strsep.c - sbase - suckless unix tools
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       ---
       strsep.c (1352B)
       ---
            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 
           27 char *
           28 strsep(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 }