1 /* $NetBSD: fputwc.c,v 1.5 2012/03/15 18:22:30 christos Exp $ */
2
3 /*-
4 * Copyright (c)2001 Citrus Project,
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $Citrus$
29 */
30
31 #include <sys/cdefs.h>
32 #if defined(LIBC_SCCS) && !defined(lint)
33 __RCSID("$NetBSD: fputwc.c,v 1.5 2012/03/15 18:22:30 christos Exp $");
34 #endif /* LIBC_SCCS and not lint */
35
36 #include <assert.h>
37 #include <errno.h>
38 #include <limits.h>
39 #include <stdio.h>
40 #include <wchar.h>
41 #include "reentrant.h"
42 #include "local.h"
43 #include "fvwrite.h"
44
45 wint_t
__fputwc_unlock(wchar_t wc,FILE * fp)46 __fputwc_unlock(wchar_t wc, FILE *fp)
47 {
48 struct wchar_io_data *wcio;
49 mbstate_t *st;
50 size_t size;
51 char buf[MB_LEN_MAX];
52 struct __suio uio;
53 struct __siov iov;
54
55 _DIAGASSERT(fp != NULL);
56
57 /* LINTED we don't play with buf */
58 iov.iov_base = (void *)buf;
59 uio.uio_iov = &iov;
60 uio.uio_iovcnt = 1;
61
62 _SET_ORIENTATION(fp, 1);
63 wcio = WCIO_GET(fp);
64 if (wcio == 0) {
65 errno = ENOMEM;
66 return WEOF;
67 }
68
69 wcio->wcio_ungetwc_inbuf = 0;
70 st = &wcio->wcio_mbstate_out;
71
72 size = wcrtomb(buf, wc, st);
73 if (size == (size_t)-1) {
74 errno = EILSEQ;
75 return WEOF;
76 }
77
78 _DIAGASSERT(size != 0);
79
80 uio.uio_resid = iov.iov_len = size;
81 if (__sfvwrite(fp, &uio)) {
82 return WEOF;
83 }
84
85 return (wint_t)wc;
86 }
87
88 wint_t
fputwc(wchar_t wc,FILE * fp)89 fputwc(wchar_t wc, FILE *fp)
90 {
91 wint_t r;
92
93 _DIAGASSERT(fp != NULL);
94
95 FLOCKFILE(fp);
96 r = __fputwc_unlock(wc, fp);
97 FUNLOCKFILE(fp);
98
99 return r;
100 }
101