xref: /netbsd-src/external/bsd/nvi/dist/clib/strpbrk.c (revision 2f698edb5c1cb2dcd9e762b0abb50c41dde8b6b7)
1 /*
2  * Copyright (c) 1985, 1993
3  *	The Regents of the University of California.  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  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by the University of
16  *	California, Berkeley and its contributors.
17  * 4. Neither the name of the University nor the names of its contributors
18  *    may be used to endorse or promote products derived from this software
19  *    without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  */
33 
34 #include "config.h"
35 
36 #if defined(LIBC_SCCS) && !defined(lint)
37 static const char sccsid[] = "@(#)strpbrk.c	8.1 (Berkeley) 6/4/93";
38 #endif /* LIBC_SCCS and not lint */
39 #else
40 __RCSID("$NetBSD: strpbrk.c,v 1.2 2014/01/26 21:43:45 christos Exp $");
41 #endif
42 
43 #include <string.h>
44 
45 /*
46  * Find the first occurrence in s1 of a character in s2 (excluding NUL).
47  *
48  * PUBLIC: #ifndef HAVE_STRPBRK
49  * PUBLIC: char *strpbrk __P((const char *, const char *));
50  * PUBLIC: #endif
51  */
52 char *
strpbrk(register const char * s1,register const char * s2)53 strpbrk(register const char *s1, register const char *s2)
54 {
55 	register const char *scanp;
56 	register int c, sc;
57 
58 	while ((c = *s1++) != 0) {
59 		for (scanp = s2; (sc = *scanp++) != 0;)
60 			if (sc == c)
61 				return ((char *)(s1 - 1));
62 	}
63 	return (NULL);
64 }
65