1 /* $OpenBSD: mbrtowc_sb.c,v 1.3 2023/03/08 04:43:05 guenther Exp $ */
2
3 /*
4 * Copyright (c) 1991 The Regents of the University of California.
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 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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
32 #include <errno.h>
33 #include <stdlib.h>
34 #include <wchar.h>
35
36 size_t
mbrtowc(wchar_t * pwc,const char * s,size_t n,mbstate_t * ps)37 mbrtowc(wchar_t *pwc, const char *s, size_t n, mbstate_t *ps)
38 {
39
40 /* pwc may be NULL */
41 /* s may be NULL */
42 /* ps appears to be unused */
43
44 if (s == NULL)
45 return 0;
46 if (n == 0)
47 return (size_t)-2;
48 if (pwc)
49 *pwc = (wchar_t)(unsigned char)*s;
50 return (*s != '\0');
51 }
52
53 int
mbtowc(wchar_t * pwc,const char * s,size_t n)54 mbtowc(wchar_t *pwc, const char *s, size_t n)
55 {
56
57 /* pwc may be NULL */
58 /* s may be NULL */
59
60 return mbrtowc(pwc, s, n, NULL);
61 }
62
63