osdep/strsep.c

   1 /* strsep implementation for systems that do not have it in libc */
   2
   3 #include <stdio.h>
   4 #include <string.h>
   5
   6 #include "config.h"
   7
   8 char *strsep(char **stringp, const char *delim) {
   9   char *begin, *end;
  10
  11   begin = *stringp;
  12   if(begin == NULL)
  13     return NULL;
  14
  15   if(delim[0] == '\0' || delim[1] == '\0') {
  16     char ch = delim[0];
  17
  18     if(ch == '\0')
  19       end = NULL;
  20     else {
  21       if(*begin == ch)
  22         end = begin;
  23       else if(*begin == '\0')
  24         end = NULL;
  25       else
  26         end = strchr(begin + 1, ch);
  27     }
  28   }
  29   else
  30     end = strpbrk(begin, delim);
  31
  32   if(end) {
  33     *end++ = '\0';
  34     *stringp = end;
  35   }
  36   else
  37     *stringp = NULL;
  38
  39   return begin;
  40 }