xref: /openbsd/lib/libc/string/wcscspn.c (revision e5dd7070)
1 /*	$OpenBSD: wcscspn.c,v 1.4 2015/09/12 16:23:14 guenther Exp $	*/
2 /*	$NetBSD: wcscspn.c,v 1.2 2001/01/03 14:29:36 lukem Exp $	*/
3 
4 /*-
5  * Copyright (c)1999 Citrus Project,
6  * All rights reserved.
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.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  *	citrus Id: wcscspn.c,v 1.1 1999/12/29 21:47:45 tshiozak Exp
30  */
31 
32 #include <wchar.h>
33 
34 size_t
35 wcscspn(const wchar_t *s, const wchar_t *set)
36 {
37 	const wchar_t *p;
38 	const wchar_t *q;
39 
40 	p = s;
41 	while (*p) {
42 		q = set;
43 		while (*q) {
44 			if (*p == *q)
45 				goto done;
46 			q++;
47 		}
48 		p++;
49 	}
50 
51 done:
52 	return (p - s);
53 }
54 DEF_STRONG(wcscspn);
55