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 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 * Curl_strtok_r(char * ptr,const char * sep,char ** end)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 */ 67