1 /*-
2 * Copyright (c) 2002-2004 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Copyright (c) 2011 The FreeBSD Foundation
6 * All rights reserved.
7 * Portions of this software were developed by David Chisnall
8 * under sponsorship from the FreeBSD Foundation.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $FreeBSD: head/lib/libc/stdio/fputwc.c 227753 2011-11-20 14:45:42Z theraven $
32 */
33
34
35 #include "namespace.h"
36 #include <errno.h>
37 #include <limits.h>
38 #include <stdio.h>
39 #include <stdlib.h>
40 #include <wchar.h>
41 #include "un-namespace.h"
42 #include "libc_private.h"
43 #include "local.h"
44 #include "mblocal.h"
45
46 /*
47 * Non-MT-safe version.
48 */
49 wint_t
__fputwc(wchar_t wc,FILE * fp,locale_t locale)50 __fputwc(wchar_t wc, FILE *fp, locale_t locale)
51 {
52 struct wchar_io_data *wcio;
53 mbstate_t *st;
54 char buf[MB_LEN_MAX];
55 size_t i, len;
56 struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
57
58 ORIENT(fp, 1);
59 wcio = WCIO_GET(fp);
60 if (wcio == NULL) {
61 errno = ENOMEM;
62 return WEOF;
63 }
64
65 wcio->wcio_ungetwc_inbuf = 0;
66 st = &wcio->wcio_mbstate_out;
67
68 if (MB_CUR_MAX == 1 && wc > 0 && wc <= UCHAR_MAX) {
69 /*
70 * Assume single-byte locale with no special encoding.
71 * A more careful test would be to check
72 * _CurrentRuneLocale->encoding.
73 */
74 *buf = (unsigned char)wc;
75 len = 1;
76 } else {
77 if ((len = l->__wcrtomb(buf, wc, st)) == (size_t)-1) {
78 fp->pub._flags |= __SERR;
79 return (WEOF);
80 }
81 }
82
83 for (i = 0; i < len; i++)
84 if (__sputc((unsigned char)buf[i], fp) == EOF)
85 return (WEOF);
86
87 return ((wint_t)wc);
88 }
89
90 /*
91 * MT-safe version.
92 */
93 wint_t
fputwc_l(wchar_t wc,FILE * fp,locale_t locale)94 fputwc_l(wchar_t wc, FILE *fp, locale_t locale)
95 {
96 wint_t r;
97 FIX_LOCALE(locale);
98
99 FLOCKFILE(fp);
100 r = __fputwc(wc, fp, locale);
101 FUNLOCKFILE(fp);
102
103 return (r);
104 }
105 wint_t
fputwc(wchar_t wc,FILE * fp)106 fputwc(wchar_t wc, FILE *fp)
107 {
108 return fputwc_l(wc, fp, __get_locale());
109 }
110