glibc/sysdeps/generic/strtok_r.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

69 lines
2.0 KiB
C

/* Reentrant string tokenizer. Generic version.
Copyright (C) 1991, 1996, 1997, 1998, 1999, 2001 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. */
#include <string.h>
#undef strtok_r
#undef __strtok_r
/* 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 *
__strtok_r (s, delim, save_ptr)
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 = __rawmemchr (token, '\0');
else
{
/* Terminate the token and make *SAVE_PTR point past it. */
*s = '\0';
*save_ptr = s + 1;
}
return token;
}
weak_alias (__strtok_r, strtok_r)