1/*-
| 1/*-
|
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
| 2 * Copyright (c) 2002, 2003 Tim J. Robbins.
3 * All rights reserved.
|
4 *
| 4 *
|
5 * This code is derived from software contributed to Berkeley by
6 * Paul Borman at Krystal Technologies.
7 *
| |
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
| 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.
|
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
| |
23 *
| 13 *
|
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
| 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
| 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
| 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#include <sys/cdefs.h>
| 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>
|
38__FBSDID("$FreeBSD: head/lib/libc/locale/mbtowc.c 106077 2002-10-28 08:24:46Z tjr $");
| 28__FBSDID("$FreeBSD: head/lib/libc/locale/mbtowc.c 118591 2003-08-07 07:59:36Z tjr $");
|
39
40#include <errno.h>
| 29
30#include <errno.h>
|
| 31#include <limits.h>
|
41#include <stdlib.h>
| 32#include <stdlib.h>
|
42#include <stddef.h>
43#include <rune.h>
| 33#include <string.h>
34#include <wchar.h>
|
44
45int
46mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n)
47{
| 35
36int
37mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n)
38{
|
48 const char *e;
49 rune_t r;
| 39 size_t rval;
|
50
51 if (s == NULL)
52 /* No support for state dependent encodings. */
| 40
41 if (s == NULL)
42 /* No support for state dependent encodings. */
|
53 return (0);
54 if ((r = sgetrune(s, n, &e)) == _INVALID_RUNE) {
55 errno = EILSEQ;
| 43 return (0);
44 /*
45 * We pass NULL as the state pointer to mbrtowc() because we don't
46 * support state-dependent encodings and don't want to waste time
47 * creating a zeroed mbstate_t that will not be used.
48 */
49 rval = mbrtowc(pwc, s, n, NULL);
50 if (rval == (size_t)-1 || rval == (size_t)-2)
|
56 return (-1);
| 51 return (-1);
|
| 52 if (rval > INT_MAX) {
53 errno = ERANGE;
54 return (-1);
|
57 }
| 55 }
|
58 if (pwc != NULL)
59 *pwc = r;
60 return (r == 0 ? 0 : e - s);
| 56 return ((int)rval);
|
61}
| 57}
|