mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-26 11:47:31 +00:00
137 lines
3.9 KiB
C
137 lines
3.9 KiB
C
/*-
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Softweyr LLC, the
|
|
* University of California, Berkeley, and its contributors.
|
|
* 4. 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 *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 */
|