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 "curl_setup.h"
24
25#ifndef HAVE_STRTOK_R
26#include <stddef.h>
27
28#include "strtok.h"
29
30char *
31Curl_strtok_r(char *ptr, const char *sep, char **end)
32{
33  if(!ptr)
34    /* we got NULL input so then we get our last position instead */
35    ptr = *end;
36
37  /* pass all letters that are including in the separator string */
38  while(*ptr && strchr(sep, *ptr))
39    ++ptr;
40
41  if(*ptr) {
42    /* so this is where the next piece of string starts */
43    char *start = ptr;
44
45    /* set the end pointer to the first byte after the start */
46    *end = start + 1;
47
48    /* scan through the string to find where it ends, it ends on a
49       null byte or a character that exists in the separator string */
50    while(**end && !strchr(sep, **end))
51      ++*end;
52
53    if(**end) {
54      /* the end is not a null byte */
55      **end = '\0';  /* zero terminate it! */
56      ++*end;        /* advance the last pointer to beyond the null byte */
57    }
58
59    return start; /* return the position where the string starts */
60  }
61
62  /* we ended up on a null byte, there are no more strings to find! */
63  return NULL;
64}
65
66#endif /* this was only compiled if strtok_r wasn't present */
67