/* Reentrant string tokenizer.  Generic version.

   Copyright (C) 1991,1996-1999,2001,2004 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, write to the Free

   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA

   02111-1307 USA.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <string.h>

/* Parse S into tokens separated by characters in DELIM.

   If S is NULL, the saved pointer in SAVE_PTR is used as

   the next starting point.  For example:

	char s[] = "-abc-=-def";

	char *sp;

	x = strtok_r(s, "-", &sp);	// x = "abc", sp = "=-def"

	x = strtok_r(NULL, "-=", &sp);	// x = "def", sp = NULL

	x = strtok_r(NULL, "=", &sp);	// x = NULL

		// s = "abc\0-def\0"

*/

char *

glibc_strtok_r (char *s, const char *delim, char **save_ptr)

{

  char *token;

  if (s == NULL)

    s = *save_ptr;

  /* Scan leading delimiters.  */

  s += strspn (s, delim);

  if (*s == '\0')

    {

      *save_ptr = s;

      return NULL;

    }

  /* Find the end of the token.  */

  token = s;

  s = strpbrk (token, delim);

  if (s == NULL)

    /* This token finishes the string.  */

    *save_ptr = strchr (token, '\0');

  else

    {

      /* Terminate the token and make *SAVE_PTR point past it.  */

      *s = '\0';

      *save_ptr = s + 1;

    }

  return token;

}