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1 /*-
2 * Copyright (c) 2002-2004 Tim J. Robbins.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: src/lib/libc/locale/mbtowc.c,v 1.11 2004/07/29 06:18:40 tjr Exp $");
29
30 #include "xlocale_private.h"
31
32 #include <stdlib.h>
33 #include <wchar.h>
34 #include "mblocal.h"
35
36 int
37 mbtowc_l(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
38 locale_t loc)
39 {
40 static const mbstate_t initial;
41 size_t rval;
42
43 NORMALIZE_LOCALE(loc);
44 if (s == NULL) {
45 /* No support for state dependent encodings. */
46 loc->__mbs_mbtowc = initial;
47 return (0);
48 }
49 rval = loc->__lc_ctype->__mbrtowc(pwc, s, n, &loc->__mbs_mbtowc, loc);
50 if (rval == (size_t)-1 || rval == (size_t)-2)
51 return (-1);
52 return ((int)rval);
53 }
54
55 int
56 mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n)
57 {
58 return mbtowc_l(pwc, s, n, __current_locale());
59 }