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/*
* 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.
*/
#ifndef lint
static const char rcsid[] =
"$FreeBSD: src/lib/libc/string/strtok.c,v 1.3 2001/05/24 08:47:41 obrien Exp $";
#endif
#include <stddef.h>
#include <string.h>
char *
pg_strtok_r(char *s, const char *delim, char **last)
{
char *spanp;
int c, sc;
char *tok;
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
{
char *w = s - 1;
*w = '\0';
}
*last = s;
return tok;
}
}
while (sc != 0);
}
/* NOTREACHED */
}
char *
pg_strtok(char *s, const char *delim)
{
static char *last;
return pg_strtok_r(s, delim, &last);
}
#if defined(DEBUG_STRTOK)
/*
* Test the tokenizer.
*/
int
main()
{
char test[80], blah[80];
char *sep = "\\/:;=-";
char *word, *phrase, *brkt, *brkb;
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);
}
phrase = "foo";
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 */
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