64 lines
1.7 KiB
C
64 lines
1.7 KiB
C
/* Copyright (C) 1991, 1996, 1997, 1999, 2000 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 Library General Public License as
|
|
published by the Free Software Foundation; either version 2 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
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <string.h>
|
|
|
|
|
|
static char *olds;
|
|
|
|
#undef strtok
|
|
|
|
/* Parse S into tokens separated by characters in DELIM.
|
|
If S is NULL, the last string strtok() was called with is
|
|
used. For example:
|
|
char s[] = "-abc-=-def";
|
|
x = strtok(s, "-"); // x = "abc"
|
|
x = strtok(NULL, "-="); // x = "def"
|
|
x = strtok(NULL, "="); // x = NULL
|
|
// s = "abc\0-def\0"
|
|
*/
|
|
char *
|
|
strtok (s, delim)
|
|
char *s;
|
|
const char *delim;
|
|
{
|
|
char *token;
|
|
|
|
if (s == NULL)
|
|
s = olds;
|
|
|
|
/* Scan leading delimiters. */
|
|
s += strspn (s, delim);
|
|
if (*s == '\0')
|
|
return NULL;
|
|
|
|
/* Find the end of the token. */
|
|
token = s;
|
|
s = strpbrk (token, delim);
|
|
if (s == NULL)
|
|
/* This token finishes the string. */
|
|
olds = __rawmemchr (token, '\0');
|
|
else
|
|
{
|
|
/* Terminate the token and make OLDS point past it. */
|
|
*s = '\0';
|
|
olds = s + 1;
|
|
}
|
|
return token;
|
|
}
|