1/***************************************************************************
2 *                                  _   _ ____  _
3 *  Project                     ___| | | |  _ \| |
4 *                             / __| | | | |_) | |
5 *                            | (__| |_| |  _ <| |___
6 *                             \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2007, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23#include "setup.h"
24
25#ifndef HAVE_STRTOK_R
26#include <stddef.h>
27#include <string.h>
28
29#include "strtok.h"
30
31char *
32Curl_strtok_r(char *ptr, const char *sep, char **end)
33{
34  if(!ptr)
35    /* we got NULL input so then we get our last position instead */
36    ptr = *end;
37
38  /* pass all letters that are including in the separator string */
39  while(*ptr && strchr(sep, *ptr))
40    ++ptr;
41
42  if(*ptr) {
43    /* so this is where the next piece of string starts */
44    char *start = ptr;
45
46    /* set the end pointer to the first byte after the start */
47    *end = start + 1;
48
49    /* scan through the string to find where it ends, it ends on a
50       null byte or a character that exists in the separator string */
51    while(**end && !strchr(sep, **end))
52      ++*end;
53
54    if(**end) {
55      /* the end is not a null byte */
56      **end = '\0';  /* zero terminate it! */
57      ++*end;        /* advance the last pointer to beyond the null byte */
58    }
59
60    return start; /* return the position where the string starts */
61  }
62
63  /* we ended up on a null byte, there are no more strings to find! */
64  return NULL;
65}
66
67#endif /* this was only compiled if strtok_r wasn't present */
68