xref: /freebsd/lib/libc/string/wcsspn.c (revision 2be1a816b9ff69588e55be0a84cbe2a31efc0f2f)
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
27  */
28 
29 #include <sys/cdefs.h>
30 #if 0
31 #if defined(LIBC_SCCS) && !defined(lint)
32 __RCSID("$NetBSD: wcsspn.c,v 1.1 2000/12/23 23:14:37 itojun Exp $");
33 #endif /* LIBC_SCCS and not lint */
34 #endif
35 __FBSDID("$FreeBSD$");
36 
37 #include <wchar.h>
38 
39 size_t
40 wcsspn(s, set)
41 	const wchar_t *s;
42 	const wchar_t *set;
43 {
44 	const wchar_t *p;
45 	const wchar_t *q;
46 
47 	p = s;
48 	while (*p) {
49 		q = set;
50 		while (*q) {
51 			if (*p == *q)
52 				break;
53 			q++;
54 		}
55 		if (!*q)
56 			goto done;
57 		p++;
58 	}
59 
60 done:
61 	return (p - s);
62 }
63