annotate mupdf-source/thirdparty/curl/lib/curl_memrchr.c @ 46:7ee69f120f19 default tip

>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
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1 /***************************************************************************
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2 * _ _ ____ _
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3 * Project ___| | | | _ \| |
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4 * / __| | | | |_) | |
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5 * | (__| |_| | _ <| |___
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6 * \___|\___/|_| \_\_____|
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7 *
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8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
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9 *
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10 * This software is licensed as described in the file COPYING, which
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11 * you should have received as part of this distribution. The terms
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12 * are also available at https://curl.haxx.se/docs/copyright.html.
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13 *
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14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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15 * copies of the Software, and permit persons to whom the Software is
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16 * furnished to do so, under the terms of the COPYING file.
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17 *
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18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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19 * KIND, either express or implied.
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20 *
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21 ***************************************************************************/
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23 #include "curl_setup.h"
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25 #include <curl/curl.h>
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27 #include "curl_memrchr.h"
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28 #include "curl_memory.h"
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30 /* The last #include file should be: */
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31 #include "memdebug.h"
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33 #ifndef HAVE_MEMRCHR
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35 /*
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36 * Curl_memrchr()
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37 *
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38 * Our memrchr() function clone for systems which lack this function. The
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39 * memrchr() function is like the memchr() function, except that it searches
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40 * backwards from the end of the n bytes pointed to by s instead of forward
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41 * from the beginning.
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42 */
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44 void *
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45 Curl_memrchr(const void *s, int c, size_t n)
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46 {
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47 if(n > 0) {
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48 const unsigned char *p = s;
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49 const unsigned char *q = s;
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51 p += n - 1;
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53 while(p >= q) {
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54 if(*p == (unsigned char)c)
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55 return (void *)p;
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56 p--;
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57 }
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58 }
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59 return NULL;
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60 }
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62 #endif /* HAVE_MEMRCHR */