xref: /freebsd/lib/libc/amd64/string/strpbrk.c (revision f4fc317c364f2c81ad3d36763d8e5a60393ddbd1)
1*f4fc317cSRobert Clausecker /*-
2*f4fc317cSRobert Clausecker  * Copyright (c) 2023 The FreeBSD Foundation
3*f4fc317cSRobert Clausecker  *
4*f4fc317cSRobert Clausecker  * This software was developed by Robert Clausecker <fuz@FreeBSD.org>
5*f4fc317cSRobert Clausecker  * under sponsorship from the FreeBSD Foundation.
6*f4fc317cSRobert Clausecker  *
7*f4fc317cSRobert Clausecker  * Redistribution and use in source and binary forms, with or without
8*f4fc317cSRobert Clausecker  * modification, are permitted provided that the following conditions
9*f4fc317cSRobert Clausecker  * are met:
10*f4fc317cSRobert Clausecker  * 1. Redistributions of source code must retain the above copyright
11*f4fc317cSRobert Clausecker  *    notice, this list of conditions and the following disclaimer.
12*f4fc317cSRobert Clausecker  * 2. Redistributions in binary form must reproduce the above copyright
13*f4fc317cSRobert Clausecker  *    notice, this list of conditions and the following disclaimer in the
14*f4fc317cSRobert Clausecker  *    documentation and/or other materials provided with the distribution.
15*f4fc317cSRobert Clausecker  *
16*f4fc317cSRobert Clausecker  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ''AS IS'' AND
17*f4fc317cSRobert Clausecker  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18*f4fc317cSRobert Clausecker  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19*f4fc317cSRobert Clausecker  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20*f4fc317cSRobert Clausecker  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21*f4fc317cSRobert Clausecker  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22*f4fc317cSRobert Clausecker  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23*f4fc317cSRobert Clausecker  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24*f4fc317cSRobert Clausecker  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25*f4fc317cSRobert Clausecker  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*f4fc317cSRobert Clausecker  * SUCH DAMAGE
27*f4fc317cSRobert Clausecker  */
28*f4fc317cSRobert Clausecker 
29*f4fc317cSRobert Clausecker #include <sys/cdefs.h>
30*f4fc317cSRobert Clausecker 
31*f4fc317cSRobert Clausecker #include <string.h>
32*f4fc317cSRobert Clausecker 
33*f4fc317cSRobert Clausecker size_t __strcspn(const char *, const char *);
34*f4fc317cSRobert Clausecker 
35*f4fc317cSRobert Clausecker char *
strpbrk(const char * s,const char * charset)36*f4fc317cSRobert Clausecker strpbrk(const char *s, const char *charset)
37*f4fc317cSRobert Clausecker {
38*f4fc317cSRobert Clausecker 	size_t loc;
39*f4fc317cSRobert Clausecker 
40*f4fc317cSRobert Clausecker 	loc = __strcspn(s, charset);
41*f4fc317cSRobert Clausecker 
42*f4fc317cSRobert Clausecker 	return (s[loc] == '\0' ? NULL : (char *)&s[loc]);
43*f4fc317cSRobert Clausecker }
44