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rewrite to work around BSD announcement license issues, this is also
somewhat easier to understand if I may say so. It is slightly slower.
This commit is contained in:
Daniel Stenberg
parent
ce07e79f3c
commit
56f6815d3d
126
lib/strtok.c
126
lib/strtok.c
@ -5,7 +5,7 @@
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 2000, Daniel Stenberg, <daniel@haxx.se>, et al.
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* Copyright (C) 2001, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* In order to be useful for every potential user, curl and libcurl are
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* dual-licensed under the MPL and the MIT/X-derivate licenses.
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@ -21,108 +21,46 @@
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* $Id$
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*****************************************************************************/
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#include "setup.h"
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#ifndef HAVE_STRTOK_R
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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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*
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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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*
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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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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Softweyr LLC, the
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* University of California, Berkeley, and its contributors.
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*
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* 4. 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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#include <stddef.h>
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char *
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Curl_strtok_r(char *s, const char *delim, char **last)
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Curl_strtok_r(char *ptr, const char *sep, char **end)
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{
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char *spanp;
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int c, sc;
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char *tok;
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if (!ptr)
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/* we got NULL input so then we get our last position instead */
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ptr = *end;
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if (s == NULL && (s = *last) == NULL) {
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/* pass all letters that are including in the separator string */
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while (*ptr && strchr(sep, *ptr))
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++ptr;
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if (*ptr) {
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/* so this is where the next piece of string starts */
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char *start = ptr;
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/* set the end pointer to the first byte after the start */
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*end = ptr + 1;
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/* scan through the string to find where it ends, it ends on a
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null byte or a character that exists in the separator string */
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while (**end && !strchr(sep, **end))
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++*end;
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if (**end) {
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/* the end is not a null byte */
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**end = '\0';, /* zero terminate it! */
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++*end; /* advance the last pointer to beyond the null byte */
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}
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return start; /* return the position where the string starts */
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}
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/* we ended up on a null byte, there are no more strings to find! */
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return NULL;
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}
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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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}
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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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}
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else {
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char *w = s - 1;
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*w = '\0';
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}
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*last = s;
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return tok;
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}
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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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#endif
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#endif /* this was only compiled if strtok_r wasn't present */
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