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5b2abdfb 1/*-
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2 * Copyright (c) 2002-2004 Tim J. Robbins.
3 * All rights reserved.
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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.
e9ce8d39 13 *
3d9156a7 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
3d9156a7 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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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
9385eb3d 27#include <sys/cdefs.h>
3d9156a7 28__FBSDID("$FreeBSD: src/lib/libc/locale/mbtowc.c,v 1.11 2004/07/29 06:18:40 tjr Exp $");
9385eb3d 29
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30#include "xlocale_private.h"
31
9385eb3d 32#include <stdlib.h>
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33#include <wchar.h>
34#include "mblocal.h"
e9ce8d39 35
9385eb3d 36int
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37mbtowc_l(wchar_t * __restrict pwc, const char * __restrict s, size_t n,
38 locale_t loc)
e9ce8d39 39{
3d9156a7 40 static const mbstate_t initial;
3d9156a7 41 size_t rval;
5b2abdfb 42
ad3c9f2a 43 NORMALIZE_LOCALE(loc);
3d9156a7 44 if (s == NULL) {
9385eb3d 45 /* No support for state dependent encodings. */
ad3c9f2a 46 loc->__mbs_mbtowc = initial;
3d9156a7 47 return (0);
5b2abdfb 48 }
ad3c9f2a 49 rval = loc->__lc_ctype->__mbrtowc(pwc, s, n, &loc->__mbs_mbtowc, loc);
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50 if (rval == (size_t)-1 || rval == (size_t)-2)
51 return (-1);
52 return ((int)rval);
e9ce8d39 53}
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54
55int
56mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n)
57{
58 return mbtowc_l(pwc, s, n, __current_locale());
59}