mpv/osdep/strsep.c

/*
 * strsep implementation for systems that do not have it in libc
 *
 * This file is part of MPlayer.
 *
 * MPlayer is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * MPlayer is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <string.h>

#include "config.h"
#include "strsep.h"

char *strsep(char **stringp, const char *delim) {
  char *begin, *end;

  begin = *stringp;
  if(begin == NULL)
    return NULL;

  if(delim[0] == '\0' || delim[1] == '\0') {
    char ch = delim[0];

    if(ch == '\0')
      end = NULL;
    else {
      if(*begin == ch)
        end = begin;
      else if(*begin == '\0')
        end = NULL;
      else
        end = strchr(begin + 1, ch);
    }
  }
  else
    end = strpbrk(begin, delim);

  if(end) {
    *end++ = '\0';
    *stringp = end;
  }
  else
    *stringp = NULL;

  return begin;
}