Sync lib/libc/string with FreeBSD:
[dragonfly.git] / lib / libc / string / wcsspn.c
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1/*-
2 * Copyright (c)1999 Citrus Project,
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 * citrus Id: wcsspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
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27 *
28 * $NetBSD: wcsspn.c,v 1.1 2000/12/23 23:14:37 itojun Exp $
716024cd 29 * $FreeBSD: src/lib/libc/string/wcsspn.c,v 1.7 2002/09/21 00:29:23 tjr Exp $
bd4c62e8 30 * $DragonFly: src/lib/libc/string/wcsspn.c,v 1.3 2005/09/18 16:32:34 asmodai Exp $
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31 */
32
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33#include <wchar.h>
34
35size_t
bd4c62e8 36wcsspn(const wchar_t *s, const wchar_t *set)
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37{
38 const wchar_t *p;
39 const wchar_t *q;
40
41 p = s;
42 while (*p) {
43 q = set;
44 while (*q) {
45 if (*p == *q)
46 break;
47 q++;
48 }
49 if (!*q)
50 goto done;
51 p++;
52 }
53
54done:
55 return (p - s);
56}