xref: /titanic_52/usr/src/lib/libresolv2/common/bsd/strpbrk.c (revision 68c47f65208790c466e5e484f2293d3baed71c6a)
1 #if defined(LIBC_SCCS) && !defined(lint)
2 static const char sccsid[] = "@(#)strpbrk.c	8.1 (Berkeley) 6/4/93";
3 static const char rcsid[] = "$Id: strpbrk.c,v 1.2 2005/04/27 04:56:12 sra Exp $";
4 #endif /* LIBC_SCCS and not lint */
5 
6 /*
7  * Copyright (c) 1985, 1993
8  *    The Regents of the University of California.  All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  * 3. All advertising materials mentioning features or use of this software
19  *    must display the following acknowledgement:
20  * 	This product includes software developed by the University of
21  * 	California, Berkeley and its contributors.
22  * 4. Neither the name of the University nor the names of its contributors
23  *    may be used to endorse or promote products derived from this software
24  *    without specific prior written permission.
25  *
26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36  * SUCH DAMAGE.
37  */
38 
39 #include "port_before.h"
40 
41 #include <sys/param.h>
42 #include <sys/cdefs.h>
43 
44 #include <string.h>
45 
46 #include "port_after.h"
47 
48 #ifndef NEED_STRPBRK
49 int __strpbrk_unneeded__;
50 #else
51 
52 /*%
53  * Find the first occurrence in s1 of a character in s2 (excluding NUL).
54  */
55 char *
56 strpbrk(const char *s1, const char *s2) {
57 	const char *scanp;
58 	int c, sc;
59 
60 	while ((c = *s1++) != 0) {
61 		for (scanp = s2; (sc = *scanp++) != 0;)
62 			if (sc == c)
63 				return ((char *)(s1 - 1));
64 	}
65 	return (NULL);
66 }
67 
68 #endif /*NEED_STRPBRK*/
69 
70 /*! \file */
71