master xplshn/aruu / shared / libutil / strsep.c
 1/*
 2 * Copyright 2005-2014 Rich Felker, et al.
 3 *
 4 * Permission is hereby granted, free of charge, to any person obtaining
 5 * a copy of this software and associated documentation files (the
 6 * "Software"), to deal in the Software without restriction, including
 7 * without limitation the rights to use, copy, modify, merge, publish,
 8 * distribute, sublicense, and/or sell copies of the Software, and to
 9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22*/
23#include <string.h>
24
25#include "../util.h"
26
27char *
28strsep(char **str, const char *sep)
29{
30	char *s = *str, *end;
31	if (!s) return NULL;
32	end = s + strcspn(s, sep);
33	if (*end) *end++ = 0;
34	else end = 0;
35	*str = end;
36	return s;
37}