63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curl_setup.h"
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#include <curl/curl.h>
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#include "curl_memrchr.h"
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#include "curl_memory.h"
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/* The last #include file should be: */
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#include "memdebug.h"
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#ifndef HAVE_MEMRCHR
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/*
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* Curl_memrchr()
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*
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* Our memrchr() function clone for systems which lack this function. The
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* memrchr() function is like the memchr() function, except that it searches
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* backwards from the end of the n bytes pointed to by s instead of forward
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* from the beginning.
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*/
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void *
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Curl_memrchr(const void *s, int c, size_t n)
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{
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if(n > 0) {
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const unsigned char *p = s;
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const unsigned char *q = s;
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p += n - 1;
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while(p >= q) {
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if(*p == (unsigned char)c)
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return (void *)p;
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p--;
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}
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}
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return NULL;
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}
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#endif /* HAVE_MEMRCHR */
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