CMakeLua/Utilities/cmcurl/strtok.c

   1 /***************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * Copyright (C) 1998 - 2004, 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  * $Id: strtok.c,v 1.2 2007/03/15 19:22:13 andy Exp $
  22  ***************************************************************************/
  23
  24 #include "setup.h"
  25
  26 #ifndef HAVE_STRTOK_R
  27 #include <stddef.h>
  28 #include <string.h>
  29
  30 #include "strtok.h"
  31
  32 char *
  33 Curl_strtok_r(char *ptr, const char *sep, char **end)
  34 {
  35   if (!ptr)
  36     /* we got NULL input so then we get our last position instead */
  37     ptr = *end;
  38
  39   /* pass all letters that are including in the separator string */
  40   while (*ptr && strchr(sep, *ptr))
  41     ++ptr;
  42
  43   if (*ptr) {
  44     /* so this is where the next piece of string starts */
  45     char *start = ptr;
  46
  47     /* set the end pointer to the first byte after the start */
  48     *end = start + 1;
  49
  50     /* scan through the string to find where it ends, it ends on a
  51        null byte or a character that exists in the separator string */
  52     while (**end && !strchr(sep, **end))
  53       ++*end;
  54
  55     if (**end) {
  56       /* the end is not a null byte */
  57       **end = '\0';  /* zero terminate it! */
  58       ++*end;        /* advance the last pointer to beyond the null byte */
  59     }
  60
  61     return start; /* return the position where the string starts */
  62   }
  63
  64   /* we ended up on a null byte, there are no more strings to find! */
  65   return NULL;
  66 }
  67
  68 #endif /* this was only compiled if strtok_r wasn't present */