zonename ... ]
-
-DESCRIPTION
- Zdump prints the current time in each zonename named on the command
- line.
-
- These options are available:
-
- --version
- Output version information and exit.
-
- -v For each zonename on the command line, print the time at the
- lowest possible time value, the time one day after the lowest
- possible time value, the times both one second before and
- exactly at each detected time discontinuity, the time at one day
- less than the highest possible time value, and the time at the
- highest possible time value, Each line ends with isdst=1 if the
- given time is Daylight Saving Time or isdst=0 otherwise.
-
- -c [loyear,]hiyear
- Cut off verbose output near the start of the given year(s). By
- default, the program cuts off verbose output near the starts of
- the years -500 and 2500.
-
-LIMITATIONS
- The -v option may not be used on systems with floating-point time_t
- values that are neither float nor double.
-
- Time discontinuities are found by sampling the results returned by
- localtime at twelve-hour intervals. This works in all real-world
- cases; one can construct artificial time zones for which this fails.
-
-SEE ALSO
- newctime(3), tzfile(5), zic(8)
-
- ZDUMP(8)
Copied: vendor/tzcode/2016f/zdump.8.txt (from rev 7736, vendor/tzcode/dist/zdump.8.txt)
===================================================================
--- vendor/tzcode/2016f/zdump.8.txt (rev 0)
+++ vendor/tzcode/2016f/zdump.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,65 @@
+ZDUMP(8) System Manager's Manual ZDUMP(8)
+
+NAME
+ zdump - time zone dumper
+
+SYNOPSIS
+ zdump [ option ... ] [ zonename ... ]
+
+DESCRIPTION
+ Zdump prints the current time in each zonename named on the command
+ line.
+
+ These options are available:
+
+ --version
+ Output version information and exit.
+
+ -v For each zonename on the command line, print the time at the
+ lowest possible time value, the time one day after the lowest
+ possible time value, the times both one second before and
+ exactly at each detected time discontinuity, the time at one day
+ less than the highest possible time value, and the time at the
+ highest possible time value. Each line is followed by isdst=D
+ where D is positive, zero, or negative depending on whether the
+ given time is daylight saving time, standard time, or an unknown
+ time type, respectively. Each line is also followed by gmtoff=N
+ if the given local time is known to be N seconds east of
+ Greenwich.
+
+ -V Like -v, except omit the times relative to the extreme time
+ values. This generates output that is easier to compare to that
+ of implementations with different time representations.
+
+ -c [loyear,]hiyear
+ Cut off verbose output at the given year(s). Cutoff times are
+ computed using the proleptic Gregorian calendar with year 0 and
+ with Universal Time (UT) ignoring leap seconds. The lower bound
+ is exclusive and the upper is inclusive; for example, a loyear
+ of 1970 excludes a transition occurring at 1970-01-01 00:00:00
+ UTC but a hiyear of 1970 includes the transition. The default
+ cutoff is -500,2500.
+
+ -t [lotime,]hitime
+ Cut off verbose output at the given time(s), given in decimal
+ seconds since 1970-01-01 00:00:00 Coordinated Universal Time
+ (UTC). The zonename determines whether the count includes leap
+ seconds. As with -c, the cutoff's lower bound is exclusive and
+ its upper bound is inclusive.
+
+LIMITATIONS
+ Time discontinuities are found by sampling the results returned by
+ localtime at twelve-hour intervals. This works in all real-world
+ cases; one can construct artificial time zones for which this fails.
+
+ In the output, "UT" denotes the value returned by gmtime(3), which uses
+ UTC for modern time stamps and some other UT flavor for time stamps
+ that predate the introduction of UTC. No attempt is currently made to
+ have the output use "UTC" for newer and "UT" for older time stamps,
+ partly because the exact date of the introduction of UTC is
+ problematic.
+
+SEE ALSO
+ newctime(3), tzfile(5), zic(8)
+
+ ZDUMP(8)
Deleted: vendor/tzcode/2016f/zdump.c
===================================================================
--- vendor/tzcode/dist/zdump.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zdump.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,667 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 2009-05-17 by Arthur David Olson.
-*/
-
-#include "version.h"
-
-/*
-** This code has been made independent of the rest of the time
-** conversion package to increase confidence in the verification it provides.
-** You can use this code to help in verifying other implementations.
-*/
-
-#include "stdio.h" /* for stdout, stderr, perror */
-#include "string.h" /* for strcpy */
-#include "sys/types.h" /* for time_t */
-#include "time.h" /* for struct tm */
-#include "stdlib.h" /* for exit, malloc, atoi */
-#include "float.h" /* for FLT_MAX and DBL_MAX */
-#include "limits.h" /* for CHAR_BIT, LLONG_MAX */
-#include "ctype.h" /* for isalpha et al. */
-#ifndef isascii
-#define isascii(x) 1
-#endif /* !defined isascii */
-
-#ifndef ZDUMP_LO_YEAR
-#define ZDUMP_LO_YEAR (-500)
-#endif /* !defined ZDUMP_LO_YEAR */
-
-#ifndef ZDUMP_HI_YEAR
-#define ZDUMP_HI_YEAR 2500
-#endif /* !defined ZDUMP_HI_YEAR */
-
-#ifndef MAX_STRING_LENGTH
-#define MAX_STRING_LENGTH 1024
-#endif /* !defined MAX_STRING_LENGTH */
-
-#ifndef TRUE
-#define TRUE 1
-#endif /* !defined TRUE */
-
-#ifndef FALSE
-#define FALSE 0
-#endif /* !defined FALSE */
-
-#ifndef EXIT_SUCCESS
-#define EXIT_SUCCESS 0
-#endif /* !defined EXIT_SUCCESS */
-
-#ifndef EXIT_FAILURE
-#define EXIT_FAILURE 1
-#endif /* !defined EXIT_FAILURE */
-
-#ifndef SECSPERMIN
-#define SECSPERMIN 60
-#endif /* !defined SECSPERMIN */
-
-#ifndef MINSPERHOUR
-#define MINSPERHOUR 60
-#endif /* !defined MINSPERHOUR */
-
-#ifndef SECSPERHOUR
-#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
-#endif /* !defined SECSPERHOUR */
-
-#ifndef HOURSPERDAY
-#define HOURSPERDAY 24
-#endif /* !defined HOURSPERDAY */
-
-#ifndef EPOCH_YEAR
-#define EPOCH_YEAR 1970
-#endif /* !defined EPOCH_YEAR */
-
-#ifndef TM_YEAR_BASE
-#define TM_YEAR_BASE 1900
-#endif /* !defined TM_YEAR_BASE */
-
-#ifndef DAYSPERNYEAR
-#define DAYSPERNYEAR 365
-#endif /* !defined DAYSPERNYEAR */
-
-#ifndef isleap
-#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
-#endif /* !defined isleap */
-
-#ifndef isleap_sum
-/*
-** See tzfile.h for details on isleap_sum.
-*/
-#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
-#endif /* !defined isleap_sum */
-
-#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
-#define SECSPERNYEAR (SECSPERDAY * DAYSPERNYEAR)
-#define SECSPERLYEAR (SECSPERNYEAR + SECSPERDAY)
-
-#ifndef HAVE_GETTEXT
-#define HAVE_GETTEXT 0
-#endif
-#if HAVE_GETTEXT
-#include "locale.h" /* for setlocale */
-#include "libintl.h"
-#endif /* HAVE_GETTEXT */
-
-#ifndef GNUC_or_lint
-#ifdef lint
-#define GNUC_or_lint
-#else /* !defined lint */
-#ifdef __GNUC__
-#define GNUC_or_lint
-#endif /* defined __GNUC__ */
-#endif /* !defined lint */
-#endif /* !defined GNUC_or_lint */
-
-#ifndef INITIALIZE
-#ifdef GNUC_or_lint
-#define INITIALIZE(x) ((x) = 0)
-#else /* !defined GNUC_or_lint */
-#define INITIALIZE(x)
-#endif /* !defined GNUC_or_lint */
-#endif /* !defined INITIALIZE */
-
-#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
-# define ATTRIBUTE_PURE __attribute__ ((__pure__))
-#else
-# define ATTRIBUTE_PURE /* empty */
-#endif
-
-/*
-** For the benefit of GNU folk...
-** `_(MSGID)' uses the current locale's message library string for MSGID.
-** The default is to use gettext if available, and use MSGID otherwise.
-*/
-
-#ifndef _
-#if HAVE_GETTEXT
-#define _(msgid) gettext(msgid)
-#else /* !HAVE_GETTEXT */
-#define _(msgid) msgid
-#endif /* !HAVE_GETTEXT */
-#endif /* !defined _ */
-
-#ifndef TZ_DOMAIN
-#define TZ_DOMAIN "tz"
-#endif /* !defined TZ_DOMAIN */
-
-extern char ** environ;
-extern int getopt(int argc, char * const argv[],
- const char * options);
-extern char * optarg;
-extern int optind;
-extern char * tzname[2];
-
-/* The minimum and maximum finite time values. Shift 'long long' or
- 'long' instead of 'time_t'; this avoids compile-time errors when
- time_t is floating-point. In practice, 'long long' is wide enough. */
-static time_t const absolute_min_time =
- ((time_t) 0.5 == 0.5
- ? (sizeof (time_t) == sizeof (float) ? (time_t) -FLT_MAX
- : sizeof (time_t) == sizeof (double) ? (time_t) -DBL_MAX
- : sizeof (time_t) == sizeof (long double) ? (time_t) -LDBL_MAX
- : 0)
- : (time_t) -1 < 0
-#ifdef LLONG_MAX
- ? (time_t) ((long long) -1 << (CHAR_BIT * sizeof (time_t) - 1))
-#else
- ? (time_t) ((long) -1 << (CHAR_BIT * sizeof (time_t) - 1))
-#endif
- : 0);
-static time_t const absolute_max_time =
- ((time_t) 0.5 == 0.5
- ? (sizeof (time_t) == sizeof (float) ? (time_t) FLT_MAX
- : sizeof (time_t) == sizeof (double) ? (time_t) DBL_MAX
- : sizeof (time_t) == sizeof (long double) ? (time_t) LDBL_MAX
- : -1)
- : (time_t) -1 < 0
-#ifdef LLONG_MAX
- ? (time_t) (- (~ 0 < 0) - ((long long) -1 << (CHAR_BIT * sizeof (time_t) - 1)))
-#else
- ? (time_t) (- (~ 0 < 0) - ((long) -1 << (CHAR_BIT * sizeof (time_t) - 1)))
-#endif
- : (time_t) -1);
-static size_t longest;
-static char * progname;
-static int warned;
-
-static char * abbr(struct tm * tmp);
-static void abbrok(const char * abbrp, const char * zone);
-static long delta(struct tm * newp, struct tm * oldp) ATTRIBUTE_PURE;
-static void dumptime(const struct tm * tmp);
-static time_t hunt(char * name, time_t lot, time_t hit);
-static void checkabsolutes(void);
-static void show(char * zone, time_t t, int v);
-static const char * tformat(void);
-static time_t yeartot(long y) ATTRIBUTE_PURE;
-
-#ifndef TYPECHECK
-#define my_localtime localtime
-#else /* !defined TYPECHECK */
-static struct tm *
-my_localtime(time_t *tp)
-{
- register struct tm * tmp;
-
- tmp = localtime(tp);
- if (tp != NULL && tmp != NULL) {
- struct tm tm;
- register time_t t;
-
- tm = *tmp;
- t = mktime(&tm);
- if (t - *tp >= 1 || *tp - t >= 1) {
- (void) fflush(stdout);
- (void) fprintf(stderr, "\n%s: ", progname);
- (void) fprintf(stderr, tformat(), *tp);
- (void) fprintf(stderr, " ->");
- (void) fprintf(stderr, " year=%d", tmp->tm_year);
- (void) fprintf(stderr, " mon=%d", tmp->tm_mon);
- (void) fprintf(stderr, " mday=%d", tmp->tm_mday);
- (void) fprintf(stderr, " hour=%d", tmp->tm_hour);
- (void) fprintf(stderr, " min=%d", tmp->tm_min);
- (void) fprintf(stderr, " sec=%d", tmp->tm_sec);
- (void) fprintf(stderr, " isdst=%d", tmp->tm_isdst);
- (void) fprintf(stderr, " -> ");
- (void) fprintf(stderr, tformat(), t);
- (void) fprintf(stderr, "\n");
- }
- }
- return tmp;
-}
-#endif /* !defined TYPECHECK */
-
-static void
-abbrok(const char *const abbrp, const char *const zone)
-{
- register const char * cp;
- register const char * wp;
-
- if (warned)
- return;
- cp = abbrp;
- wp = NULL;
- while (isascii((unsigned char) *cp) && isalpha((unsigned char) *cp))
- ++cp;
- if (cp - abbrp == 0)
- wp = _("lacks alphabetic at start");
- else if (cp - abbrp < 3)
- wp = _("has fewer than 3 alphabetics");
- else if (cp - abbrp > 6)
- wp = _("has more than 6 alphabetics");
- if (wp == NULL && (*cp == '+' || *cp == '-')) {
- ++cp;
- if (isascii((unsigned char) *cp) &&
- isdigit((unsigned char) *cp))
- if (*cp++ == '1' && *cp >= '0' && *cp <= '4')
- ++cp;
- if (*cp != '\0')
- wp = _("differs from POSIX standard");
- }
- if (wp == NULL)
- return;
- (void) fflush(stdout);
- (void) fprintf(stderr,
- _("%s: warning: zone \"%s\" abbreviation \"%s\" %s\n"),
- progname, zone, abbrp, wp);
- warned = TRUE;
-}
-
-static void
-usage(FILE * const stream, const int status)
-{
- (void) fprintf(stream,
-_("%s: usage is %s [ --version ] [ --help ] [ -v ] [ -c [loyear,]hiyear ] zonename ...\n\
-\n\
-Report bugs to tz at iana.org.\n"),
- progname, progname);
- exit(status);
-}
-
-int
-main(int argc, char *argv[])
-{
- register int i;
- register int c;
- register int vflag;
- register char * cutarg;
- register long cutloyear = ZDUMP_LO_YEAR;
- register long cuthiyear = ZDUMP_HI_YEAR;
- register time_t cutlotime;
- register time_t cuthitime;
- register char ** fakeenv;
- time_t now;
- time_t t;
- time_t newt;
- struct tm tm;
- struct tm newtm;
- register struct tm * tmp;
- register struct tm * newtmp;
-
- INITIALIZE(cutlotime);
- INITIALIZE(cuthitime);
-#if HAVE_GETTEXT
- (void) setlocale(LC_ALL, "");
-#ifdef TZ_DOMAINDIR
- (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
-#endif /* defined TEXTDOMAINDIR */
- (void) textdomain(TZ_DOMAIN);
-#endif /* HAVE_GETTEXT */
- progname = argv[0];
- for (i = 1; i < argc; ++i)
- if (strcmp(argv[i], "--version") == 0) {
- (void) printf("zdump %s%s\n", PKGVERSION, TZVERSION);
- exit(EXIT_SUCCESS);
- } else if (strcmp(argv[i], "--help") == 0) {
- usage(stdout, EXIT_SUCCESS);
- }
- vflag = 0;
- cutarg = NULL;
- while ((c = getopt(argc, argv, "c:v")) == 'c' || c == 'v')
- if (c == 'v')
- vflag = 1;
- else cutarg = optarg;
- if ((c != EOF && c != -1) ||
- (optind == argc - 1 && strcmp(argv[optind], "=") == 0)) {
- usage(stderr, EXIT_FAILURE);
- }
- if (vflag) {
- if (cutarg != NULL) {
- long lo;
- long hi;
- char dummy;
-
- if (sscanf(cutarg, "%ld%c", &hi, &dummy) == 1) {
- cuthiyear = hi;
- } else if (sscanf(cutarg, "%ld,%ld%c",
- &lo, &hi, &dummy) == 2) {
- cutloyear = lo;
- cuthiyear = hi;
- } else {
-(void) fprintf(stderr, _("%s: wild -c argument %s\n"),
- progname, cutarg);
- exit(EXIT_FAILURE);
- }
- }
- checkabsolutes();
- cutlotime = yeartot(cutloyear);
- cuthitime = yeartot(cuthiyear);
- }
- (void) time(&now);
- longest = 0;
- for (i = optind; i < argc; ++i)
- if (strlen(argv[i]) > longest)
- longest = strlen(argv[i]);
- {
- register int from;
- register int to;
-
- for (i = 0; environ[i] != NULL; ++i)
- continue;
- fakeenv = malloc((i + 2) * sizeof *fakeenv);
- if (fakeenv == NULL
- || (fakeenv[0] = malloc(longest + 4)) == NULL) {
- (void) perror(progname);
- exit(EXIT_FAILURE);
- }
- to = 0;
- (void) strcpy(fakeenv[to++], "TZ=");
- for (from = 0; environ[from] != NULL; ++from)
- if (strncmp(environ[from], "TZ=", 3) != 0)
- fakeenv[to++] = environ[from];
- fakeenv[to] = NULL;
- environ = fakeenv;
- }
- for (i = optind; i < argc; ++i) {
- static char buf[MAX_STRING_LENGTH];
-
- (void) strcpy(&fakeenv[0][3], argv[i]);
- if (!vflag) {
- show(argv[i], now, FALSE);
- continue;
- }
- warned = FALSE;
- t = absolute_min_time;
- show(argv[i], t, TRUE);
- t += SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- if (t < cutlotime)
- t = cutlotime;
- tmp = my_localtime(&t);
- if (tmp != NULL) {
- tm = *tmp;
- (void) strncpy(buf, abbr(&tm), (sizeof buf) - 1);
- }
- for ( ; ; ) {
- if (t >= cuthitime || t >= cuthitime - SECSPERHOUR * 12)
- break;
- newt = t + SECSPERHOUR * 12;
- newtmp = localtime(&newt);
- if (newtmp != NULL)
- newtm = *newtmp;
- if ((tmp == NULL || newtmp == NULL) ? (tmp != newtmp) :
- (delta(&newtm, &tm) != (newt - t) ||
- newtm.tm_isdst != tm.tm_isdst ||
- strcmp(abbr(&newtm), buf) != 0)) {
- newt = hunt(argv[i], t, newt);
- newtmp = localtime(&newt);
- if (newtmp != NULL) {
- newtm = *newtmp;
- (void) strncpy(buf,
- abbr(&newtm),
- (sizeof buf) - 1);
- }
- }
- t = newt;
- tm = newtm;
- tmp = newtmp;
- }
- t = absolute_max_time;
- t -= SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- t += SECSPERHOUR * HOURSPERDAY;
- show(argv[i], t, TRUE);
- }
- if (fflush(stdout) || ferror(stdout)) {
- (void) fprintf(stderr, "%s: ", progname);
- (void) perror(_("Error writing to standard output"));
- exit(EXIT_FAILURE);
- }
- exit(EXIT_SUCCESS);
- /* If exit fails to exit... */
- return EXIT_FAILURE;
-}
-
-static void
-checkabsolutes(void)
-{
- if (absolute_max_time < absolute_min_time) {
- (void) fprintf(stderr,
-_("%s: use of -v on system with floating time_t other than float or double\n"),
- progname);
- exit(EXIT_FAILURE);
- }
-}
-
-static time_t
-yeartot(const long y)
-{
- register long myy;
- register long seconds;
- register time_t t;
-
- myy = EPOCH_YEAR;
- t = 0;
- while (myy != y) {
- if (myy < y) {
- seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
- ++myy;
- if (t > absolute_max_time - seconds) {
- t = absolute_max_time;
- break;
- }
- t += seconds;
- } else {
- --myy;
- seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
- if (t < absolute_min_time + seconds) {
- t = absolute_min_time;
- break;
- }
- t -= seconds;
- }
- }
- return t;
-}
-
-static time_t
-hunt(char *name, time_t lot, time_t hit)
-{
- time_t t;
- long diff;
- struct tm lotm;
- register struct tm * lotmp;
- struct tm tm;
- register struct tm * tmp;
- char loab[MAX_STRING_LENGTH];
-
- lotmp = my_localtime(&lot);
- if (lotmp != NULL) {
- lotm = *lotmp;
- (void) strncpy(loab, abbr(&lotm), (sizeof loab) - 1);
- }
- for ( ; ; ) {
- diff = (long) (hit - lot);
- if (diff < 2)
- break;
- t = lot;
- t += diff / 2;
- if (t <= lot)
- ++t;
- else if (t >= hit)
- --t;
- tmp = my_localtime(&t);
- if (tmp != NULL)
- tm = *tmp;
- if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) :
- (delta(&tm, &lotm) == (t - lot) &&
- tm.tm_isdst == lotm.tm_isdst &&
- strcmp(abbr(&tm), loab) == 0)) {
- lot = t;
- lotm = tm;
- lotmp = tmp;
- } else hit = t;
- }
- show(name, lot, TRUE);
- show(name, hit, TRUE);
- return hit;
-}
-
-/*
-** Thanks to Paul Eggert for logic used in delta.
-*/
-
-static long
-delta(struct tm * newp, struct tm *oldp)
-{
- register long result;
- register int tmy;
-
- if (newp->tm_year < oldp->tm_year)
- return -delta(oldp, newp);
- result = 0;
- for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy)
- result += DAYSPERNYEAR + isleap_sum(tmy, TM_YEAR_BASE);
- result += newp->tm_yday - oldp->tm_yday;
- result *= HOURSPERDAY;
- result += newp->tm_hour - oldp->tm_hour;
- result *= MINSPERHOUR;
- result += newp->tm_min - oldp->tm_min;
- result *= SECSPERMIN;
- result += newp->tm_sec - oldp->tm_sec;
- return result;
-}
-
-static void
-show(char *zone, time_t t, int v)
-{
- register struct tm * tmp;
-
- (void) printf("%-*s ", (int) longest, zone);
- if (v) {
- tmp = gmtime(&t);
- if (tmp == NULL) {
- (void) printf(tformat(), t);
- } else {
- dumptime(tmp);
- (void) printf(" UTC");
- }
- (void) printf(" = ");
- }
- tmp = my_localtime(&t);
- dumptime(tmp);
- if (tmp != NULL) {
- if (*abbr(tmp) != '\0')
- (void) printf(" %s", abbr(tmp));
- if (v) {
- (void) printf(" isdst=%d", tmp->tm_isdst);
-#ifdef TM_GMTOFF
- (void) printf(" gmtoff=%ld", tmp->TM_GMTOFF);
-#endif /* defined TM_GMTOFF */
- }
- }
- (void) printf("\n");
- if (tmp != NULL && *abbr(tmp) != '\0')
- abbrok(abbr(tmp), zone);
-}
-
-static char *
-abbr(struct tm *tmp)
-{
- register char * result;
- static char nada;
-
- if (tmp->tm_isdst != 0 && tmp->tm_isdst != 1)
- return &nada;
- result = tzname[tmp->tm_isdst];
- return (result == NULL) ? &nada : result;
-}
-
-/*
-** The code below can fail on certain theoretical systems;
-** it works on all known real-world systems as of 2004-12-30.
-*/
-
-static const char *
-tformat(void)
-{
- if (0.5 == (time_t) 0.5) { /* floating */
- if (sizeof (time_t) > sizeof (double))
- return "%Lg";
- return "%g";
- }
- if (0 > (time_t) -1) { /* signed */
- if (sizeof (time_t) > sizeof (long))
- return "%lld";
- if (sizeof (time_t) > sizeof (int))
- return "%ld";
- return "%d";
- }
- if (sizeof (time_t) > sizeof (unsigned long))
- return "%llu";
- if (sizeof (time_t) > sizeof (unsigned int))
- return "%lu";
- return "%u";
-}
-
-static void
-dumptime(register const struct tm *timeptr)
-{
- static const char wday_name[][3] = {
- "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
- };
- static const char mon_name[][3] = {
- "Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
- };
- register const char * wn;
- register const char * mn;
- register int lead;
- register int trail;
-
- if (timeptr == NULL) {
- (void) printf("NULL");
- return;
- }
- /*
- ** The packaged versions of localtime and gmtime never put out-of-range
- ** values in tm_wday or tm_mon, but since this code might be compiled
- ** with other (perhaps experimental) versions, paranoia is in order.
- */
- if (timeptr->tm_wday < 0 || timeptr->tm_wday >=
- (int) (sizeof wday_name / sizeof wday_name[0]))
- wn = "???";
- else wn = wday_name[timeptr->tm_wday];
- if (timeptr->tm_mon < 0 || timeptr->tm_mon >=
- (int) (sizeof mon_name / sizeof mon_name[0]))
- mn = "???";
- else mn = mon_name[timeptr->tm_mon];
- (void) printf("%.3s %.3s%3d %.2d:%.2d:%.2d ",
- wn, mn,
- timeptr->tm_mday, timeptr->tm_hour,
- timeptr->tm_min, timeptr->tm_sec);
-#define DIVISOR 10
- trail = timeptr->tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
- lead = timeptr->tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR +
- trail / DIVISOR;
- trail %= DIVISOR;
- if (trail < 0 && lead > 0) {
- trail += DIVISOR;
- --lead;
- } else if (lead < 0 && trail > 0) {
- trail -= DIVISOR;
- ++lead;
- }
- if (lead == 0)
- (void) printf("%d", trail);
- else (void) printf("%d%d", lead, ((trail < 0) ? -trail : trail));
-}
Copied: vendor/tzcode/2016f/zdump.c (from rev 7736, vendor/tzcode/dist/zdump.c)
===================================================================
--- vendor/tzcode/2016f/zdump.c (rev 0)
+++ vendor/tzcode/2016f/zdump.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,1014 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2009-05-17 by Arthur David Olson.
+*/
+
+#include "version.h"
+
+/*
+** This code has been made independent of the rest of the time
+** conversion package to increase confidence in the verification it provides.
+** You can use this code to help in verifying other implementations.
+** To do this, compile with -DUSE_LTZ=0 and link without the tz library.
+*/
+
+#ifndef NETBSD_INSPIRED
+# define NETBSD_INSPIRED 1
+#endif
+#ifndef USE_LTZ
+# define USE_LTZ 1
+#endif
+
+#if USE_LTZ
+# include "private.h"
+#endif
+
+/* Enable tm_gmtoff and tm_zone on GNUish systems. */
+#define _GNU_SOURCE 1
+/* Enable strtoimax on Solaris 10. */
+#define __EXTENSIONS__ 1
+
+#include "stdio.h" /* for stdout, stderr, perror */
+#include "string.h" /* for strcpy */
+#include "sys/types.h" /* for time_t */
+#include "time.h" /* for struct tm */
+#include "stdlib.h" /* for exit, malloc, atoi */
+#include "limits.h" /* for CHAR_BIT, LLONG_MAX */
+#include <errno.h>
+
+/*
+** Substitutes for pre-C99 compilers.
+** Much of this section of code is stolen from private.h.
+*/
+
+#ifndef HAVE_STDINT_H
+# define HAVE_STDINT_H \
+ (199901 <= __STDC_VERSION__ \
+ || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \
+ || __CYGWIN__)
+#endif
+#if HAVE_STDINT_H
+# include "stdint.h"
+#endif
+#ifndef HAVE_INTTYPES_H
+# define HAVE_INTTYPES_H HAVE_STDINT_H
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+
+#ifndef INT_FAST32_MAX
+# if INT_MAX >> 31 == 0
+typedef long int_fast32_t;
+# else
+typedef int int_fast32_t;
+# endif
+#endif
+
+/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
+#if !defined LLONG_MAX && defined __LONG_LONG_MAX__
+# define LLONG_MAX __LONG_LONG_MAX__
+#endif
+
+#ifndef INTMAX_MAX
+# ifdef LLONG_MAX
+typedef long long intmax_t;
+# define strtoimax strtoll
+# define INTMAX_MAX LLONG_MAX
+# else
+typedef long intmax_t;
+# define strtoimax strtol
+# define INTMAX_MAX LONG_MAX
+# endif
+#endif
+
+#ifndef PRIdMAX
+# if INTMAX_MAX == LLONG_MAX
+# define PRIdMAX "lld"
+# else
+# define PRIdMAX "ld"
+# endif
+#endif
+
+/* Infer TM_ZONE on systems where this information is known, but suppress
+ guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */
+#if (defined __GLIBC__ \
+ || defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \
+ || (defined __APPLE__ && defined __MACH__))
+# if !defined TM_GMTOFF && !defined NO_TM_GMTOFF
+# define TM_GMTOFF tm_gmtoff
+# endif
+# if !defined TM_ZONE && !defined NO_TM_ZONE
+# define TM_ZONE tm_zone
+# endif
+#endif
+
+#ifndef HAVE_LOCALTIME_R
+# define HAVE_LOCALTIME_R 1
+#endif
+
+#ifndef HAVE_LOCALTIME_RZ
+# ifdef TM_ZONE
+# define HAVE_LOCALTIME_RZ (NETBSD_INSPIRED && USE_LTZ)
+# else
+# define HAVE_LOCALTIME_RZ 0
+# endif
+#endif
+
+#ifndef HAVE_TZSET
+# define HAVE_TZSET 1
+#endif
+
+#ifndef ZDUMP_LO_YEAR
+#define ZDUMP_LO_YEAR (-500)
+#endif /* !defined ZDUMP_LO_YEAR */
+
+#ifndef ZDUMP_HI_YEAR
+#define ZDUMP_HI_YEAR 2500
+#endif /* !defined ZDUMP_HI_YEAR */
+
+#ifndef MAX_STRING_LENGTH
+#define MAX_STRING_LENGTH 1024
+#endif /* !defined MAX_STRING_LENGTH */
+
+#if __STDC_VERSION__ < 199901
+# define true 1
+# define false 0
+# define bool int
+#else
+# include <stdbool.h>
+#endif
+
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#endif /* !defined EXIT_SUCCESS */
+
+#ifndef EXIT_FAILURE
+#define EXIT_FAILURE 1
+#endif /* !defined EXIT_FAILURE */
+
+#ifndef SECSPERMIN
+#define SECSPERMIN 60
+#endif /* !defined SECSPERMIN */
+
+#ifndef MINSPERHOUR
+#define MINSPERHOUR 60
+#endif /* !defined MINSPERHOUR */
+
+#ifndef SECSPERHOUR
+#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
+#endif /* !defined SECSPERHOUR */
+
+#ifndef HOURSPERDAY
+#define HOURSPERDAY 24
+#endif /* !defined HOURSPERDAY */
+
+#ifndef EPOCH_YEAR
+#define EPOCH_YEAR 1970
+#endif /* !defined EPOCH_YEAR */
+
+#ifndef TM_YEAR_BASE
+#define TM_YEAR_BASE 1900
+#endif /* !defined TM_YEAR_BASE */
+
+#ifndef DAYSPERNYEAR
+#define DAYSPERNYEAR 365
+#endif /* !defined DAYSPERNYEAR */
+
+#ifndef isleap
+#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
+#endif /* !defined isleap */
+
+#ifndef isleap_sum
+/*
+** See tzfile.h for details on isleap_sum.
+*/
+#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
+#endif /* !defined isleap_sum */
+
+#define SECSPERDAY ((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
+#define SECSPERNYEAR (SECSPERDAY * DAYSPERNYEAR)
+#define SECSPERLYEAR (SECSPERNYEAR + SECSPERDAY)
+#define SECSPER400YEARS (SECSPERNYEAR * (intmax_t) (300 + 3) \
+ + SECSPERLYEAR * (intmax_t) (100 - 3))
+
+/*
+** True if SECSPER400YEARS is known to be representable as an
+** intmax_t. It's OK that SECSPER400YEARS_FITS can in theory be false
+** even if SECSPER400YEARS is representable, because when that happens
+** the code merely runs a bit more slowly, and this slowness doesn't
+** occur on any practical platform.
+*/
+enum { SECSPER400YEARS_FITS = SECSPERLYEAR <= INTMAX_MAX / 400 };
+
+#ifndef HAVE_GETTEXT
+#define HAVE_GETTEXT 0
+#endif
+#if HAVE_GETTEXT
+#include "locale.h" /* for setlocale */
+#include "libintl.h"
+#endif /* HAVE_GETTEXT */
+
+#if 2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)
+# define ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define ATTRIBUTE_PURE /* empty */
+#endif
+
+/*
+** For the benefit of GNU folk...
+** '_(MSGID)' uses the current locale's message library string for MSGID.
+** The default is to use gettext if available, and use MSGID otherwise.
+*/
+
+#ifndef _
+#if HAVE_GETTEXT
+#define _(msgid) gettext(msgid)
+#else /* !HAVE_GETTEXT */
+#define _(msgid) msgid
+#endif /* !HAVE_GETTEXT */
+#endif /* !defined _ */
+
+#if !defined TZ_DOMAIN && defined HAVE_GETTEXT
+# define TZ_DOMAIN "tz"
+#endif
+
+#if ! HAVE_LOCALTIME_RZ
+# undef timezone_t
+# define timezone_t char **
+#endif
+
+#if !HAVE_POSIX_DECLS
+extern char ** environ;
+extern int getopt(int argc, char * const argv[],
+ const char * options);
+extern char * optarg;
+extern int optind;
+extern char * tzname[];
+#endif
+
+/* The minimum and maximum finite time values. */
+enum { atime_shift = CHAR_BIT * sizeof (time_t) - 2 };
+static time_t const absolute_min_time =
+ ((time_t) -1 < 0
+ ? (- ((time_t) ~ (time_t) 0 < 0)
+ - (((time_t) 1 << atime_shift) - 1 + ((time_t) 1 << atime_shift)))
+ : 0);
+static time_t const absolute_max_time =
+ ((time_t) -1 < 0
+ ? (((time_t) 1 << atime_shift) - 1 + ((time_t) 1 << atime_shift))
+ : -1);
+static int longest;
+static char * progname;
+static bool warned;
+static bool errout;
+
+static char const *abbr(struct tm const *);
+static intmax_t delta(struct tm *, struct tm *) ATTRIBUTE_PURE;
+static void dumptime(struct tm const *);
+static time_t hunt(timezone_t, char *, time_t, time_t);
+static void show(timezone_t, char *, time_t, bool);
+static const char *tformat(void);
+static time_t yeartot(intmax_t) ATTRIBUTE_PURE;
+
+/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
+#define is_digit(c) ((unsigned)(c) - '0' <= 9)
+
+/* Is A an alphabetic character in the C locale? */
+static bool
+is_alpha(char a)
+{
+ switch (a) {
+ default:
+ return false;
+ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
+ case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
+ case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
+ case 'V': case 'W': case 'X': case 'Y': case 'Z':
+ case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
+ case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
+ case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
+ case 'v': case 'w': case 'x': case 'y': case 'z':
+ return true;
+ }
+}
+
+/* Return A + B, exiting if the result would overflow. */
+static size_t
+sumsize(size_t a, size_t b)
+{
+ size_t sum = a + b;
+ if (sum < a) {
+ fprintf(stderr, "%s: size overflow\n", progname);
+ exit(EXIT_FAILURE);
+ }
+ return sum;
+}
+
+#if ! HAVE_TZSET
+# undef tzset
+# define tzset zdump_tzset
+static void tzset(void) { }
+#endif
+
+/* Assume gmtime_r works if localtime_r does.
+ A replacement localtime_r is defined below if needed. */
+#if ! HAVE_LOCALTIME_R
+
+# undef gmtime_r
+# define gmtime_r zdump_gmtime_r
+
+static struct tm *
+gmtime_r(time_t *tp, struct tm *tmp)
+{
+ struct tm *r = gmtime(tp);
+ if (r) {
+ *tmp = *r;
+ r = tmp;
+ }
+ return r;
+}
+
+#endif
+
+/* Platforms with TM_ZONE don't need tzname, so they can use the
+ faster localtime_rz or localtime_r if available. */
+
+#if defined TM_ZONE && HAVE_LOCALTIME_RZ
+# define USE_LOCALTIME_RZ true
+#else
+# define USE_LOCALTIME_RZ false
+#endif
+
+#if ! USE_LOCALTIME_RZ
+
+# if !defined TM_ZONE || ! HAVE_LOCALTIME_R || ! HAVE_TZSET
+# undef localtime_r
+# define localtime_r zdump_localtime_r
+static struct tm *
+localtime_r(time_t *tp, struct tm *tmp)
+{
+ struct tm *r = localtime(tp);
+ if (r) {
+ *tmp = *r;
+ r = tmp;
+ }
+ return r;
+}
+# endif
+
+# undef localtime_rz
+# define localtime_rz zdump_localtime_rz
+static struct tm *
+localtime_rz(timezone_t rz, time_t *tp, struct tm *tmp)
+{
+ return localtime_r(tp, tmp);
+}
+
+# ifdef TYPECHECK
+# undef mktime_z
+# define mktime_z zdump_mktime_z
+static time_t
+mktime_z(timezone_t tz, struct tm *tmp)
+{
+ return mktime(tmp);
+}
+# endif
+
+# undef tzalloc
+# undef tzfree
+# define tzalloc zdump_tzalloc
+# define tzfree zdump_tzfree
+
+static timezone_t
+tzalloc(char const *val)
+{
+ static char **fakeenv;
+ char **env = fakeenv;
+ char *env0;
+ if (! env) {
+ char **e = environ;
+ int to;
+
+ while (*e++)
+ continue;
+ env = malloc(sumsize(sizeof *environ,
+ (e - environ) * sizeof *environ));
+ if (! env) {
+ perror(progname);
+ exit(EXIT_FAILURE);
+ }
+ to = 1;
+ for (e = environ; (env[to] = *e); e++)
+ to += strncmp(*e, "TZ=", 3) != 0;
+ }
+ env0 = malloc(sumsize(sizeof "TZ=", strlen(val)));
+ if (! env0) {
+ perror(progname);
+ exit(EXIT_FAILURE);
+ }
+ env[0] = strcat(strcpy(env0, "TZ="), val);
+ environ = fakeenv = env;
+ tzset();
+ return env;
+}
+
+static void
+tzfree(timezone_t env)
+{
+ environ = env + 1;
+ free(env[0]);
+}
+#endif /* ! USE_LOCALTIME_RZ */
+
+/* A UTC time zone, and its initializer. */
+static timezone_t gmtz;
+static void
+gmtzinit(void)
+{
+ if (USE_LOCALTIME_RZ) {
+ static char const utc[] = "UTC0";
+ gmtz = tzalloc(utc);
+ if (!gmtz) {
+ perror(utc);
+ exit(EXIT_FAILURE);
+ }
+ }
+}
+
+/* Convert *TP to UTC, storing the broken-down time into *TMP.
+ Return TMP if successful, NULL otherwise. This is like gmtime_r(TP, TMP),
+ except typically faster if USE_LOCALTIME_RZ. */
+static struct tm *
+my_gmtime_r(time_t *tp, struct tm *tmp)
+{
+ return USE_LOCALTIME_RZ ? localtime_rz(gmtz, tp, tmp) : gmtime_r(tp, tmp);
+}
+
+#ifndef TYPECHECK
+# define my_localtime_rz localtime_rz
+#else /* !defined TYPECHECK */
+
+static struct tm *
+my_localtime_rz(timezone_t tz, time_t *tp, struct tm *tmp)
+{
+ tmp = localtime_rz(tz, tp, tmp);
+ if (tmp) {
+ struct tm tm;
+ register time_t t;
+
+ tm = *tmp;
+ t = mktime_z(tz, &tm);
+ if (t != *tp) {
+ fflush(stdout);
+ fprintf(stderr, "\n%s: ", progname);
+ fprintf(stderr, tformat(), *tp);
+ fprintf(stderr, " ->");
+ fprintf(stderr, " year=%d", tmp->tm_year);
+ fprintf(stderr, " mon=%d", tmp->tm_mon);
+ fprintf(stderr, " mday=%d", tmp->tm_mday);
+ fprintf(stderr, " hour=%d", tmp->tm_hour);
+ fprintf(stderr, " min=%d", tmp->tm_min);
+ fprintf(stderr, " sec=%d", tmp->tm_sec);
+ fprintf(stderr, " isdst=%d", tmp->tm_isdst);
+ fprintf(stderr, " -> ");
+ fprintf(stderr, tformat(), t);
+ fprintf(stderr, "\n");
+ errout = true;
+ }
+ }
+ return tmp;
+}
+#endif /* !defined TYPECHECK */
+
+static void
+abbrok(const char *const abbrp, const char *const zone)
+{
+ register const char * cp;
+ register const char * wp;
+
+ if (warned)
+ return;
+ cp = abbrp;
+ while (is_alpha(*cp) || is_digit(*cp) || *cp == '-' || *cp == '+')
+ ++cp;
+ if (cp - abbrp < 3)
+ wp = _("has fewer than 3 characters");
+ else if (cp - abbrp > 6)
+ wp = _("has more than 6 characters");
+ else if (*cp)
+ wp = _("has characters other than ASCII alphanumerics, '-' or '+'");
+ else
+ return;
+ fflush(stdout);
+ fprintf(stderr,
+ _("%s: warning: zone \"%s\" abbreviation \"%s\" %s\n"),
+ progname, zone, abbrp, wp);
+ warned = errout = true;
+}
+
+/* Return a time zone abbreviation. If the abbreviation needs to be
+ saved, use *BUF (of size *BUFALLOC) to save it, and return the
+ abbreviation in the possibly-reallocated *BUF. Otherwise, just
+ return the abbreviation. Get the abbreviation from TMP.
+ Exit on memory allocation failure. */
+static char const *
+saveabbr(char **buf, size_t *bufalloc, struct tm const *tmp)
+{
+ char const *ab = abbr(tmp);
+ if (HAVE_LOCALTIME_RZ)
+ return ab;
+ else {
+ size_t ablen = strlen(ab);
+ if (*bufalloc <= ablen) {
+ free(*buf);
+
+ /* Make the new buffer at least twice as long as the old,
+ to avoid O(N**2) behavior on repeated calls. */
+ *bufalloc = sumsize(*bufalloc, ablen + 1);
+
+ *buf = malloc(*bufalloc);
+ if (! *buf) {
+ perror(progname);
+ exit(EXIT_FAILURE);
+ }
+ }
+ return strcpy(*buf, ab);
+ }
+}
+
+static void
+close_file(FILE *stream)
+{
+ char const *e = (ferror(stream) ? _("I/O error")
+ : fclose(stream) != 0 ? strerror(errno) : NULL);
+ if (e) {
+ fprintf(stderr, "%s: %s\n", progname, e);
+ exit(EXIT_FAILURE);
+ }
+}
+
+static void
+usage(FILE * const stream, const int status)
+{
+ fprintf(stream,
+_("%s: usage: %s [--version] [--help] [-{vV}] [-{ct} [lo,]hi] zonename ...\n"
+ "\n"
+ "Report bugs to %s.\n"),
+ progname, progname, REPORT_BUGS_TO);
+ if (status == EXIT_SUCCESS)
+ close_file(stream);
+ exit(status);
+}
+
+int
+main(int argc, char *argv[])
+{
+ /* These are static so that they're initially zero. */
+ static char * abbrev;
+ static size_t abbrevsize;
+ static struct tm newtm;
+
+ register int i;
+ register bool vflag;
+ register bool Vflag;
+ register char * cutarg;
+ register char * cuttimes;
+ register time_t cutlotime;
+ register time_t cuthitime;
+ time_t now;
+ time_t t;
+ time_t newt;
+ struct tm tm;
+ register struct tm * tmp;
+ register struct tm * newtmp;
+
+ cutlotime = absolute_min_time;
+ cuthitime = absolute_max_time;
+#if HAVE_GETTEXT
+ setlocale(LC_ALL, "");
+#ifdef TZ_DOMAINDIR
+ bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
+#endif /* defined TEXTDOMAINDIR */
+ textdomain(TZ_DOMAIN);
+#endif /* HAVE_GETTEXT */
+ progname = argv[0];
+ for (i = 1; i < argc; ++i)
+ if (strcmp(argv[i], "--version") == 0) {
+ printf("zdump %s%s\n", PKGVERSION, TZVERSION);
+ return EXIT_SUCCESS;
+ } else if (strcmp(argv[i], "--help") == 0) {
+ usage(stdout, EXIT_SUCCESS);
+ }
+ vflag = Vflag = false;
+ cutarg = cuttimes = NULL;
+ for (;;)
+ switch (getopt(argc, argv, "c:t:vV")) {
+ case 'c': cutarg = optarg; break;
+ case 't': cuttimes = optarg; break;
+ case 'v': vflag = true; break;
+ case 'V': Vflag = true; break;
+ case -1:
+ if (! (optind == argc - 1 && strcmp(argv[optind], "=") == 0))
+ goto arg_processing_done;
+ /* Fall through. */
+ default:
+ usage(stderr, EXIT_FAILURE);
+ }
+ arg_processing_done:;
+
+ if (vflag | Vflag) {
+ intmax_t lo;
+ intmax_t hi;
+ char *loend, *hiend;
+ register intmax_t cutloyear = ZDUMP_LO_YEAR;
+ register intmax_t cuthiyear = ZDUMP_HI_YEAR;
+ if (cutarg != NULL) {
+ lo = strtoimax(cutarg, &loend, 10);
+ if (cutarg != loend && !*loend) {
+ hi = lo;
+ cuthiyear = hi;
+ } else if (cutarg != loend && *loend == ','
+ && (hi = strtoimax(loend + 1, &hiend, 10),
+ loend + 1 != hiend && !*hiend)) {
+ cutloyear = lo;
+ cuthiyear = hi;
+ } else {
+ fprintf(stderr, _("%s: wild -c argument %s\n"),
+ progname, cutarg);
+ return EXIT_FAILURE;
+ }
+ }
+ if (cutarg != NULL || cuttimes == NULL) {
+ cutlotime = yeartot(cutloyear);
+ cuthitime = yeartot(cuthiyear);
+ }
+ if (cuttimes != NULL) {
+ lo = strtoimax(cuttimes, &loend, 10);
+ if (cuttimes != loend && !*loend) {
+ hi = lo;
+ if (hi < cuthitime) {
+ if (hi < absolute_min_time)
+ hi = absolute_min_time;
+ cuthitime = hi;
+ }
+ } else if (cuttimes != loend && *loend == ','
+ && (hi = strtoimax(loend + 1, &hiend, 10),
+ loend + 1 != hiend && !*hiend)) {
+ if (cutlotime < lo) {
+ if (absolute_max_time < lo)
+ lo = absolute_max_time;
+ cutlotime = lo;
+ }
+ if (hi < cuthitime) {
+ if (hi < absolute_min_time)
+ hi = absolute_min_time;
+ cuthitime = hi;
+ }
+ } else {
+ fprintf(stderr,
+ _("%s: wild -t argument %s\n"),
+ progname, cuttimes);
+ return EXIT_FAILURE;
+ }
+ }
+ }
+ gmtzinit();
+ now = time(NULL);
+ longest = 0;
+ for (i = optind; i < argc; i++) {
+ size_t arglen = strlen(argv[i]);
+ if (longest < arglen)
+ longest = arglen < INT_MAX ? arglen : INT_MAX;
+ }
+
+ for (i = optind; i < argc; ++i) {
+ timezone_t tz = tzalloc(argv[i]);
+ char const *ab;
+ if (!tz) {
+ perror(argv[i]);
+ return EXIT_FAILURE;
+ }
+ if (! (vflag | Vflag)) {
+ show(tz, argv[i], now, false);
+ tzfree(tz);
+ continue;
+ }
+ warned = false;
+ t = absolute_min_time;
+ if (!Vflag) {
+ show(tz, argv[i], t, true);
+ t += SECSPERDAY;
+ show(tz, argv[i], t, true);
+ }
+ if (t < cutlotime)
+ t = cutlotime;
+ tmp = my_localtime_rz(tz, &t, &tm);
+ if (tmp)
+ ab = saveabbr(&abbrev, &abbrevsize, &tm);
+ while (t < cuthitime) {
+ newt = ((t < absolute_max_time - SECSPERDAY / 2
+ && t + SECSPERDAY / 2 < cuthitime)
+ ? t + SECSPERDAY / 2
+ : cuthitime);
+ newtmp = localtime_rz(tz, &newt, &newtm);
+ if ((tmp == NULL || newtmp == NULL) ? (tmp != newtmp) :
+ (delta(&newtm, &tm) != (newt - t) ||
+ newtm.tm_isdst != tm.tm_isdst ||
+ strcmp(abbr(&newtm), ab) != 0)) {
+ newt = hunt(tz, argv[i], t, newt);
+ newtmp = localtime_rz(tz, &newt, &newtm);
+ if (newtmp)
+ ab = saveabbr(&abbrev, &abbrevsize,
+ &newtm);
+ }
+ t = newt;
+ tm = newtm;
+ tmp = newtmp;
+ }
+ if (!Vflag) {
+ t = absolute_max_time;
+ t -= SECSPERDAY;
+ show(tz, argv[i], t, true);
+ t += SECSPERDAY;
+ show(tz, argv[i], t, true);
+ }
+ tzfree(tz);
+ }
+ close_file(stdout);
+ if (errout && (ferror(stderr) || fclose(stderr) != 0))
+ return EXIT_FAILURE;
+ return EXIT_SUCCESS;
+}
+
+static time_t
+yeartot(intmax_t y)
+{
+ register intmax_t myy, seconds, years;
+ register time_t t;
+
+ myy = EPOCH_YEAR;
+ t = 0;
+ while (myy < y) {
+ if (SECSPER400YEARS_FITS && 400 <= y - myy) {
+ intmax_t diff400 = (y - myy) / 400;
+ if (INTMAX_MAX / SECSPER400YEARS < diff400)
+ return absolute_max_time;
+ seconds = diff400 * SECSPER400YEARS;
+ years = diff400 * 400;
+ } else {
+ seconds = isleap(myy) ? SECSPERLYEAR : SECSPERNYEAR;
+ years = 1;
+ }
+ myy += years;
+ if (t > absolute_max_time - seconds)
+ return absolute_max_time;
+ t += seconds;
+ }
+ while (y < myy) {
+ if (SECSPER400YEARS_FITS && y + 400 <= myy && myy < 0) {
+ intmax_t diff400 = (myy - y) / 400;
+ if (INTMAX_MAX / SECSPER400YEARS < diff400)
+ return absolute_min_time;
+ seconds = diff400 * SECSPER400YEARS;
+ years = diff400 * 400;
+ } else {
+ seconds = isleap(myy - 1) ? SECSPERLYEAR : SECSPERNYEAR;
+ years = 1;
+ }
+ myy -= years;
+ if (t < absolute_min_time + seconds)
+ return absolute_min_time;
+ t -= seconds;
+ }
+ return t;
+}
+
+static time_t
+hunt(timezone_t tz, char *name, time_t lot, time_t hit)
+{
+ static char * loab;
+ static size_t loabsize;
+ char const * ab;
+ time_t t;
+ struct tm lotm;
+ register struct tm * lotmp;
+ struct tm tm;
+ register struct tm * tmp;
+
+ lotmp = my_localtime_rz(tz, &lot, &lotm);
+ if (lotmp)
+ ab = saveabbr(&loab, &loabsize, &lotm);
+ for ( ; ; ) {
+ time_t diff = hit - lot;
+ if (diff < 2)
+ break;
+ t = lot;
+ t += diff / 2;
+ if (t <= lot)
+ ++t;
+ else if (t >= hit)
+ --t;
+ tmp = my_localtime_rz(tz, &t, &tm);
+ if ((lotmp == NULL || tmp == NULL) ? (lotmp == tmp) :
+ (delta(&tm, &lotm) == (t - lot) &&
+ tm.tm_isdst == lotm.tm_isdst &&
+ strcmp(abbr(&tm), ab) == 0)) {
+ lot = t;
+ lotm = tm;
+ lotmp = tmp;
+ } else hit = t;
+ }
+ show(tz, name, lot, true);
+ show(tz, name, hit, true);
+ return hit;
+}
+
+/*
+** Thanks to Paul Eggert for logic used in delta.
+*/
+
+static intmax_t
+delta(struct tm * newp, struct tm *oldp)
+{
+ register intmax_t result;
+ register int tmy;
+
+ if (newp->tm_year < oldp->tm_year)
+ return -delta(oldp, newp);
+ result = 0;
+ for (tmy = oldp->tm_year; tmy < newp->tm_year; ++tmy)
+ result += DAYSPERNYEAR + isleap_sum(tmy, TM_YEAR_BASE);
+ result += newp->tm_yday - oldp->tm_yday;
+ result *= HOURSPERDAY;
+ result += newp->tm_hour - oldp->tm_hour;
+ result *= MINSPERHOUR;
+ result += newp->tm_min - oldp->tm_min;
+ result *= SECSPERMIN;
+ result += newp->tm_sec - oldp->tm_sec;
+ return result;
+}
+
+#ifndef TM_GMTOFF
+/* Return A->tm_yday, adjusted to compare it fairly to B->tm_yday.
+ Assume A and B differ by at most one year. */
+static int
+adjusted_yday(struct tm const *a, struct tm const *b)
+{
+ int yday = a->tm_yday;
+ if (b->tm_year < a->tm_year)
+ yday += 365 + isleap_sum(b->tm_year, TM_YEAR_BASE);
+ return yday;
+}
+#endif
+
+/* If A is the broken-down local time and B the broken-down UTC for
+ the same instant, return A's UTC offset in seconds, where positive
+ offsets are east of Greenwich. On failure, return LONG_MIN. */
+static long
+gmtoff(struct tm const *a, struct tm const *b)
+{
+#ifdef TM_GMTOFF
+ return a->TM_GMTOFF;
+#else
+ if (! b)
+ return LONG_MIN;
+ else {
+ int ayday = adjusted_yday(a, b);
+ int byday = adjusted_yday(b, a);
+ int days = ayday - byday;
+ long hours = a->tm_hour - b->tm_hour + 24 * days;
+ long minutes = a->tm_min - b->tm_min + 60 * hours;
+ long seconds = a->tm_sec - b->tm_sec + 60 * minutes;
+ return seconds;
+ }
+#endif
+}
+
+static void
+show(timezone_t tz, char *zone, time_t t, bool v)
+{
+ register struct tm * tmp;
+ register struct tm * gmtmp;
+ struct tm tm, gmtm;
+
+ printf("%-*s ", longest, zone);
+ if (v) {
+ gmtmp = my_gmtime_r(&t, &gmtm);
+ if (gmtmp == NULL) {
+ printf(tformat(), t);
+ } else {
+ dumptime(gmtmp);
+ printf(" UT");
+ }
+ printf(" = ");
+ }
+ tmp = my_localtime_rz(tz, &t, &tm);
+ dumptime(tmp);
+ if (tmp != NULL) {
+ if (*abbr(tmp) != '\0')
+ printf(" %s", abbr(tmp));
+ if (v) {
+ long off = gmtoff(tmp, gmtmp);
+ printf(" isdst=%d", tmp->tm_isdst);
+ if (off != LONG_MIN)
+ printf(" gmtoff=%ld", off);
+ }
+ }
+ printf("\n");
+ if (tmp != NULL && *abbr(tmp) != '\0')
+ abbrok(abbr(tmp), zone);
+}
+
+static char const *
+abbr(struct tm const *tmp)
+{
+#ifdef TM_ZONE
+ return tmp->TM_ZONE;
+#else
+ return (0 <= tmp->tm_isdst && tzname[0 < tmp->tm_isdst]
+ ? tzname[0 < tmp->tm_isdst]
+ : "");
+#endif
+}
+
+/*
+** The code below can fail on certain theoretical systems;
+** it works on all known real-world systems as of 2004-12-30.
+*/
+
+static const char *
+tformat(void)
+{
+ if (0 > (time_t) -1) { /* signed */
+ if (sizeof (time_t) == sizeof (intmax_t))
+ return "%"PRIdMAX;
+ if (sizeof (time_t) > sizeof (long))
+ return "%lld";
+ if (sizeof (time_t) > sizeof (int))
+ return "%ld";
+ return "%d";
+ }
+#ifdef PRIuMAX
+ if (sizeof (time_t) == sizeof (uintmax_t))
+ return "%"PRIuMAX;
+#endif
+ if (sizeof (time_t) > sizeof (unsigned long))
+ return "%llu";
+ if (sizeof (time_t) > sizeof (unsigned int))
+ return "%lu";
+ return "%u";
+}
+
+static void
+dumptime(register const struct tm *timeptr)
+{
+ static const char wday_name[][3] = {
+ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+ };
+ static const char mon_name[][3] = {
+ "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+ };
+ register const char * wn;
+ register const char * mn;
+ register int lead;
+ register int trail;
+
+ if (timeptr == NULL) {
+ printf("NULL");
+ return;
+ }
+ /*
+ ** The packaged localtime_rz and gmtime_r never put out-of-range
+ ** values in tm_wday or tm_mon, but since this code might be compiled
+ ** with other (perhaps experimental) versions, paranoia is in order.
+ */
+ if (timeptr->tm_wday < 0 || timeptr->tm_wday >=
+ (int) (sizeof wday_name / sizeof wday_name[0]))
+ wn = "???";
+ else wn = wday_name[timeptr->tm_wday];
+ if (timeptr->tm_mon < 0 || timeptr->tm_mon >=
+ (int) (sizeof mon_name / sizeof mon_name[0]))
+ mn = "???";
+ else mn = mon_name[timeptr->tm_mon];
+ printf("%.3s %.3s%3d %.2d:%.2d:%.2d ",
+ wn, mn,
+ timeptr->tm_mday, timeptr->tm_hour,
+ timeptr->tm_min, timeptr->tm_sec);
+#define DIVISOR 10
+ trail = timeptr->tm_year % DIVISOR + TM_YEAR_BASE % DIVISOR;
+ lead = timeptr->tm_year / DIVISOR + TM_YEAR_BASE / DIVISOR +
+ trail / DIVISOR;
+ trail %= DIVISOR;
+ if (trail < 0 && lead > 0) {
+ trail += DIVISOR;
+ --lead;
+ } else if (lead < 0 && trail > 0) {
+ trail -= DIVISOR;
+ ++lead;
+ }
+ if (lead == 0)
+ printf("%d", trail);
+ else printf("%d%d", lead, ((trail < 0) ? -trail : trail));
+}
Deleted: vendor/tzcode/2016f/zic.8
===================================================================
--- vendor/tzcode/dist/zic.8 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zic.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,497 +0,0 @@
-.TH ZIC 8
-.SH NAME
-zic \- time zone compiler
-.SH SYNOPSIS
-.B zic
-[
-.B \-\-version
-]
-[
-.B \-v
-] [
-.B \-d
-.I directory
-] [
-.B \-l
-.I localtime
-] [
-.B \-p
-.I posixrules
-] [
-.B \-L
-.I leapsecondfilename
-] [
-.B \-s
-] [
-.B \-y
-.I command
-] [
-.I filename
-\&... ]
-.SH DESCRIPTION
-.if t .ds lq ``
-.if t .ds rq ''
-.if n .ds lq \&"\"
-.if n .ds rq \&"\"
-.de q
-\\$3\*(lq\\$1\*(rq\\$2
-..
-.I Zic
-reads text from the file(s) named on the command line
-and creates the time conversion information files specified in this input.
-If a
-.I filename
-is
-.BR \- ,
-the standard input is read.
-.PP
-These options are available:
-.TP
-.BI "\-\-version"
-Output version information and exit.
-.TP
-.BI "\-d " directory
-Create time conversion information files in the named directory rather than
-in the standard directory named below.
-.TP
-.BI "\-l " timezone
-Use the given time zone as local time.
-.I Zic
-will act as if the input contained a link line of the form
-.sp
-.ti +.5i
-Link \fItimezone\fP localtime
-.TP
-.BI "\-p " timezone
-Use the given time zone's rules when handling POSIX-format
-time zone environment variables.
-.I Zic
-will act as if the input contained a link line of the form
-.sp
-.ti +.5i
-Link \fItimezone\fP posixrules
-.TP
-.BI "\-L " leapsecondfilename
-Read leap second information from the file with the given name.
-If this option is not used,
-no leap second information appears in output files.
-.TP
-.B \-v
-Complain if a year that appears in a data file is outside the range
-of years representable by
-.IR time (2)
-values.
-Also complain if a time of 24:00
-(which cannot be handled by pre-1998 versions of
-.IR zic )
-appears in the input.
-.TP
-.B \-s
-Limit time values stored in output files to values that are the same
-whether they're taken to be signed or unsigned.
-You can use this option to generate SVVS-compatible files.
-.TP
-.BI "\-y " command
-Use the given
-.I command
-rather than
-.B yearistype
-when checking year types (see below).
-.PP
-Input lines are made up of fields.
-Fields are separated from one another by any number of white space characters.
-Leading and trailing white space on input lines is ignored.
-An unquoted sharp character (#) in the input introduces a comment which extends
-to the end of the line the sharp character appears on.
-White space characters and sharp characters may be enclosed in double quotes
-(") if they're to be used as part of a field.
-Any line that is blank (after comment stripping) is ignored.
-Non-blank lines are expected to be of one of three types:
-rule lines, zone lines, and link lines.
-.PP
-Names (such as month names) must be in English and are case insensitive.
-Abbreviations, if used, must be unambiguous in context.
-.PP
-A rule line has the form
-.nf
-.ti +.5i
-.ta \w'Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u
-.sp
-Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-.sp
-For example:
-.ti +.5i
-.sp
-Rule US 1967 1973 \- Apr lastSun 2:00 1:00 D
-.sp
-.fi
-The fields that make up a rule line are:
-.TP "\w'LETTER/S'u"
-.B NAME
-Gives the (arbitrary) name of the set of rules this rule is part of.
-.TP
-.B FROM
-Gives the first year in which the rule applies.
-Any integer year can be supplied; the Gregorian calendar is assumed.
-The word
-.B minimum
-(or an abbreviation) means the minimum year representable as an integer.
-The word
-.B maximum
-(or an abbreviation) means the maximum year representable as an integer.
-Rules can describe times that are not representable as time values,
-with the unrepresentable times ignored; this allows rules to be portable
-among hosts with differing time value types.
-.TP
-.B TO
-Gives the final year in which the rule applies.
-In addition to
-.B minimum
-and
-.B maximum
-(as above),
-the word
-.B only
-(or an abbreviation)
-may be used to repeat the value of the
-.B FROM
-field.
-.TP
-.B TYPE
-Gives the type of year in which the rule applies.
-If
-.B TYPE
-is
-.B \-
-then the rule applies in all years between
-.B FROM
-and
-.B TO
-inclusive.
-If
-.B TYPE
-is something else, then
-.I zic
-executes the command
-.ti +.5i
-\fByearistype\fP \fIyear\fP \fItype\fP
-.br
-to check the type of a year:
-an exit status of zero is taken to mean that the year is of the given type;
-an exit status of one is taken to mean that the year is not of the given type.
-.TP
-.B IN
-Names the month in which the rule takes effect.
-Month names may be abbreviated.
-.TP
-.B ON
-Gives the day on which the rule takes effect.
-Recognized forms include:
-.nf
-.in +.5i
-.sp
-.ta \w'Sun<=25\0\0'u
-5 the fifth of the month
-lastSun the last Sunday in the month
-lastMon the last Monday in the month
-Sun>=8 first Sunday on or after the eighth
-Sun<=25 last Sunday on or before the 25th
-.fi
-.in -.5i
-.sp
-Names of days of the week may be abbreviated or spelled out in full.
-Note that there must be no spaces within the
-.B ON
-field.
-.TP
-.B AT
-Gives the time of day at which the rule takes effect.
-Recognized forms include:
-.nf
-.in +.5i
-.sp
-.ta \w'1:28:13\0\0'u
-2 time in hours
-2:00 time in hours and minutes
-15:00 24-hour format time (for times after noon)
-1:28:14 time in hours, minutes, and seconds
-\- equivalent to 0
-.fi
-.in -.5i
-.sp
-where hour 0 is midnight at the start of the day,
-and hour 24 is midnight at the end of the day.
-Any of these forms may be followed by the letter
-.B w
-if the given time is local
-.q "wall clock"
-time,
-.B s
-if the given time is local
-.q standard
-time, or
-.B u
-(or
-.B g
-or
-.BR z )
-if the given time is universal time;
-in the absence of an indicator,
-wall clock time is assumed.
-.TP
-.B SAVE
-Gives the amount of time to be added to local standard time when the rule is in
-effect.
-This field has the same format as the
-.B AT
-field
-(although, of course, the
-.B w
-and
-.B s
-suffixes are not used).
-.TP
-.B LETTER/S
-Gives the
-.q "variable part"
-(for example, the
-.q S
-or
-.q D
-in
-.q EST
-or
-.q EDT )
-of time zone abbreviations to be used when this rule is in effect.
-If this field is
-.BR \- ,
-the variable part is null.
-.PP
-A zone line has the form
-.sp
-.nf
-.ti +.5i
-.ta \w'Zone\0\0'u +\w'Australia/Adelaide\0\0'u +\w'GMTOFF\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u
-Zone NAME GMTOFF RULES/SAVE FORMAT [UNTILYEAR [MONTH [DAY [TIME]]]]
-.sp
-For example:
-.sp
-.ti +.5i
-Zone Australia/Adelaide 9:30 Aus CST 1971 Oct 31 2:00
-.sp
-.fi
-The fields that make up a zone line are:
-.TP "\w'GMTOFF'u"
-.B NAME
-The name of the time zone.
-This is the name used in creating the time conversion information file for the
-zone.
-.TP
-.B GMTOFF
-The amount of time to add to UTC to get standard time in this zone.
-This field has the same format as the
-.B AT
-and
-.B SAVE
-fields of rule lines;
-begin the field with a minus sign if time must be subtracted from UTC.
-.TP
-.B RULES/SAVE
-The name of the rule(s) that apply in the time zone or,
-alternately, an amount of time to add to local standard time.
-If this field is
-.B \-
-then standard time always applies in the time zone.
-.TP
-.B FORMAT
-The format for time zone abbreviations in this time zone.
-The pair of characters
-.B %s
-is used to show where the
-.q "variable part"
-of the time zone abbreviation goes.
-Alternately,
-a slash (/)
-separates standard and daylight abbreviations.
-.TP
-.B UNTILYEAR [MONTH [DAY [TIME]]]
-The time at which the UTC offset or the rule(s) change for a location.
-It is specified as a year, a month, a day, and a time of day.
-If this is specified,
-the time zone information is generated from the given UTC offset
-and rule change until the time specified.
-The month, day, and time of day have the same format as the IN, ON, and AT
-fields of a rule; trailing fields can be omitted, and default to the
-earliest possible value for the missing fields.
-.IP
-The next line must be a
-.q continuation
-line; this has the same form as a zone line except that the
-string
-.q Zone
-and the name are omitted, as the continuation line will
-place information starting at the time specified as the
-.q until
-information in the previous line in the file used by the previous line.
-Continuation lines may contain
-.q until
-information, just as zone lines do, indicating that the next line is a further
-continuation.
-.PP
-A link line has the form
-.sp
-.nf
-.ti +.5i
-.ta \w'Link\0\0'u +\w'Europe/Istanbul\0\0'u
-Link LINK-FROM LINK-TO
-.sp
-For example:
-.sp
-.ti +.5i
-Link Europe/Istanbul Asia/Istanbul
-.sp
-.fi
-The
-.B LINK-FROM
-field should appear as the
-.B NAME
-field in some zone line;
-the
-.B LINK-TO
-field is used as an alternate name for that zone.
-.PP
-Except for continuation lines,
-lines may appear in any order in the input.
-.PP
-Lines in the file that describes leap seconds have the following form:
-.nf
-.ti +.5i
-.ta \w'Leap\0\0'u +\w'YEAR\0\0'u +\w'MONTH\0\0'u +\w'DAY\0\0'u +\w'HH:MM:SS\0\0'u +\w'CORR\0\0'u
-.sp
-Leap YEAR MONTH DAY HH:MM:SS CORR R/S
-.sp
-For example:
-.ti +.5i
-.sp
-Leap 1974 Dec 31 23:59:60 + S
-.sp
-.fi
-The
-.BR YEAR ,
-.BR MONTH ,
-.BR DAY ,
-and
-.B HH:MM:SS
-fields tell when the leap second happened.
-The
-.B CORR
-field
-should be
-.q +
-if a second was added
-or
-.q -
-if a second was skipped.
-.\" There's no need to document the following, since it's impossible for more
-.\" than one leap second to be inserted or deleted at a time.
-.\" The C Standard is in error in suggesting the possibility.
-.\" See Terry J Quinn, The BIPM and the accurate measure of time,
-.\" Proc IEEE 79, 7 (July 1991), 894-905.
-.\" or
-.\" .q ++
-.\" if two seconds were added
-.\" or
-.\" .q --
-.\" if two seconds were skipped.
-The
-.B R/S
-field
-should be (an abbreviation of)
-.q Stationary
-if the leap second time given by the other fields should be interpreted as UTC
-or
-(an abbreviation of)
-.q Rolling
-if the leap second time given by the other fields should be interpreted as
-local wall clock time.
-.SH "EXTENDED EXAMPLE"
-Here is an extended example of
-.I zic
-input, intended to illustrate many of its features.
-.br
-.ne 22
-.nf
-.in +2m
-.ta \w'# Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u
-.sp
-# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-Rule Swiss 1940 only - Nov 2 0:00 1:00 S
-Rule Swiss 1940 only - Dec 31 0:00 0 -
-Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
-Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0
-.sp .5
-Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
-Rule EU 1977 only - Sep lastSun 1:00u 0 -
-Rule EU 1978 only - Oct 1 1:00u 0 -
-Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
-Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
-Rule EU 1996 max - Oct lastSun 1:00u 0 -
-.sp
-.ta \w'# Zone\0\0'u +\w'Europe/Zurich\0\0'u +\w'0:34:08\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u
-# Zone NAME GMTOFF RULES FORMAT UNTIL
-Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
- 0:29:44 - BMT 1894 Jun
- 1:00 Swiss CE%sT 1981
- 1:00 EU CE%sT
-.sp
-Link Europe/Zurich Switzerland
-.sp
-.in
-.fi
-In this example, the zone is named Europe/Zurich but it has an alias
-as Switzerland. Zurich was 34 minutes and 8 seconds west of GMT until
-1848-09-12 at 00:00, when the offset changed to 29 minutes and 44
-seconds. After 1894-06-01 at 00:00 Swiss daylight saving rules (defined
-with lines beginning with "Rule Swiss") apply, and the GMT offset
-became one hour. From 1981 to the present, EU daylight saving rules have
-applied, and the UTC offset has remained at one hour.
-.PP
-In 1940, daylight saving time applied from November 2 at 00:00 to
-December 31 at 00:00. In 1941 and 1942, daylight saving time applied
-from the first Sunday in May at 02:00 to the first Sunday in October
-at 00:00.
-The pre-1981 EU daylight-saving rules have no effect
-here, but are included for completeness. Since 1981, daylight
-saving has begun on the last Sunday in March at 01:00 UTC.
-Until 1995 it ended the last Sunday in September at 01:00 UTC,
-but this changed to the last Sunday in October starting in 1996.
-.PP
-For purposes of
-display, "LMT" and "BMT" were initially used, respectively. Since
-Swiss rules and later EU rules were applied, the display name for the
-timezone has been CET for standard time and CEST for daylight saving
-time.
-.SH NOTES
-For areas with more than two types of local time,
-you may need to use local standard time in the
-.B AT
-field of the earliest transition time's rule to ensure that
-the earliest transition time recorded in the compiled file is correct.
-.PP
-If,
-for a particular zone,
-a clock advance caused by the start of daylight saving
-coincides with and is equal to
-a clock retreat caused by a change in UTC offset,
-.IR zic
-produces a single transition to daylight saving at the new UTC offset
-(without any change in wall clock time).
-To get separate transitions
-use multiple zone continuation lines
-specifying transition instants using universal time.
-.SH FILE
-/usr/local/etc/zoneinfo standard directory used for created files
-.SH "SEE ALSO"
-newctime(3), tzfile(5), zdump(8)
-.\" This file is in the public domain, so clarified as of
-.\" 2009-05-17 by Arthur David Olson.
Copied: vendor/tzcode/2016f/zic.8 (from rev 7736, vendor/tzcode/dist/zic.8)
===================================================================
--- vendor/tzcode/2016f/zic.8 (rev 0)
+++ vendor/tzcode/2016f/zic.8 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,568 @@
+.TH ZIC 8
+.SH NAME
+zic \- time zone compiler
+.SH SYNOPSIS
+.B zic
+[
+.I option
+\&... ] [
+.I filename
+\&... ]
+.SH DESCRIPTION
+.ie '\(lq'' .ds lq \&"\"
+.el .ds lq \(lq\"
+.ie '\(rq'' .ds rq \&"\"
+.el .ds rq \(rq\"
+.de q
+\\$3\*(lq\\$1\*(rq\\$2
+..
+.ie '\(la'' .ds < <
+.el .ds < \(la
+.ie '\(ra'' .ds > >
+.el .ds > \(ra
+.ie \n(.g \{\
+. ds : \:
+. ds - \f(CW-\fP
+.\}
+.el \{\
+. ds :
+. ds - \-
+.\}
+.I Zic
+reads text from the file(s) named on the command line
+and creates the time conversion information files specified in this input.
+If a
+.I filename
+is
+.q "\*-" ,
+the standard input is read.
+.PP
+These options are available:
+.TP
+.BI "\*-\*-version"
+Output version information and exit.
+.TP
+.BI "\*-d " directory
+Create time conversion information files in the named directory rather than
+in the standard directory named below.
+.TP
+.BI "\*-l " timezone
+Use the given time zone as local time.
+.I Zic
+will act as if the input contained a link line of the form
+.sp
+.ti +.5i
+Link \fItimezone\fP localtime
+.TP
+.BI "\*-p " timezone
+Use the given time zone's rules when handling POSIX-format
+time zone environment variables.
+.I Zic
+will act as if the input contained a link line of the form
+.sp
+.ti +.5i
+Link \fItimezone\fP posixrules
+.TP
+.BI "\*-L " leapsecondfilename
+Read leap second information from the file with the given name.
+If this option is not used,
+no leap second information appears in output files.
+.TP
+.B \*-v
+Be more verbose, and complain about the following situations:
+.RS
+.PP
+The input specifies a link to a link.
+.PP
+A year that appears in a data file is outside the range
+of years representable by
+.IR time (2)
+values.
+.PP
+A time of 24:00 or more appears in the input.
+Pre-1998 versions of
+.I zic
+prohibit 24:00, and pre-2007 versions prohibit times greater than 24:00.
+.PP
+A rule goes past the start or end of the month.
+Pre-2004 versions of
+.I zic
+prohibit this.
+.PP
+The output file does not contain all the information about the
+long-term future of a zone, because the future cannot be summarized as
+an extended POSIX TZ string. For example, as of 2013 this problem
+occurs for Iran's daylight-saving rules for the predicted future, as
+these rules are based on the Iranian calendar, which cannot be
+represented.
+.PP
+The output contains data that may not be handled properly by client
+code designed for older
+.I zic
+output formats. These compatibility issues affect only time stamps
+before 1970 or after the start of 2038.
+.PP
+A time zone abbreviation has fewer than 3 characters.
+POSIX requires at least 3.
+.PP
+An output file name contains a byte that is not an ASCII letter,
+.q "\*-" ,
+.q "/" ,
+or
+.q "_" ;
+or it contains a file name component that contains more than 14 bytes
+or that starts with
+.q "\*-" .
+.RE
+.TP
+.B \*-s
+Limit time values stored in output files to values that are the same
+whether they're taken to be signed or unsigned.
+You can use this option to generate SVVS-compatible files.
+.PP
+Input files should be text files, that is, they should be a series of
+zero or more lines, each ending in a newline byte and containing at
+most 511 bytes, and without any NUL bytes. The input text's encoding
+is typically UTF-8 or ASCII; it should have a unibyte representation
+for the POSIX Portable Character Set (PPCS)
+\*<http://pubs\*:.opengroup\*:.org/\*:onlinepubs/\*:9699919799/\*:basedefs/\*:V1_chap06\*:.html\*>
+and the encoding's non-unibyte characters should consist entirely of
+non-PPCS bytes. Non-PPCS characters typically occur only in comments:
+although output file names and time zone abbreviations can contain
+nearly any character, other software will work better if these are
+limited to the restricted syntax described under the
+.B \*-v
+option.
+.PP
+Input lines are made up of fields.
+Fields are separated from one another by one or more white space characters.
+The white space characters are space, form feed, carriage return, newline,
+tab, and vertical tab.
+Leading and trailing white space on input lines is ignored.
+An unquoted sharp character (#) in the input introduces a comment which extends
+to the end of the line the sharp character appears on.
+White space characters and sharp characters may be enclosed in double quotes
+(") if they're to be used as part of a field.
+Any line that is blank (after comment stripping) is ignored.
+Non-blank lines are expected to be of one of three types:
+rule lines, zone lines, and link lines.
+.PP
+Names (such as month names) must be in English and are case insensitive.
+Abbreviations, if used, must be unambiguous in context.
+.PP
+A rule line has the form
+.nf
+.ti +.5i
+.ta \w'Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u
+.sp
+Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+.sp
+For example:
+.ti +.5i
+.sp
+Rule US 1967 1973 \*- Apr lastSun 2:00 1:00 D
+.sp
+.fi
+The fields that make up a rule line are:
+.TP "\w'LETTER/S'u"
+.B NAME
+Gives the (arbitrary) name of the set of rules this rule is part of.
+.TP
+.B FROM
+Gives the first year in which the rule applies.
+Any integer year can be supplied; the proleptic Gregorian calendar is assumed.
+The word
+.B minimum
+(or an abbreviation) means the minimum year representable as an integer.
+The word
+.B maximum
+(or an abbreviation) means the maximum year representable as an integer.
+Rules can describe times that are not representable as time values,
+with the unrepresentable times ignored; this allows rules to be portable
+among hosts with differing time value types.
+.TP
+.B TO
+Gives the final year in which the rule applies.
+In addition to
+.B minimum
+and
+.B maximum
+(as above),
+the word
+.B only
+(or an abbreviation)
+may be used to repeat the value of the
+.B FROM
+field.
+.TP
+.B TYPE
+should be
+.q \*-
+and is present for compatibility with older versions of
+.I zic
+in which it could contain year types.
+.TP
+.B IN
+Names the month in which the rule takes effect.
+Month names may be abbreviated.
+.TP
+.B ON
+Gives the day on which the rule takes effect.
+Recognized forms include:
+.nf
+.in +.5i
+.sp
+.ta \w'Sun<=25\0\0'u
+5 the fifth of the month
+lastSun the last Sunday in the month
+lastMon the last Monday in the month
+Sun>=8 first Sunday on or after the eighth
+Sun<=25 last Sunday on or before the 25th
+.fi
+.in -.5i
+.sp
+Names of days of the week may be abbreviated or spelled out in full.
+Note that there must be no spaces within the
+.B ON
+field.
+.TP
+.B AT
+Gives the time of day at which the rule takes effect.
+Recognized forms include:
+.nf
+.in +.5i
+.sp
+.ta \w'1:28:13\0\0'u
+2 time in hours
+2:00 time in hours and minutes
+15:00 24-hour format time (for times after noon)
+1:28:14 time in hours, minutes, and seconds
+\*- equivalent to 0
+.fi
+.in -.5i
+.sp
+where hour 0 is midnight at the start of the day,
+and hour 24 is midnight at the end of the day.
+Any of these forms may be followed by the letter
+.B w
+if the given time is local
+.q "wall clock"
+time,
+.B s
+if the given time is local
+.q "standard"
+time, or
+.B u
+(or
+.B g
+or
+.BR z )
+if the given time is universal time;
+in the absence of an indicator,
+wall clock time is assumed.
+The intent is that a rule line describes the instants when a
+clock/calendar set to the type of time specified in the
+.B AT
+field would show the specified date and time of day.
+.TP
+.B SAVE
+Gives the amount of time to be added to local standard time when the rule is in
+effect.
+This field has the same format as the
+.B AT
+field
+(although, of course, the
+.B w
+and
+.B s
+suffixes are not used).
+Only the sum of standard time and this amount matters; for example,
+.I zic
+does not distinguish a 10:30 standard time plus an 0:30
+.B SAVE
+from a 10:00 standard time plus a 1:00
+.BR SAVE .
+.TP
+.B LETTER/S
+Gives the
+.q "variable part"
+(for example, the
+.q "S"
+or
+.q "D"
+in
+.q "EST"
+or
+.q "EDT" )
+of time zone abbreviations to be used when this rule is in effect.
+If this field is
+.q \*- ,
+the variable part is null.
+.PP
+A zone line has the form
+.sp
+.nf
+.ti +.5i
+.ta \w'Zone\0\0'u +\w'Australia/Adelaide\0\0'u +\w'GMTOFF\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u
+Zone NAME GMTOFF RULES/SAVE FORMAT [UNTILYEAR [MONTH [DAY [TIME]]]]
+.sp
+For example:
+.sp
+.ti +.5i
+Zone Australia/Adelaide 9:30 Aus AC%sT 1971 Oct 31 2:00
+.sp
+.fi
+The fields that make up a zone line are:
+.TP "\w'GMTOFF'u"
+.B NAME
+The name of the time zone.
+This is the name used in creating the time conversion information file for the
+zone.
+It should not contain a file name component
+.q ".\&"
+or
+.q ".." ;
+a file name component is a maximal substring that does not contain
+.q "/" .
+.TP
+.B GMTOFF
+The amount of time to add to UT to get standard time in this zone.
+This field has the same format as the
+.B AT
+and
+.B SAVE
+fields of rule lines;
+begin the field with a minus sign if time must be subtracted from UT.
+.TP
+.B RULES/SAVE
+The name of the rule(s) that apply in the time zone or,
+alternately, an amount of time to add to local standard time.
+If this field is
+.B \*-
+then standard time always applies in the time zone.
+When an amount of time is given, only the sum of standard time and
+this amount matters.
+.TP
+.B FORMAT
+The format for time zone abbreviations in this time zone.
+The pair of characters
+.B %s
+is used to show where the
+.q "variable part"
+of the time zone abbreviation goes.
+Alternately, a format can use the pair of characters
+.B %z
+to stand for the UTC offset in the form
+.RI \(+- hh ,
+.RI \(+- hhmm ,
+or
+.RI \(+- hhmmss ,
+using the shortest form that does not lose information, where
+.IR hh ,
+.IR mm ,
+and
+.I ss
+are the hours, minutes, and seconds east (+) or west (\(mi) of UTC.
+Alternately,
+a slash (/)
+separates standard and daylight abbreviations.
+To conform to POSIX, a time zone abbreviation should contain only
+alphanumeric ASCII characters, "+" and "\*-".
+.TP
+.B UNTILYEAR [MONTH [DAY [TIME]]]
+The time at which the UT offset or the rule(s) change for a location.
+It is specified as a year, a month, a day, and a time of day.
+If this is specified,
+the time zone information is generated from the given UT offset
+and rule change until the time specified, which is interpreted using
+the rules in effect just before the transition.
+The month, day, and time of day have the same format as the IN, ON, and AT
+fields of a rule; trailing fields can be omitted, and default to the
+earliest possible value for the missing fields.
+.IP
+The next line must be a
+.q "continuation"
+line; this has the same form as a zone line except that the
+string
+.q "Zone"
+and the name are omitted, as the continuation line will
+place information starting at the time specified as the
+.q "until"
+information in the previous line in the file used by the previous line.
+Continuation lines may contain
+.q "until"
+information, just as zone lines do, indicating that the next line is a further
+continuation.
+.PP
+If a zone changes at the same instant that a rule would otherwise take
+effect in the earlier zone or continuation line, the rule is ignored.
+In a single zone it is an error if two rules take effect at the same
+instant, or if two zone changes take effect at the same instant.
+.PP
+A link line has the form
+.sp
+.nf
+.ti +.5i
+.ta \w'Link\0\0'u +\w'Europe/Istanbul\0\0'u
+Link TARGET LINK-NAME
+.sp
+For example:
+.sp
+.ti +.5i
+Link Europe/Istanbul Asia/Istanbul
+.sp
+.fi
+The
+.B TARGET
+field should appear as the
+.B NAME
+field in some zone line.
+The
+.B LINK-NAME
+field is used as an alternate name for that zone;
+it has the same syntax as a zone line's
+.B NAME
+field.
+.PP
+Except for continuation lines,
+lines may appear in any order in the input.
+However, the behavior is unspecified if multiple zone or link lines
+define the same name, or if the source of one link line is the target
+of another.
+.PP
+Lines in the file that describes leap seconds have the following form:
+.nf
+.ti +.5i
+.ta \w'Leap\0\0'u +\w'YEAR\0\0'u +\w'MONTH\0\0'u +\w'DAY\0\0'u +\w'HH:MM:SS\0\0'u +\w'CORR\0\0'u
+.sp
+Leap YEAR MONTH DAY HH:MM:SS CORR R/S
+.sp
+For example:
+.ti +.5i
+.sp
+Leap 1974 Dec 31 23:59:60 + S
+.sp
+.fi
+The
+.BR YEAR ,
+.BR MONTH ,
+.BR DAY ,
+and
+.B HH:MM:SS
+fields tell when the leap second happened.
+The
+.B CORR
+field
+should be
+.q "+"
+if a second was added
+or
+.q "\*-"
+if a second was skipped.
+.\" There's no need to document the following, since it's impossible for more
+.\" than one leap second to be inserted or deleted at a time.
+.\" The C Standard is in error in suggesting the possibility.
+.\" See Terry J Quinn, The BIPM and the accurate measure of time,
+.\" Proc IEEE 79, 7 (July 1991), 894-905.
+.\" or
+.\" .q ++
+.\" if two seconds were added
+.\" or
+.\" .q --
+.\" if two seconds were skipped.
+The
+.B R/S
+field
+should be (an abbreviation of)
+.q "Stationary"
+if the leap second time given by the other fields should be interpreted as UTC
+or
+(an abbreviation of)
+.q "Rolling"
+if the leap second time given by the other fields should be interpreted as
+local wall clock time.
+.SH "EXTENDED EXAMPLE"
+Here is an extended example of
+.I zic
+input, intended to illustrate many of its features.
+.br
+.ne 22
+.nf
+.in +2m
+.ta \w'# Rule\0\0'u +\w'NAME\0\0'u +\w'FROM\0\0'u +\w'1973\0\0'u +\w'TYPE\0\0'u +\w'Apr\0\0'u +\w'lastSun\0\0'u +\w'2:00\0\0'u +\w'SAVE\0\0'u
+.sp
+# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+Rule Swiss 1941 1942 \*- May Mon>=1 1:00 1:00 S
+Rule Swiss 1941 1942 \*- Oct Mon>=1 2:00 0 \*-
+.sp .5
+Rule EU 1977 1980 \*- Apr Sun>=1 1:00u 1:00 S
+Rule EU 1977 only \*- Sep lastSun 1:00u 0 \*-
+Rule EU 1978 only \*- Oct 1 1:00u 0 \*-
+Rule EU 1979 1995 \*- Sep lastSun 1:00u 0 \*-
+Rule EU 1981 max \*- Mar lastSun 1:00u 1:00 S
+Rule EU 1996 max \*- Oct lastSun 1:00u 0 \*-
+.sp
+.ta \w'# Zone\0\0'u +\w'Europe/Zurich\0\0'u +\w'GMTOFF\0\0'u +\w'RULES/SAVE\0\0'u +\w'FORMAT\0\0'u
+# Zone NAME GMTOFF RULES/SAVE FORMAT UNTIL
+Zone Europe/Zurich 0:34:08 \*- LMT 1853 Jul 16
+ 0:29:46 \*- BMT 1894 Jun
+ 1:00 Swiss CE%sT 1981
+ 1:00 EU CE%sT
+.sp
+Link Europe/Zurich Switzerland
+.sp
+.in
+.fi
+In this example, the zone is named Europe/Zurich but it has an alias
+as Switzerland. This example says that Zurich was 34 minutes and 8
+seconds west of UT until 1853-07-16 at 00:00, when the legal offset
+was changed to 7\(de\|26\(fm\|22.50\(sd; although this works out to
+0:29:45.50, the input format cannot represent fractional seconds so it
+is rounded here. After 1894-06-01 at 00:00 Swiss daylight saving rules
+(defined with lines beginning with "Rule Swiss") apply, and the UT offset
+became one hour. From 1981 to the present, EU daylight saving rules have
+applied, and the UTC offset has remained at one hour.
+.PP
+In 1941 and 1942, daylight saving time applied from the first Monday
+in May at 01:00 to the first Monday in October at 02:00.
+The pre-1981 EU daylight-saving rules have no effect
+here, but are included for completeness. Since 1981, daylight
+saving has begun on the last Sunday in March at 01:00 UTC.
+Until 1995 it ended the last Sunday in September at 01:00 UTC,
+but this changed to the last Sunday in October starting in 1996.
+.PP
+For purposes of
+display, "LMT" and "BMT" were initially used, respectively. Since
+Swiss rules and later EU rules were applied, the display name for the
+time zone has been CET for standard time and CEST for daylight saving
+time.
+.SH NOTES
+For areas with more than two types of local time,
+you may need to use local standard time in the
+.B AT
+field of the earliest transition time's rule to ensure that
+the earliest transition time recorded in the compiled file is correct.
+.PP
+If,
+for a particular zone,
+a clock advance caused by the start of daylight saving
+coincides with and is equal to
+a clock retreat caused by a change in UT offset,
+.IR zic
+produces a single transition to daylight saving at the new UT offset
+(without any change in wall clock time).
+To get separate transitions
+use multiple zone continuation lines
+specifying transition instants using universal time.
+.PP
+Time stamps well before the Big Bang are silently omitted from the output.
+This works around bugs in software that mishandles large negative time
+stamps. Call it sour grapes, but pre-Big-Bang time stamps are
+physically suspect anyway. The pre-Big-Bang cutoff time is
+approximate and may change in future versions.
+.SH FILE
+/usr/local/etc/zoneinfo standard directory used for created files
+.SH "SEE ALSO"
+newctime(3), tzfile(5), zdump(8)
+.\" This file is in the public domain, so clarified as of
+.\" 2009-05-17 by Arthur David Olson.
Deleted: vendor/tzcode/2016f/zic.8.txt
===================================================================
--- vendor/tzcode/dist/zic.8.txt 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zic.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,293 +0,0 @@
-ZIC(8) ZIC(8)
-
-NAME
- zic - time zone compiler
-
-SYNOPSIS
- zic [ --version ] [ -v ] [ -d directory ] [ -l localtime ] [ -p
- posixrules ] [ -L leapsecondfilename ] [ -s ] [ -y command ] [ filename
- ... ]
-
-DESCRIPTION
- Zic reads text from the file(s) named on the command line and creates
- the time conversion information files specified in this input. If a
- filename is -, the standard input is read.
-
- These options are available:
-
- --version
- Output version information and exit.
-
- -d directory
- Create time conversion information files in the named directory
- rather than in the standard directory named below.
-
- -l timezone
- Use the given time zone as local time. Zic will act as if the
- input contained a link line of the form
-
- Link timezone localtime
-
- -p timezone
- Use the given time zone's rules when handling POSIX-format time
- zone environment variables. Zic will act as if the input
- contained a link line of the form
-
- Link timezone posixrules
-
- -L leapsecondfilename
- Read leap second information from the file with the given name.
- If this option is not used, no leap second information appears
- in output files.
-
- -v Complain if a year that appears in a data file is outside the
- range of years representable by time(2) values. Also complain
- if a time of 24:00 (which cannot be handled by pre-1998 versions
- of zic) appears in the input.
-
- -s Limit time values stored in output files to values that are the
- same whether they're taken to be signed or unsigned. You can
- use this option to generate SVVS-compatible files.
-
- -y command
- Use the given command rather than yearistype when checking year
- types (see below).
-
- Input lines are made up of fields. Fields are separated from one
- another by any number of white space characters. Leading and trailing
- white space on input lines is ignored. An unquoted sharp character (#)
- in the input introduces a comment which extends to the end of the line
- the sharp character appears on. White space characters and sharp
- characters may be enclosed in double quotes (") if they're to be used
- as part of a field. Any line that is blank (after comment stripping)
- is ignored. Non-blank lines are expected to be of one of three types:
- rule lines, zone lines, and link lines.
-
- Names (such as month names) must be in English and are case
- insensitive. Abbreviations, if used, must be unambiguous in context.
-
- A rule line has the form
-
- Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
-
- For example:
-
- Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
-
- The fields that make up a rule line are:
-
- NAME Gives the (arbitrary) name of the set of rules this rule is
- part of.
-
- FROM Gives the first year in which the rule applies. Any integer
- year can be supplied; the Gregorian calendar is assumed. The
- word minimum (or an abbreviation) means the minimum year
- representable as an integer. The word maximum (or an
- abbreviation) means the maximum year representable as an
- integer. Rules can describe times that are not representable
- as time values, with the unrepresentable times ignored; this
- allows rules to be portable among hosts with differing time
- value types.
-
- TO Gives the final year in which the rule applies. In addition to
- minimum and maximum (as above), the word only (or an
- abbreviation) may be used to repeat the value of the FROM
- field.
-
- TYPE Gives the type of year in which the rule applies. If TYPE is -
- then the rule applies in all years between FROM and TO
- inclusive. If TYPE is something else, then zic executes the
- command
- yearistype year type
- to check the type of a year: an exit status of zero is taken to
- mean that the year is of the given type; an exit status of one
- is taken to mean that the year is not of the given type.
-
- IN Names the month in which the rule takes effect. Month names
- may be abbreviated.
-
- ON Gives the day on which the rule takes effect. Recognized forms
- include:
-
- 5 the fifth of the month
- lastSun the last Sunday in the month
- lastMon the last Monday in the month
- Sun>=8 first Sunday on or after the eighth
- Sun<=25 last Sunday on or before the 25th
-
- Names of days of the week may be abbreviated or spelled out in
- full. Note that there must be no spaces within the ON field.
-
- AT Gives the time of day at which the rule takes effect.
- Recognized forms include:
-
- 2 time in hours
- 2:00 time in hours and minutes
- 15:00 24-hour format time (for times after noon)
- 1:28:14 time in hours, minutes, and seconds
- - equivalent to 0
-
- where hour 0 is midnight at the start of the day, and hour 24
- is midnight at the end of the day. Any of these forms may be
- followed by the letter w if the given time is local "wall
- clock" time, s if the given time is local "standard" time, or u
- (or g or z) if the given time is universal time; in the absence
- of an indicator, wall clock time is assumed.
-
- SAVE Gives the amount of time to be added to local standard time
- when the rule is in effect. This field has the same format as
- the AT field (although, of course, the w and s suffixes are not
- used).
-
- LETTER/S
- Gives the "variable part" (for example, the "S" or "D" in "EST"
- or "EDT") of time zone abbreviations to be used when this rule
- is in effect. If this field is -, the variable part is null.
-
- A zone line has the form
-
- Zone NAME GMTOFF RULES/SAVE FORMAT [UNTILYEAR [MONTH [DAY [TIME]]]]
-
- For example:
-
- Zone Australia/Adelaide 9:30 Aus CST 1971 Oct 31 2:00
-
- The fields that make up a zone line are:
-
- NAME The name of the time zone. This is the name used in creating the
- time conversion information file for the zone.
-
- GMTOFF
- The amount of time to add to UTC to get standard time in this
- zone. This field has the same format as the AT and SAVE fields
- of rule lines; begin the field with a minus sign if time must be
- subtracted from UTC.
-
- RULES/SAVE
- The name of the rule(s) that apply in the time zone or,
- alternately, an amount of time to add to local standard time. If
- this field is - then standard time always applies in the time
- zone.
-
- FORMAT
- The format for time zone abbreviations in this time zone. The
- pair of characters %s is used to show where the "variable part"
- of the time zone abbreviation goes. Alternately, a slash (/)
- separates standard and daylight abbreviations.
-
- UNTILYEAR [MONTH [DAY [TIME]]]
- The time at which the UTC offset or the rule(s) change for a
- location. It is specified as a year, a month, a day, and a time
- of day. If this is specified, the time zone information is
- generated from the given UTC offset and rule change until the
- time specified. The month, day, and time of day have the same
- format as the IN, ON, and AT fields of a rule; trailing fields
- can be omitted, and default to the earliest possible value for
- the missing fields.
-
- The next line must be a "continuation" line; this has the same
- form as a zone line except that the string "Zone" and the name
- are omitted, as the continuation line will place information
- starting at the time specified as the "until" information in the
- previous line in the file used by the previous line.
- Continuation lines may contain "until" information, just as zone
- lines do, indicating that the next line is a further
- continuation.
-
- A link line has the form
-
- Link LINK-FROM LINK-TO
-
- For example:
-
- Link Europe/Istanbul Asia/Istanbul
-
- The LINK-FROM field should appear as the NAME field in some zone line;
- the LINK-TO field is used as an alternate name for that zone.
-
- Except for continuation lines, lines may appear in any order in the
- input.
-
- Lines in the file that describes leap seconds have the following form:
-
- Leap YEAR MONTH DAY HH:MM:SS CORR R/S
-
- For example:
-
- Leap 1974 Dec 31 23:59:60 + S
-
- The YEAR, MONTH, DAY, and HH:MM:SS fields tell when the leap second
- happened. The CORR field should be "+" if a second was added or "-" if
- a second was skipped. The R/S field should be (an abbreviation of)
- "Stationary" if the leap second time given by the other fields should
- be interpreted as UTC or (an abbreviation of) "Rolling" if the leap
- second time given by the other fields should be interpreted as local
- wall clock time.
-
-EXTENDED EXAMPLE
- Here is an extended example of zic input, intended to illustrate many
- of its features.
-
- # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
- Rule Swiss 1940 only - Nov 2 0:00 1:00 S
- Rule Swiss 1940 only - Dec 31 0:00 0 -
- Rule Swiss 1941 1942 - May Sun>=1 2:00 1:00 S
- Rule Swiss 1941 1942 - Oct Sun>=1 0:00 0
- Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
- Rule EU 1977 only - Sep lastSun 1:00u 0 -
- Rule EU 1978 only - Oct 1 1:00u 0 -
- Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
- Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
- Rule EU 1996 max - Oct lastSun 1:00u 0 -
-
- # Zone NAME GMTOFF RULES FORMAT UNTIL
- Zone Europe/Zurich 0:34:08 - LMT 1848 Sep 12
- 0:29:44 - BMT 1894 Jun
- 1:00 Swiss CE%sT 1981
- 1:00 EU CE%sT
-
- Link Europe/Zurich Switzerland
-
- In this example, the zone is named Europe/Zurich but it has an alias as
- Switzerland. Zurich was 34 minutes and 8 seconds west of GMT until
- 1848-09-12 at 00:00, when the offset changed to 29 minutes and 44
- seconds. After 1894-06-01 at 00:00 Swiss daylight saving rules
- (defined with lines beginning with "Rule Swiss") apply, and the GMT
- offset became one hour. From 1981 to the present, EU daylight saving
- rules have applied, and the UTC offset has remained at one hour.
-
- In 1940, daylight saving time applied from November 2 at 00:00 to
- December 31 at 00:00. In 1941 and 1942, daylight saving time applied
- from the first Sunday in May at 02:00 to the first Sunday in October at
- 00:00. The pre-1981 EU daylight-saving rules have no effect here, but
- are included for completeness. Since 1981, daylight saving has begun
- on the last Sunday in March at 01:00 UTC. Until 1995 it ended the last
- Sunday in September at 01:00 UTC, but this changed to the last Sunday
- in October starting in 1996.
-
- For purposes of display, "LMT" and "BMT" were initially used,
- respectively. Since Swiss rules and later EU rules were applied, the
- display name for the timezone has been CET for standard time and CEST
- for daylight saving time.
-
-NOTES
- For areas with more than two types of local time, you may need to use
- local standard time in the AT field of the earliest transition time's
- rule to ensure that the earliest transition time recorded in the
- compiled file is correct.
-
- If, for a particular zone, a clock advance caused by the start of
- daylight saving coincides with and is equal to a clock retreat caused
- by a change in UTC offset, zic produces a single transition to daylight
- saving at the new UTC offset (without any change in wall clock time).
- To get separate transitions use multiple zone continuation lines
- specifying transition instants using universal time.
-
-FILE
- /usr/local/etc/zoneinfo standard directory used for created
- files
-
-SEE ALSO
- newctime(3), tzfile(5), zdump(8)
-
- ZIC(8)
Copied: vendor/tzcode/2016f/zic.8.txt (from rev 7736, vendor/tzcode/dist/zic.8.txt)
===================================================================
--- vendor/tzcode/2016f/zic.8.txt (rev 0)
+++ vendor/tzcode/2016f/zic.8.txt 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,351 @@
+ZIC(8) System Manager's Manual ZIC(8)
+
+NAME
+ zic - time zone compiler
+
+SYNOPSIS
+ zic [ option ... ] [ filename ... ]
+
+DESCRIPTION
+ Zic reads text from the file(s) named on the command line and creates
+ the time conversion information files specified in this input. If a
+ filename is "-", the standard input is read.
+
+ These options are available:
+
+ --version
+ Output version information and exit.
+
+ -d directory
+ Create time conversion information files in the named directory
+ rather than in the standard directory named below.
+
+ -l timezone
+ Use the given time zone as local time. Zic will act as if the
+ input contained a link line of the form
+
+ Link timezone localtime
+
+ -p timezone
+ Use the given time zone's rules when handling POSIX-format time
+ zone environment variables. Zic will act as if the input
+ contained a link line of the form
+
+ Link timezone posixrules
+
+ -L leapsecondfilename
+ Read leap second information from the file with the given name.
+ If this option is not used, no leap second information appears
+ in output files.
+
+ -v Be more verbose, and complain about the following situations:
+
+ The input specifies a link to a link.
+
+ A year that appears in a data file is outside the range of years
+ representable by time(2) values.
+
+ A time of 24:00 or more appears in the input. Pre-1998 versions
+ of zic prohibit 24:00, and pre-2007 versions prohibit times
+ greater than 24:00.
+
+ A rule goes past the start or end of the month. Pre-2004
+ versions of zic prohibit this.
+
+ The output file does not contain all the information about the
+ long-term future of a zone, because the future cannot be
+ summarized as an extended POSIX TZ string. For example, as of
+ 2013 this problem occurs for Iran's daylight-saving rules for
+ the predicted future, as these rules are based on the Iranian
+ calendar, which cannot be represented.
+
+ The output contains data that may not be handled properly by
+ client code designed for older zic output formats. These
+ compatibility issues affect only time stamps before 1970 or
+ after the start of 2038.
+
+ A time zone abbreviation has fewer than 3 characters. POSIX
+ requires at least 3.
+
+ An output file name contains a byte that is not an ASCII letter,
+ "-", "/", or "_"; or it contains a file name component that
+ contains more than 14 bytes or that starts with "-".
+
+ -s Limit time values stored in output files to values that are the
+ same whether they're taken to be signed or unsigned. You can
+ use this option to generate SVVS-compatible files.
+
+ Input files should be text files, that is, they should be a series of
+ zero or more lines, each ending in a newline byte and containing at
+ most 511 bytes, and without any NUL bytes. The input text's encoding
+ is typically UTF-8 or ASCII; it should have a unibyte representation
+ for the POSIX Portable Character Set (PPCS) <http://pubs.opengroup.org/
+ onlinepubs/9699919799/basedefs/V1_chap06.html> and the encoding's non-
+ unibyte characters should consist entirely of non-PPCS bytes. Non-PPCS
+ characters typically occur only in comments: although output file names
+ and time zone abbreviations can contain nearly any character, other
+ software will work better if these are limited to the restricted syntax
+ described under the -v option.
+
+ Input lines are made up of fields. Fields are separated from one
+ another by one or more white space characters. The white space
+ characters are space, form feed, carriage return, newline, tab, and
+ vertical tab. Leading and trailing white space on input lines is
+ ignored. An unquoted sharp character (#) in the input introduces a
+ comment which extends to the end of the line the sharp character
+ appears on. White space characters and sharp characters may be
+ enclosed in double quotes (") if they're to be used as part of a field.
+ Any line that is blank (after comment stripping) is ignored. Non-blank
+ lines are expected to be of one of three types: rule lines, zone lines,
+ and link lines.
+
+ Names (such as month names) must be in English and are case
+ insensitive. Abbreviations, if used, must be unambiguous in context.
+
+ A rule line has the form
+
+ Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+
+ For example:
+
+ Rule US 1967 1973 - Apr lastSun 2:00 1:00 D
+
+ The fields that make up a rule line are:
+
+ NAME Gives the (arbitrary) name of the set of rules this rule is
+ part of.
+
+ FROM Gives the first year in which the rule applies. Any integer
+ year can be supplied; the proleptic Gregorian calendar is
+ assumed. The word minimum (or an abbreviation) means the
+ minimum year representable as an integer. The word maximum (or
+ an abbreviation) means the maximum year representable as an
+ integer. Rules can describe times that are not representable
+ as time values, with the unrepresentable times ignored; this
+ allows rules to be portable among hosts with differing time
+ value types.
+
+ TO Gives the final year in which the rule applies. In addition to
+ minimum and maximum (as above), the word only (or an
+ abbreviation) may be used to repeat the value of the FROM
+ field.
+
+ TYPE should be "-" and is present for compatibility with older
+ versions of zic in which it could contain year types.
+
+ IN Names the month in which the rule takes effect. Month names
+ may be abbreviated.
+
+ ON Gives the day on which the rule takes effect. Recognized forms
+ include:
+
+ 5 the fifth of the month
+ lastSun the last Sunday in the month
+ lastMon the last Monday in the month
+ Sun>=8 first Sunday on or after the eighth
+ Sun<=25 last Sunday on or before the 25th
+
+ Names of days of the week may be abbreviated or spelled out in
+ full. Note that there must be no spaces within the ON field.
+
+ AT Gives the time of day at which the rule takes effect.
+ Recognized forms include:
+
+ 2 time in hours
+ 2:00 time in hours and minutes
+ 15:00 24-hour format time (for times after noon)
+ 1:28:14 time in hours, minutes, and seconds
+ - equivalent to 0
+
+ where hour 0 is midnight at the start of the day, and hour 24
+ is midnight at the end of the day. Any of these forms may be
+ followed by the letter w if the given time is local "wall
+ clock" time, s if the given time is local "standard" time, or u
+ (or g or z) if the given time is universal time; in the absence
+ of an indicator, wall clock time is assumed. The intent is
+ that a rule line describes the instants when a clock/calendar
+ set to the type of time specified in the AT field would show
+ the specified date and time of day.
+
+ SAVE Gives the amount of time to be added to local standard time
+ when the rule is in effect. This field has the same format as
+ the AT field (although, of course, the w and s suffixes are not
+ used). Only the sum of standard time and this amount matters;
+ for example, zic does not distinguish a 10:30 standard time
+ plus an 0:30 SAVE from a 10:00 standard time plus a 1:00 SAVE.
+
+ LETTER/S
+ Gives the "variable part" (for example, the "S" or "D" in "EST"
+ or "EDT") of time zone abbreviations to be used when this rule
+ is in effect. If this field is "-", the variable part is null.
+
+ A zone line has the form
+
+ Zone NAME GMTOFF RULES/SAVE FORMAT [UNTILYEAR [MONTH [DAY [TIME]]]]
+
+ For example:
+
+ Zone Australia/Adelaide 9:30 Aus AC%sT 1971 Oct 31 2:00
+
+ The fields that make up a zone line are:
+
+ NAME The name of the time zone. This is the name used in creating the
+ time conversion information file for the zone. It should not
+ contain a file name component "." or ".."; a file name component
+ is a maximal substring that does not contain "/".
+
+ GMTOFF
+ The amount of time to add to UT to get standard time in this
+ zone. This field has the same format as the AT and SAVE fields
+ of rule lines; begin the field with a minus sign if time must be
+ subtracted from UT.
+
+ RULES/SAVE
+ The name of the rule(s) that apply in the time zone or,
+ alternately, an amount of time to add to local standard time. If
+ this field is - then standard time always applies in the time
+ zone. When an amount of time is given, only the sum of standard
+ time and this amount matters.
+
+ FORMAT
+ The format for time zone abbreviations in this time zone. The
+ pair of characters %s is used to show where the "variable part"
+ of the time zone abbreviation goes. Alternately, a format can
+ use the pair of characters %z to stand for the UTC offset in the
+ form +-hh, +-hhmm, or +-hhmmss, using the shortest form that does
+ not lose information, where hh, mm, and ss are the hours,
+ minutes, and seconds east (+) or west (-) of UTC. Alternately, a
+ slash (/) separates standard and daylight abbreviations. To
+ conform to POSIX, a time zone abbreviation should contain only
+ alphanumeric ASCII characters, "+" and "-".
+
+ UNTILYEAR [MONTH [DAY [TIME]]]
+ The time at which the UT offset or the rule(s) change for a
+ location. It is specified as a year, a month, a day, and a time
+ of day. If this is specified, the time zone information is
+ generated from the given UT offset and rule change until the time
+ specified, which is interpreted using the rules in effect just
+ before the transition. The month, day, and time of day have the
+ same format as the IN, ON, and AT fields of a rule; trailing
+ fields can be omitted, and default to the earliest possible value
+ for the missing fields.
+
+ The next line must be a "continuation" line; this has the same
+ form as a zone line except that the string "Zone" and the name
+ are omitted, as the continuation line will place information
+ starting at the time specified as the "until" information in the
+ previous line in the file used by the previous line.
+ Continuation lines may contain "until" information, just as zone
+ lines do, indicating that the next line is a further
+ continuation.
+
+ If a zone changes at the same instant that a rule would otherwise take
+ effect in the earlier zone or continuation line, the rule is ignored.
+ In a single zone it is an error if two rules take effect at the same
+ instant, or if two zone changes take effect at the same instant.
+
+ A link line has the form
+
+ Link TARGET LINK-NAME
+
+ For example:
+
+ Link Europe/Istanbul Asia/Istanbul
+
+ The TARGET field should appear as the NAME field in some zone line.
+ The LINK-NAME field is used as an alternate name for that zone; it has
+ the same syntax as a zone line's NAME field.
+
+ Except for continuation lines, lines may appear in any order in the
+ input. However, the behavior is unspecified if multiple zone or link
+ lines define the same name, or if the source of one link line is the
+ target of another.
+
+ Lines in the file that describes leap seconds have the following form:
+
+ Leap YEAR MONTH DAY HH:MM:SS CORR R/S
+
+ For example:
+
+ Leap 1974 Dec 31 23:59:60 + S
+
+ The YEAR, MONTH, DAY, and HH:MM:SS fields tell when the leap second
+ happened. The CORR field should be "+" if a second was added or "-" if
+ a second was skipped. The R/S field should be (an abbreviation of)
+ "Stationary" if the leap second time given by the other fields should
+ be interpreted as UTC or (an abbreviation of) "Rolling" if the leap
+ second time given by the other fields should be interpreted as local
+ wall clock time.
+
+EXTENDED EXAMPLE
+ Here is an extended example of zic input, intended to illustrate many
+ of its features.
+
+ # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S
+ Rule Swiss 1941 1942 - May Mon>=1 1:00 1:00 S
+ Rule Swiss 1941 1942 - Oct Mon>=1 2:00 0 -
+ Rule EU 1977 1980 - Apr Sun>=1 1:00u 1:00 S
+ Rule EU 1977 only - Sep lastSun 1:00u 0 -
+ Rule EU 1978 only - Oct 1 1:00u 0 -
+ Rule EU 1979 1995 - Sep lastSun 1:00u 0 -
+ Rule EU 1981 max - Mar lastSun 1:00u 1:00 S
+ Rule EU 1996 max - Oct lastSun 1:00u 0 -
+
+ # Zone NAME GMTOFF RULES/SAVE FORMAT UNTIL
+ Zone Europe/Zurich 0:34:08 - LMT 1853 Jul 16
+ 0:29:46 - BMT 1894 Jun
+ 1:00 Swiss CE%sT 1981
+ 1:00 EU CE%sT
+
+ Link Europe/Zurich Switzerland
+
+ In this example, the zone is named Europe/Zurich but it has an alias as
+ Switzerland. This example says that Zurich was 34 minutes and 8
+ seconds west of UT until 1853-07-16 at 00:00, when the legal offset was
+ changed to 7o26'22.50''; although this works out to 0:29:45.50, the
+ input format cannot represent fractional seconds so it is rounded here.
+ After 1894-06-01 at 00:00 Swiss daylight saving rules (defined with
+ lines beginning with "Rule Swiss") apply, and the UT offset became one
+ hour. From 1981 to the present, EU daylight saving rules have applied,
+ and the UTC offset has remained at one hour.
+
+ In 1941 and 1942, daylight saving time applied from the first Monday in
+ May at 01:00 to the first Monday in October at 02:00. The pre-1981 EU
+ daylight-saving rules have no effect here, but are included for
+ completeness. Since 1981, daylight saving has begun on the last Sunday
+ in March at 01:00 UTC. Until 1995 it ended the last Sunday in
+ September at 01:00 UTC, but this changed to the last Sunday in October
+ starting in 1996.
+
+ For purposes of display, "LMT" and "BMT" were initially used,
+ respectively. Since Swiss rules and later EU rules were applied, the
+ display name for the time zone has been CET for standard time and CEST
+ for daylight saving time.
+
+NOTES
+ For areas with more than two types of local time, you may need to use
+ local standard time in the AT field of the earliest transition time's
+ rule to ensure that the earliest transition time recorded in the
+ compiled file is correct.
+
+ If, for a particular zone, a clock advance caused by the start of
+ daylight saving coincides with and is equal to a clock retreat caused
+ by a change in UT offset, zic produces a single transition to daylight
+ saving at the new UT offset (without any change in wall clock time).
+ To get separate transitions use multiple zone continuation lines
+ specifying transition instants using universal time.
+
+ Time stamps well before the Big Bang are silently omitted from the
+ output. This works around bugs in software that mishandles large
+ negative time stamps. Call it sour grapes, but pre-Big-Bang time
+ stamps are physically suspect anyway. The pre-Big-Bang cutoff time is
+ approximate and may change in future versions.
+
+FILE
+ /usr/local/etc/zoneinfo standard directory used for created
+ files
+
+SEE ALSO
+ newctime(3), tzfile(5), zdump(8)
+
+ ZIC(8)
Deleted: vendor/tzcode/2016f/zic.c
===================================================================
--- vendor/tzcode/dist/zic.c 2016-08-15 01:49:33 UTC (rev 7735)
+++ vendor/tzcode/2016f/zic.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -1,2632 +0,0 @@
-/*
-** This file is in the public domain, so clarified as of
-** 2006-07-17 by Arthur David Olson.
-*/
-
-#include "version.h"
-#include "private.h"
-#include "locale.h"
-#include "tzfile.h"
-
-#define ZIC_VERSION '2'
-
-typedef int_fast64_t zic_t;
-
-#ifndef ZIC_MAX_ABBR_LEN_WO_WARN
-#define ZIC_MAX_ABBR_LEN_WO_WARN 6
-#endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
-
-#if HAVE_SYS_STAT_H
-#include "sys/stat.h"
-#endif
-#ifdef S_IRUSR
-#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
-#else
-#define MKDIR_UMASK 0755
-#endif
-
-/*
-** On some ancient hosts, predicates like `isspace(C)' are defined
-** only if isascii(C) || C == EOF. Modern hosts obey the C Standard,
-** which says they are defined only if C == ((unsigned char) C) || C == EOF.
-** Neither the C Standard nor Posix require that `isascii' exist.
-** For portability, we check both ancient and modern requirements.
-** If isascii is not defined, the isascii check succeeds trivially.
-*/
-#include "ctype.h"
-#ifndef isascii
-#define isascii(x) 1
-#endif
-
-#define OFFSET_STRLEN_MAXIMUM (7 + INT_STRLEN_MAXIMUM(long))
-#define RULE_STRLEN_MAXIMUM 8 /* "Mdd.dd.d" */
-
-#define end(cp) (strchr((cp), '\0'))
-
-struct rule {
- const char * r_filename;
- int r_linenum;
- const char * r_name;
-
- int r_loyear; /* for example, 1986 */
- int r_hiyear; /* for example, 1986 */
- const char * r_yrtype;
- int r_lowasnum;
- int r_hiwasnum;
-
- int r_month; /* 0..11 */
-
- int r_dycode; /* see below */
- int r_dayofmonth;
- int r_wday;
-
- long r_tod; /* time from midnight */
- int r_todisstd; /* above is standard time if TRUE */
- /* or wall clock time if FALSE */
- int r_todisgmt; /* above is GMT if TRUE */
- /* or local time if FALSE */
- long r_stdoff; /* offset from standard time */
- const char * r_abbrvar; /* variable part of abbreviation */
-
- int r_todo; /* a rule to do (used in outzone) */
- zic_t r_temp; /* used in outzone */
-};
-
-/*
-** r_dycode r_dayofmonth r_wday
-*/
-
-#define DC_DOM 0 /* 1..31 */ /* unused */
-#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
-#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
-
-struct zone {
- const char * z_filename;
- int z_linenum;
-
- const char * z_name;
- long z_gmtoff;
- const char * z_rule;
- const char * z_format;
-
- long z_stdoff;
-
- struct rule * z_rules;
- int z_nrules;
-
- struct rule z_untilrule;
- zic_t z_untiltime;
-};
-
-extern int getopt(int argc, char * const argv[],
- const char * options);
-extern int link(const char * fromname, const char * toname);
-extern char * optarg;
-extern int optind;
-
-static void addtt(zic_t starttime, int type);
-static int addtype(long gmtoff, const char * abbr, int isdst,
- int ttisstd, int ttisgmt);
-static void leapadd(zic_t t, int positive, int rolling, int count);
-static void adjleap(void);
-static void associate(void);
-static void dolink(const char * fromfield, const char * tofield);
-static long eitol(int i);
-static char ** getfields(char * buf);
-static long gethms(const char * string, const char * errstrng,
- int signable);
-static void infile(const char * filename);
-static void inleap(char ** fields, int nfields);
-static void inlink(char ** fields, int nfields);
-static void inrule(char ** fields, int nfields);
-static int inzcont(char ** fields, int nfields);
-static int inzone(char ** fields, int nfields);
-static int inzsub(char ** fields, int nfields, int iscont);
-static int itsdir(const char * name);
-static int lowerit(int c);
-static int mkdirs(char * filename);
-static void newabbr(const char * abbr);
-static long oadd(long t1, long t2);
-static void outzone(const struct zone * zp, int ntzones);
-static zic_t rpytime(const struct rule * rp, int wantedy);
-static void rulesub(struct rule * rp,
- const char * loyearp, const char * hiyearp,
- const char * typep, const char * monthp,
- const char * dayp, const char * timep);
-static zic_t tadd(zic_t t1, long t2);
-static int yearistype(int year, const char * type);
-
-static int charcnt;
-static int errors;
-static const char * filename;
-static int leapcnt;
-static int leapseen;
-static int leapminyear;
-static int leapmaxyear;
-static int linenum;
-static int max_abbrvar_len;
-static int max_format_len;
-static int max_year;
-static int min_year;
-static int noise;
-static const char * rfilename;
-static int rlinenum;
-static const char * progname;
-static int timecnt;
-static int typecnt;
-
-/*
-** Line codes.
-*/
-
-#define LC_RULE 0
-#define LC_ZONE 1
-#define LC_LINK 2
-#define LC_LEAP 3
-
-/*
-** Which fields are which on a Zone line.
-*/
-
-#define ZF_NAME 1
-#define ZF_GMTOFF 2
-#define ZF_RULE 3
-#define ZF_FORMAT 4
-#define ZF_TILYEAR 5
-#define ZF_TILMONTH 6
-#define ZF_TILDAY 7
-#define ZF_TILTIME 8
-#define ZONE_MINFIELDS 5
-#define ZONE_MAXFIELDS 9
-
-/*
-** Which fields are which on a Zone continuation line.
-*/
-
-#define ZFC_GMTOFF 0
-#define ZFC_RULE 1
-#define ZFC_FORMAT 2
-#define ZFC_TILYEAR 3
-#define ZFC_TILMONTH 4
-#define ZFC_TILDAY 5
-#define ZFC_TILTIME 6
-#define ZONEC_MINFIELDS 3
-#define ZONEC_MAXFIELDS 7
-
-/*
-** Which files are which on a Rule line.
-*/
-
-#define RF_NAME 1
-#define RF_LOYEAR 2
-#define RF_HIYEAR 3
-#define RF_COMMAND 4
-#define RF_MONTH 5
-#define RF_DAY 6
-#define RF_TOD 7
-#define RF_STDOFF 8
-#define RF_ABBRVAR 9
-#define RULE_FIELDS 10
-
-/*
-** Which fields are which on a Link line.
-*/
-
-#define LF_FROM 1
-#define LF_TO 2
-#define LINK_FIELDS 3
-
-/*
-** Which fields are which on a Leap line.
-*/
-
-#define LP_YEAR 1
-#define LP_MONTH 2
-#define LP_DAY 3
-#define LP_TIME 4
-#define LP_CORR 5
-#define LP_ROLL 6
-#define LEAP_FIELDS 7
-
-/*
-** Year synonyms.
-*/
-
-#define YR_MINIMUM 0
-#define YR_MAXIMUM 1
-#define YR_ONLY 2
-
-static struct rule * rules;
-static int nrules; /* number of rules */
-
-static struct zone * zones;
-static int nzones; /* number of zones */
-
-struct link {
- const char * l_filename;
- int l_linenum;
- const char * l_from;
- const char * l_to;
-};
-
-static struct link * links;
-static int nlinks;
-
-struct lookup {
- const char * l_word;
- const int l_value;
-};
-
-static struct lookup const * byword(const char * string,
- const struct lookup * lp);
-
-static struct lookup const line_codes[] = {
- { "Rule", LC_RULE },
- { "Zone", LC_ZONE },
- { "Link", LC_LINK },
- { "Leap", LC_LEAP },
- { NULL, 0}
-};
-
-static struct lookup const mon_names[] = {
- { "January", TM_JANUARY },
- { "February", TM_FEBRUARY },
- { "March", TM_MARCH },
- { "April", TM_APRIL },
- { "May", TM_MAY },
- { "June", TM_JUNE },
- { "July", TM_JULY },
- { "August", TM_AUGUST },
- { "September", TM_SEPTEMBER },
- { "October", TM_OCTOBER },
- { "November", TM_NOVEMBER },
- { "December", TM_DECEMBER },
- { NULL, 0 }
-};
-
-static struct lookup const wday_names[] = {
- { "Sunday", TM_SUNDAY },
- { "Monday", TM_MONDAY },
- { "Tuesday", TM_TUESDAY },
- { "Wednesday", TM_WEDNESDAY },
- { "Thursday", TM_THURSDAY },
- { "Friday", TM_FRIDAY },
- { "Saturday", TM_SATURDAY },
- { NULL, 0 }
-};
-
-static struct lookup const lasts[] = {
- { "last-Sunday", TM_SUNDAY },
- { "last-Monday", TM_MONDAY },
- { "last-Tuesday", TM_TUESDAY },
- { "last-Wednesday", TM_WEDNESDAY },
- { "last-Thursday", TM_THURSDAY },
- { "last-Friday", TM_FRIDAY },
- { "last-Saturday", TM_SATURDAY },
- { NULL, 0 }
-};
-
-static struct lookup const begin_years[] = {
- { "minimum", YR_MINIMUM },
- { "maximum", YR_MAXIMUM },
- { NULL, 0 }
-};
-
-static struct lookup const end_years[] = {
- { "minimum", YR_MINIMUM },
- { "maximum", YR_MAXIMUM },
- { "only", YR_ONLY },
- { NULL, 0 }
-};
-
-static struct lookup const leap_types[] = {
- { "Rolling", TRUE },
- { "Stationary", FALSE },
- { NULL, 0 }
-};
-
-static const int len_months[2][MONSPERYEAR] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-static const int len_years[2] = {
- DAYSPERNYEAR, DAYSPERLYEAR
-};
-
-static struct attype {
- zic_t at;
- unsigned char type;
-} attypes[TZ_MAX_TIMES];
-static long gmtoffs[TZ_MAX_TYPES];
-static char isdsts[TZ_MAX_TYPES];
-static unsigned char abbrinds[TZ_MAX_TYPES];
-static char ttisstds[TZ_MAX_TYPES];
-static char ttisgmts[TZ_MAX_TYPES];
-static char chars[TZ_MAX_CHARS];
-static zic_t trans[TZ_MAX_LEAPS];
-static long corr[TZ_MAX_LEAPS];
-static char roll[TZ_MAX_LEAPS];
-
-/*
-** Memory allocation.
-*/
-
-static ATTRIBUTE_PURE void *
-memcheck(void *const ptr)
-{
- if (ptr == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Memory exhausted: %s\n"),
- progname, e);
- exit(EXIT_FAILURE);
- }
- return ptr;
-}
-
-#define emalloc(size) memcheck(malloc(size))
-#define erealloc(ptr, size) memcheck(realloc(ptr, size))
-#define ecpyalloc(ptr) memcheck(icpyalloc(ptr))
-#define ecatalloc(oldp, newp) memcheck(icatalloc((oldp), (newp)))
-
-/*
-** Error handling.
-*/
-
-static void
-eats(const char *const name, const int num, const char *const rname,
- const int rnum)
-{
- filename = name;
- linenum = num;
- rfilename = rname;
- rlinenum = rnum;
-}
-
-static void
-eat(const char *const name, const int num)
-{
- eats(name, num, NULL, -1);
-}
-
-static void
-error(const char *const string)
-{
- /*
- ** Match the format of "cc" to allow sh users to
- ** zic ... 2>&1 | error -t "*" -v
- ** on BSD systems.
- */
- (void) fprintf(stderr, _("\"%s\", line %d: %s"),
- filename, linenum, string);
- if (rfilename != NULL)
- (void) fprintf(stderr, _(" (rule from \"%s\", line %d)"),
- rfilename, rlinenum);
- (void) fprintf(stderr, "\n");
- ++errors;
-}
-
-static void
-warning(const char *const string)
-{
- char * cp;
-
- cp = ecpyalloc(_("warning: "));
- cp = ecatalloc(cp, string);
- error(cp);
- free(cp);
- --errors;
-}
-
-static void
-usage(FILE *stream, int status)
-{
- (void) fprintf(stream, _("%s: usage is %s \
-[ --version ] [ --help ] [ -v ] [ -l localtime ] [ -p posixrules ] \\\n\
-\t[ -d directory ] [ -L leapseconds ] [ -y yearistype ] [ filename ... ]\n\
-\n\
-Report bugs to tz at iana.org.\n"),
- progname, progname);
- exit(status);
-}
-
-static const char * psxrules;
-static const char * lcltime;
-static const char * directory;
-static const char * leapsec;
-static const char * yitcommand;
-
-int
-main(int argc, char **argv)
-{
- register int i;
- register int j;
- register int c;
-
-#ifdef unix
- (void) umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
-#endif /* defined unix */
-#if HAVE_GETTEXT
- (void) setlocale(LC_ALL, "");
-#ifdef TZ_DOMAINDIR
- (void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
-#endif /* defined TEXTDOMAINDIR */
- (void) textdomain(TZ_DOMAIN);
-#endif /* HAVE_GETTEXT */
- progname = argv[0];
- if (TYPE_BIT(zic_t) < 64) {
- (void) fprintf(stderr, "%s: %s\n", progname,
- _("wild compilation-time specification of zic_t"));
- exit(EXIT_FAILURE);
- }
- for (i = 1; i < argc; ++i)
- if (strcmp(argv[i], "--version") == 0) {
- (void) printf("zic %s%s\n", PKGVERSION, TZVERSION);
- exit(EXIT_SUCCESS);
- } else if (strcmp(argv[i], "--help") == 0) {
- usage(stdout, EXIT_SUCCESS);
- }
- while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
- switch (c) {
- default:
- usage(stderr, EXIT_FAILURE);
- case 'd':
- if (directory == NULL)
- directory = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -d option specified\n"),
- progname);
- exit(EXIT_FAILURE);
- }
- break;
- case 'l':
- if (lcltime == NULL)
- lcltime = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -l option specified\n"),
- progname);
- exit(EXIT_FAILURE);
- }
- break;
- case 'p':
- if (psxrules == NULL)
- psxrules = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -p option specified\n"),
- progname);
- exit(EXIT_FAILURE);
- }
- break;
- case 'y':
- if (yitcommand == NULL)
- yitcommand = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -y option specified\n"),
- progname);
- exit(EXIT_FAILURE);
- }
- break;
- case 'L':
- if (leapsec == NULL)
- leapsec = optarg;
- else {
- (void) fprintf(stderr,
-_("%s: More than one -L option specified\n"),
- progname);
- exit(EXIT_FAILURE);
- }
- break;
- case 'v':
- noise = TRUE;
- break;
- case 's':
- (void) printf("%s: -s ignored\n", progname);
- break;
- }
- if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
- usage(stderr, EXIT_FAILURE); /* usage message by request */
- if (directory == NULL)
- directory = TZDIR;
- if (yitcommand == NULL)
- yitcommand = "yearistype";
-
- if (optind < argc && leapsec != NULL) {
- infile(leapsec);
- adjleap();
- }
-
- for (i = optind; i < argc; ++i)
- infile(argv[i]);
- if (errors)
- exit(EXIT_FAILURE);
- associate();
- for (i = 0; i < nzones; i = j) {
- /*
- ** Find the next non-continuation zone entry.
- */
- for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
- continue;
- outzone(&zones[i], j - i);
- }
- /*
- ** Make links.
- */
- for (i = 0; i < nlinks; ++i) {
- eat(links[i].l_filename, links[i].l_linenum);
- dolink(links[i].l_from, links[i].l_to);
- if (noise)
- for (j = 0; j < nlinks; ++j)
- if (strcmp(links[i].l_to,
- links[j].l_from) == 0)
- warning(_("link to link"));
- }
- if (lcltime != NULL) {
- eat("command line", 1);
- dolink(lcltime, TZDEFAULT);
- }
- if (psxrules != NULL) {
- eat("command line", 1);
- dolink(psxrules, TZDEFRULES);
- }
- return (errors == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
-}
-
-static void
-dolink(const char *const fromfield, const char *const tofield)
-{
- register char * fromname;
- register char * toname;
-
- if (fromfield[0] == '/')
- fromname = ecpyalloc(fromfield);
- else {
- fromname = ecpyalloc(directory);
- fromname = ecatalloc(fromname, "/");
- fromname = ecatalloc(fromname, fromfield);
- }
- if (tofield[0] == '/')
- toname = ecpyalloc(tofield);
- else {
- toname = ecpyalloc(directory);
- toname = ecatalloc(toname, "/");
- toname = ecatalloc(toname, tofield);
- }
- /*
- ** We get to be careful here since
- ** there's a fair chance of root running us.
- */
- if (!itsdir(toname))
- (void) remove(toname);
- if (link(fromname, toname) != 0) {
- int result;
-
- if (mkdirs(toname) != 0)
- exit(EXIT_FAILURE);
-
- result = link(fromname, toname);
-#if HAVE_SYMLINK
- if (result != 0 &&
- access(fromname, F_OK) == 0 &&
- !itsdir(fromname)) {
- const char *s = tofield;
- register char * symlinkcontents = NULL;
-
- while ((s = strchr(s+1, '/')) != NULL)
- symlinkcontents =
- ecatalloc(symlinkcontents,
- "../");
- symlinkcontents =
- ecatalloc(symlinkcontents,
- fromname);
- result = symlink(symlinkcontents,
- toname);
- if (result == 0)
-warning(_("hard link failed, symbolic link used"));
- free(symlinkcontents);
- }
-#endif /* HAVE_SYMLINK */
- if (result != 0) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr,
- _("%s: Can't link from %s to %s: %s\n"),
- progname, fromname, toname, e);
- exit(EXIT_FAILURE);
- }
- }
- free(fromname);
- free(toname);
-}
-
-#define TIME_T_BITS_IN_FILE 64
-
-static const zic_t min_time = (zic_t) -1 << (TIME_T_BITS_IN_FILE - 1);
-static const zic_t max_time = -1 - ((zic_t) -1 << (TIME_T_BITS_IN_FILE - 1));
-
-static int
-itsdir(const char *const name)
-{
- register char * myname;
- register int accres;
-
- myname = ecpyalloc(name);
- myname = ecatalloc(myname, "/.");
- accres = access(myname, F_OK);
- free(myname);
- return accres == 0;
-}
-
-/*
-** Associate sets of rules with zones.
-*/
-
-/*
-** Sort by rule name.
-*/
-
-static int
-rcomp(const void *cp1, const void *cp2)
-{
- return strcmp(((const struct rule *) cp1)->r_name,
- ((const struct rule *) cp2)->r_name);
-}
-
-static void
-associate(void)
-{
- register struct zone * zp;
- register struct rule * rp;
- register int base, out;
- register int i, j;
-
- if (nrules != 0) {
- (void) qsort(rules, nrules, sizeof *rules, rcomp);
- for (i = 0; i < nrules - 1; ++i) {
- if (strcmp(rules[i].r_name,
- rules[i + 1].r_name) != 0)
- continue;
- if (strcmp(rules[i].r_filename,
- rules[i + 1].r_filename) == 0)
- continue;
- eat(rules[i].r_filename, rules[i].r_linenum);
- warning(_("same rule name in multiple files"));
- eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
- warning(_("same rule name in multiple files"));
- for (j = i + 2; j < nrules; ++j) {
- if (strcmp(rules[i].r_name,
- rules[j].r_name) != 0)
- break;
- if (strcmp(rules[i].r_filename,
- rules[j].r_filename) == 0)
- continue;
- if (strcmp(rules[i + 1].r_filename,
- rules[j].r_filename) == 0)
- continue;
- break;
- }
- i = j - 1;
- }
- }
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- zp->z_rules = NULL;
- zp->z_nrules = 0;
- }
- for (base = 0; base < nrules; base = out) {
- rp = &rules[base];
- for (out = base + 1; out < nrules; ++out)
- if (strcmp(rp->r_name, rules[out].r_name) != 0)
- break;
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (strcmp(zp->z_rule, rp->r_name) != 0)
- continue;
- zp->z_rules = rp;
- zp->z_nrules = out - base;
- }
- }
- for (i = 0; i < nzones; ++i) {
- zp = &zones[i];
- if (zp->z_nrules == 0) {
- /*
- ** Maybe we have a local standard time offset.
- */
- eat(zp->z_filename, zp->z_linenum);
- zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
- TRUE);
- /*
- ** Note, though, that if there's no rule,
- ** a '%s' in the format is a bad thing.
- */
- if (strchr(zp->z_format, '%') != 0)
- error(_("%s in ruleless zone"));
- }
- }
- if (errors)
- exit(EXIT_FAILURE);
-}
-
-static void
-infile(const char *name)
-{
- register FILE * fp;
- register char ** fields;
- register char * cp;
- register const struct lookup * lp;
- register int nfields;
- register int wantcont;
- register int num;
- char buf[BUFSIZ];
-
- if (strcmp(name, "-") == 0) {
- name = _("standard input");
- fp = stdin;
- } else if ((fp = fopen(name, "r")) == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't open %s: %s\n"),
- progname, name, e);
- exit(EXIT_FAILURE);
- }
- wantcont = FALSE;
- for (num = 1; ; ++num) {
- eat(name, num);
- if (fgets(buf, sizeof buf, fp) != buf)
- break;
- cp = strchr(buf, '\n');
- if (cp == NULL) {
- error(_("line too long"));
- exit(EXIT_FAILURE);
- }
- *cp = '\0';
- fields = getfields(buf);
- nfields = 0;
- while (fields[nfields] != NULL) {
- static char nada;
-
- if (strcmp(fields[nfields], "-") == 0)
- fields[nfields] = &nada;
- ++nfields;
- }
- if (nfields == 0) {
- /* nothing to do */
- } else if (wantcont) {
- wantcont = inzcont(fields, nfields);
- } else {
- lp = byword(fields[0], line_codes);
- if (lp == NULL)
- error(_("input line of unknown type"));
- else switch ((int) (lp->l_value)) {
- case LC_RULE:
- inrule(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_ZONE:
- wantcont = inzone(fields, nfields);
- break;
- case LC_LINK:
- inlink(fields, nfields);
- wantcont = FALSE;
- break;
- case LC_LEAP:
- if (name != leapsec)
- (void) fprintf(stderr,
-_("%s: Leap line in non leap seconds file %s\n"),
- progname, name);
- else inleap(fields, nfields);
- wantcont = FALSE;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
-_("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- exit(EXIT_FAILURE);
- }
- }
- free(fields);
- }
- if (ferror(fp)) {
- (void) fprintf(stderr, _("%s: Error reading %s\n"),
- progname, filename);
- exit(EXIT_FAILURE);
- }
- if (fp != stdin && fclose(fp)) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Error closing %s: %s\n"),
- progname, filename, e);
- exit(EXIT_FAILURE);
- }
- if (wantcont)
- error(_("expected continuation line not found"));
-}
-
-/*
-** Convert a string of one of the forms
-** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
-** into a number of seconds.
-** A null string maps to zero.
-** Call error with errstring and return zero on errors.
-*/
-
-static long
-gethms(const char *string, const char *const errstring, const int signable)
-{
- long hh;
- int mm, ss, sign;
-
- if (string == NULL || *string == '\0')
- return 0;
- if (!signable)
- sign = 1;
- else if (*string == '-') {
- sign = -1;
- ++string;
- } else sign = 1;
- if (sscanf(string, scheck(string, "%ld"), &hh) == 1)
- mm = ss = 0;
- else if (sscanf(string, scheck(string, "%ld:%d"), &hh, &mm) == 2)
- ss = 0;
- else if (sscanf(string, scheck(string, "%ld:%d:%d"),
- &hh, &mm, &ss) != 3) {
- error(errstring);
- return 0;
- }
- if (hh < 0 ||
- mm < 0 || mm >= MINSPERHOUR ||
- ss < 0 || ss > SECSPERMIN) {
- error(errstring);
- return 0;
- }
- if (LONG_MAX / SECSPERHOUR < hh) {
- error(_("time overflow"));
- return 0;
- }
- if (noise && hh == HOURSPERDAY && mm == 0 && ss == 0)
- warning(_("24:00 not handled by pre-1998 versions of zic"));
- if (noise && (hh > HOURSPERDAY ||
- (hh == HOURSPERDAY && (mm != 0 || ss != 0))))
-warning(_("values over 24 hours not handled by pre-2007 versions of zic"));
- return oadd(eitol(sign) * hh * eitol(SECSPERHOUR),
- eitol(sign) * (eitol(mm) * eitol(SECSPERMIN) + eitol(ss)));
-}
-
-static void
-inrule(register char **const fields, const int nfields)
-{
- static struct rule r;
-
- if (nfields != RULE_FIELDS) {
- error(_("wrong number of fields on Rule line"));
- return;
- }
- if (*fields[RF_NAME] == '\0') {
- error(_("nameless rule"));
- return;
- }
- r.r_filename = filename;
- r.r_linenum = linenum;
- r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), TRUE);
- rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
- fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
- r.r_name = ecpyalloc(fields[RF_NAME]);
- r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
- if (max_abbrvar_len < strlen(r.r_abbrvar))
- max_abbrvar_len = strlen(r.r_abbrvar);
- rules = erealloc(rules, (nrules + 1) * sizeof *rules);
- rules[nrules++] = r;
-}
-
-static int
-inzone(register char **const fields, const int nfields)
-{
- register int i;
- static char * buf;
-
- if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
- error(_("wrong number of fields on Zone line"));
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
- buf = erealloc(buf, 132 + strlen(TZDEFAULT));
- (void) sprintf(buf,
-_("\"Zone %s\" line and -l option are mutually exclusive"),
- TZDEFAULT);
- error(buf);
- return FALSE;
- }
- if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
- buf = erealloc(buf, 132 + strlen(TZDEFRULES));
- (void) sprintf(buf,
-_("\"Zone %s\" line and -p option are mutually exclusive"),
- TZDEFRULES);
- error(buf);
- return FALSE;
- }
- for (i = 0; i < nzones; ++i)
- if (zones[i].z_name != NULL &&
- strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
- buf = erealloc(buf,
- (132 + strlen(fields[ZF_NAME])
- + strlen(zones[i].z_filename)));
- (void) sprintf(buf,
-_("duplicate zone name %s (file \"%s\", line %d)"),
- fields[ZF_NAME],
- zones[i].z_filename,
- zones[i].z_linenum);
- error(buf);
- return FALSE;
- }
- return inzsub(fields, nfields, FALSE);
-}
-
-static int
-inzcont(register char **const fields, const int nfields)
-{
- if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
- error(_("wrong number of fields on Zone continuation line"));
- return FALSE;
- }
- return inzsub(fields, nfields, TRUE);
-}
-
-static int
-inzsub(register char **const fields, const int nfields, const int iscont)
-{
- register char * cp;
- static struct zone z;
- register int i_gmtoff, i_rule, i_format;
- register int i_untilyear, i_untilmonth;
- register int i_untilday, i_untiltime;
- register int hasuntil;
-
- if (iscont) {
- i_gmtoff = ZFC_GMTOFF;
- i_rule = ZFC_RULE;
- i_format = ZFC_FORMAT;
- i_untilyear = ZFC_TILYEAR;
- i_untilmonth = ZFC_TILMONTH;
- i_untilday = ZFC_TILDAY;
- i_untiltime = ZFC_TILTIME;
- z.z_name = NULL;
- } else {
- i_gmtoff = ZF_GMTOFF;
- i_rule = ZF_RULE;
- i_format = ZF_FORMAT;
- i_untilyear = ZF_TILYEAR;
- i_untilmonth = ZF_TILMONTH;
- i_untilday = ZF_TILDAY;
- i_untiltime = ZF_TILTIME;
- z.z_name = ecpyalloc(fields[ZF_NAME]);
- }
- z.z_filename = filename;
- z.z_linenum = linenum;
- z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UTC offset"), TRUE);
- if ((cp = strchr(fields[i_format], '%')) != 0) {
- if (*++cp != 's' || strchr(cp, '%') != 0) {
- error(_("invalid abbreviation format"));
- return FALSE;
- }
- }
- z.z_rule = ecpyalloc(fields[i_rule]);
- z.z_format = ecpyalloc(fields[i_format]);
- if (max_format_len < strlen(z.z_format))
- max_format_len = strlen(z.z_format);
- hasuntil = nfields > i_untilyear;
- if (hasuntil) {
- z.z_untilrule.r_filename = filename;
- z.z_untilrule.r_linenum = linenum;
- rulesub(&z.z_untilrule,
- fields[i_untilyear],
- "only",
- "",
- (nfields > i_untilmonth) ?
- fields[i_untilmonth] : "Jan",
- (nfields > i_untilday) ? fields[i_untilday] : "1",
- (nfields > i_untiltime) ? fields[i_untiltime] : "0");
- z.z_untiltime = rpytime(&z.z_untilrule,
- z.z_untilrule.r_loyear);
- if (iscont && nzones > 0 &&
- z.z_untiltime > min_time &&
- z.z_untiltime < max_time &&
- zones[nzones - 1].z_untiltime > min_time &&
- zones[nzones - 1].z_untiltime < max_time &&
- zones[nzones - 1].z_untiltime >= z.z_untiltime) {
- error(_(
-"Zone continuation line end time is not after end time of previous line"
- ));
- return FALSE;
- }
- }
- zones = erealloc(zones, (nzones + 1) * sizeof *zones);
- zones[nzones++] = z;
- /*
- ** If there was an UNTIL field on this line,
- ** there's more information about the zone on the next line.
- */
- return hasuntil;
-}
-
-static void
-inleap(register char ** const fields, const int nfields)
-{
- register const char * cp;
- register const struct lookup * lp;
- register int i, j;
- int year, month, day;
- long dayoff, tod;
- zic_t t;
-
- if (nfields != LEAP_FIELDS) {
- error(_("wrong number of fields on Leap line"));
- return;
- }
- dayoff = 0;
- cp = fields[LP_YEAR];
- if (sscanf(cp, scheck(cp, "%d"), &year) != 1) {
- /*
- ** Leapin' Lizards!
- */
- error(_("invalid leaping year"));
- return;
- }
- if (!leapseen || leapmaxyear < year)
- leapmaxyear = year;
- if (!leapseen || leapminyear > year)
- leapminyear = year;
- leapseen = TRUE;
- j = EPOCH_YEAR;
- while (j != year) {
- if (year > j) {
- i = len_years[isleap(j)];
- ++j;
- } else {
- --j;
- i = -len_years[isleap(j)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
- error(_("invalid month name"));
- return;
- }
- month = lp->l_value;
- j = TM_JANUARY;
- while (j != month) {
- i = len_months[isleap(year)][j];
- dayoff = oadd(dayoff, eitol(i));
- ++j;
- }
- cp = fields[LP_DAY];
- if (sscanf(cp, scheck(cp, "%d"), &day) != 1 ||
- day <= 0 || day > len_months[isleap(year)][month]) {
- error(_("invalid day of month"));
- return;
- }
- dayoff = oadd(dayoff, eitol(day - 1));
- if (dayoff < 0 && !TYPE_SIGNED(zic_t)) {
- error(_("time before zero"));
- return;
- }
- if (dayoff < min_time / SECSPERDAY) {
- error(_("time too small"));
- return;
- }
- if (dayoff > max_time / SECSPERDAY) {
- error(_("time too large"));
- return;
- }
- t = (zic_t) dayoff * SECSPERDAY;
- tod = gethms(fields[LP_TIME], _("invalid time of day"), FALSE);
- cp = fields[LP_CORR];
- {
- register int positive;
- int count;
-
- if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
- positive = FALSE;
- count = 1;
- } else if (strcmp(cp, "--") == 0) {
- positive = FALSE;
- count = 2;
- } else if (strcmp(cp, "+") == 0) {
- positive = TRUE;
- count = 1;
- } else if (strcmp(cp, "++") == 0) {
- positive = TRUE;
- count = 2;
- } else {
- error(_("illegal CORRECTION field on Leap line"));
- return;
- }
- if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
- error(_(
- "illegal Rolling/Stationary field on Leap line"
- ));
- return;
- }
- leapadd(tadd(t, tod), positive, lp->l_value, count);
- }
-}
-
-static void
-inlink(register char **const fields, const int nfields)
-{
- struct link l;
-
- if (nfields != LINK_FIELDS) {
- error(_("wrong number of fields on Link line"));
- return;
- }
- if (*fields[LF_FROM] == '\0') {
- error(_("blank FROM field on Link line"));
- return;
- }
- if (*fields[LF_TO] == '\0') {
- error(_("blank TO field on Link line"));
- return;
- }
- l.l_filename = filename;
- l.l_linenum = linenum;
- l.l_from = ecpyalloc(fields[LF_FROM]);
- l.l_to = ecpyalloc(fields[LF_TO]);
- links = erealloc(links, (nlinks + 1) * sizeof *links);
- links[nlinks++] = l;
-}
-
-static void
-rulesub(register struct rule *const rp,
- const char *const loyearp,
- const char *const hiyearp,
- const char *const typep,
- const char *const monthp,
- const char *const dayp,
- const char *const timep)
-{
- register const struct lookup * lp;
- register const char * cp;
- register char * dp;
- register char * ep;
-
- if ((lp = byword(monthp, mon_names)) == NULL) {
- error(_("invalid month name"));
- return;
- }
- rp->r_month = lp->l_value;
- rp->r_todisstd = FALSE;
- rp->r_todisgmt = FALSE;
- dp = ecpyalloc(timep);
- if (*dp != '\0') {
- ep = dp + strlen(dp) - 1;
- switch (lowerit(*ep)) {
- case 's': /* Standard */
- rp->r_todisstd = TRUE;
- rp->r_todisgmt = FALSE;
- *ep = '\0';
- break;
- case 'w': /* Wall */
- rp->r_todisstd = FALSE;
- rp->r_todisgmt = FALSE;
- *ep = '\0';
- break;
- case 'g': /* Greenwich */
- case 'u': /* Universal */
- case 'z': /* Zulu */
- rp->r_todisstd = TRUE;
- rp->r_todisgmt = TRUE;
- *ep = '\0';
- break;
- }
- }
- rp->r_tod = gethms(dp, _("invalid time of day"), FALSE);
- free(dp);
- /*
- ** Year work.
- */
- cp = loyearp;
- lp = byword(cp, begin_years);
- rp->r_lowasnum = lp == NULL;
- if (!rp->r_lowasnum) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_loyear = INT_MIN;
- break;
- case YR_MAXIMUM:
- rp->r_loyear = INT_MAX;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- _("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_loyear) != 1) {
- error(_("invalid starting year"));
- return;
- }
- cp = hiyearp;
- lp = byword(cp, end_years);
- rp->r_hiwasnum = lp == NULL;
- if (!rp->r_hiwasnum) switch ((int) lp->l_value) {
- case YR_MINIMUM:
- rp->r_hiyear = INT_MIN;
- break;
- case YR_MAXIMUM:
- rp->r_hiyear = INT_MAX;
- break;
- case YR_ONLY:
- rp->r_hiyear = rp->r_loyear;
- break;
- default: /* "cannot happen" */
- (void) fprintf(stderr,
- _("%s: panic: Invalid l_value %d\n"),
- progname, lp->l_value);
- exit(EXIT_FAILURE);
- } else if (sscanf(cp, scheck(cp, "%d"), &rp->r_hiyear) != 1) {
- error(_("invalid ending year"));
- return;
- }
- if (rp->r_loyear > rp->r_hiyear) {
- error(_("starting year greater than ending year"));
- return;
- }
- if (*typep == '\0')
- rp->r_yrtype = NULL;
- else {
- if (rp->r_loyear == rp->r_hiyear) {
- error(_("typed single year"));
- return;
- }
- rp->r_yrtype = ecpyalloc(typep);
- }
- /*
- ** Day work.
- ** Accept things such as:
- ** 1
- ** last-Sunday
- ** Sun<=20
- ** Sun>=7
- */
- dp = ecpyalloc(dayp);
- if ((lp = byword(dp, lasts)) != NULL) {
- rp->r_dycode = DC_DOWLEQ;
- rp->r_wday = lp->l_value;
- rp->r_dayofmonth = len_months[1][rp->r_month];
- } else {
- if ((ep = strchr(dp, '<')) != 0)
- rp->r_dycode = DC_DOWLEQ;
- else if ((ep = strchr(dp, '>')) != 0)
- rp->r_dycode = DC_DOWGEQ;
- else {
- ep = dp;
- rp->r_dycode = DC_DOM;
- }
- if (rp->r_dycode != DC_DOM) {
- *ep++ = 0;
- if (*ep++ != '=') {
- error(_("invalid day of month"));
- free(dp);
- return;
- }
- if ((lp = byword(dp, wday_names)) == NULL) {
- error(_("invalid weekday name"));
- free(dp);
- return;
- }
- rp->r_wday = lp->l_value;
- }
- if (sscanf(ep, scheck(ep, "%d"), &rp->r_dayofmonth) != 1 ||
- rp->r_dayofmonth <= 0 ||
- (rp->r_dayofmonth > len_months[1][rp->r_month])) {
- error(_("invalid day of month"));
- free(dp);
- return;
- }
- }
- free(dp);
-}
-
-static void
-convert(const long val, char *const buf)
-{
- register int i;
- register int shift;
- unsigned char *const b = (unsigned char *) buf;
-
- for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
- b[i] = val >> shift;
-}
-
-static void
-convert64(const zic_t val, char *const buf)
-{
- register int i;
- register int shift;
- unsigned char *const b = (unsigned char *) buf;
-
- for (i = 0, shift = 56; i < 8; ++i, shift -= 8)
- b[i] = val >> shift;
-}
-
-static void
-puttzcode(const long val, FILE *const fp)
-{
- char buf[4];
-
- convert(val, buf);
- (void) fwrite(buf, sizeof buf, 1, fp);
-}
-
-static void
-puttzcode64(const zic_t val, FILE *const fp)
-{
- char buf[8];
-
- convert64(val, buf);
- (void) fwrite(buf, sizeof buf, 1, fp);
-}
-
-static int
-atcomp(const void *avp, const void *bvp)
-{
- const zic_t a = ((const struct attype *) avp)->at;
- const zic_t b = ((const struct attype *) bvp)->at;
-
- return (a < b) ? -1 : (a > b);
-}
-
-static int
-is32(const zic_t x)
-{
- return INT32_MIN <= x && x <= INT32_MAX;
-}
-
-static void
-writezone(const char *const name, const char *const string)
-{
- register FILE * fp;
- register int i, j;
- register int leapcnt32, leapi32;
- register int timecnt32, timei32;
- register int pass;
- static char * fullname;
- static const struct tzhead tzh0;
- static struct tzhead tzh;
- zic_t ats[TZ_MAX_TIMES];
- unsigned char types[TZ_MAX_TIMES];
-
- /*
- ** Sort.
- */
- if (timecnt > 1)
- (void) qsort(attypes, timecnt, sizeof *attypes, atcomp);
- /*
- ** Optimize.
- */
- {
- int fromi;
- int toi;
-
- toi = 0;
- fromi = 0;
- while (fromi < timecnt && attypes[fromi].at < min_time)
- ++fromi;
- if (isdsts[0] == 0)
- while (fromi < timecnt && attypes[fromi].type == 0)
- ++fromi; /* handled by default rule */
- for ( ; fromi < timecnt; ++fromi) {
- if (toi != 0 && ((attypes[fromi].at +
- gmtoffs[attypes[toi - 1].type]) <=
- (attypes[toi - 1].at + gmtoffs[toi == 1 ? 0
- : attypes[toi - 2].type]))) {
- attypes[toi - 1].type =
- attypes[fromi].type;
- continue;
- }
- if (toi == 0 ||
- attypes[toi - 1].type != attypes[fromi].type)
- attypes[toi++] = attypes[fromi];
- }
- timecnt = toi;
- }
- /*
- ** Transfer.
- */
- for (i = 0; i < timecnt; ++i) {
- ats[i] = attypes[i].at;
- types[i] = attypes[i].type;
- }
- /*
- ** Correct for leap seconds.
- */
- for (i = 0; i < timecnt; ++i) {
- j = leapcnt;
- while (--j >= 0)
- if (ats[i] > trans[j] - corr[j]) {
- ats[i] = tadd(ats[i], corr[j]);
- break;
- }
- }
- /*
- ** Figure out 32-bit-limited starts and counts.
- */
- timecnt32 = timecnt;
- timei32 = 0;
- leapcnt32 = leapcnt;
- leapi32 = 0;
- while (timecnt32 > 0 && !is32(ats[timecnt32 - 1]))
- --timecnt32;
- while (timecnt32 > 0 && !is32(ats[timei32])) {
- --timecnt32;
- ++timei32;
- }
- while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1]))
- --leapcnt32;
- while (leapcnt32 > 0 && !is32(trans[leapi32])) {
- --leapcnt32;
- ++leapi32;
- }
- fullname = erealloc(fullname,
- strlen(directory) + 1 + strlen(name) + 1);
- (void) sprintf(fullname, "%s/%s", directory, name);
- /*
- ** Remove old file, if any, to snap links.
- */
- if (!itsdir(fullname) && remove(fullname) != 0 && errno != ENOENT) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't remove %s: %s\n"),
- progname, fullname, e);
- exit(EXIT_FAILURE);
- }
- if ((fp = fopen(fullname, "wb")) == NULL) {
- if (mkdirs(fullname) != 0)
- exit(EXIT_FAILURE);
- if ((fp = fopen(fullname, "wb")) == NULL) {
- const char *e = strerror(errno);
-
- (void) fprintf(stderr, _("%s: Can't create %s: %s\n"),
- progname, fullname, e);
- exit(EXIT_FAILURE);
- }
- }
- for (pass = 1; pass <= 2; ++pass) {
- register int thistimei, thistimecnt;
- register int thisleapi, thisleapcnt;
- register int thistimelim, thisleaplim;
- int writetype[TZ_MAX_TIMES];
- int typemap[TZ_MAX_TYPES];
- register int thistypecnt;
- char thischars[TZ_MAX_CHARS];
- char thischarcnt;
- int indmap[TZ_MAX_CHARS];
-
- if (pass == 1) {
- thistimei = timei32;
- thistimecnt = timecnt32;
- thisleapi = leapi32;
- thisleapcnt = leapcnt32;
- } else {
- thistimei = 0;
- thistimecnt = timecnt;
- thisleapi = 0;
- thisleapcnt = leapcnt;
- }
- thistimelim = thistimei + thistimecnt;
- thisleaplim = thisleapi + thisleapcnt;
- for (i = 0; i < typecnt; ++i)
- writetype[i] = thistimecnt == timecnt;
- if (thistimecnt == 0) {
- /*
- ** No transition times fall in the current
- ** (32- or 64-bit) window.
- */
- if (typecnt != 0)
- writetype[typecnt - 1] = TRUE;
- } else {
- for (i = thistimei - 1; i < thistimelim; ++i)
- if (i >= 0)
- writetype[types[i]] = TRUE;
- /*
- ** For America/Godthab and Antarctica/Palmer
- */
- if (thistimei == 0)
- writetype[0] = TRUE;
- }
-#ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH
- /*
- ** For some pre-2011 systems: if the last-to-be-written
- ** standard (or daylight) type has an offset different from the
- ** most recently used offset,
- ** append an (unused) copy of the most recently used type
- ** (to help get global "altzone" and "timezone" variables
- ** set correctly).
- */
- {
- register int mrudst, mrustd, hidst, histd, type;
-
- hidst = histd = mrudst = mrustd = -1;
- for (i = thistimei; i < thistimelim; ++i)
- if (isdsts[types[i]])
- mrudst = types[i];
- else mrustd = types[i];
- for (i = 0; i < typecnt; ++i)
- if (writetype[i]) {
- if (isdsts[i])
- hidst = i;
- else histd = i;
- }
- if (hidst >= 0 && mrudst >= 0 && hidst != mrudst &&
- gmtoffs[hidst] != gmtoffs[mrudst]) {
- isdsts[mrudst] = -1;
- type = addtype(gmtoffs[mrudst],
- &chars[abbrinds[mrudst]],
- TRUE,
- ttisstds[mrudst],
- ttisgmts[mrudst]);
- isdsts[mrudst] = TRUE;
- writetype[type] = TRUE;
- }
- if (histd >= 0 && mrustd >= 0 && histd != mrustd &&
- gmtoffs[histd] != gmtoffs[mrustd]) {
- isdsts[mrustd] = -1;
- type = addtype(gmtoffs[mrustd],
- &chars[abbrinds[mrustd]],
- FALSE,
- ttisstds[mrustd],
- ttisgmts[mrustd]);
- isdsts[mrustd] = FALSE;
- writetype[type] = TRUE;
- }
- }
-#endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */
- thistypecnt = 0;
- for (i = 0; i < typecnt; ++i)
- typemap[i] = writetype[i] ? thistypecnt++ : -1;
- for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i)
- indmap[i] = -1;
- thischarcnt = 0;
- for (i = 0; i < typecnt; ++i) {
- register char * thisabbr;
-
- if (!writetype[i])
- continue;
- if (indmap[abbrinds[i]] >= 0)
- continue;
- thisabbr = &chars[abbrinds[i]];
- for (j = 0; j < thischarcnt; ++j)
- if (strcmp(&thischars[j], thisabbr) == 0)
- break;
- if (j == thischarcnt) {
- (void) strcpy(&thischars[(int) thischarcnt],
- thisabbr);
- thischarcnt += strlen(thisabbr) + 1;
- }
- indmap[abbrinds[i]] = j;
- }
-#define DO(field) ((void) fwrite(tzh.field, sizeof tzh.field, 1, fp))
- tzh = tzh0;
- (void) strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
- tzh.tzh_version[0] = ZIC_VERSION;
- convert(eitol(thistypecnt), tzh.tzh_ttisgmtcnt);
- convert(eitol(thistypecnt), tzh.tzh_ttisstdcnt);
- convert(eitol(thisleapcnt), tzh.tzh_leapcnt);
- convert(eitol(thistimecnt), tzh.tzh_timecnt);
- convert(eitol(thistypecnt), tzh.tzh_typecnt);
- convert(eitol(thischarcnt), tzh.tzh_charcnt);
- DO(tzh_magic);
- DO(tzh_version);
- DO(tzh_reserved);
- DO(tzh_ttisgmtcnt);
- DO(tzh_ttisstdcnt);
- DO(tzh_leapcnt);
- DO(tzh_timecnt);
- DO(tzh_typecnt);
- DO(tzh_charcnt);
-#undef DO
- for (i = thistimei; i < thistimelim; ++i)
- if (pass == 1)
- puttzcode((long) ats[i], fp);
- else puttzcode64(ats[i], fp);
- for (i = thistimei; i < thistimelim; ++i) {
- unsigned char uc;
-
- uc = typemap[types[i]];
- (void) fwrite(&uc, sizeof uc, 1, fp);
- }
- for (i = 0; i < typecnt; ++i)
- if (writetype[i]) {
- puttzcode(gmtoffs[i], fp);
- (void) putc(isdsts[i], fp);
- (void) putc((unsigned char) indmap[abbrinds[i]], fp);
- }
- if (thischarcnt != 0)
- (void) fwrite(thischars, sizeof thischars[0],
- thischarcnt, fp);
- for (i = thisleapi; i < thisleaplim; ++i) {
- register zic_t todo;
-
- if (roll[i]) {
- if (timecnt == 0 || trans[i] < ats[0]) {
- j = 0;
- while (isdsts[j])
- if (++j >= typecnt) {
- j = 0;
- break;
- }
- } else {
- j = 1;
- while (j < timecnt &&
- trans[i] >= ats[j])
- ++j;
- j = types[j - 1];
- }
- todo = tadd(trans[i], -gmtoffs[j]);
- } else todo = trans[i];
- if (pass == 1)
- puttzcode(todo, fp);
- else puttzcode64(todo, fp);
- puttzcode(corr[i], fp);
- }
- for (i = 0; i < typecnt; ++i)
- if (writetype[i])
- (void) putc(ttisstds[i], fp);
- for (i = 0; i < typecnt; ++i)
- if (writetype[i])
- (void) putc(ttisgmts[i], fp);
- }
- (void) fprintf(fp, "\n%s\n", string);
- if (ferror(fp) || fclose(fp)) {
- (void) fprintf(stderr, _("%s: Error writing %s\n"),
- progname, fullname);
- exit(EXIT_FAILURE);
- }
-}
-
-static void
-doabbr(char *const abbr, const char *const format, const char *const letters,
- const int isdst, const int doquotes)
-{
- register char * cp;
- register char * slashp;
- register int len;
-
- slashp = strchr(format, '/');
- if (slashp == NULL) {
- if (letters == NULL)
- (void) strcpy(abbr, format);
- else (void) sprintf(abbr, format, letters);
- } else if (isdst) {
- (void) strcpy(abbr, slashp + 1);
- } else {
- if (slashp > format)
- (void) strncpy(abbr, format, slashp - format);
- abbr[slashp - format] = '\0';
- }
- if (!doquotes)
- return;
- for (cp = abbr; *cp != '\0'; ++cp)
- if (strchr("ABCDEFGHIJKLMNOPQRSTUVWXYZ", *cp) == NULL &&
- strchr("abcdefghijklmnopqrstuvwxyz", *cp) == NULL)
- break;
- len = strlen(abbr);
- if (len > 0 && *cp == '\0')
- return;
- abbr[len + 2] = '\0';
- abbr[len + 1] = '>';
- for ( ; len > 0; --len)
- abbr[len] = abbr[len - 1];
- abbr[0] = '<';
-}
-
-static void
-updateminmax(const int x)
-{
- if (min_year > x)
- min_year = x;
- if (max_year < x)
- max_year = x;
-}
-
-static int
-stringoffset(char *result, long offset)
-{
- register int hours;
- register int minutes;
- register int seconds;
-
- result[0] = '\0';
- if (offset < 0) {
- (void) strcpy(result, "-");
- offset = -offset;
- }
- seconds = offset % SECSPERMIN;
- offset /= SECSPERMIN;
- minutes = offset % MINSPERHOUR;
- offset /= MINSPERHOUR;
- hours = offset;
- if (hours >= HOURSPERDAY) {
- result[0] = '\0';
- return -1;
- }
- (void) sprintf(end(result), "%d", hours);
- if (minutes != 0 || seconds != 0) {
- (void) sprintf(end(result), ":%02d", minutes);
- if (seconds != 0)
- (void) sprintf(end(result), ":%02d", seconds);
- }
- return 0;
-}
-
-static int
-stringrule(char *result, const struct rule *const rp, const long dstoff,
- const long gmtoff)
-{
- register long tod;
-
- result = end(result);
- if (rp->r_dycode == DC_DOM) {
- register int month, total;
-
- if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY)
- return -1;
- total = 0;
- for (month = 0; month < rp->r_month; ++month)
- total += len_months[0][month];
- (void) sprintf(result, "J%d", total + rp->r_dayofmonth);
- } else {
- register int week;
-
- if (rp->r_dycode == DC_DOWGEQ) {
- if ((rp->r_dayofmonth % DAYSPERWEEK) != 1)
- return -1;
- week = 1 + rp->r_dayofmonth / DAYSPERWEEK;
- } else if (rp->r_dycode == DC_DOWLEQ) {
- if (rp->r_dayofmonth == len_months[1][rp->r_month])
- week = 5;
- else {
- if ((rp->r_dayofmonth % DAYSPERWEEK) != 0)
- return -1;
- week = rp->r_dayofmonth / DAYSPERWEEK;
- }
- } else return -1; /* "cannot happen" */
- (void) sprintf(result, "M%d.%d.%d",
- rp->r_month + 1, week, rp->r_wday);
- }
- tod = rp->r_tod;
- if (rp->r_todisgmt)
- tod += gmtoff;
- if (rp->r_todisstd && rp->r_stdoff == 0)
- tod += dstoff;
- if (tod < 0) {
- result[0] = '\0';
- return -1;
- }
- if (tod != 2 * SECSPERMIN * MINSPERHOUR) {
- (void) strcat(result, "/");
- if (stringoffset(end(result), tod) != 0)
- return -1;
- }
- return 0;
-}
-
-static void
-stringzone(char *result, const struct zone *const zpfirst, const int zonecount)
-{
- register const struct zone * zp;
- register struct rule * rp;
- register struct rule * stdrp;
- register struct rule * dstrp;
- register int i;
- register const char * abbrvar;
-
- result[0] = '\0';
- zp = zpfirst + zonecount - 1;
- stdrp = dstrp = NULL;
- for (i = 0; i < zp->z_nrules; ++i) {
- rp = &zp->z_rules[i];
- if (rp->r_hiwasnum || rp->r_hiyear != INT_MAX)
- continue;
- if (rp->r_yrtype != NULL)
- continue;
- if (rp->r_stdoff == 0) {
- if (stdrp == NULL)
- stdrp = rp;
- else return;
- } else {
- if (dstrp == NULL)
- dstrp = rp;
- else return;
- }
- }
- if (stdrp == NULL && dstrp == NULL) {
- /*
- ** There are no rules running through "max".
- ** Let's find the latest rule.
- */
- for (i = 0; i < zp->z_nrules; ++i) {
- rp = &zp->z_rules[i];
- if (stdrp == NULL || rp->r_hiyear > stdrp->r_hiyear ||
- (rp->r_hiyear == stdrp->r_hiyear &&
- rp->r_month > stdrp->r_month))
- stdrp = rp;
- }
- if (stdrp != NULL && stdrp->r_stdoff != 0)
- return; /* We end up in DST (a POSIX no-no). */
- /*
- ** Horrid special case: if year is 2037,
- ** presume this is a zone handled on a year-by-year basis;
- ** do not try to apply a rule to the zone.
- */
- if (stdrp != NULL && stdrp->r_hiyear == 2037)
- return;
- }
- if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0))
- return;
- abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar;
- doabbr(result, zp->z_format, abbrvar, FALSE, TRUE);
- if (stringoffset(end(result), -zp->z_gmtoff) != 0) {
- result[0] = '\0';
- return;
- }
- if (dstrp == NULL)
- return;
- doabbr(end(result), zp->z_format, dstrp->r_abbrvar, TRUE, TRUE);
- if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR)
- if (stringoffset(end(result),
- -(zp->z_gmtoff + dstrp->r_stdoff)) != 0) {
- result[0] = '\0';
- return;
- }
- (void) strcat(result, ",");
- if (stringrule(result, dstrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
- result[0] = '\0';
- return;
- }
- (void) strcat(result, ",");
- if (stringrule(result, stdrp, dstrp->r_stdoff, zp->z_gmtoff) != 0) {
- result[0] = '\0';
- return;
- }
-}
-
-static void
-outzone(const struct zone * const zpfirst, const int zonecount)
-{
- register const struct zone * zp;
- register struct rule * rp;
- register int i, j;
- register int usestart, useuntil;
- register zic_t starttime, untiltime;
- register long gmtoff;
- register long stdoff;
- register int year;
- register long startoff;
- register int startttisstd;
- register int startttisgmt;
- register int type;
- register char * startbuf;
- register char * ab;
- register char * envvar;
- register int max_abbr_len;
- register int max_envvar_len;
- register int prodstic; /* all rules are min to max */
-
- max_abbr_len = 2 + max_format_len + max_abbrvar_len;
- max_envvar_len = 2 * max_abbr_len + 5 * 9;
- startbuf = emalloc(max_abbr_len + 1);
- ab = emalloc(max_abbr_len + 1);
- envvar = emalloc(max_envvar_len + 1);
- INITIALIZE(untiltime);
- INITIALIZE(starttime);
- /*
- ** Now. . .finally. . .generate some useful data!
- */
- timecnt = 0;
- typecnt = 0;
- charcnt = 0;
- prodstic = zonecount == 1;
- /*
- ** Thanks to Earl Chew
- ** for noting the need to unconditionally initialize startttisstd.
- */
- startttisstd = FALSE;
- startttisgmt = FALSE;
- min_year = max_year = EPOCH_YEAR;
- if (leapseen) {
- updateminmax(leapminyear);
- updateminmax(leapmaxyear + (leapmaxyear < INT_MAX));
- }
- for (i = 0; i < zonecount; ++i) {
- zp = &zpfirst[i];
- if (i < zonecount - 1)
- updateminmax(zp->z_untilrule.r_loyear);
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- if (rp->r_lowasnum)
- updateminmax(rp->r_loyear);
- if (rp->r_hiwasnum)
- updateminmax(rp->r_hiyear);
- if (rp->r_lowasnum || rp->r_hiwasnum)
- prodstic = FALSE;
- }
- }
- /*
- ** Generate lots of data if a rule can't cover all future times.
- */
- stringzone(envvar, zpfirst, zonecount);
- if (noise && envvar[0] == '\0') {
- register char * wp;
-
-wp = ecpyalloc(_("no POSIX environment variable for zone"));
- wp = ecatalloc(wp, " ");
- wp = ecatalloc(wp, zpfirst->z_name);
- warning(wp);
- free(wp);
- }
- if (envvar[0] == '\0') {
- if (min_year >= INT_MIN + YEARSPERREPEAT)
- min_year -= YEARSPERREPEAT;
- else min_year = INT_MIN;
- if (max_year <= INT_MAX - YEARSPERREPEAT)
- max_year += YEARSPERREPEAT;
- else max_year = INT_MAX;
- /*
- ** Regardless of any of the above,
- ** for a "proDSTic" zone which specifies that its rules
- ** always have and always will be in effect,
- ** we only need one cycle to define the zone.
- */
- if (prodstic) {
- min_year = 1900;
- max_year = min_year + YEARSPERREPEAT;
- }
- }
- /*
- ** For the benefit of older systems,
- ** generate data from 1900 through 2037.
- */
- if (min_year > 1900)
- min_year = 1900;
- if (max_year < 2037)
- max_year = 2037;
- for (i = 0; i < zonecount; ++i) {
- /*
- ** A guess that may well be corrected later.
- */
- stdoff = 0;
- zp = &zpfirst[i];
- usestart = i > 0 && (zp - 1)->z_untiltime > min_time;
- useuntil = i < (zonecount - 1);
- if (useuntil && zp->z_untiltime <= min_time)
- continue;
- gmtoff = zp->z_gmtoff;
- eat(zp->z_filename, zp->z_linenum);
- *startbuf = '\0';
- startoff = zp->z_gmtoff;
- if (zp->z_nrules == 0) {
- stdoff = zp->z_stdoff;
- doabbr(startbuf, zp->z_format,
- NULL, stdoff != 0, FALSE);
- type = addtype(oadd(zp->z_gmtoff, stdoff),
- startbuf, stdoff != 0, startttisstd,
- startttisgmt);
- if (usestart) {
- addtt(starttime, type);
- usestart = FALSE;
- } else if (stdoff != 0)
- addtt(min_time, type);
- } else for (year = min_year; year <= max_year; ++year) {
- if (useuntil && year > zp->z_untilrule.r_hiyear)
- break;
- /*
- ** Mark which rules to do in the current year.
- ** For those to do, calculate rpytime(rp, year);
- */
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- rp->r_todo = year >= rp->r_loyear &&
- year <= rp->r_hiyear &&
- yearistype(year, rp->r_yrtype);
- if (rp->r_todo)
- rp->r_temp = rpytime(rp, year);
- }
- for ( ; ; ) {
- register int k;
- register zic_t jtime, ktime;
- register long offset;
-
- INITIALIZE(ktime);
- if (useuntil) {
- /*
- ** Turn untiltime into UTC
- ** assuming the current gmtoff and
- ** stdoff values.
- */
- untiltime = zp->z_untiltime;
- if (!zp->z_untilrule.r_todisgmt)
- untiltime = tadd(untiltime,
- -gmtoff);
- if (!zp->z_untilrule.r_todisstd)
- untiltime = tadd(untiltime,
- -stdoff);
- }
- /*
- ** Find the rule (of those to do, if any)
- ** that takes effect earliest in the year.
- */
- k = -1;
- for (j = 0; j < zp->z_nrules; ++j) {
- rp = &zp->z_rules[j];
- if (!rp->r_todo)
- continue;
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- offset = rp->r_todisgmt ? 0 : gmtoff;
- if (!rp->r_todisstd)
- offset = oadd(offset, stdoff);
- jtime = rp->r_temp;
- if (jtime == min_time ||
- jtime == max_time)
- continue;
- jtime = tadd(jtime, -offset);
- if (k < 0 || jtime < ktime) {
- k = j;
- ktime = jtime;
- }
- }
- if (k < 0)
- break; /* go on to next year */
- rp = &zp->z_rules[k];
- rp->r_todo = FALSE;
- if (useuntil && ktime >= untiltime)
- break;
- stdoff = rp->r_stdoff;
- if (usestart && ktime == starttime)
- usestart = FALSE;
- if (usestart) {
- if (ktime < starttime) {
- startoff = oadd(zp->z_gmtoff,
- stdoff);
- doabbr(startbuf, zp->z_format,
- rp->r_abbrvar,
- rp->r_stdoff != 0,
- FALSE);
- continue;
- }
- if (*startbuf == '\0' &&
- startoff == oadd(zp->z_gmtoff,
- stdoff)) {
- doabbr(startbuf,
- zp->z_format,
- rp->r_abbrvar,
- rp->r_stdoff !=
- 0,
- FALSE);
- }
- }
- eats(zp->z_filename, zp->z_linenum,
- rp->r_filename, rp->r_linenum);
- doabbr(ab, zp->z_format, rp->r_abbrvar,
- rp->r_stdoff != 0, FALSE);
- offset = oadd(zp->z_gmtoff, rp->r_stdoff);
- type = addtype(offset, ab, rp->r_stdoff != 0,
- rp->r_todisstd, rp->r_todisgmt);
- addtt(ktime, type);
- }
- }
- if (usestart) {
- if (*startbuf == '\0' &&
- zp->z_format != NULL &&
- strchr(zp->z_format, '%') == NULL &&
- strchr(zp->z_format, '/') == NULL)
- (void) strcpy(startbuf, zp->z_format);
- eat(zp->z_filename, zp->z_linenum);
- if (*startbuf == '\0')
-error(_("can't determine time zone abbreviation to use just after until time"));
- else addtt(starttime,
- addtype(startoff, startbuf,
- startoff != zp->z_gmtoff,
- startttisstd,
- startttisgmt));
- }
- /*
- ** Now we may get to set starttime for the next zone line.
- */
- if (useuntil) {
- startttisstd = zp->z_untilrule.r_todisstd;
- startttisgmt = zp->z_untilrule.r_todisgmt;
- starttime = zp->z_untiltime;
- if (!startttisstd)
- starttime = tadd(starttime, -stdoff);
- if (!startttisgmt)
- starttime = tadd(starttime, -gmtoff);
- }
- }
- writezone(zpfirst->z_name, envvar);
- free(startbuf);
- free(ab);
- free(envvar);
-}
-
-static void
-addtt(const zic_t starttime, int type)
-{
- if (starttime <= min_time ||
- (timecnt == 1 && attypes[0].at < min_time)) {
- gmtoffs[0] = gmtoffs[type];
- isdsts[0] = isdsts[type];
- ttisstds[0] = ttisstds[type];
- ttisgmts[0] = ttisgmts[type];
- if (abbrinds[type] != 0)
- (void) strcpy(chars, &chars[abbrinds[type]]);
- abbrinds[0] = 0;
- charcnt = strlen(chars) + 1;
- typecnt = 1;
- timecnt = 0;
- type = 0;
- }
- if (timecnt >= TZ_MAX_TIMES) {
- error(_("too many transitions?!"));
- exit(EXIT_FAILURE);
- }
- attypes[timecnt].at = starttime;
- attypes[timecnt].type = type;
- ++timecnt;
-}
-
-static int
-addtype(const long gmtoff, const char *const abbr, const int isdst,
- const int ttisstd, const int ttisgmt)
-{
- register int i, j;
-
- if (isdst != TRUE && isdst != FALSE) {
- error(_("internal error - addtype called with bad isdst"));
- exit(EXIT_FAILURE);
- }
- if (ttisstd != TRUE && ttisstd != FALSE) {
- error(_("internal error - addtype called with bad ttisstd"));
- exit(EXIT_FAILURE);
- }
- if (ttisgmt != TRUE && ttisgmt != FALSE) {
- error(_("internal error - addtype called with bad ttisgmt"));
- exit(EXIT_FAILURE);
- }
- /*
- ** See if there's already an entry for this zone type.
- ** If so, just return its index.
- */
- for (i = 0; i < typecnt; ++i) {
- if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
- strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
- ttisstd == ttisstds[i] &&
- ttisgmt == ttisgmts[i])
- return i;
- }
- /*
- ** There isn't one; add a new one, unless there are already too
- ** many.
- */
- if (typecnt >= TZ_MAX_TYPES) {
- error(_("too many local time types"));
- exit(EXIT_FAILURE);
- }
- if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) {
- error(_("UTC offset out of range"));
- exit(EXIT_FAILURE);
- }
- gmtoffs[i] = gmtoff;
- isdsts[i] = isdst;
- ttisstds[i] = ttisstd;
- ttisgmts[i] = ttisgmt;
-
- for (j = 0; j < charcnt; ++j)
- if (strcmp(&chars[j], abbr) == 0)
- break;
- if (j == charcnt)
- newabbr(abbr);
- abbrinds[i] = j;
- ++typecnt;
- return i;
-}
-
-static void
-leapadd(const zic_t t, const int positive, const int rolling, int count)
-{
- register int i, j;
-
- if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
- error(_("too many leap seconds"));
- exit(EXIT_FAILURE);
- }
- for (i = 0; i < leapcnt; ++i)
- if (t <= trans[i]) {
- if (t == trans[i]) {
- error(_("repeated leap second moment"));
- exit(EXIT_FAILURE);
- }
- break;
- }
- do {
- for (j = leapcnt; j > i; --j) {
- trans[j] = trans[j - 1];
- corr[j] = corr[j - 1];
- roll[j] = roll[j - 1];
- }
- trans[i] = t;
- corr[i] = positive ? 1L : eitol(-count);
- roll[i] = rolling;
- ++leapcnt;
- } while (positive && --count != 0);
-}
-
-static void
-adjleap(void)
-{
- register int i;
- register long last = 0;
-
- /*
- ** propagate leap seconds forward
- */
- for (i = 0; i < leapcnt; ++i) {
- trans[i] = tadd(trans[i], last);
- last = corr[i] += last;
- }
-}
-
-static int
-yearistype(const int year, const char *const type)
-{
- static char * buf;
- int result;
-
- if (type == NULL || *type == '\0')
- return TRUE;
- buf = erealloc(buf, 132 + strlen(yitcommand) + strlen(type));
- (void) sprintf(buf, "%s %d %s", yitcommand, year, type);
- result = system(buf);
- if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
- case 0:
- return TRUE;
- case 1:
- return FALSE;
- }
- error(_("Wild result from command execution"));
- (void) fprintf(stderr, _("%s: command was '%s', result was %d\n"),
- progname, buf, result);
- for ( ; ; )
- exit(EXIT_FAILURE);
-}
-
-static int
-lowerit(int a)
-{
- a = (unsigned char) a;
- return (isascii(a) && isupper(a)) ? tolower(a) : a;
-}
-
-/* case-insensitive equality */
-static ATTRIBUTE_PURE int
-ciequal(register const char *ap, register const char *bp)
-{
- while (lowerit(*ap) == lowerit(*bp++))
- if (*ap++ == '\0')
- return TRUE;
- return FALSE;
-}
-
-static ATTRIBUTE_PURE int
-itsabbr(register const char *abbr, register const char *word)
-{
- if (lowerit(*abbr) != lowerit(*word))
- return FALSE;
- ++word;
- while (*++abbr != '\0')
- do {
- if (*word == '\0')
- return FALSE;
- } while (lowerit(*word++) != lowerit(*abbr));
- return TRUE;
-}
-
-static ATTRIBUTE_PURE const struct lookup *
-byword(register const char *const word,
- register const struct lookup *const table)
-{
- register const struct lookup * foundlp;
- register const struct lookup * lp;
-
- if (word == NULL || table == NULL)
- return NULL;
- /*
- ** Look for exact match.
- */
- for (lp = table; lp->l_word != NULL; ++lp)
- if (ciequal(word, lp->l_word))
- return lp;
- /*
- ** Look for inexact match.
- */
- foundlp = NULL;
- for (lp = table; lp->l_word != NULL; ++lp)
- if (itsabbr(word, lp->l_word)) {
- if (foundlp == NULL)
- foundlp = lp;
- else return NULL; /* multiple inexact matches */
- }
- return foundlp;
-}
-
-static char **
-getfields(register char *cp)
-{
- register char * dp;
- register char ** array;
- register int nsubs;
-
- if (cp == NULL)
- return NULL;
- array = emalloc((strlen(cp) + 1) * sizeof *array);
- nsubs = 0;
- for ( ; ; ) {
- while (isascii((unsigned char) *cp) &&
- isspace((unsigned char) *cp))
- ++cp;
- if (*cp == '\0' || *cp == '#')
- break;
- array[nsubs++] = dp = cp;
- do {
- if ((*dp = *cp++) != '"')
- ++dp;
- else while ((*dp = *cp++) != '"')
- if (*dp != '\0')
- ++dp;
- else {
- error(_(
- "Odd number of quotation marks"
- ));
- exit(1);
- }
- } while (*cp != '\0' && *cp != '#' &&
- (!isascii(*cp) || !isspace((unsigned char) *cp)));
- if (isascii(*cp) && isspace((unsigned char) *cp))
- ++cp;
- *dp = '\0';
- }
- array[nsubs] = NULL;
- return array;
-}
-
-static ATTRIBUTE_PURE long
-oadd(const long t1, const long t2)
-{
- if (t1 < 0 ? t2 < LONG_MIN - t1 : LONG_MAX - t1 < t2) {
- error(_("time overflow"));
- exit(EXIT_FAILURE);
- }
- return t1 + t2;
-}
-
-static ATTRIBUTE_PURE zic_t
-tadd(const zic_t t1, const long t2)
-{
- if (t1 == max_time && t2 > 0)
- return max_time;
- if (t1 == min_time && t2 < 0)
- return min_time;
- if (t1 < 0 ? t2 < min_time - t1 : max_time - t1 < t2) {
- error(_("time overflow"));
- exit(EXIT_FAILURE);
- }
- return t1 + t2;
-}
-
-/*
-** Given a rule, and a year, compute the date - in seconds since January 1,
-** 1970, 00:00 LOCAL time - in that year that the rule refers to.
-*/
-
-static zic_t
-rpytime(register const struct rule *const rp, register const int wantedy)
-{
- register int y, m, i;
- register long dayoff; /* with a nod to Margaret O. */
- register zic_t t;
-
- if (wantedy == INT_MIN)
- return min_time;
- if (wantedy == INT_MAX)
- return max_time;
- dayoff = 0;
- m = TM_JANUARY;
- y = EPOCH_YEAR;
- while (wantedy != y) {
- if (wantedy > y) {
- i = len_years[isleap(y)];
- ++y;
- } else {
- --y;
- i = -len_years[isleap(y)];
- }
- dayoff = oadd(dayoff, eitol(i));
- }
- while (m != rp->r_month) {
- i = len_months[isleap(y)][m];
- dayoff = oadd(dayoff, eitol(i));
- ++m;
- }
- i = rp->r_dayofmonth;
- if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
- if (rp->r_dycode == DC_DOWLEQ)
- --i;
- else {
- error(_("use of 2/29 in non leap-year"));
- exit(EXIT_FAILURE);
- }
- }
- --i;
- dayoff = oadd(dayoff, eitol(i));
- if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
- register long wday;
-
-#define LDAYSPERWEEK ((long) DAYSPERWEEK)
- wday = eitol(EPOCH_WDAY);
- /*
- ** Don't trust mod of negative numbers.
- */
- if (dayoff >= 0)
- wday = (wday + dayoff) % LDAYSPERWEEK;
- else {
- wday -= ((-dayoff) % LDAYSPERWEEK);
- if (wday < 0)
- wday += LDAYSPERWEEK;
- }
- while (wday != eitol(rp->r_wday))
- if (rp->r_dycode == DC_DOWGEQ) {
- dayoff = oadd(dayoff, 1);
- if (++wday >= LDAYSPERWEEK)
- wday = 0;
- ++i;
- } else {
- dayoff = oadd(dayoff, -1);
- if (--wday < 0)
- wday = LDAYSPERWEEK - 1;
- --i;
- }
- if (i < 0 || i >= len_months[isleap(y)][m]) {
- if (noise)
- warning(_("rule goes past start/end of month--\
-will not work with pre-2004 versions of zic"));
- }
- }
- if (dayoff < min_time / SECSPERDAY)
- return min_time;
- if (dayoff > max_time / SECSPERDAY)
- return max_time;
- t = (zic_t) dayoff * SECSPERDAY;
- return tadd(t, rp->r_tod);
-}
-
-static void
-newabbr(const char *const string)
-{
- register int i;
-
- if (strcmp(string, GRANDPARENTED) != 0) {
- register const char * cp;
- const char * mp;
-
- /*
- ** Want one to ZIC_MAX_ABBR_LEN_WO_WARN alphabetics
- ** optionally followed by a + or - and a number from 1 to 14.
- */
- cp = string;
- mp = NULL;
- while (isascii((unsigned char) *cp) &&
- isalpha((unsigned char) *cp))
- ++cp;
- if (cp - string == 0)
-mp = _("time zone abbreviation lacks alphabetic at start");
- if (noise && cp - string < 3)
-mp = _("time zone abbreviation has fewer than 3 alphabetics");
- if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
-mp = _("time zone abbreviation has too many alphabetics");
- if (mp == NULL && (*cp == '+' || *cp == '-')) {
- ++cp;
- if (isascii((unsigned char) *cp) &&
- isdigit((unsigned char) *cp))
- if (*cp++ == '1' &&
- *cp >= '0' && *cp <= '4')
- ++cp;
- }
- if (*cp != '\0')
-mp = _("time zone abbreviation differs from POSIX standard");
- if (mp != NULL) {
- char *wp = ecpyalloc(mp);
- wp = ecatalloc(wp, " (");
- wp = ecatalloc(wp, string);
- wp = ecatalloc(wp, ")");
- warning(wp);
- free(wp);
- }
- }
- i = strlen(string) + 1;
- if (charcnt + i > TZ_MAX_CHARS) {
- error(_("too many, or too long, time zone abbreviations"));
- exit(EXIT_FAILURE);
- }
- (void) strcpy(&chars[charcnt], string);
- charcnt += eitol(i);
-}
-
-static int
-mkdirs(char *argname)
-{
- register char * name;
- register char * cp;
-
- if (argname == NULL || *argname == '\0')
- return 0;
- cp = name = ecpyalloc(argname);
- while ((cp = strchr(cp + 1, '/')) != 0) {
- *cp = '\0';
-#ifndef unix
- /*
- ** DOS drive specifier?
- */
- if (isalpha((unsigned char) name[0]) &&
- name[1] == ':' && name[2] == '\0') {
- *cp = '/';
- continue;
- }
-#endif /* !defined unix */
- if (!itsdir(name)) {
- /*
- ** It doesn't seem to exist, so we try to create it.
- ** Creation may fail because of the directory being
- ** created by some other multiprocessor, so we get
- ** to do extra checking.
- */
- if (mkdir(name, MKDIR_UMASK) != 0) {
- const char *e = strerror(errno);
-
- if (errno != EEXIST || !itsdir(name)) {
- (void) fprintf(stderr,
-_("%s: Can't create directory %s: %s\n"),
- progname, name, e);
- free(name);
- return -1;
- }
- }
- }
- *cp = '/';
- }
- free(name);
- return 0;
-}
-
-static ATTRIBUTE_PURE long
-eitol(const int i)
-{
- long l;
-
- l = i;
- if ((i < 0 && l >= 0) || (i == 0 && l != 0) || (i > 0 && l <= 0)) {
- (void) fprintf(stderr,
- _("%s: %d did not sign extend correctly\n"),
- progname, i);
- exit(EXIT_FAILURE);
- }
- return l;
-}
-
-/*
-** UNIX was a registered trademark of The Open Group in 2003.
-*/
Copied: vendor/tzcode/2016f/zic.c (from rev 7736, vendor/tzcode/dist/zic.c)
===================================================================
--- vendor/tzcode/2016f/zic.c (rev 0)
+++ vendor/tzcode/2016f/zic.c 2016-08-15 01:50:44 UTC (rev 7737)
@@ -0,0 +1,3064 @@
+/*
+** This file is in the public domain, so clarified as of
+** 2006-07-17 by Arthur David Olson.
+*/
+
+#include "version.h"
+#include "private.h"
+#include "locale.h"
+#include "tzfile.h"
+
+#include <stdarg.h>
+
+#define ZIC_VERSION_PRE_2013 '2'
+#define ZIC_VERSION '3'
+
+typedef int_fast64_t zic_t;
+#define ZIC_MIN INT_FAST64_MIN
+#define ZIC_MAX INT_FAST64_MAX
+#define SCNdZIC SCNdFAST64
+
+#ifndef ZIC_MAX_ABBR_LEN_WO_WARN
+#define ZIC_MAX_ABBR_LEN_WO_WARN 6
+#endif /* !defined ZIC_MAX_ABBR_LEN_WO_WARN */
+
+#ifdef HAVE_DIRECT_H
+# include <direct.h>
+# include <io.h>
+# undef mkdir
+# define mkdir(name, mode) _mkdir(name)
+#endif
+
+#if HAVE_SYS_STAT_H
+#include <sys/stat.h>
+#endif
+#ifdef S_IRUSR
+#define MKDIR_UMASK (S_IRUSR|S_IWUSR|S_IXUSR|S_IRGRP|S_IXGRP|S_IROTH|S_IXOTH)
+#else
+#define MKDIR_UMASK 0755
+#endif
+
+struct rule {
+ const char * r_filename;
+ int r_linenum;
+ const char * r_name;
+
+ zic_t r_loyear; /* for example, 1986 */
+ zic_t r_hiyear; /* for example, 1986 */
+ const char * r_yrtype;
+ bool r_lowasnum;
+ bool r_hiwasnum;
+
+ int r_month; /* 0..11 */
+
+ int r_dycode; /* see below */
+ int r_dayofmonth;
+ int r_wday;
+
+ zic_t r_tod; /* time from midnight */
+ bool r_todisstd; /* above is standard time if 1 */
+ /* or wall clock time if 0 */
+ bool r_todisgmt; /* above is GMT if 1 */
+ /* or local time if 0 */
+ zic_t r_stdoff; /* offset from standard time */
+ const char * r_abbrvar; /* variable part of abbreviation */
+
+ int r_todo; /* a rule to do (used in outzone) */
+ zic_t r_temp; /* used in outzone */
+};
+
+/*
+** r_dycode r_dayofmonth r_wday
+*/
+
+#define DC_DOM 0 /* 1..31 */ /* unused */
+#define DC_DOWGEQ 1 /* 1..31 */ /* 0..6 (Sun..Sat) */
+#define DC_DOWLEQ 2 /* 1..31 */ /* 0..6 (Sun..Sat) */
+
+struct zone {
+ const char * z_filename;
+ int z_linenum;
+
+ const char * z_name;
+ zic_t z_gmtoff;
+ const char * z_rule;
+ const char * z_format;
+ char z_format_specifier;
+
+ zic_t z_stdoff;
+
+ struct rule * z_rules;
+ int z_nrules;
+
+ struct rule z_untilrule;
+ zic_t z_untiltime;
+};
+
+#if !HAVE_POSIX_DECLS
+extern int getopt(int argc, char * const argv[],
+ const char * options);
+extern int link(const char * fromname, const char * toname);
+extern char * optarg;
+extern int optind;
+#endif
+
+#if ! HAVE_LINK
+# define link(from, to) (errno = ENOTSUP, -1)
+#endif
+#if ! HAVE_SYMLINK
+# define symlink(from, to) (errno = ENOTSUP, -1)
+#endif
+
+static void addtt(zic_t starttime, int type);
+static int addtype(zic_t, char const *, bool, bool, bool);
+static void leapadd(zic_t, bool, int, int);
+static void adjleap(void);
+static void associate(void);
+static void dolink(const char * fromfield, const char * tofield);
+static char ** getfields(char * buf);
+static zic_t gethms(const char * string, const char * errstring,
+ bool);
+static void infile(const char * filename);
+static void inleap(char ** fields, int nfields);
+static void inlink(char ** fields, int nfields);
+static void inrule(char ** fields, int nfields);
+static bool inzcont(char ** fields, int nfields);
+static bool inzone(char ** fields, int nfields);
+static bool inzsub(char **, int, bool);
+static int itsdir(const char * name);
+static bool is_alpha(char a);
+static char lowerit(char);
+static bool mkdirs(char *);
+static void newabbr(const char * abbr);
+static zic_t oadd(zic_t t1, zic_t t2);
+static void outzone(const struct zone * zp, int ntzones);
+static zic_t rpytime(const struct rule * rp, zic_t wantedy);
+static void rulesub(struct rule * rp,
+ const char * loyearp, const char * hiyearp,
+ const char * typep, const char * monthp,
+ const char * dayp, const char * timep);
+static zic_t tadd(zic_t t1, zic_t t2);
+static bool yearistype(int year, const char * type);
+
+/* Bound on length of what %z can expand to. */
+enum { PERCENT_Z_LEN_BOUND = sizeof "+995959" - 1 };
+
+/* If true, work around a bug in Qt 5.6.1 and earlier, which mishandles
+ tzdata binary files whose POSIX-TZ-style strings contain '<'; see
+ QTBUG-53071 <https://bugreports.qt.io/browse/QTBUG-53071>. This
+ workaround will no longer be needed when Qt 5.6.1 and earlier are
+ obsolete, say in the year 2021. */
+enum { WORK_AROUND_QTBUG_53071 = true };
+
+static int charcnt;
+static bool errors;
+static bool warnings;
+static const char * filename;
+static int leapcnt;
+static bool leapseen;
+static zic_t leapminyear;
+static zic_t leapmaxyear;
+static int linenum;
+static int max_abbrvar_len = PERCENT_Z_LEN_BOUND;
+static int max_format_len;
+static zic_t max_year;
+static zic_t min_year;
+static bool noise;
+static const char * rfilename;
+static int rlinenum;
+static const char * progname;
+static int timecnt;
+static int timecnt_alloc;
+static int typecnt;
+
+/*
+** Line codes.
+*/
+
+#define LC_RULE 0
+#define LC_ZONE 1
+#define LC_LINK 2
+#define LC_LEAP 3
+
+/*
+** Which fields are which on a Zone line.
+*/
+
+#define ZF_NAME 1
+#define ZF_GMTOFF 2
+#define ZF_RULE 3
+#define ZF_FORMAT 4
+#define ZF_TILYEAR 5
+#define ZF_TILMONTH 6
+#define ZF_TILDAY 7
+#define ZF_TILTIME 8
+#define ZONE_MINFIELDS 5
+#define ZONE_MAXFIELDS 9
+
+/*
+** Which fields are which on a Zone continuation line.
+*/
+
+#define ZFC_GMTOFF 0
+#define ZFC_RULE 1
+#define ZFC_FORMAT 2
+#define ZFC_TILYEAR 3
+#define ZFC_TILMONTH 4
+#define ZFC_TILDAY 5
+#define ZFC_TILTIME 6
+#define ZONEC_MINFIELDS 3
+#define ZONEC_MAXFIELDS 7
+
+/*
+** Which files are which on a Rule line.
+*/
+
+#define RF_NAME 1
+#define RF_LOYEAR 2
+#define RF_HIYEAR 3
+#define RF_COMMAND 4
+#define RF_MONTH 5
+#define RF_DAY 6
+#define RF_TOD 7
+#define RF_STDOFF 8
+#define RF_ABBRVAR 9
+#define RULE_FIELDS 10
+
+/*
+** Which fields are which on a Link line.
+*/
+
+#define LF_FROM 1
+#define LF_TO 2
+#define LINK_FIELDS 3
+
+/*
+** Which fields are which on a Leap line.
+*/
+
+#define LP_YEAR 1
+#define LP_MONTH 2
+#define LP_DAY 3
+#define LP_TIME 4
+#define LP_CORR 5
+#define LP_ROLL 6
+#define LEAP_FIELDS 7
+
+/*
+** Year synonyms.
+*/
+
+#define YR_MINIMUM 0
+#define YR_MAXIMUM 1
+#define YR_ONLY 2
+
+static struct rule * rules;
+static int nrules; /* number of rules */
+static int nrules_alloc;
+
+static struct zone * zones;
+static int nzones; /* number of zones */
+static int nzones_alloc;
+
+struct link {
+ const char * l_filename;
+ int l_linenum;
+ const char * l_from;
+ const char * l_to;
+};
+
+static struct link * links;
+static int nlinks;
+static int nlinks_alloc;
+
+struct lookup {
+ const char * l_word;
+ const int l_value;
+};
+
+static struct lookup const * byword(const char * string,
+ const struct lookup * lp);
+
+static struct lookup const line_codes[] = {
+ { "Rule", LC_RULE },
+ { "Zone", LC_ZONE },
+ { "Link", LC_LINK },
+ { "Leap", LC_LEAP },
+ { NULL, 0}
+};
+
+static struct lookup const mon_names[] = {
+ { "January", TM_JANUARY },
+ { "February", TM_FEBRUARY },
+ { "March", TM_MARCH },
+ { "April", TM_APRIL },
+ { "May", TM_MAY },
+ { "June", TM_JUNE },
+ { "July", TM_JULY },
+ { "August", TM_AUGUST },
+ { "September", TM_SEPTEMBER },
+ { "October", TM_OCTOBER },
+ { "November", TM_NOVEMBER },
+ { "December", TM_DECEMBER },
+ { NULL, 0 }
+};
+
+static struct lookup const wday_names[] = {
+ { "Sunday", TM_SUNDAY },
+ { "Monday", TM_MONDAY },
+ { "Tuesday", TM_TUESDAY },
+ { "Wednesday", TM_WEDNESDAY },
+ { "Thursday", TM_THURSDAY },
+ { "Friday", TM_FRIDAY },
+ { "Saturday", TM_SATURDAY },
+ { NULL, 0 }
+};
+
+static struct lookup const lasts[] = {
+ { "last-Sunday", TM_SUNDAY },
+ { "last-Monday", TM_MONDAY },
+ { "last-Tuesday", TM_TUESDAY },
+ { "last-Wednesday", TM_WEDNESDAY },
+ { "last-Thursday", TM_THURSDAY },
+ { "last-Friday", TM_FRIDAY },
+ { "last-Saturday", TM_SATURDAY },
+ { NULL, 0 }
+};
+
+static struct lookup const begin_years[] = {
+ { "minimum", YR_MINIMUM },
+ { "maximum", YR_MAXIMUM },
+ { NULL, 0 }
+};
+
+static struct lookup const end_years[] = {
+ { "minimum", YR_MINIMUM },
+ { "maximum", YR_MAXIMUM },
+ { "only", YR_ONLY },
+ { NULL, 0 }
+};
+
+static struct lookup const leap_types[] = {
+ { "Rolling", true },
+ { "Stationary", false },
+ { NULL, 0 }
+};
+
+static const int len_months[2][MONSPERYEAR] = {
+ { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+ { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static const int len_years[2] = {
+ DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+static struct attype {
+ zic_t at;
+ unsigned char type;
+} * attypes;
+static zic_t gmtoffs[TZ_MAX_TYPES];
+static char isdsts[TZ_MAX_TYPES];
+static unsigned char abbrinds[TZ_MAX_TYPES];
+static bool ttisstds[TZ_MAX_TYPES];
+static bool ttisgmts[TZ_MAX_TYPES];
+static char chars[TZ_MAX_CHARS];
+static zic_t trans[TZ_MAX_LEAPS];
+static zic_t corr[TZ_MAX_LEAPS];
+static char roll[TZ_MAX_LEAPS];
+
+/*
+** Memory allocation.
+*/
+
+static _Noreturn void
+memory_exhausted(const char *msg)
+{
+ fprintf(stderr, _("%s: Memory exhausted: %s\n"), progname, msg);
+ exit(EXIT_FAILURE);
+}
+
+static ATTRIBUTE_PURE size_t
+size_product(size_t nitems, size_t itemsize)
+{
+ if (SIZE_MAX / itemsize < nitems)
+ memory_exhausted(_("size overflow"));
+ return nitems * itemsize;
+}
+
+#if !HAVE_STRDUP
+static char *
+strdup(char const *str)
+{
+ char *result = malloc(strlen(str) + 1);
+ return result ? strcpy(result, str) : result;
+}
+#endif
+
+static ATTRIBUTE_PURE void *
+memcheck(void *ptr)
+{
+ if (ptr == NULL)
+ memory_exhausted(strerror(errno));
+ return ptr;
+}
+
+static void *
+emalloc(size_t size)
+{
+ return memcheck(malloc(size));
+}
+
+static void *
+erealloc(void *ptr, size_t size)
+{
+ return memcheck(realloc(ptr, size));
+}
+
+static char *
+ecpyalloc (char const *str)
+{
+ return memcheck(strdup(str));
+}
+
+static void *
+growalloc(void *ptr, size_t itemsize, int nitems, int *nitems_alloc)
+{
+ if (nitems < *nitems_alloc)
+ return ptr;
+ else {
+ int nitems_max = INT_MAX - WORK_AROUND_QTBUG_53071;
+ int amax = nitems_max < SIZE_MAX ? nitems_max : SIZE_MAX;
+ if ((amax - 1) / 3 * 2 < *nitems_alloc)
+ memory_exhausted(_("int overflow"));
+ *nitems_alloc = *nitems_alloc + (*nitems_alloc >> 1) + 1;
+ return erealloc(ptr, size_product(*nitems_alloc, itemsize));
+ }
+}
+
+/*
+** Error handling.
+*/
+
+static void
+eats(const char *const name, const int num, const char *const rname,
+ const int rnum)
+{
+ filename = name;
+ linenum = num;
+ rfilename = rname;
+ rlinenum = rnum;
+}
+
+static void
+eat(const char *const name, const int num)
+{
+ eats(name, num, NULL, -1);
+}
+
+static void ATTRIBUTE_FORMAT((printf, 1, 0))
+verror(const char *const string, va_list args)
+{
+ /*
+ ** Match the format of "cc" to allow sh users to
+ ** zic ... 2>&1 | error -t "*" -v
+ ** on BSD systems.
+ */
+ if (filename)
+ fprintf(stderr, _("\"%s\", line %d: "), filename, linenum);
+ vfprintf(stderr, string, args);
+ if (rfilename != NULL)
+ fprintf(stderr, _(" (rule from \"%s\", line %d)"),
+ rfilename, rlinenum);
+ fprintf(stderr, "\n");
+}
+
+static void ATTRIBUTE_FORMAT((printf, 1, 2))
+error(const char *const string, ...)
+{
+ va_list args;
+ va_start(args, string);
+ verror(string, args);
+ va_end(args);
+ errors = true;
+}
+
+static void ATTRIBUTE_FORMAT((printf, 1, 2))
+warning(const char *const string, ...)
+{
+ va_list args;
+ fprintf(stderr, _("warning: "));
+ va_start(args, string);
+ verror(string, args);
+ va_end(args);
+ warnings = true;
+}
+
+static void
+close_file(FILE *stream, char const *name)
+{
+ char const *e = (ferror(stream) ? _("I/O error")
+ : fclose(stream) != 0 ? strerror(errno) : NULL);
+ if (e) {
+ fprintf(stderr, "%s: ", progname);
+ if (name)
+ fprintf(stderr, "%s: ", name);
+ fprintf(stderr, "%s\n", e);
+ exit(EXIT_FAILURE);
+ }
+}
+
+static _Noreturn void
+usage(FILE *stream, int status)
+{
+ fprintf(stream,
+ _("%s: usage is %s [ --version ] [ --help ] [ -v ] \\\n"
+ "\t[ -l localtime ] [ -p posixrules ] [ -d directory ] \\\n"
+ "\t[ -L leapseconds ] [ filename ... ]\n\n"
+ "Report bugs to %s.\n"),
+ progname, progname, REPORT_BUGS_TO);
+ if (status == EXIT_SUCCESS)
+ close_file(stream, NULL);
+ exit(status);
+}
+
+static const char * psxrules;
+static const char * lcltime;
+static const char * directory;
+static const char * leapsec;
+static const char * yitcommand;
+
+int
+main(int argc, char **argv)
+{
+ register int i;
+ register int j;
+ register int c;
+
+#ifdef S_IWGRP
+ umask(umask(S_IWGRP | S_IWOTH) | (S_IWGRP | S_IWOTH));
+#endif
+#if HAVE_GETTEXT
+ setlocale(LC_ALL, "");
+#ifdef TZ_DOMAINDIR
+ bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
+#endif /* defined TEXTDOMAINDIR */
+ textdomain(TZ_DOMAIN);
+#endif /* HAVE_GETTEXT */
+ progname = argv[0];
+ if (TYPE_BIT(zic_t) < 64) {
+ fprintf(stderr, "%s: %s\n", progname,
+ _("wild compilation-time specification of zic_t"));
+ return EXIT_FAILURE;
+ }
+ for (i = 1; i < argc; ++i)
+ if (strcmp(argv[i], "--version") == 0) {
+ printf("zic %s%s\n", PKGVERSION, TZVERSION);
+ close_file(stdout, NULL);
+ return EXIT_SUCCESS;
+ } else if (strcmp(argv[i], "--help") == 0) {
+ usage(stdout, EXIT_SUCCESS);
+ }
+ while ((c = getopt(argc, argv, "d:l:p:L:vsy:")) != EOF && c != -1)
+ switch (c) {
+ default:
+ usage(stderr, EXIT_FAILURE);
+ case 'd':
+ if (directory == NULL)
+ directory = optarg;
+ else {
+ fprintf(stderr,
+_("%s: More than one -d option specified\n"),
+ progname);
+ return EXIT_FAILURE;
+ }
+ break;
+ case 'l':
+ if (lcltime == NULL)
+ lcltime = optarg;
+ else {
+ fprintf(stderr,
+_("%s: More than one -l option specified\n"),
+ progname);
+ return EXIT_FAILURE;
+ }
+ break;
+ case 'p':
+ if (psxrules == NULL)
+ psxrules = optarg;
+ else {
+ fprintf(stderr,
+_("%s: More than one -p option specified\n"),
+ progname);
+ return EXIT_FAILURE;
+ }
+ break;
+ case 'y':
+ if (yitcommand == NULL)
+ yitcommand = optarg;
+ else {
+ fprintf(stderr,
+_("%s: More than one -y option specified\n"),
+ progname);
+ return EXIT_FAILURE;
+ }
+ break;
+ case 'L':
+ if (leapsec == NULL)
+ leapsec = optarg;
+ else {
+ fprintf(stderr,
+_("%s: More than one -L option specified\n"),
+ progname);
+ return EXIT_FAILURE;
+ }
+ break;
+ case 'v':
+ noise = true;
+ break;
+ case 's':
+ warning(_("-s ignored"));
+ break;
+ }
+ if (optind == argc - 1 && strcmp(argv[optind], "=") == 0)
+ usage(stderr, EXIT_FAILURE); /* usage message by request */
+ if (directory == NULL)
+ directory = TZDIR;
+ if (yitcommand == NULL)
+ yitcommand = "yearistype";
+
+ if (optind < argc && leapsec != NULL) {
+ infile(leapsec);
+ adjleap();
+ }
+
+ for (i = optind; i < argc; ++i)
+ infile(argv[i]);
+ if (errors)
+ return EXIT_FAILURE;
+ associate();
+ for (i = 0; i < nzones; i = j) {
+ /*
+ ** Find the next non-continuation zone entry.
+ */
+ for (j = i + 1; j < nzones && zones[j].z_name == NULL; ++j)
+ continue;
+ outzone(&zones[i], j - i);
+ }
+ /*
+ ** Make links.
+ */
+ for (i = 0; i < nlinks; ++i) {
+ eat(links[i].l_filename, links[i].l_linenum);
+ dolink(links[i].l_from, links[i].l_to);
+ if (noise)
+ for (j = 0; j < nlinks; ++j)
+ if (strcmp(links[i].l_to,
+ links[j].l_from) == 0)
+ warning(_("link to link"));
+ }
+ if (lcltime != NULL) {
+ eat(_("command line"), 1);
+ dolink(lcltime, TZDEFAULT);
+ }
+ if (psxrules != NULL) {
+ eat(_("command line"), 1);
+ dolink(psxrules, TZDEFRULES);
+ }
+ if (warnings && (ferror(stderr) || fclose(stderr) != 0))
+ return EXIT_FAILURE;
+ return errors ? EXIT_FAILURE : EXIT_SUCCESS;
+}
+
+static bool
+componentcheck(char const *name, char const *component,
+ char const *component_end)
+{
+ enum { component_len_max = 14 };
+ size_t component_len = component_end - component;
+ if (component_len == 0) {
+ if (!*name)
+ error (_("empty file name"));
+ else
+ error (_(component == name
+ ? "file name '%s' begins with '/'"
+ : *component_end
+ ? "file name '%s' contains '//'"
+ : "file name '%s' ends with '/'"),
+ name);
+ return false;
+ }
+ if (0 < component_len && component_len <= 2
+ && component[0] == '.' && component_end[-1] == '.') {
+ error(_("file name '%s' contains '%.*s' component"),
+ name, (int) component_len, component);
+ return false;
+ }
+ if (noise) {
+ if (0 < component_len && component[0] == '-')
+ warning(_("file name '%s' component contains leading '-'"),
+ name);
+ if (component_len_max < component_len)
+ warning(_("file name '%s' contains overlength component"
+ " '%.*s...'"),
+ name, component_len_max, component);
+ }
+ return true;
+}
+
+static bool
+namecheck(const char *name)
+{
+ register char const *cp;
+
+ /* Benign characters in a portable file name. */
+ static char const benign[] =
+ "-/_"
+ "abcdefghijklmnopqrstuvwxyz"
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+
+ /* Non-control chars in the POSIX portable character set,
+ excluding the benign characters. */
+ static char const printable_and_not_benign[] =
+ " !\"#$%&'()*+,.0123456789:;<=>?@[\\]^`{|}~";
+
+ register char const *component = name;
+ for (cp = name; *cp; cp++) {
+ unsigned char c = *cp;
+ if (noise && !strchr(benign, c)) {
+ warning((strchr(printable_and_not_benign, c)
+ ? _("file name '%s' contains byte '%c'")
+ : _("file name '%s' contains byte '\\%o'")),
+ name, c);
+ }
+ if (c == '/') {
+ if (!componentcheck(name, component, cp))
+ return false;
+ component = cp + 1;
+ }
+ }
+ return componentcheck(name, component, cp);
+}
+
+static char *
+relname(char const *dir, char const *base)
+{
+ if (*base == '/')
+ return ecpyalloc(base);
+ else {
+ size_t dir_len = strlen(dir);
+ bool needs_slash = dir_len && dir[dir_len - 1] != '/';
+ char *result = emalloc(dir_len + needs_slash + strlen(base) + 1);
+ result[dir_len] = '/';
+ strcpy(result + dir_len + needs_slash, base);
+ return memcpy(result, dir, dir_len);
+ }
+}
+
+static void
+dolink(char const *fromfield, char const *tofield)
+{
+ register char * fromname;
+ register char * toname;
+ register int fromisdir;
+
+ fromname = relname(directory, fromfield);
+ toname = relname(directory, tofield);
+ /*
+ ** We get to be careful here since
+ ** there's a fair chance of root running us.
+ */
+ fromisdir = itsdir(fromname);
+ if (fromisdir) {
+ char const *e = strerror(fromisdir < 0 ? errno : EPERM);
+ fprintf(stderr, _("%s: link from %s failed: %s"),
+ progname, fromname, e);
+ exit(EXIT_FAILURE);
+ }
+ if (link(fromname, toname) != 0) {
+ int link_errno = errno;
+ bool retry_if_link_supported = false;
+
+ if (link_errno == ENOENT || link_errno == ENOTSUP) {
+ if (! mkdirs(toname))
+ exit(EXIT_FAILURE);
+ retry_if_link_supported = true;
+ }
+ if ((link_errno == EEXIST || link_errno == ENOTSUP)
+ && itsdir(toname) == 0
+ && (remove(toname) == 0 || errno == ENOENT))
+ retry_if_link_supported = true;
+ if (retry_if_link_supported && link_errno != ENOTSUP)
+ link_errno = link(fromname, toname) == 0 ? 0 : errno;
+ if (link_errno != 0) {
+ const char *s = fromfield;
+ const char *t;
+ char *p;
+ size_t dotdots = 0;
+ char *symlinkcontents;
+ int symlink_result;
+
+ do
+ t = s;
+ while ((s = strchr(s, '/'))
+ && strncmp(fromfield, tofield, ++s - fromfield) == 0);
+
+ for (s = tofield + (t - fromfield); *s; s++)
+ dotdots += *s == '/';
+ symlinkcontents = emalloc(3 * dotdots + strlen(t) + 1);
+ for (p = symlinkcontents; dotdots-- != 0; p += 3)
+ memcpy(p, "../", 3);
+ strcpy(p, t);
+ symlink_result = symlink(symlinkcontents, toname);
+ free(symlinkcontents);
+ if (symlink_result == 0) {
+ if (link_errno != ENOTSUP)
+ warning(_("symbolic link used because hard link failed: %s"),
+ strerror (link_errno));
+ } else {
+ FILE *fp, *tp;
+ int c;
+ fp = fopen(fromname, "rb");
+ if (!fp) {
+ const char *e = strerror(errno);
+ fprintf(stderr,
+ _("%s: Can't read %s: %s\n"),
+ progname, fromname, e);
+ exit(EXIT_FAILURE);
+ }
+ tp = fopen(toname, "wb");
+ if (!tp) {
+ const char *e = strerror(errno);
+ fprintf(stderr,
+ _("%s: Can't create %s: %s\n"),
+ progname, toname, e);
+ exit(EXIT_FAILURE);
+ }
+ while ((c = getc(fp)) != EOF)
+ putc(c, tp);
+ close_file(fp, fromname);
+ close_file(tp, toname);
+ if (link_errno != ENOTSUP)
+ warning(_("copy used because hard link failed: %s"),
+ strerror (link_errno));
+ }
+ }
+ }
+ free(fromname);
+ free(toname);
+}
+
+#define TIME_T_BITS_IN_FILE 64
+
+static zic_t const min_time = MINVAL (zic_t, TIME_T_BITS_IN_FILE);
+static zic_t const max_time = MAXVAL (zic_t, TIME_T_BITS_IN_FILE);
+
+/* Estimated time of the Big Bang, in seconds since the POSIX epoch.
+ rounded downward to the negation of a power of two that is
+ comfortably outside the error bounds.
+
+ For the time of the Big Bang, see:
+
+ Ade PAR, Aghanim N, Armitage-Caplan C et al. Planck 2013 results.
+ I. Overview of products and scientific results.
+ arXiv:1303.5062 2013-03-20 20:10:01 UTC
+ <http://arxiv.org/pdf/1303.5062v1> [PDF]
+
+ Page 36, Table 9, row Age/Gyr, column Planck+WP+highL+BAO 68% limits
+ gives the value 13.798 plus-or-minus 0.037 billion years.
+ Multiplying this by 1000000000 and then by 31557600 (the number of
+ seconds in an astronomical year) gives a value that is comfortably
+ less than 2**59, so BIG_BANG is - 2**59.
+
+ BIG_BANG is approximate, and may change in future versions.
+ Please do not rely on its exact value. */
+
+#ifndef BIG_BANG
+#define BIG_BANG (- (1LL << 59))
+#endif
+
+/* If true, work around GNOME bug 730332
+ <https://bugzilla.gnome.org/show_bug.cgi?id=730332>
+ by refusing to output time stamps before BIG_BANG.
+ Such time stamps are physically suspect anyway.
+
+ The GNOME bug is scheduled to be fixed in GNOME 3.22, and if so
+ this workaround will no longer be needed when GNOME 3.21 and
+ earlier are obsolete, say in the year 2021. */
+enum { WORK_AROUND_GNOME_BUG_730332 = true };
+
+static const zic_t early_time = (WORK_AROUND_GNOME_BUG_730332
+ ? BIG_BANG
+ : MINVAL(zic_t, TIME_T_BITS_IN_FILE));
+
+/* Return 1 if NAME is a directory, 0 if it's something else, -1 if trouble. */
+static int
+itsdir(char const *name)
+{
+ struct stat st;
+ int res = stat(name, &st);
+#ifdef S_ISDIR
+ if (res == 0)
+ return S_ISDIR(st.st_mode) != 0;
+#endif
+ if (res == 0 || errno == EOVERFLOW) {
+ char *nameslashdot = relname(name, ".");
+ bool dir = stat(nameslashdot, &st) == 0 || errno == EOVERFLOW;
+ free(nameslashdot);
+ return dir;
+ }
+ return -1;
+}
+
+/*
+** Associate sets of rules with zones.
+*/
+
+/*
+** Sort by rule name.
+*/
+
+static int
+rcomp(const void *cp1, const void *cp2)
+{
+ return strcmp(((const struct rule *) cp1)->r_name,
+ ((const struct rule *) cp2)->r_name);
+}
+
+static void
+associate(void)
+{
+ register struct zone * zp;
+ register struct rule * rp;
+ register int base, out;
+ register int i, j;
+
+ if (nrules != 0) {
+ qsort(rules, nrules, sizeof *rules, rcomp);
+ for (i = 0; i < nrules - 1; ++i) {
+ if (strcmp(rules[i].r_name,
+ rules[i + 1].r_name) != 0)
+ continue;
+ if (strcmp(rules[i].r_filename,
+ rules[i + 1].r_filename) == 0)
+ continue;
+ eat(rules[i].r_filename, rules[i].r_linenum);
+ warning(_("same rule name in multiple files"));
+ eat(rules[i + 1].r_filename, rules[i + 1].r_linenum);
+ warning(_("same rule name in multiple files"));
+ for (j = i + 2; j < nrules; ++j) {
+ if (strcmp(rules[i].r_name,
+ rules[j].r_name) != 0)
+ break;
+ if (strcmp(rules[i].r_filename,
+ rules[j].r_filename) == 0)
+ continue;
+ if (strcmp(rules[i + 1].r_filename,
+ rules[j].r_filename) == 0)
+ continue;
+ break;
+ }
+ i = j - 1;
+ }
+ }
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ zp->z_rules = NULL;
+ zp->z_nrules = 0;
+ }
+ for (base = 0; base < nrules; base = out) {
+ rp = &rules[base];
+ for (out = base + 1; out < nrules; ++out)
+ if (strcmp(rp->r_name, rules[out].r_name) != 0)
+ break;
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ if (strcmp(zp->z_rule, rp->r_name) != 0)
+ continue;
+ zp->z_rules = rp;
+ zp->z_nrules = out - base;
+ }
+ }
+ for (i = 0; i < nzones; ++i) {
+ zp = &zones[i];
+ if (zp->z_nrules == 0) {
+ /*
+ ** Maybe we have a local standard time offset.
+ */
+ eat(zp->z_filename, zp->z_linenum);
+ zp->z_stdoff = gethms(zp->z_rule, _("unruly zone"),
+ true);
+ /*
+ ** Note, though, that if there's no rule,
+ ** a '%s' in the format is a bad thing.
+ */
+ if (zp->z_format_specifier == 's')
+ error("%s", _("%s in ruleless zone"));
+ }
+ }
+ if (errors)
+ exit(EXIT_FAILURE);
+}
+
+static void
+infile(const char *name)
+{
+ register FILE * fp;
+ register char ** fields;
+ register char * cp;
+ register const struct lookup * lp;
+ register int nfields;
+ register bool wantcont;
+ register int num;
+ char buf[BUFSIZ];
+
+ if (strcmp(name, "-") == 0) {
+ name = _("standard input");
+ fp = stdin;
+ } else if ((fp = fopen(name, "r")) == NULL) {
+ const char *e = strerror(errno);
+
+ fprintf(stderr, _("%s: Can't open %s: %s\n"),
+ progname, name, e);
+ exit(EXIT_FAILURE);
+ }
+ wantcont = false;
+ for (num = 1; ; ++num) {
+ eat(name, num);
+ if (fgets(buf, sizeof buf, fp) != buf)
+ break;
+ cp = strchr(buf, '\n');
+ if (cp == NULL) {
+ error(_("line too long"));
+ exit(EXIT_FAILURE);
+ }
+ *cp = '\0';
+ fields = getfields(buf);
+ nfields = 0;
+ while (fields[nfields] != NULL) {
+ static char nada;
+
+ if (strcmp(fields[nfields], "-") == 0)
+ fields[nfields] = &nada;
+ ++nfields;
+ }
+ if (nfields == 0) {
+ /* nothing to do */
+ } else if (wantcont) {
+ wantcont = inzcont(fields, nfields);
+ } else {
+ lp = byword(fields[0], line_codes);
+ if (lp == NULL)
+ error(_("input line of unknown type"));
+ else switch ((int) (lp->l_value)) {
+ case LC_RULE:
+ inrule(fields, nfields);
+ wantcont = false;
+ break;
+ case LC_ZONE:
+ wantcont = inzone(fields, nfields);
+ break;
+ case LC_LINK:
+ inlink(fields, nfields);
+ wantcont = false;
+ break;
+ case LC_LEAP:
+ if (name != leapsec)
+ warning(_("%s: Leap line in non leap"
+ " seconds file %s"),
+ progname, name);
+ else inleap(fields, nfields);
+ wantcont = false;
+ break;
+ default: /* "cannot happen" */
+ fprintf(stderr,
+_("%s: panic: Invalid l_value %d\n"),
+ progname, lp->l_value);
+ exit(EXIT_FAILURE);
+ }
+ }
+ free(fields);
+ }
+ close_file(fp, filename);
+ if (wantcont)
+ error(_("expected continuation line not found"));
+}
+
+/*
+** Convert a string of one of the forms
+** h -h hh:mm -hh:mm hh:mm:ss -hh:mm:ss
+** into a number of seconds.
+** A null string maps to zero.
+** Call error with errstring and return zero on errors.
+*/
+
+static zic_t
+gethms(char const *string, char const *errstring, bool signable)
+{
+ zic_t hh;
+ int mm, ss, sign;
+ char xs;
+
+ if (string == NULL || *string == '\0')
+ return 0;
+ if (!signable)
+ sign = 1;
+ else if (*string == '-') {
+ sign = -1;
+ ++string;
+ } else sign = 1;
+ if (sscanf(string, "%"SCNdZIC"%c", &hh, &xs) == 1)
+ mm = ss = 0;
+ else if (sscanf(string, "%"SCNdZIC":%d%c", &hh, &mm, &xs) == 2)
+ ss = 0;
+ else if (sscanf(string, "%"SCNdZIC":%d:%d%c", &hh, &mm, &ss, &xs)
+ != 3) {
+ error("%s", errstring);
+ return 0;
+ }
+ if (hh < 0 ||
+ mm < 0 || mm >= MINSPERHOUR ||
+ ss < 0 || ss > SECSPERMIN) {
+ error("%s", errstring);
+ return 0;
+ }
+ if (ZIC_MAX / SECSPERHOUR < hh) {
+ error(_("time overflow"));
+ return 0;
+ }
+ if (noise && (hh > HOURSPERDAY ||
+ (hh == HOURSPERDAY && (mm != 0 || ss != 0))))
+warning(_("values over 24 hours not handled by pre-2007 versions of zic"));
+ return oadd(sign * hh * SECSPERHOUR,
+ sign * (mm * SECSPERMIN + ss));
+}
+
+static void
+inrule(char **fields, int nfields)
+{
+ static struct rule r;
+
+ if (nfields != RULE_FIELDS) {
+ error(_("wrong number of fields on Rule line"));
+ return;
+ }
+ if (*fields[RF_NAME] == '\0') {
+ error(_("nameless rule"));
+ return;
+ }
+ r.r_filename = filename;
+ r.r_linenum = linenum;
+ r.r_stdoff = gethms(fields[RF_STDOFF], _("invalid saved time"), true);
+ rulesub(&r, fields[RF_LOYEAR], fields[RF_HIYEAR], fields[RF_COMMAND],
+ fields[RF_MONTH], fields[RF_DAY], fields[RF_TOD]);
+ r.r_name = ecpyalloc(fields[RF_NAME]);
+ r.r_abbrvar = ecpyalloc(fields[RF_ABBRVAR]);
+ if (max_abbrvar_len < strlen(r.r_abbrvar))
+ max_abbrvar_len = strlen(r.r_abbrvar);
+ rules = growalloc(rules, sizeof *rules, nrules, &nrules_alloc);
+ rules[nrules++] = r;
+}
+
+static bool
+inzone(char **fields, int nfields)
+{
+ register int i;
+
+ if (nfields < ZONE_MINFIELDS || nfields > ZONE_MAXFIELDS) {
+ error(_("wrong number of fields on Zone line"));
+ return false;
+ }
+ if (strcmp(fields[ZF_NAME], TZDEFAULT) == 0 && lcltime != NULL) {
+ error(
+_("\"Zone %s\" line and -l option are mutually exclusive"),
+ TZDEFAULT);
+ return false;
+ }
+ if (strcmp(fields[ZF_NAME], TZDEFRULES) == 0 && psxrules != NULL) {
+ error(
+_("\"Zone %s\" line and -p option are mutually exclusive"),
+ TZDEFRULES);
+ return false;
+ }
+ for (i = 0; i < nzones; ++i)
+ if (zones[i].z_name != NULL &&
+ strcmp(zones[i].z_name, fields[ZF_NAME]) == 0) {
+ error(
+_("duplicate zone name %s (file \"%s\", line %d)"),
+ fields[ZF_NAME],
+ zones[i].z_filename,
+ zones[i].z_linenum);
+ return false;
+ }
+ return inzsub(fields, nfields, false);
+}
+
+static bool
+inzcont(char **fields, int nfields)
+{
+ if (nfields < ZONEC_MINFIELDS || nfields > ZONEC_MAXFIELDS) {
+ error(_("wrong number of fields on Zone continuation line"));
+ return false;
+ }
+ return inzsub(fields, nfields, true);
+}
+
+static bool
+inzsub(char **fields, int nfields, bool iscont)
+{
+ register char * cp;
+ char * cp1;
+ static struct zone z;
+ register int i_gmtoff, i_rule, i_format;
+ register int i_untilyear, i_untilmonth;
+ register int i_untilday, i_untiltime;
+ register bool hasuntil;
+
+ if (iscont) {
+ i_gmtoff = ZFC_GMTOFF;
+ i_rule = ZFC_RULE;
+ i_format = ZFC_FORMAT;
+ i_untilyear = ZFC_TILYEAR;
+ i_untilmonth = ZFC_TILMONTH;
+ i_untilday = ZFC_TILDAY;
+ i_untiltime = ZFC_TILTIME;
+ z.z_name = NULL;
+ } else if (!namecheck(fields[ZF_NAME]))
+ return false;
+ else {
+ i_gmtoff = ZF_GMTOFF;
+ i_rule = ZF_RULE;
+ i_format = ZF_FORMAT;
+ i_untilyear = ZF_TILYEAR;
+ i_untilmonth = ZF_TILMONTH;
+ i_untilday = ZF_TILDAY;
+ i_untiltime = ZF_TILTIME;
+ z.z_name = ecpyalloc(fields[ZF_NAME]);
+ }
+ z.z_filename = filename;
+ z.z_linenum = linenum;
+ z.z_gmtoff = gethms(fields[i_gmtoff], _("invalid UT offset"), true);
+ if ((cp = strchr(fields[i_format], '%')) != 0) {
+ if ((*++cp != 's' && *cp != 'z') || strchr(cp, '%')
+ || strchr(fields[i_format], '/')) {
+ error(_("invalid abbreviation format"));
+ return false;
+ }
+ }
+ z.z_rule = ecpyalloc(fields[i_rule]);
+ z.z_format = cp1 = ecpyalloc(fields[i_format]);
+ z.z_format_specifier = cp ? *cp : '\0';
+ if (z.z_format_specifier == 'z') {
+ if (noise)
+ warning(_("format '%s' not handled by pre-2015 versions of zic"),
+ z.z_format);
+ cp1[cp - fields[i_format]] = 's';
+ }
+ if (max_format_len < strlen(z.z_format))
+ max_format_len = strlen(z.z_format);
+ hasuntil = nfields > i_untilyear;
+ if (hasuntil) {
+ z.z_untilrule.r_filename = filename;
+ z.z_untilrule.r_linenum = linenum;
+ rulesub(&z.z_untilrule,
+ fields[i_untilyear],
+ "only",
+ "",
+ (nfields > i_untilmonth) ?
+ fields[i_untilmonth] : "Jan",
+ (nfields > i_untilday) ? fields[i_untilday] : "1",
+ (nfields > i_untiltime) ? fields[i_untiltime] : "0");
+ z.z_untiltime = rpytime(&z.z_untilrule,
+ z.z_untilrule.r_loyear);
+ if (iscont && nzones > 0 &&
+ z.z_untiltime > min_time &&
+ z.z_untiltime < max_time &&
+ zones[nzones - 1].z_untiltime > min_time &&
+ zones[nzones - 1].z_untiltime < max_time &&
+ zones[nzones - 1].z_untiltime >= z.z_untiltime) {
+ error(_(
+"Zone continuation line end time is not after end time of previous line"
+ ));
+ return false;
+ }
+ }
+ zones = growalloc(zones, sizeof *zones, nzones, &nzones_alloc);
+ zones[nzones++] = z;
+ /*
+ ** If there was an UNTIL field on this line,
+ ** there's more information about the zone on the next line.
+ */
+ return hasuntil;
+}
+
+static void
+inleap(char **fields, int nfields)
+{
+ register const char * cp;
+ register const struct lookup * lp;
+ register int i, j;
+ zic_t year;
+ int month, day;
+ zic_t dayoff, tod;
+ zic_t t;
+ char xs;
+
+ if (nfields != LEAP_FIELDS) {
+ error(_("wrong number of fields on Leap line"));
+ return;
+ }
+ dayoff = 0;
+ cp = fields[LP_YEAR];
+ if (sscanf(cp, "%"SCNdZIC"%c", &year, &xs) != 1) {
+ /*
+ ** Leapin' Lizards!
+ */
+ error(_("invalid leaping year"));
+ return;
+ }
+ if (!leapseen || leapmaxyear < year)
+ leapmaxyear = year;
+ if (!leapseen || leapminyear > year)
+ leapminyear = year;
+ leapseen = true;
+ j = EPOCH_YEAR;
+ while (j != year) {
+ if (year > j) {
+ i = len_years[isleap(j)];
+ ++j;
+ } else {
+ --j;
+ i = -len_years[isleap(j)];
+ }
+ dayoff = oadd(dayoff, i);
+ }
+ if ((lp = byword(fields[LP_MONTH], mon_names)) == NULL) {
+ error(_("invalid month name"));
+ return;
+ }
+ month = lp->l_value;
+ j = TM_JANUARY;
+ while (j != month) {
+ i = len_months[isleap(year)][j];
+ dayoff = oadd(dayoff, i);
+ ++j;
+ }
+ cp = fields[LP_DAY];
+ if (sscanf(cp, "%d%c", &day, &xs) != 1 ||
+ day <= 0 || day > len_months[isleap(year)][month]) {
+ error(_("invalid day of month"));
+ return;
+ }
+ dayoff = oadd(dayoff, day - 1);
+ if (dayoff < min_time / SECSPERDAY) {
+ error(_("time too small"));
+ return;
+ }
+ if (dayoff > max_time / SECSPERDAY) {
+ error(_("time too large"));
+ return;
+ }
+ t = dayoff * SECSPERDAY;
+ tod = gethms(fields[LP_TIME], _("invalid time of day"), false);
+ cp = fields[LP_CORR];
+ {
+ register bool positive;
+ int count;
+
+ if (strcmp(cp, "") == 0) { /* infile() turns "-" into "" */
+ positive = false;
+ count = 1;
+ } else if (strcmp(cp, "--") == 0) {
+ positive = false;
+ count = 2;
+ } else if (strcmp(cp, "+") == 0) {
+ positive = true;
+ count = 1;
+ } else if (strcmp(cp, "++") == 0) {
+ positive = true;
+ count = 2;
+ } else {
+ error(_("illegal CORRECTION field on Leap line"));
+ return;
+ }
+ if ((lp = byword(fields[LP_ROLL], leap_types)) == NULL) {
+ error(_(
+ "illegal Rolling/Stationary field on Leap line"
+ ));
+ return;
+ }
+ t = tadd(t, tod);
+ if (t < early_time) {
+ error(_("leap second precedes Big Bang"));
+ return;
+ }
+ leapadd(t, positive, lp->l_value, count);
+ }
+}
+
+static void
+inlink(char **fields, int nfields)
+{
+ struct link l;
+
+ if (nfields != LINK_FIELDS) {
+ error(_("wrong number of fields on Link line"));
+ return;
+ }
+ if (*fields[LF_FROM] == '\0') {
+ error(_("blank FROM field on Link line"));
+ return;
+ }
+ if (! namecheck(fields[LF_TO]))
+ return;
+ l.l_filename = filename;
+ l.l_linenum = linenum;
+ l.l_from = ecpyalloc(fields[LF_FROM]);
+ l.l_to = ecpyalloc(fields[LF_TO]);
+ links = growalloc(links, sizeof *links, nlinks, &nlinks_alloc);
+ links[nlinks++] = l;
+}
+
+static void
+rulesub(struct rule *rp, const char *loyearp, const char *hiyearp,
+ const char *typep, const char *monthp, const char *dayp,
+ const char *timep)
+{
+ register const struct lookup * lp;
+ register const char * cp;
+ register char * dp;
+ register char * ep;
+ char xs;
+
+ if ((lp = byword(monthp, mon_names)) == NULL) {
+ error(_("invalid month name"));
+ return;
+ }
+ rp->r_month = lp->l_value;
+ rp->r_todisstd = false;
+ rp->r_todisgmt = false;
+ dp = ecpyalloc(timep);
+ if (*dp != '\0') {
+ ep = dp + strlen(dp) - 1;
+ switch (lowerit(*ep)) {
+ case 's': /* Standard */
+ rp->r_todisstd = true;
+ rp->r_todisgmt = false;
+ *ep = '\0';
+ break;
+ case 'w': /* Wall */
+ rp->r_todisstd = false;
+ rp->r_todisgmt = false;
+ *ep = '\0';
+ break;
+ case 'g': /* Greenwich */
+ case 'u': /* Universal */
+ case 'z': /* Zulu */
+ rp->r_todisstd = true;
+ rp->r_todisgmt = true;
+ *ep = '\0';
+ break;
+ }
+ }
+ rp->r_tod = gethms(dp, _("invalid time of day"), false);
+ free(dp);
+ /*
+ ** Year work.
+ */
+ cp = loyearp;
+ lp = byword(cp, begin_years);
+ rp->r_lowasnum = lp == NULL;
+ if (!rp->r_lowasnum) switch ((int) lp->l_value) {
+ case YR_MINIMUM:
+ rp->r_loyear = ZIC_MIN;
+ break;
+ case YR_MAXIMUM:
+ rp->r_loyear = ZIC_MAX;
+ break;
+ default: /* "cannot happen" */
+ fprintf(stderr,
+ _("%s: panic: Invalid l_value %d\n"),
+ progname, lp->l_value);
+ exit(EXIT_FAILURE);
+ } else if (sscanf(cp, "%"SCNdZIC"%c", &rp->r_loyear, &xs) != 1) {
+ error(_("invalid starting year"));
+ return;
+ }
+ cp = hiyearp;
+ lp = byword(cp, end_years);
+ rp->r_hiwasnum = lp == NULL;
+ if (!rp->r_hiwasnum) switch ((int) lp->l_value) {
+ case YR_MINIMUM:
+ rp->r_hiyear = ZIC_MIN;
+ break;
+ case YR_MAXIMUM:
+ rp->r_hiyear = ZIC_MAX;
+ break;
+ case YR_ONLY:
+ rp->r_hiyear = rp->r_loyear;
+ break;
+ default: /* "cannot happen" */
+ fprintf(stderr,
+ _("%s: panic: Invalid l_value %d\n"),
+ progname, lp->l_value);
+ exit(EXIT_FAILURE);
+ } else if (sscanf(cp, "%"SCNdZIC"%c", &rp->r_hiyear, &xs) != 1) {
+ error(_("invalid ending year"));
+ return;
+ }
+ if (rp->r_loyear > rp->r_hiyear) {
+ error(_("starting year greater than ending year"));
+ return;
+ }
+ if (*typep == '\0')
+ rp->r_yrtype = NULL;
+ else {
+ if (rp->r_loyear == rp->r_hiyear) {
+ error(_("typed single year"));
+ return;
+ }
+ rp->r_yrtype = ecpyalloc(typep);
+ }
+ /*
+ ** Day work.
+ ** Accept things such as:
+ ** 1
+ ** last-Sunday
+ ** Sun<=20
+ ** Sun>=7
+ */
+ dp = ecpyalloc(dayp);
+ if ((lp = byword(dp, lasts)) != NULL) {
+ rp->r_dycode = DC_DOWLEQ;
+ rp->r_wday = lp->l_value;
+ rp->r_dayofmonth = len_months[1][rp->r_month];
+ } else {
+ if ((ep = strchr(dp, '<')) != 0)
+ rp->r_dycode = DC_DOWLEQ;
+ else if ((ep = strchr(dp, '>')) != 0)
+ rp->r_dycode = DC_DOWGEQ;
+ else {
+ ep = dp;
+ rp->r_dycode = DC_DOM;
+ }
+ if (rp->r_dycode != DC_DOM) {
+ *ep++ = 0;
+ if (*ep++ != '=') {
+ error(_("invalid day of month"));
+ free(dp);
+ return;
+ }
+ if ((lp = byword(dp, wday_names)) == NULL) {
+ error(_("invalid weekday name"));
+ free(dp);
+ return;
+ }
+ rp->r_wday = lp->l_value;
+ }
+ if (sscanf(ep, "%d%c", &rp->r_dayofmonth, &xs) != 1 ||
+ rp->r_dayofmonth <= 0 ||
+ (rp->r_dayofmonth > len_months[1][rp->r_month])) {
+ error(_("invalid day of month"));
+ free(dp);
+ return;
+ }
+ }
+ free(dp);
+}
+
+static void
+convert(const int_fast32_t val, char *const buf)
+{
+ register int i;
+ register int shift;
+ unsigned char *const b = (unsigned char *) buf;
+
+ for (i = 0, shift = 24; i < 4; ++i, shift -= 8)
+ b[i] = val >> shift;
+}
+
+static void
+convert64(const zic_t val, char *const buf)
+{
+ register int i;
+ register int shift;
+ unsigned char *const b = (unsigned char *) buf;
+
+ for (i = 0, shift = 56; i < 8; ++i, shift -= 8)
+ b[i] = val >> shift;
+}
+
+static void
+puttzcode(const int_fast32_t val, FILE *const fp)
+{
+ char buf[4];
+
+ convert(val, buf);
+ fwrite(buf, sizeof buf, 1, fp);
+}
+
+static void
+puttzcode64(const zic_t val, FILE *const fp)
+{
+ char buf[8];
+
+ convert64(val, buf);
+ fwrite(buf, sizeof buf, 1, fp);
+}
+
+static int
+atcomp(const void *avp, const void *bvp)
+{
+ const zic_t a = ((const struct attype *) avp)->at;
+ const zic_t b = ((const struct attype *) bvp)->at;
+
+ return (a < b) ? -1 : (a > b);
+}
+
+static bool
+is32(const zic_t x)
+{
+ return INT32_MIN <= x && x <= INT32_MAX;
+}
+
+static void
+writezone(const char *const name, const char *const string, char version)
+{
+ register FILE * fp;
+ register int i, j;
+ register int leapcnt32, leapi32;
+ register int timecnt32, timei32;
+ register int pass;
+ char * fullname;
+ static const struct tzhead tzh0;
+ static struct tzhead tzh;
+ zic_t one = 1;
+ zic_t y2038_boundary = one << 31;
+ int nats = timecnt + WORK_AROUND_QTBUG_53071;
+ zic_t *ats = emalloc(size_product(nats, sizeof *ats + 1));
+ void *typesptr = ats + nats;
+ unsigned char *types = typesptr;
+
+ /*
+ ** Sort.
+ */
+ if (timecnt > 1)
+ qsort(attypes, timecnt, sizeof *attypes, atcomp);
+ /*
+ ** Optimize.
+ */
+ {
+ int fromi;
+ int toi;
+
+ toi = 0;
+ fromi = 0;
+ while (fromi < timecnt && attypes[fromi].at < early_time)
+ ++fromi;
+ for ( ; fromi < timecnt; ++fromi) {
+ if (toi > 1 && ((attypes[fromi].at +
+ gmtoffs[attypes[toi - 1].type]) <=
+ (attypes[toi - 1].at +
+ gmtoffs[attypes[toi - 2].type]))) {
+ attypes[toi - 1].type =
+ attypes[fromi].type;
+ continue;
+ }
+ if (toi == 0 ||
+ attypes[toi - 1].type != attypes[fromi].type)
+ attypes[toi++] = attypes[fromi];
+ }
+ timecnt = toi;
+ }
+ if (noise && timecnt > 1200)
+ warning(_("pre-2014 clients may mishandle"
+ " more than 1200 transition times"));
+ /*
+ ** Transfer.
+ */
+ for (i = 0; i < timecnt; ++i) {
+ ats[i] = attypes[i].at;
+ types[i] = attypes[i].type;
+ }
+
+ /* Work around QTBUG-53071 for time stamps less than y2038_boundary - 1,
+ by inserting a no-op transition at time y2038_boundary - 1.
+ This works only for timestamps before the boundary, which
+ should be good enough in practice as QTBUG-53071 should be
+ long-dead by 2038. */
+ if (WORK_AROUND_QTBUG_53071 && timecnt != 0
+ && ats[timecnt - 1] < y2038_boundary - 1 && strchr(string, '<')) {
+ ats[timecnt] = y2038_boundary - 1;
+ types[timecnt] = types[timecnt - 1];
+ timecnt++;
+ }
+
+ /*
+ ** Correct for leap seconds.
+ */
+ for (i = 0; i < timecnt; ++i) {
+ j = leapcnt;
+ while (--j >= 0)
+ if (ats[i] > trans[j] - corr[j]) {
+ ats[i] = tadd(ats[i], corr[j]);
+ break;
+ }
+ }
+ /*
+ ** Figure out 32-bit-limited starts and counts.
+ */
+ timecnt32 = timecnt;
+ timei32 = 0;
+ leapcnt32 = leapcnt;
+ leapi32 = 0;
+ while (timecnt32 > 0 && !is32(ats[timecnt32 - 1]))
+ --timecnt32;
+ while (timecnt32 > 0 && !is32(ats[timei32])) {
+ --timecnt32;
+ ++timei32;
+ }
+ /*
+ ** Output an INT32_MIN "transition" if appropriate; see below.
+ */
+ if (timei32 > 0 && ats[timei32] > INT32_MIN) {
+ --timei32;
+ ++timecnt32;
+ }
+ while (leapcnt32 > 0 && !is32(trans[leapcnt32 - 1]))
+ --leapcnt32;
+ while (leapcnt32 > 0 && !is32(trans[leapi32])) {
+ --leapcnt32;
+ ++leapi32;
+ }
+ fullname = relname(directory, name);
+ /*
+ ** Remove old file, if any, to snap links.
+ */
+ if (itsdir(fullname) == 0 && remove(fullname) != 0 && errno != ENOENT) {
+ const char *e = strerror(errno);
+
+ fprintf(stderr, _("%s: Can't remove %s: %s\n"),
+ progname, fullname, e);
+ exit(EXIT_FAILURE);
+ }
+ if ((fp = fopen(fullname, "wb")) == NULL) {
+ if (! mkdirs(fullname))
+ exit(EXIT_FAILURE);
+ if ((fp = fopen(fullname, "wb")) == NULL) {
+ const char *e = strerror(errno);
+
+ fprintf(stderr, _("%s: Can't create %s: %s\n"),
+ progname, fullname, e);
+ exit(EXIT_FAILURE);
+ }
+ }
+ for (pass = 1; pass <= 2; ++pass) {
+ register int thistimei, thistimecnt;
+ register int thisleapi, thisleapcnt;
+ register int thistimelim, thisleaplim;
+ int writetype[TZ_MAX_TYPES];
+ int typemap[TZ_MAX_TYPES];
+ register int thistypecnt;
+ char thischars[TZ_MAX_CHARS];
+ char thischarcnt;
+ int indmap[TZ_MAX_CHARS];
+
+ if (pass == 1) {
+ thistimei = timei32;
+ thistimecnt = timecnt32;
+ thisleapi = leapi32;
+ thisleapcnt = leapcnt32;
+ } else {
+ thistimei = 0;
+ thistimecnt = timecnt;
+ thisleapi = 0;
+ thisleapcnt = leapcnt;
+ }
+ thistimelim = thistimei + thistimecnt;
+ thisleaplim = thisleapi + thisleapcnt;
+ for (i = 0; i < typecnt; ++i)
+ writetype[i] = thistimecnt == timecnt;
+ if (thistimecnt == 0) {
+ /*
+ ** No transition times fall in the current
+ ** (32- or 64-bit) window.
+ */
+ if (typecnt != 0)
+ writetype[typecnt - 1] = true;
+ } else {
+ for (i = thistimei - 1; i < thistimelim; ++i)
+ if (i >= 0)
+ writetype[types[i]] = true;
+ /*
+ ** For America/Godthab and Antarctica/Palmer
+ */
+ if (thistimei == 0)
+ writetype[0] = true;
+ }
+#ifndef LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH
+ /*
+ ** For some pre-2011 systems: if the last-to-be-written
+ ** standard (or daylight) type has an offset different from the
+ ** most recently used offset,
+ ** append an (unused) copy of the most recently used type
+ ** (to help get global "altzone" and "timezone" variables
+ ** set correctly).
+ */
+ {
+ register int mrudst, mrustd, hidst, histd, type;
+
+ hidst = histd = mrudst = mrustd = -1;
+ for (i = thistimei; i < thistimelim; ++i)
+ if (isdsts[types[i]])
+ mrudst = types[i];
+ else mrustd = types[i];
+ for (i = 0; i < typecnt; ++i)
+ if (writetype[i]) {
+ if (isdsts[i])
+ hidst = i;
+ else histd = i;
+ }
+ if (hidst >= 0 && mrudst >= 0 && hidst != mrudst &&
+ gmtoffs[hidst] != gmtoffs[mrudst]) {
+ isdsts[mrudst] = -1;
+ type = addtype(gmtoffs[mrudst],
+ &chars[abbrinds[mrudst]],
+ true,
+ ttisstds[mrudst],
+ ttisgmts[mrudst]);
+ isdsts[mrudst] = 1;
+ writetype[type] = true;
+ }
+ if (histd >= 0 && mrustd >= 0 && histd != mrustd &&
+ gmtoffs[histd] != gmtoffs[mrustd]) {
+ isdsts[mrustd] = -1;
+ type = addtype(gmtoffs[mrustd],
+ &chars[abbrinds[mrustd]],
+ false,
+ ttisstds[mrustd],
+ ttisgmts[mrustd]);
+ isdsts[mrustd] = 0;
+ writetype[type] = true;
+ }
+ }
+#endif /* !defined LEAVE_SOME_PRE_2011_SYSTEMS_IN_THE_LURCH */
+ thistypecnt = 0;
+ for (i = 0; i < typecnt; ++i)
+ typemap[i] = writetype[i] ? thistypecnt++ : -1;
+ for (i = 0; i < sizeof indmap / sizeof indmap[0]; ++i)
+ indmap[i] = -1;
+ thischarcnt = 0;
+ for (i = 0; i < typecnt; ++i) {
+ register char * thisabbr;
+
+ if (!writetype[i])
+ continue;
+ if (indmap[abbrinds[i]] >= 0)
+ continue;
+ thisabbr = &chars[abbrinds[i]];
+ for (j = 0; j < thischarcnt; ++j)
+ if (strcmp(&thischars[j], thisabbr) == 0)
+ break;
+ if (j == thischarcnt) {
+ strcpy(&thischars[(int) thischarcnt],
+ thisabbr);
+ thischarcnt += strlen(thisabbr) + 1;
+ }
+ indmap[abbrinds[i]] = j;
+ }
+#define DO(field) fwrite(tzh.field, sizeof tzh.field, 1, fp)
+ tzh = tzh0;
+ strncpy(tzh.tzh_magic, TZ_MAGIC, sizeof tzh.tzh_magic);
+ tzh.tzh_version[0] = version;
+ convert(thistypecnt, tzh.tzh_ttisgmtcnt);
+ convert(thistypecnt, tzh.tzh_ttisstdcnt);
+ convert(thisleapcnt, tzh.tzh_leapcnt);
+ convert(thistimecnt, tzh.tzh_timecnt);
+ convert(thistypecnt, tzh.tzh_typecnt);
+ convert(thischarcnt, tzh.tzh_charcnt);
+ DO(tzh_magic);
+ DO(tzh_version);
+ DO(tzh_reserved);
+ DO(tzh_ttisgmtcnt);
+ DO(tzh_ttisstdcnt);
+ DO(tzh_leapcnt);
+ DO(tzh_timecnt);
+ DO(tzh_typecnt);
+ DO(tzh_charcnt);
+#undef DO
+ for (i = thistimei; i < thistimelim; ++i)
+ if (pass == 1)
+ /*
+ ** Output an INT32_MIN "transition"
+ ** if appropriate; see above.
+ */
+ puttzcode(((ats[i] < INT32_MIN) ?
+ INT32_MIN : ats[i]), fp);
+ else puttzcode64(ats[i], fp);
+ for (i = thistimei; i < thistimelim; ++i) {
+ unsigned char uc;
+
+ uc = typemap[types[i]];
+ fwrite(&uc, sizeof uc, 1, fp);
+ }
+ for (i = 0; i < typecnt; ++i)
+ if (writetype[i]) {
+ puttzcode(gmtoffs[i], fp);
+ putc(isdsts[i], fp);
+ putc((unsigned char) indmap[abbrinds[i]], fp);
+ }
+ if (thischarcnt != 0)
+ fwrite(thischars, sizeof thischars[0],
+ thischarcnt, fp);
+ for (i = thisleapi; i < thisleaplim; ++i) {
+ register zic_t todo;
+
+ if (roll[i]) {
+ if (timecnt == 0 || trans[i] < ats[0]) {
+ j = 0;
+ while (isdsts[j])
+ if (++j >= typecnt) {
+ j = 0;
+ break;
+ }
+ } else {
+ j = 1;
+ while (j < timecnt &&
+ trans[i] >= ats[j])
+ ++j;
+ j = types[j - 1];
+ }
+ todo = tadd(trans[i], -gmtoffs[j]);
+ } else todo = trans[i];
+ if (pass == 1)
+ puttzcode(todo, fp);
+ else puttzcode64(todo, fp);
+ puttzcode(corr[i], fp);
+ }
+ for (i = 0; i < typecnt; ++i)
+ if (writetype[i])
+ putc(ttisstds[i], fp);
+ for (i = 0; i < typecnt; ++i)
+ if (writetype[i])
+ putc(ttisgmts[i], fp);
+ }
+ fprintf(fp, "\n%s\n", string);
+ close_file(fp, fullname);
+ free(ats);
+ free(fullname);
+}
+
+static char const *
+abbroffset(char *buf, zic_t offset)
+{
+ char sign = '+';
+ int seconds, minutes;
+
+ if (offset < 0) {
+ offset = -offset;
+ sign = '-';
+ }
+
+ seconds = offset % SECSPERMIN;
+ offset /= SECSPERMIN;
+ minutes = offset % MINSPERHOUR;
+ offset /= MINSPERHOUR;
+ if (100 <= offset) {
+ error(_("%%z UTC offset magnitude exceeds 99:59:59"));
+ return "%z";
+ } else {
+ char *p = buf;
+ *p++ = sign;
+ *p++ = '0' + offset / 10;
+ *p++ = '0' + offset % 10;
+ if (minutes | seconds) {
+ *p++ = '0' + minutes / 10;
+ *p++ = '0' + minutes % 10;
+ if (seconds) {
+ *p++ = '0' + seconds / 10;
+ *p++ = '0' + seconds % 10;
+ }
+ }
+ *p = '\0';
+ return buf;
+ }
+}
+
+static size_t
+doabbr(char *abbr, struct zone const *zp, char const *letters,
+ zic_t stdoff, bool doquotes)
+{
+ register char * cp;
+ register char * slashp;
+ register size_t len;
+ char const *format = zp->z_format;
+
+ slashp = strchr(format, '/');
+ if (slashp == NULL) {
+ char letterbuf[PERCENT_Z_LEN_BOUND + 1];
+ if (zp->z_format_specifier == 'z')
+ letters = abbroffset(letterbuf, zp->z_gmtoff + stdoff);
+ else if (!letters)
+ letters = "%s";
+ sprintf(abbr, format, letters);
+ } else if (stdoff != 0) {
+ strcpy(abbr, slashp + 1);
+ } else {
+ memcpy(abbr, format, slashp - format);
+ abbr[slashp - format] = '\0';
+ }
+ len = strlen(abbr);
+ if (!doquotes)
+ return len;
+ for (cp = abbr; is_alpha(*cp); cp++)
+ continue;
+ if (len > 0 && *cp == '\0')
+ return len;
+ abbr[len + 2] = '\0';
+ abbr[len + 1] = '>';
+ memmove(abbr + 1, abbr, len);
+ abbr[0] = '<';
+ return len + 2;
+}
+
+static void
+updateminmax(const zic_t x)
+{
+ if (min_year > x)
+ min_year = x;
+ if (max_year < x)
+ max_year = x;
+}
+
+static int
+stringoffset(char *result, zic_t offset)
+{
+ register int hours;
+ register int minutes;
+ register int seconds;
+ bool negative = offset < 0;
+ int len = negative;
+
+ if (negative) {
+ offset = -offset;
+ result[0] = '-';
+ }
+ seconds = offset % SECSPERMIN;
+ offset /= SECSPERMIN;
+ minutes = offset % MINSPERHOUR;
+ offset /= MINSPERHOUR;
+ hours = offset;
+ if (hours >= HOURSPERDAY * DAYSPERWEEK) {
+ result[0] = '\0';
+ return 0;
+ }
+ len += sprintf(result + len, "%d", hours);
+ if (minutes != 0 || seconds != 0) {
+ len += sprintf(result + len, ":%02d", minutes);
+ if (seconds != 0)
+ len += sprintf(result + len, ":%02d", seconds);
+ }
+ return len;
+}
+
+static int
+stringrule(char *result, const struct rule *const rp, const zic_t dstoff,
+ const zic_t gmtoff)
+{
+ register zic_t tod = rp->r_tod;
+ register int compat = 0;
+
+ if (rp->r_dycode == DC_DOM) {
+ register int month, total;
+
+ if (rp->r_dayofmonth == 29 && rp->r_month == TM_FEBRUARY)
+ return -1;
+ total = 0;
+ for (month = 0; month < rp->r_month; ++month)
+ total += len_months[0][month];
+ /* Omit the "J" in Jan and Feb, as that's shorter. */
+ if (rp->r_month <= 1)
+ result += sprintf(result, "%d", total + rp->r_dayofmonth - 1);
+ else
+ result += sprintf(result, "J%d", total + rp->r_dayofmonth);
+ } else {
+ register int week;
+ register int wday = rp->r_wday;
+ register int wdayoff;
+
+ if (rp->r_dycode == DC_DOWGEQ) {
+ wdayoff = (rp->r_dayofmonth - 1) % DAYSPERWEEK;
+ if (wdayoff)
+ compat = 2013;
+ wday -= wdayoff;
+ tod += wdayoff * SECSPERDAY;
+ week = 1 + (rp->r_dayofmonth - 1) / DAYSPERWEEK;
+ } else if (rp->r_dycode == DC_DOWLEQ) {
+ if (rp->r_dayofmonth == len_months[1][rp->r_month])
+ week = 5;
+ else {
+ wdayoff = rp->r_dayofmonth % DAYSPERWEEK;
+ if (wdayoff)
+ compat = 2013;
+ wday -= wdayoff;
+ tod += wdayoff * SECSPERDAY;
+ week = rp->r_dayofmonth / DAYSPERWEEK;
+ }
+ } else return -1; /* "cannot happen" */
+ if (wday < 0)
+ wday += DAYSPERWEEK;
+ result += sprintf(result, "M%d.%d.%d",
+ rp->r_month + 1, week, wday);
+ }
+ if (rp->r_todisgmt)
+ tod += gmtoff;
+ if (rp->r_todisstd && rp->r_stdoff == 0)
+ tod += dstoff;
+ if (tod != 2 * SECSPERMIN * MINSPERHOUR) {
+ *result++ = '/';
+ if (! stringoffset(result, tod))
+ return -1;
+ if (tod < 0) {
+ if (compat < 2013)
+ compat = 2013;
+ } else if (SECSPERDAY <= tod) {
+ if (compat < 1994)
+ compat = 1994;
+ }
+ }
+ return compat;
+}
+
+static int
+rule_cmp(struct rule const *a, struct rule const *b)
+{
+ if (!a)
+ return -!!b;
+ if (!b)
+ return 1;
+ if (a->r_hiyear != b->r_hiyear)
+ return a->r_hiyear < b->r_hiyear ? -1 : 1;
+ if (a->r_month - b->r_month != 0)
+ return a->r_month - b->r_month;
+ return a->r_dayofmonth - b->r_dayofmonth;
+}
+
+enum { YEAR_BY_YEAR_ZONE = 1 };
+
+static int
+stringzone(char *result, const struct zone *const zpfirst, const int zonecount)
+{
+ register const struct zone * zp;
+ register struct rule * rp;
+ register struct rule * stdrp;
+ register struct rule * dstrp;
+ register int i;
+ register const char * abbrvar;
+ register int compat = 0;
+ register int c;
+ size_t len;
+ int offsetlen;
+ struct rule stdr, dstr;
+
+ result[0] = '\0';
+ zp = zpfirst + zonecount - 1;
+ stdrp = dstrp = NULL;
+ for (i = 0; i < zp->z_nrules; ++i) {
+ rp = &zp->z_rules[i];
+ if (rp->r_hiwasnum || rp->r_hiyear != ZIC_MAX)
+ continue;
+ if (rp->r_yrtype != NULL)
+ continue;
+ if (rp->r_stdoff == 0) {
+ if (stdrp == NULL)
+ stdrp = rp;
+ else return -1;
+ } else {
+ if (dstrp == NULL)
+ dstrp = rp;
+ else return -1;
+ }
+ }
+ if (stdrp == NULL && dstrp == NULL) {
+ /*
+ ** There are no rules running through "max".
+ ** Find the latest std rule in stdabbrrp
+ ** and latest rule of any type in stdrp.
+ */
+ register struct rule *stdabbrrp = NULL;
+ for (i = 0; i < zp->z_nrules; ++i) {
+ rp = &zp->z_rules[i];
+ if (rp->r_stdoff == 0 && rule_cmp(stdabbrrp, rp) < 0)
+ stdabbrrp = rp;
+ if (rule_cmp(stdrp, rp) < 0)
+ stdrp = rp;
+ }
+ /*
+ ** Horrid special case: if year is 2037,
+ ** presume this is a zone handled on a year-by-year basis;
+ ** do not try to apply a rule to the zone.
+ */
+ if (stdrp != NULL && stdrp->r_hiyear == 2037)
+ return YEAR_BY_YEAR_ZONE;
+
+ if (stdrp != NULL && stdrp->r_stdoff != 0) {
+ /* Perpetual DST. */
+ dstr.r_month = TM_JANUARY;
+ dstr.r_dycode = DC_DOM;
+ dstr.r_dayofmonth = 1;
+ dstr.r_tod = 0;
+ dstr.r_todisstd = dstr.r_todisgmt = false;
+ dstr.r_stdoff = stdrp->r_stdoff;
+ dstr.r_abbrvar = stdrp->r_abbrvar;
+ stdr.r_month = TM_DECEMBER;
+ stdr.r_dycode = DC_DOM;
+ stdr.r_dayofmonth = 31;
+ stdr.r_tod = SECSPERDAY + stdrp->r_stdoff;
+ stdr.r_todisstd = stdr.r_todisgmt = false;
+ stdr.r_stdoff = 0;
+ stdr.r_abbrvar
+ = (stdabbrrp ? stdabbrrp->r_abbrvar : "");
+ dstrp = &dstr;
+ stdrp = &stdr;
+ }
+ }
+ if (stdrp == NULL && (zp->z_nrules != 0 || zp->z_stdoff != 0))
+ return -1;
+ abbrvar = (stdrp == NULL) ? "" : stdrp->r_abbrvar;
+ len = doabbr(result, zp, abbrvar, 0, true);
+ offsetlen = stringoffset(result + len, -zp->z_gmtoff);
+ if (! offsetlen) {
+ result[0] = '\0';
+ return -1;
+ }
+ len += offsetlen;
+ if (dstrp == NULL)
+ return compat;
+ len += doabbr(result + len, zp, dstrp->r_abbrvar, dstrp->r_stdoff, true);
+ if (dstrp->r_stdoff != SECSPERMIN * MINSPERHOUR) {
+ offsetlen = stringoffset(result + len,
+ -(zp->z_gmtoff + dstrp->r_stdoff));
+ if (! offsetlen) {
+ result[0] = '\0';
+ return -1;
+ }
+ len += offsetlen;
+ }
+ result[len++] = ',';
+ c = stringrule(result + len, dstrp, dstrp->r_stdoff, zp->z_gmtoff);
+ if (c < 0) {
+ result[0] = '\0';
+ return -1;
+ }
+ if (compat < c)
+ compat = c;
+ len += strlen(result + len);
+ result[len++] = ',';
+ c = stringrule(result + len, stdrp, dstrp->r_stdoff, zp->z_gmtoff);
+ if (c < 0) {
+ result[0] = '\0';
+ return -1;
+ }
+ if (compat < c)
+ compat = c;
+ return compat;
+}
+
+static void
+outzone(const struct zone *zpfirst, int zonecount)
+{
+ register const struct zone * zp;
+ register struct rule * rp;
+ register int i, j;
+ register bool usestart, useuntil;
+ register zic_t starttime, untiltime;
+ register zic_t gmtoff;
+ register zic_t stdoff;
+ register zic_t year;
+ register zic_t startoff;
+ register bool startttisstd;
+ register bool startttisgmt;
+ register int type;
+ register char * startbuf;
+ register char * ab;
+ register char * envvar;
+ register int max_abbr_len;
+ register int max_envvar_len;
+ register bool prodstic; /* all rules are min to max */
+ register int compat;
+ register bool do_extend;
+ register char version;
+
+ max_abbr_len = 2 + max_format_len + max_abbrvar_len;
+ max_envvar_len = 2 * max_abbr_len + 5 * 9;
+ startbuf = emalloc(max_abbr_len + 1);
+ ab = emalloc(max_abbr_len + 1);
+ envvar = emalloc(max_envvar_len + 1);
+ INITIALIZE(untiltime);
+ INITIALIZE(starttime);
+ /*
+ ** Now. . .finally. . .generate some useful data!
+ */
+ timecnt = 0;
+ typecnt = 0;
+ charcnt = 0;
+ prodstic = zonecount == 1;
+ /*
+ ** Thanks to Earl Chew
+ ** for noting the need to unconditionally initialize startttisstd.
+ */
+ startttisstd = false;
+ startttisgmt = false;
+ min_year = max_year = EPOCH_YEAR;
+ if (leapseen) {
+ updateminmax(leapminyear);
+ updateminmax(leapmaxyear + (leapmaxyear < ZIC_MAX));
+ }
+ for (i = 0; i < zonecount; ++i) {
+ zp = &zpfirst[i];
+ if (i < zonecount - 1)
+ updateminmax(zp->z_untilrule.r_loyear);
+ for (j = 0; j < zp->z_nrules; ++j) {
+ rp = &zp->z_rules[j];
+ if (rp->r_lowasnum)
+ updateminmax(rp->r_loyear);
+ if (rp->r_hiwasnum)
+ updateminmax(rp->r_hiyear);
+ if (rp->r_lowasnum || rp->r_hiwasnum)
+ prodstic = false;
+ }
+ }
+ /*
+ ** Generate lots of data if a rule can't cover all future times.
+ */
+ compat = stringzone(envvar, zpfirst, zonecount);
+ version = compat < 2013 ? ZIC_VERSION_PRE_2013 : ZIC_VERSION;
+ do_extend = compat < 0 || compat == YEAR_BY_YEAR_ZONE;
+ if (noise) {
+ if (!*envvar)
+ warning("%s %s",
+ _("no POSIX environment variable for zone"),
+ zpfirst->z_name);
+ else if (compat != 0 && compat != YEAR_BY_YEAR_ZONE) {
+ /* Circa-COMPAT clients, and earlier clients, might
+ not work for this zone when given dates before
+ 1970 or after 2038. */
+ warning(_("%s: pre-%d clients may mishandle"
+ " distant timestamps"),
+ zpfirst->z_name, compat);
+ }
+ }
+ if (do_extend) {
+ /*
+ ** Search through a couple of extra years past the obvious
+ ** 400, to avoid edge cases. For example, suppose a non-POSIX
+ ** rule applies from 2012 onwards and has transitions in March
+ ** and September, plus some one-off transitions in November
+ ** 2013. If zic looked only at the last 400 years, it would
+ ** set max_year=2413, with the intent that the 400 years 2014
+ ** through 2413 will be repeated. The last transition listed
+ ** in the tzfile would be in 2413-09, less than 400 years
+ ** after the last one-off transition in 2013-11. Two years
+ ** might be overkill, but with the kind of edge cases
+ ** available we're not sure that one year would suffice.
+ */
+ enum { years_of_observations = YEARSPERREPEAT + 2 };
+
+ if (min_year >= ZIC_MIN + years_of_observations)
+ min_year -= years_of_observations;
+ else min_year = ZIC_MIN;
+ if (max_year <= ZIC_MAX - years_of_observations)
+ max_year += years_of_observations;
+ else max_year = ZIC_MAX;
+ /*
+ ** Regardless of any of the above,
+ ** for a "proDSTic" zone which specifies that its rules
+ ** always have and always will be in effect,
+ ** we only need one cycle to define the zone.
+ */
+ if (prodstic) {
+ min_year = 1900;
+ max_year = min_year + years_of_observations;
+ }
+ }
+ /*
+ ** For the benefit of older systems,
+ ** generate data from 1900 through 2037.
+ */
+ if (min_year > 1900)
+ min_year = 1900;
+ if (max_year < 2037)
+ max_year = 2037;
+ for (i = 0; i < zonecount; ++i) {
+ /*
+ ** A guess that may well be corrected later.
+ */
+ stdoff = 0;
+ zp = &zpfirst[i];
+ usestart = i > 0 && (zp - 1)->z_untiltime > early_time;
+ useuntil = i < (zonecount - 1);
+ if (useuntil && zp->z_untiltime <= early_time)
+ continue;
+ gmtoff = zp->z_gmtoff;
+ eat(zp->z_filename, zp->z_linenum);
+ *startbuf = '\0';
+ startoff = zp->z_gmtoff;
+ if (zp->z_nrules == 0) {
+ stdoff = zp->z_stdoff;
+ doabbr(startbuf, zp, NULL, stdoff, false);
+ type = addtype(oadd(zp->z_gmtoff, stdoff),
+ startbuf, stdoff != 0, startttisstd,
+ startttisgmt);
+ if (usestart) {
+ addtt(starttime, type);
+ usestart = false;
+ } else addtt(early_time, type);
+ } else for (year = min_year; year <= max_year; ++year) {
+ if (useuntil && year > zp->z_untilrule.r_hiyear)
+ break;
+ /*
+ ** Mark which rules to do in the current year.
+ ** For those to do, calculate rpytime(rp, year);
+ */
+ for (j = 0; j < zp->z_nrules; ++j) {
+ rp = &zp->z_rules[j];
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ rp->r_todo = year >= rp->r_loyear &&
+ year <= rp->r_hiyear &&
+ yearistype(year, rp->r_yrtype);
+ if (rp->r_todo)
+ rp->r_temp = rpytime(rp, year);
+ }
+ for ( ; ; ) {
+ register int k;
+ register zic_t jtime, ktime;
+ register zic_t offset;
+
+ INITIALIZE(ktime);
+ if (useuntil) {
+ /*
+ ** Turn untiltime into UT
+ ** assuming the current gmtoff and
+ ** stdoff values.
+ */
+ untiltime = zp->z_untiltime;
+ if (!zp->z_untilrule.r_todisgmt)
+ untiltime = tadd(untiltime,
+ -gmtoff);
+ if (!zp->z_untilrule.r_todisstd)
+ untiltime = tadd(untiltime,
+ -stdoff);
+ }
+ /*
+ ** Find the rule (of those to do, if any)
+ ** that takes effect earliest in the year.
+ */
+ k = -1;
+ for (j = 0; j < zp->z_nrules; ++j) {
+ rp = &zp->z_rules[j];
+ if (!rp->r_todo)
+ continue;
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ offset = rp->r_todisgmt ? 0 : gmtoff;
+ if (!rp->r_todisstd)
+ offset = oadd(offset, stdoff);
+ jtime = rp->r_temp;
+ if (jtime == min_time ||
+ jtime == max_time)
+ continue;
+ jtime = tadd(jtime, -offset);
+ if (k < 0 || jtime < ktime) {
+ k = j;
+ ktime = jtime;
+ } else if (jtime == ktime) {
+ char const *dup_rules_msg =
+ _("two rules for same instant");
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ warning("%s", dup_rules_msg);
+ rp = &zp->z_rules[k];
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ error("%s", dup_rules_msg);
+ }
+ }
+ if (k < 0)
+ break; /* go on to next year */
+ rp = &zp->z_rules[k];
+ rp->r_todo = false;
+ if (useuntil && ktime >= untiltime)
+ break;
+ stdoff = rp->r_stdoff;
+ if (usestart && ktime == starttime)
+ usestart = false;
+ if (usestart) {
+ if (ktime < starttime) {
+ startoff = oadd(zp->z_gmtoff,
+ stdoff);
+ doabbr(startbuf, zp,
+ rp->r_abbrvar,
+ rp->r_stdoff,
+ false);
+ continue;
+ }
+ if (*startbuf == '\0' &&
+ startoff == oadd(zp->z_gmtoff,
+ stdoff)) {
+ doabbr(startbuf,
+ zp,
+ rp->r_abbrvar,
+ rp->r_stdoff,
+ false);
+ }
+ }
+ eats(zp->z_filename, zp->z_linenum,
+ rp->r_filename, rp->r_linenum);
+ doabbr(ab, zp, rp->r_abbrvar,
+ rp->r_stdoff, false);
+ offset = oadd(zp->z_gmtoff, rp->r_stdoff);
+ type = addtype(offset, ab, rp->r_stdoff != 0,
+ rp->r_todisstd, rp->r_todisgmt);
+ addtt(ktime, type);
+ }
+ }
+ if (usestart) {
+ if (*startbuf == '\0' &&
+ zp->z_format != NULL &&
+ strchr(zp->z_format, '%') == NULL &&
+ strchr(zp->z_format, '/') == NULL)
+ strcpy(startbuf, zp->z_format);
+ eat(zp->z_filename, zp->z_linenum);
+ if (*startbuf == '\0')
+error(_("can't determine time zone abbreviation to use just after until time"));
+ else addtt(starttime,
+ addtype(startoff, startbuf,
+ startoff != zp->z_gmtoff,
+ startttisstd,
+ startttisgmt));
+ }
+ /*
+ ** Now we may get to set starttime for the next zone line.
+ */
+ if (useuntil) {
+ startttisstd = zp->z_untilrule.r_todisstd;
+ startttisgmt = zp->z_untilrule.r_todisgmt;
+ starttime = zp->z_untiltime;
+ if (!startttisstd)
+ starttime = tadd(starttime, -stdoff);
+ if (!startttisgmt)
+ starttime = tadd(starttime, -gmtoff);
+ }
+ }
+ if (do_extend) {
+ /*
+ ** If we're extending the explicitly listed observations
+ ** for 400 years because we can't fill the POSIX-TZ field,
+ ** check whether we actually ended up explicitly listing
+ ** observations through that period. If there aren't any
+ ** near the end of the 400-year period, add a redundant
+ ** one at the end of the final year, to make it clear
+ ** that we are claiming to have definite knowledge of
+ ** the lack of transitions up to that point.
+ */
+ struct rule xr;
+ struct attype *lastat;
+ xr.r_month = TM_JANUARY;
+ xr.r_dycode = DC_DOM;
+ xr.r_dayofmonth = 1;
+ xr.r_tod = 0;
+ for (lastat = &attypes[0], i = 1; i < timecnt; i++)
+ if (attypes[i].at > lastat->at)
+ lastat = &attypes[i];
+ if (lastat->at < rpytime(&xr, max_year - 1)) {
+ /*
+ ** Create new type code for the redundant entry,
+ ** to prevent it being optimized away.
+ */
+ if (typecnt >= TZ_MAX_TYPES) {
+ error(_("too many local time types"));
+ exit(EXIT_FAILURE);
+ }
+ gmtoffs[typecnt] = gmtoffs[lastat->type];
+ isdsts[typecnt] = isdsts[lastat->type];
+ ttisstds[typecnt] = ttisstds[lastat->type];
+ ttisgmts[typecnt] = ttisgmts[lastat->type];
+ abbrinds[typecnt] = abbrinds[lastat->type];
+ ++typecnt;
+ addtt(rpytime(&xr, max_year + 1), typecnt-1);
+ }
+ }
+ writezone(zpfirst->z_name, envvar, version);
+ free(startbuf);
+ free(ab);
+ free(envvar);
+}
+
+static void
+addtt(zic_t starttime, int type)
+{
+ if (starttime <= early_time
+ || (timecnt == 1 && attypes[0].at < early_time)) {
+ gmtoffs[0] = gmtoffs[type];
+ isdsts[0] = isdsts[type];
+ ttisstds[0] = ttisstds[type];
+ ttisgmts[0] = ttisgmts[type];
+ if (abbrinds[type] != 0)
+ strcpy(chars, &chars[abbrinds[type]]);
+ abbrinds[0] = 0;
+ charcnt = strlen(chars) + 1;
+ typecnt = 1;
+ timecnt = 0;
+ type = 0;
+ }
+ attypes = growalloc(attypes, sizeof *attypes, timecnt, &timecnt_alloc);
+ attypes[timecnt].at = starttime;
+ attypes[timecnt].type = type;
+ ++timecnt;
+}
+
+static int
+addtype(zic_t gmtoff, char const *abbr, bool isdst, bool ttisstd, bool ttisgmt)
+{
+ register int i, j;
+
+ /*
+ ** See if there's already an entry for this zone type.
+ ** If so, just return its index.
+ */
+ for (i = 0; i < typecnt; ++i) {
+ if (gmtoff == gmtoffs[i] && isdst == isdsts[i] &&
+ strcmp(abbr, &chars[abbrinds[i]]) == 0 &&
+ ttisstd == ttisstds[i] &&
+ ttisgmt == ttisgmts[i])
+ return i;
+ }
+ /*
+ ** There isn't one; add a new one, unless there are already too
+ ** many.
+ */
+ if (typecnt >= TZ_MAX_TYPES) {
+ error(_("too many local time types"));
+ exit(EXIT_FAILURE);
+ }
+ if (! (-1L - 2147483647L <= gmtoff && gmtoff <= 2147483647L)) {
+ error(_("UT offset out of range"));
+ exit(EXIT_FAILURE);
+ }
+ gmtoffs[i] = gmtoff;
+ isdsts[i] = isdst;
+ ttisstds[i] = ttisstd;
+ ttisgmts[i] = ttisgmt;
+
+ for (j = 0; j < charcnt; ++j)
+ if (strcmp(&chars[j], abbr) == 0)
+ break;
+ if (j == charcnt)
+ newabbr(abbr);
+ abbrinds[i] = j;
+ ++typecnt;
+ return i;
+}
+
+static void
+leapadd(zic_t t, bool positive, int rolling, int count)
+{
+ register int i, j;
+
+ if (leapcnt + (positive ? count : 1) > TZ_MAX_LEAPS) {
+ error(_("too many leap seconds"));
+ exit(EXIT_FAILURE);
+ }
+ for (i = 0; i < leapcnt; ++i)
+ if (t <= trans[i]) {
+ if (t == trans[i]) {
+ error(_("repeated leap second moment"));
+ exit(EXIT_FAILURE);
+ }
+ break;
+ }
+ do {
+ for (j = leapcnt; j > i; --j) {
+ trans[j] = trans[j - 1];
+ corr[j] = corr[j - 1];
+ roll[j] = roll[j - 1];
+ }
+ trans[i] = t;
+ corr[i] = positive ? 1 : -count;
+ roll[i] = rolling;
+ ++leapcnt;
+ } while (positive && --count != 0);
+}
+
+static void
+adjleap(void)
+{
+ register int i;
+ register zic_t last = 0;
+
+ /*
+ ** propagate leap seconds forward
+ */
+ for (i = 0; i < leapcnt; ++i) {
+ trans[i] = tadd(trans[i], last);
+ last = corr[i] += last;
+ }
+}
+
+static bool
+yearistype(int year, const char *type)
+{
+ static char * buf;
+ int result;
+
+ if (type == NULL || *type == '\0')
+ return true;
+ buf = erealloc(buf, 132 + strlen(yitcommand) + strlen(type));
+ sprintf(buf, "%s %d %s", yitcommand, year, type);
+ result = system(buf);
+ if (WIFEXITED(result)) switch (WEXITSTATUS(result)) {
+ case 0:
+ return true;
+ case 1:
+ return false;
+ }
+ error(_("Wild result from command execution"));
+ fprintf(stderr, _("%s: command was '%s', result was %d\n"),
+ progname, buf, result);
+ for ( ; ; )
+ exit(EXIT_FAILURE);
+}
+
+/* Is A a space character in the C locale? */
+static bool
+is_space(char a)
+{
+ switch (a) {
+ default:
+ return false;
+ case ' ': case '\f': case '\n': case '\r': case '\t': case '\v':
+ return true;
+ }
+}
+
+/* Is A an alphabetic character in the C locale? */
+static bool
+is_alpha(char a)
+{
+ switch (a) {
+ default:
+ return false;
+ case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
+ case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
+ case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
+ case 'V': case 'W': case 'X': case 'Y': case 'Z':
+ case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
+ case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
+ case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
+ case 'v': case 'w': case 'x': case 'y': case 'z':
+ return true;
+ }
+}
+
+/* If A is an uppercase character in the C locale, return its lowercase
+ counterpart. Otherwise, return A. */
+static char
+lowerit(char a)
+{
+ switch (a) {
+ default: return a;
+ case 'A': return 'a'; case 'B': return 'b'; case 'C': return 'c';
+ case 'D': return 'd'; case 'E': return 'e'; case 'F': return 'f';
+ case 'G': return 'g'; case 'H': return 'h'; case 'I': return 'i';
+ case 'J': return 'j'; case 'K': return 'k'; case 'L': return 'l';
+ case 'M': return 'm'; case 'N': return 'n'; case 'O': return 'o';
+ case 'P': return 'p'; case 'Q': return 'q'; case 'R': return 'r';
+ case 'S': return 's'; case 'T': return 't'; case 'U': return 'u';
+ case 'V': return 'v'; case 'W': return 'w'; case 'X': return 'x';
+ case 'Y': return 'y'; case 'Z': return 'z';
+ }
+}
+
+/* case-insensitive equality */
+static ATTRIBUTE_PURE bool
+ciequal(register const char *ap, register const char *bp)
+{
+ while (lowerit(*ap) == lowerit(*bp++))
+ if (*ap++ == '\0')
+ return true;
+ return false;
+}
+
+static ATTRIBUTE_PURE bool
+itsabbr(register const char *abbr, register const char *word)
+{
+ if (lowerit(*abbr) != lowerit(*word))
+ return false;
+ ++word;
+ while (*++abbr != '\0')
+ do {
+ if (*word == '\0')
+ return false;
+ } while (lowerit(*word++) != lowerit(*abbr));
+ return true;
+}
+
+static ATTRIBUTE_PURE const struct lookup *
+byword(const char *word, const struct lookup *table)
+{
+ register const struct lookup * foundlp;
+ register const struct lookup * lp;
+
+ if (word == NULL || table == NULL)
+ return NULL;
+ /*
+ ** Look for exact match.
+ */
+ for (lp = table; lp->l_word != NULL; ++lp)
+ if (ciequal(word, lp->l_word))
+ return lp;
+ /*
+ ** Look for inexact match.
+ */
+ foundlp = NULL;
+ for (lp = table; lp->l_word != NULL; ++lp)
+ if (itsabbr(word, lp->l_word)) {
+ if (foundlp == NULL)
+ foundlp = lp;
+ else return NULL; /* multiple inexact matches */
+ }
+ return foundlp;
+}
+
+static char **
+getfields(register char *cp)
+{
+ register char * dp;
+ register char ** array;
+ register int nsubs;
+
+ if (cp == NULL)
+ return NULL;
+ array = emalloc(size_product(strlen(cp) + 1, sizeof *array));
+ nsubs = 0;
+ for ( ; ; ) {
+ while (is_space(*cp))
+ ++cp;
+ if (*cp == '\0' || *cp == '#')
+ break;
+ array[nsubs++] = dp = cp;
+ do {
+ if ((*dp = *cp++) != '"')
+ ++dp;
+ else while ((*dp = *cp++) != '"')
+ if (*dp != '\0')
+ ++dp;
+ else {
+ error(_(
+ "Odd number of quotation marks"
+ ));
+ exit(1);
+ }
+ } while (*cp && *cp != '#' && !is_space(*cp));
+ if (is_space(*cp))
+ ++cp;
+ *dp = '\0';
+ }
+ array[nsubs] = NULL;
+ return array;
+}
+
+static _Noreturn void
+time_overflow(void)
+{
+ error(_("time overflow"));
+ exit(EXIT_FAILURE);
+}
+
+static ATTRIBUTE_PURE zic_t
+oadd(zic_t t1, zic_t t2)
+{
+ if (t1 < 0 ? t2 < ZIC_MIN - t1 : ZIC_MAX - t1 < t2)
+ time_overflow();
+ return t1 + t2;
+}
+
+static ATTRIBUTE_PURE zic_t
+tadd(zic_t t1, zic_t t2)
+{
+ if (t1 < 0) {
+ if (t2 < min_time - t1) {
+ if (t1 != min_time)
+ time_overflow();
+ return min_time;
+ }
+ } else {
+ if (max_time - t1 < t2) {
+ if (t1 != max_time)
+ time_overflow();
+ return max_time;
+ }
+ }
+ return t1 + t2;
+}
+
+/*
+** Given a rule, and a year, compute the date (in seconds since January 1,
+** 1970, 00:00 LOCAL time) in that year that the rule refers to.
+*/
+
+static zic_t
+rpytime(const struct rule *rp, zic_t wantedy)
+{
+ register int m, i;
+ register zic_t dayoff; /* with a nod to Margaret O. */
+ register zic_t t, y;
+
+ if (wantedy == ZIC_MIN)
+ return min_time;
+ if (wantedy == ZIC_MAX)
+ return max_time;
+ dayoff = 0;
+ m = TM_JANUARY;
+ y = EPOCH_YEAR;
+ while (wantedy != y) {
+ if (wantedy > y) {
+ i = len_years[isleap(y)];
+ ++y;
+ } else {
+ --y;
+ i = -len_years[isleap(y)];
+ }
+ dayoff = oadd(dayoff, i);
+ }
+ while (m != rp->r_month) {
+ i = len_months[isleap(y)][m];
+ dayoff = oadd(dayoff, i);
+ ++m;
+ }
+ i = rp->r_dayofmonth;
+ if (m == TM_FEBRUARY && i == 29 && !isleap(y)) {
+ if (rp->r_dycode == DC_DOWLEQ)
+ --i;
+ else {
+ error(_("use of 2/29 in non leap-year"));
+ exit(EXIT_FAILURE);
+ }
+ }
+ --i;
+ dayoff = oadd(dayoff, i);
+ if (rp->r_dycode == DC_DOWGEQ || rp->r_dycode == DC_DOWLEQ) {
+ register zic_t wday;
+
+#define LDAYSPERWEEK ((zic_t) DAYSPERWEEK)
+ wday = EPOCH_WDAY;
+ /*
+ ** Don't trust mod of negative numbers.
+ */
+ if (dayoff >= 0)
+ wday = (wday + dayoff) % LDAYSPERWEEK;
+ else {
+ wday -= ((-dayoff) % LDAYSPERWEEK);
+ if (wday < 0)
+ wday += LDAYSPERWEEK;
+ }
+ while (wday != rp->r_wday)
+ if (rp->r_dycode == DC_DOWGEQ) {
+ dayoff = oadd(dayoff, 1);
+ if (++wday >= LDAYSPERWEEK)
+ wday = 0;
+ ++i;
+ } else {
+ dayoff = oadd(dayoff, -1);
+ if (--wday < 0)
+ wday = LDAYSPERWEEK - 1;
+ --i;
+ }
+ if (i < 0 || i >= len_months[isleap(y)][m]) {
+ if (noise)
+ warning(_("rule goes past start/end of month; \
+will not work with pre-2004 versions of zic"));
+ }
+ }
+ if (dayoff < min_time / SECSPERDAY)
+ return min_time;
+ if (dayoff > max_time / SECSPERDAY)
+ return max_time;
+ t = (zic_t) dayoff * SECSPERDAY;
+ return tadd(t, rp->r_tod);
+}
+
+static void
+newabbr(const char *string)
+{
+ register int i;
+
+ if (strcmp(string, GRANDPARENTED) != 0) {
+ register const char * cp;
+ const char * mp;
+
+ cp = string;
+ mp = NULL;
+ while (is_alpha(*cp) || ('0' <= *cp && *cp <= '9')
+ || *cp == '-' || *cp == '+')
+ ++cp;
+ if (noise && cp - string < 3)
+ mp = _("time zone abbreviation has fewer than 3 characters");
+ if (cp - string > ZIC_MAX_ABBR_LEN_WO_WARN)
+ mp = _("time zone abbreviation has too many characters");
+ if (*cp != '\0')
+mp = _("time zone abbreviation differs from POSIX standard");
+ if (mp != NULL)
+ warning("%s (%s)", mp, string);
+ }
+ i = strlen(string) + 1;
+ if (charcnt + i > TZ_MAX_CHARS) {
+ error(_("too many, or too long, time zone abbreviations"));
+ exit(EXIT_FAILURE);
+ }
+ strcpy(&chars[charcnt], string);
+ charcnt += i;
+}
+
+static bool
+mkdirs(char *argname)
+{
+ register char * name;
+ register char * cp;
+
+ if (argname == NULL || *argname == '\0')
+ return true;
+ cp = name = ecpyalloc(argname);
+ while ((cp = strchr(cp + 1, '/')) != 0) {
+ *cp = '\0';
+#ifdef HAVE_DOS_FILE_NAMES
+ /*
+ ** DOS drive specifier?
+ */
+ if (is_alpha(name[0]) && name[1] == ':' && name[2] == '\0') {
+ *cp = '/';
+ continue;
+ }
+#endif
+ /*
+ ** Try to create it. It's OK if creation fails because
+ ** the directory already exists, perhaps because some
+ ** other process just created it.
+ */
+ if (mkdir(name, MKDIR_UMASK) != 0) {
+ int err = errno;
+ if (itsdir(name) <= 0) {
+ char const *e = strerror(err);
+ warning(_("%s: Can't create directory"
+ " %s: %s"),
+ progname, name, e);
+ free(name);
+ return false;
+ }
+ }
+ *cp = '/';
+ }
+ free(name);
+ return true;
+}
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