872b698bd4
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1998 Softweyr LLC. All rights reserved.
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*
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* strtok_r, from Berkeley strtok
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* Oct 13, 1998 by Wes Peters <wes@softweyr.com>
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*
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* Copyright (c) 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notices, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notices, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY SOFTWEYR LLC, THE REGENTS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SOFTWEYR LLC, THE
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* REGENTS, OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)strtok.c 8.1 (Berkeley) 6/4/93";
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#endif /* LIBC_SCCS and not lint */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <stddef.h>
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#ifdef DEBUG_STRTOK
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#include <stdio.h>
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#endif
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#include <string.h>
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char *__strtok_r(char *, const char *, char **);
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__weak_reference(__strtok_r, strtok_r);
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char *
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__strtok_r(char *s, const char *delim, char **last)
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{
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char *spanp, *tok;
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int c, sc;
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if (s == NULL && (s = *last) == NULL)
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return (NULL);
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/*
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* Skip (span) leading delimiters (s += strspn(s, delim), sort of).
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*/
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cont:
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c = *s++;
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for (spanp = (char *)delim; (sc = *spanp++) != 0;) {
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if (c == sc)
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goto cont;
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}
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if (c == 0) { /* no non-delimiter characters */
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*last = NULL;
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return (NULL);
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}
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tok = s - 1;
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/*
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* Scan token (scan for delimiters: s += strcspn(s, delim), sort of).
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* Note that delim must have one NUL; we stop if we see that, too.
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*/
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for (;;) {
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c = *s++;
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spanp = (char *)delim;
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do {
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if ((sc = *spanp++) == c) {
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if (c == 0)
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s = NULL;
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else
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s[-1] = '\0';
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*last = s;
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return (tok);
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}
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} while (sc != 0);
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}
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/* NOTREACHED */
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}
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char *
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strtok(char *s, const char *delim)
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{
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static char *last;
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return (__strtok_r(s, delim, &last));
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}
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#ifdef DEBUG_STRTOK
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/*
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* Test the tokenizer.
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*/
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int
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main(void)
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{
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char blah[80], test[80];
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char *brkb, *brkt, *phrase, *sep, *word;
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sep = "\\/:;=-";
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phrase = "foo";
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printf("String tokenizer test:\n");
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strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function.");
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for (word = strtok(test, sep); word; word = strtok(NULL, sep))
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printf("Next word is \"%s\".\n", word);
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strcpy(test, "This;is.a:test:of=the/string\\tokenizer-function.");
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for (word = strtok_r(test, sep, &brkt); word;
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word = strtok_r(NULL, sep, &brkt)) {
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strcpy(blah, "blah:blat:blab:blag");
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for (phrase = strtok_r(blah, sep, &brkb); phrase;
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phrase = strtok_r(NULL, sep, &brkb))
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printf("So far we're at %s:%s\n", word, phrase);
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}
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return (0);
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}
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#endif /* DEBUG_STRTOK */
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