src/strsep.c

   1 /*
   2     Copyright (C) 2018-2023 Ben Kibbey <bjk@luxsci.net>
   3
   4     This file is part of libpwmd.
   5
   6     This library is free software; you can redistribute it and/or
   7     modify it under the terms of the GNU Lesser General Public
   8     License version 2.1 as published by the Free Software Foundation.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public
  16     License along with this library; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
  18     USA
  19 */
  20 #include <stdio.h>
  21
  22 char *strsep (char **src, const char *sep)
  23 {
  24   char *p;
  25   char *ret = *src;
  26
  27   if (!ret)
  28     return NULL;
  29
  30   for (p = *src; p && *p; p++)
  31   {
  32     const char *s;
  33
  34     for (s = sep; s && *s; s++)
  35     {
  36       if (*s == *p)
  37       {
  38         *src = p+1;
  39         *p = 0;
  40         return ret;
  41       }
  42     }
  43   }
  44
  45   p = *src;
  46   *src = NULL;
  47   return p;
  48 }