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Annotation of embedaddon/curl/lib/strtok.c, revision 1.1

1.1     ! misho       1: /***************************************************************************
        !             2:  *                                  _   _ ____  _
        !             3:  *  Project                     ___| | | |  _ \| |
        !             4:  *                             / __| | | | |_) | |
        !             5:  *                            | (__| |_| |  _ <| |___
        !             6:  *                             \___|\___/|_| \_\_____|
        !             7:  *
        !             8:  * Copyright (C) 1998 - 2019, 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 https://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: 
        !            30: char *
        !            31: Curl_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 */