1 /*- 2 * Copyright (c) 1992, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 1992, 1993, 1994, 1995, 1996 5 * Keith Bostic. All rights reserved. 6 * 7 * See the LICENSE file for redistribution information. 8 */ 9 10 /* 11 * The MARK and LMARK structures define positions in the file. There are 12 * two structures because the mark subroutines are the only places where 13 * anything cares about something other than line and column. 14 * 15 * Because of the different interfaces used by the db(3) package, curses, 16 * and users, the line number is 1 based and the column number is 0 based. 17 * Additionally, it is known that the out-of-band line number is less than 18 * any legal line number. The line number is of type recno_t, as that's 19 * the underlying type of the database. The column number is of type size_t, 20 * guaranteeing that we can malloc a line. 21 */ 22 struct _mark { 23 #define OOBLNO 0 /* Out-of-band line number. */ 24 recno_t lno; /* Line number. */ 25 size_t cno; /* Column number. */ 26 }; 27 28 struct _lmark { 29 SLIST_ENTRY(_lmark) q; /* Linked list of marks. */ 30 recno_t lno; /* Line number. */ 31 size_t cno; /* Column number. */ 32 /* XXXX Needed ? Can non ascii-chars be mark names ? */ 33 CHAR_T name; /* Mark name. */ 34 35 #define MARK_DELETED 0x01 /* Mark was deleted. */ 36 #define MARK_USERSET 0x02 /* User set this mark. */ 37 u_int8_t flags; 38 }; 39 40 #define ABSMARK1 '\'' /* Absolute mark name. */ 41 #define ABSMARK2 '`' /* Absolute mark name. */ 42