1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, 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#include "curl_memrchr.h" 26 27#define _MPRINTF_REPLACE /* use our functions only */ 28#include <curl/mprintf.h> 29 30#include "curl_memory.h" 31/* The last #include file should be: */ 32#include "memdebug.h" 33 34#ifndef HAVE_MEMRCHR 35 36/* 37 * Curl_memrchr() 38 * 39 * Our memrchr() function clone for systems which lack this function. The 40 * memrchr() function is like the memchr() function, except that it searches 41 * backwards from the end of the n bytes pointed to by s instead of forward 42 * from the beginning. 43 */ 44 45void * 46Curl_memrchr(const void *s, int c, size_t n) 47{ 48 const unsigned char *p = s; 49 const unsigned char *q = s; 50 51 p += n - 1; 52 53 while(p >= q) { 54 if(*p == (unsigned char)c) 55 return (void *)p; 56 p--; 57 } 58 59 return NULL; 60} 61 62#endif /* HAVE_MEMRCHR */ 63