/*-
* Copyright (c) 1998 Softweyr LLC. All rights reserved.
*
* strtok_r, from Berkeley strtok
* Oct 13, 1998 by Wes Peters <wes@softweyr.com>
*
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notices, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notices, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SOFTWEYR LLC, THE
* REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)strtok.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stddef.h>
#ifdef DEBUG_STRTOK
#include <stdio.h>
#endif
#include <string.h>
char *__strtok_r(char *, const char *, char **);
__weak_reference(__strtok_r, strtok_r);
char *
__strtok_r(char *s, const char *delim, char **last)
{
char *spanp, *tok;
int c, sc;
if(s == NULL && (s = *last) == NULL) {
return (NULL);
}
/*
* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
*/
cont:
c = *s++;
for(spanp = (char *)delim; (sc = *spanp++) != 0;) {
if(c == sc) {
goto cont;
}
}
if(c == 0) { /* no non-delimiter characters */
*last = NULL;
return (NULL);
}
tok = s - 1;
/*
* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
* Note that delim must have one NUL; we stop if we see that, too.
*/
for(;;) {
c = *s++;
spanp = (char *)delim;
do {
if((sc = *spanp++) == c) {
if(c == 0) {
s = NULL;
} else {
s[-1] = '\0';
}
*last = s;
return (tok);
}
} while(sc != 0);
}
/* NOTREACHED */
}
char *
strtok(char *s, const char *delim)
{
static char *last;
return (__strtok_r(s, delim, &last));
}
#ifdef DEBUG_STRTOK
/*
* Test the tokenizer.
*/
int
main(void)
{
char blah[80], test[80];
char *brkb, *brkt, *phrase, *sep, *word;
sep = "\\/:;=-";
phrase = "foo";
printf("String tokenizer test:\n");
strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function.");
for(word = strtok(test, sep); word; word = strtok(NULL, sep)) {
printf("Next word is \"%s\".\n", word);
}
strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function.");
for(word = strtok_r(test, sep, &brkt); word;
word = strtok_r(NULL, sep, &brkt)) {
strcpy(blah, "blah:blat:blab:blag");
for(phrase = strtok_r(blah, sep, &brkb); phrase;
phrase = strtok_r(NULL, sep, &brkb)) {
printf("So far we're at %s:%s\n", word, phrase);
}
}
return (0);
}
#endif /* DEBUG_STRTOK */
