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<a href="avstring_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright (c) 2007 Mans Rullgard</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of FFmpeg.</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * FFmpeg is free software; you can redistribute it and/or</span>
<a name="l00007"></a>00007 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00009"></a>00009 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> *</span>
<a name="l00011"></a>00011 <span class="comment"> * FFmpeg is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> *</span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00017"></a>00017 <span class="comment"> * License along with FFmpeg; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00019"></a>00019 <span class="comment"> */</span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#ifndef AVUTIL_AVSTRING_H</span>
<a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define AVUTIL_AVSTRING_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <stddef.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <stdint.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include "<a class="code" href="attributes_8h.html" title="Macro definitions for various function/variable attributes.">attributes.h</a>"</span>
<a name="l00027"></a>00027 <span class="comment"></span>
<a name="l00028"></a>00028 <span class="comment">/**</span>
<a name="l00029"></a>00029 <span class="comment"> * @addtogroup lavu_string</span>
<a name="l00030"></a>00030 <span class="comment"> * @{</span>
<a name="l00031"></a>00031 <span class="comment"> */</span>
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment">/**</span>
<a name="l00034"></a>00034 <span class="comment"> * Return non-zero if pfx is a prefix of str. If it is, *ptr is set to</span>
<a name="l00035"></a>00035 <span class="comment"> * the address of the first character in str after the prefix.</span>
<a name="l00036"></a>00036 <span class="comment"> *</span>
<a name="l00037"></a>00037 <span class="comment"> * @param str input string</span>
<a name="l00038"></a>00038 <span class="comment"> * @param pfx prefix to test</span>
<a name="l00039"></a>00039 <span class="comment"> * @param ptr updated if the prefix is matched inside str</span>
<a name="l00040"></a>00040 <span class="comment"> * @return non-zero if the prefix matches, zero otherwise</span>
<a name="l00041"></a>00041 <span class="comment"> */</span>
<a name="l00042"></a>00042 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga6135a12628e2b6a63c8d3d9b3a742b06" title="Return non-zero if pfx is a prefix of str.">av_strstart</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, <span class="keyword">const</span> <span class="keywordtype">char</span> *pfx, <span class="keyword">const</span> <span class="keywordtype">char</span> **ptr);
<a name="l00043"></a>00043 <span class="comment"></span>
<a name="l00044"></a>00044 <span class="comment">/**</span>
<a name="l00045"></a>00045 <span class="comment"> * Return non-zero if pfx is a prefix of str independent of case. If</span>
<a name="l00046"></a>00046 <span class="comment"> * it is, *ptr is set to the address of the first character in str</span>
<a name="l00047"></a>00047 <span class="comment"> * after the prefix.</span>
<a name="l00048"></a>00048 <span class="comment"> *</span>
<a name="l00049"></a>00049 <span class="comment"> * @param str input string</span>
<a name="l00050"></a>00050 <span class="comment"> * @param pfx prefix to test</span>
<a name="l00051"></a>00051 <span class="comment"> * @param ptr updated if the prefix is matched inside str</span>
<a name="l00052"></a>00052 <span class="comment"> * @return non-zero if the prefix matches, zero otherwise</span>
<a name="l00053"></a>00053 <span class="comment"> */</span>
<a name="l00054"></a>00054 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#gacd29ff1f7e62230a113c88fa10d3f5b9" title="Return non-zero if pfx is a prefix of str independent of case.">av_stristart</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, <span class="keyword">const</span> <span class="keywordtype">char</span> *pfx, <span class="keyword">const</span> <span class="keywordtype">char</span> **ptr);
<a name="l00055"></a>00055 <span class="comment"></span>
<a name="l00056"></a>00056 <span class="comment">/**</span>
<a name="l00057"></a>00057 <span class="comment"> * Locate the first case-independent occurrence in the string haystack</span>
<a name="l00058"></a>00058 <span class="comment"> * of the string needle. A zero-length string needle is considered to</span>
<a name="l00059"></a>00059 <span class="comment"> * match at the start of haystack.</span>
<a name="l00060"></a>00060 <span class="comment"> *</span>
<a name="l00061"></a>00061 <span class="comment"> * This function is a case-insensitive version of the standard strstr().</span>
<a name="l00062"></a>00062 <span class="comment"> *</span>
<a name="l00063"></a>00063 <span class="comment"> * @param haystack string to search in</span>
<a name="l00064"></a>00064 <span class="comment"> * @param needle string to search for</span>
<a name="l00065"></a>00065 <span class="comment"> * @return pointer to the located match within haystack</span>
<a name="l00066"></a>00066 <span class="comment"> * or a null pointer if no match</span>
<a name="l00067"></a>00067 <span class="comment"> */</span>
<a name="l00068"></a>00068 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga47e14424edfb96d3f6bf0fca96a76fe5" title="Locate the first case-independent occurrence in the string haystack of the string needle...">av_stristr</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *haystack, <span class="keyword">const</span> <span class="keywordtype">char</span> *needle);
<a name="l00069"></a>00069 <span class="comment"></span>
<a name="l00070"></a>00070 <span class="comment">/**</span>
<a name="l00071"></a>00071 <span class="comment"> * Locate the first occurrence of the string needle in the string haystack</span>
<a name="l00072"></a>00072 <span class="comment"> * where not more than hay_length characters are searched. A zero-length</span>
<a name="l00073"></a>00073 <span class="comment"> * string needle is considered to match at the start of haystack.</span>
<a name="l00074"></a>00074 <span class="comment"> *</span>
<a name="l00075"></a>00075 <span class="comment"> * This function is a length-limited version of the standard strstr().</span>
<a name="l00076"></a>00076 <span class="comment"> *</span>
<a name="l00077"></a>00077 <span class="comment"> * @param haystack string to search in</span>
<a name="l00078"></a>00078 <span class="comment"> * @param needle string to search for</span>
<a name="l00079"></a>00079 <span class="comment"> * @param hay_length length of string to search in</span>
<a name="l00080"></a>00080 <span class="comment"> * @return pointer to the located match within haystack</span>
<a name="l00081"></a>00081 <span class="comment"> * or a null pointer if no match</span>
<a name="l00082"></a>00082 <span class="comment"> */</span>
<a name="l00083"></a>00083 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga827486f333df7bc9a4e7f9bd212ba472" title="Locate the first occurrence of the string needle in the string haystack where not more than hay_lengt...">av_strnstr</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *haystack, <span class="keyword">const</span> <span class="keywordtype">char</span> *needle, <span class="keywordtype">size_t</span> hay_length);
<a name="l00084"></a>00084 <span class="comment"></span>
<a name="l00085"></a>00085 <span class="comment">/**</span>
<a name="l00086"></a>00086 <span class="comment"> * Copy the string src to dst, but no more than size - 1 bytes, and</span>
<a name="l00087"></a>00087 <span class="comment"> * null-terminate dst.</span>
<a name="l00088"></a>00088 <span class="comment"> *</span>
<a name="l00089"></a>00089 <span class="comment"> * This function is the same as BSD strlcpy().</span>
<a name="l00090"></a>00090 <span class="comment"> *</span>
<a name="l00091"></a>00091 <span class="comment"> * @param dst destination buffer</span>
<a name="l00092"></a>00092 <span class="comment"> * @param src source string</span>
<a name="l00093"></a>00093 <span class="comment"> * @param size size of destination buffer</span>
<a name="l00094"></a>00094 <span class="comment"> * @return the length of src</span>
<a name="l00095"></a>00095 <span class="comment"> *</span>
<a name="l00096"></a>00096 <span class="comment"> * @warning since the return value is the length of src, src absolutely</span>
<a name="l00097"></a>00097 <span class="comment"> * _must_ be a properly 0-terminated string, otherwise this will read beyond</span>
<a name="l00098"></a>00098 <span class="comment"> * the end of the buffer and possibly crash.</span>
<a name="l00099"></a>00099 <span class="comment"> */</span>
<a name="l00100"></a>00100 <span class="keywordtype">size_t</span> <a class="code" href="group__lavu__string.html#ga716447ae73b612bcf3a405b9b4608f6c" title="Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.">av_strlcpy</a>(<span class="keywordtype">char</span> *dst, <span class="keyword">const</span> <span class="keywordtype">char</span> *src, <span class="keywordtype">size_t</span> size);
<a name="l00101"></a>00101 <span class="comment"></span>
<a name="l00102"></a>00102 <span class="comment">/**</span>
<a name="l00103"></a>00103 <span class="comment"> * Append the string src to the string dst, but to a total length of</span>
<a name="l00104"></a>00104 <span class="comment"> * no more than size - 1 bytes, and null-terminate dst.</span>
<a name="l00105"></a>00105 <span class="comment"> *</span>
<a name="l00106"></a>00106 <span class="comment"> * This function is similar to BSD strlcat(), but differs when</span>
<a name="l00107"></a>00107 <span class="comment"> * size <= strlen(dst).</span>
<a name="l00108"></a>00108 <span class="comment"> *</span>
<a name="l00109"></a>00109 <span class="comment"> * @param dst destination buffer</span>
<a name="l00110"></a>00110 <span class="comment"> * @param src source string</span>
<a name="l00111"></a>00111 <span class="comment"> * @param size size of destination buffer</span>
<a name="l00112"></a>00112 <span class="comment"> * @return the total length of src and dst</span>
<a name="l00113"></a>00113 <span class="comment"> *</span>
<a name="l00114"></a>00114 <span class="comment"> * @warning since the return value use the length of src and dst, these</span>
<a name="l00115"></a>00115 <span class="comment"> * absolutely _must_ be a properly 0-terminated strings, otherwise this</span>
<a name="l00116"></a>00116 <span class="comment"> * will read beyond the end of the buffer and possibly crash.</span>
<a name="l00117"></a>00117 <span class="comment"> */</span>
<a name="l00118"></a>00118 <span class="keywordtype">size_t</span> <a class="code" href="group__lavu__string.html#ga193877ba459faf314c3d285b6082cf73" title="Append the string src to the string dst, but to a total length of no more than size - 1 bytes...">av_strlcat</a>(<span class="keywordtype">char</span> *dst, <span class="keyword">const</span> <span class="keywordtype">char</span> *src, <span class="keywordtype">size_t</span> size);
<a name="l00119"></a>00119 <span class="comment"></span>
<a name="l00120"></a>00120 <span class="comment">/**</span>
<a name="l00121"></a>00121 <span class="comment"> * Append output to a string, according to a format. Never write out of</span>
<a name="l00122"></a>00122 <span class="comment"> * the destination buffer, and always put a terminating 0 within</span>
<a name="l00123"></a>00123 <span class="comment"> * the buffer.</span>
<a name="l00124"></a>00124 <span class="comment"> * @param dst destination buffer (string to which the output is</span>
<a name="l00125"></a>00125 <span class="comment"> * appended)</span>
<a name="l00126"></a>00126 <span class="comment"> * @param size total size of the destination buffer</span>
<a name="l00127"></a>00127 <span class="comment"> * @param fmt printf-compatible format string, specifying how the</span>
<a name="l00128"></a>00128 <span class="comment"> * following parameters are used</span>
<a name="l00129"></a>00129 <span class="comment"> * @return the length of the string that would have been generated</span>
<a name="l00130"></a>00130 <span class="comment"> * if enough space had been available</span>
<a name="l00131"></a>00131 <span class="comment"> */</span>
<a name="l00132"></a>00132 <span class="keywordtype">size_t</span> <a class="code" href="group__lavu__string.html#gae264e2caf6ad1ca830ce3f2b49abdf50" title="Append output to a string, according to a format.">av_strlcatf</a>(<span class="keywordtype">char</span> *dst, <span class="keywordtype">size_t</span> size, <span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...) <a class="code" href="attributes_8h.html#a4b078d4b8e02c0f452ee1dcaa7d983d3">av_printf_format</a>(3, 4);
<a name="l00133"></a>00133 <span class="comment"></span>
<a name="l00134"></a>00134 <span class="comment">/**</span>
<a name="l00135"></a>00135 <span class="comment"> * Get the count of continuous non zero chars starting from the beginning.</span>
<a name="l00136"></a>00136 <span class="comment"> *</span>
<a name="l00137"></a>00137 <span class="comment"> * @param len maximum number of characters to check in the string, that</span>
<a name="l00138"></a>00138 <span class="comment"> * is the maximum value which is returned by the function</span>
<a name="l00139"></a>00139 <span class="comment"> */</span>
<a name="l00140"></a><a class="code" href="group__lavu__string.html#ga1cb2a3929575d28a415dc02b917ecc01">00140</a> static inline <span class="keywordtype">size_t</span> <a class="code" href="group__lavu__string.html#ga1cb2a3929575d28a415dc02b917ecc01" title="Get the count of continuous non zero chars starting from the beginning.">av_strnlen</a>(const <span class="keywordtype">char</span> *s, <span class="keywordtype">size_t</span> len)
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 <span class="keywordtype">size_t</span> i;
<a name="l00143"></a>00143 <span class="keywordflow">for</span> (i = 0; i < len && s[i]; i++)
<a name="l00144"></a>00144 ;
<a name="l00145"></a>00145 <span class="keywordflow">return</span> i;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147 <span class="comment"></span>
<a name="l00148"></a>00148 <span class="comment">/**</span>
<a name="l00149"></a>00149 <span class="comment"> * Print arguments following specified format into a large enough auto</span>
<a name="l00150"></a>00150 <span class="comment"> * allocated buffer. It is similar to GNU asprintf().</span>
<a name="l00151"></a>00151 <span class="comment"> * @param fmt printf-compatible format string, specifying how the</span>
<a name="l00152"></a>00152 <span class="comment"> * following parameters are used.</span>
<a name="l00153"></a>00153 <span class="comment"> * @return the allocated string</span>
<a name="l00154"></a>00154 <span class="comment"> * @note You have to free the string yourself with av_free().</span>
<a name="l00155"></a>00155 <span class="comment"> */</span>
<a name="l00156"></a>00156 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga0a8e3f4a2a3039c441bd0826e4727462" title="Print arguments following specified format into a large enough auto allocated buffer.">av_asprintf</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *fmt, ...) <a class="code" href="attributes_8h.html#a4b078d4b8e02c0f452ee1dcaa7d983d3">av_printf_format</a>(1, 2);
<a name="l00157"></a>00157 <span class="comment"></span>
<a name="l00158"></a>00158 <span class="comment">/**</span>
<a name="l00159"></a>00159 <span class="comment"> * Convert a number to a av_malloced string.</span>
<a name="l00160"></a>00160 <span class="comment"> */</span>
<a name="l00161"></a>00161 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga45d0395a448bc186baf081933ea816c9" title="Convert a number to a av_malloced string.">av_d2str</a>(<span class="keywordtype">double</span> d);
<a name="l00162"></a>00162 <span class="comment"></span>
<a name="l00163"></a>00163 <span class="comment">/**</span>
<a name="l00164"></a>00164 <span class="comment"> * Unescape the given string until a non escaped terminating char,</span>
<a name="l00165"></a>00165 <span class="comment"> * and return the token corresponding to the unescaped string.</span>
<a name="l00166"></a>00166 <span class="comment"> *</span>
<a name="l00167"></a>00167 <span class="comment"> * The normal \ and ' escaping is supported. Leading and trailing</span>
<a name="l00168"></a>00168 <span class="comment"> * whitespaces are removed, unless they are escaped with '\' or are</span>
<a name="l00169"></a>00169 <span class="comment"> * enclosed between ''.</span>
<a name="l00170"></a>00170 <span class="comment"> *</span>
<a name="l00171"></a>00171 <span class="comment"> * @param buf the buffer to parse, buf will be updated to point to the</span>
<a name="l00172"></a>00172 <span class="comment"> * terminating char</span>
<a name="l00173"></a>00173 <span class="comment"> * @param term a 0-terminated list of terminating chars</span>
<a name="l00174"></a>00174 <span class="comment"> * @return the malloced unescaped string, which must be av_freed by</span>
<a name="l00175"></a>00175 <span class="comment"> * the user, NULL in case of allocation failure</span>
<a name="l00176"></a>00176 <span class="comment"> */</span>
<a name="l00177"></a>00177 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga7b438169b430f6edf4f4451d867a9218" title="Unescape the given string until a non escaped terminating char, and return the token corresponding to...">av_get_token</a>(const <span class="keywordtype">char</span> **buf, const <span class="keywordtype">char</span> *term);
<a name="l00178"></a>00178 <span class="comment"></span>
<a name="l00179"></a>00179 <span class="comment">/**</span>
<a name="l00180"></a>00180 <span class="comment"> * Split the string into several tokens which can be accessed by</span>
<a name="l00181"></a>00181 <span class="comment"> * successive calls to av_strtok().</span>
<a name="l00182"></a>00182 <span class="comment"> *</span>
<a name="l00183"></a>00183 <span class="comment"> * A token is defined as a sequence of characters not belonging to the</span>
<a name="l00184"></a>00184 <span class="comment"> * set specified in delim.</span>
<a name="l00185"></a>00185 <span class="comment"> *</span>
<a name="l00186"></a>00186 <span class="comment"> * On the first call to av_strtok(), s should point to the string to</span>
<a name="l00187"></a>00187 <span class="comment"> * parse, and the value of saveptr is ignored. In subsequent calls, s</span>
<a name="l00188"></a>00188 <span class="comment"> * should be NULL, and saveptr should be unchanged since the previous</span>
<a name="l00189"></a>00189 <span class="comment"> * call.</span>
<a name="l00190"></a>00190 <span class="comment"> *</span>
<a name="l00191"></a>00191 <span class="comment"> * This function is similar to strtok_r() defined in POSIX.1.</span>
<a name="l00192"></a>00192 <span class="comment"> *</span>
<a name="l00193"></a>00193 <span class="comment"> * @param s the string to parse, may be NULL</span>
<a name="l00194"></a>00194 <span class="comment"> * @param delim 0-terminated list of token delimiters, must be non-NULL</span>
<a name="l00195"></a>00195 <span class="comment"> * @param saveptr user-provided pointer which points to stored</span>
<a name="l00196"></a>00196 <span class="comment"> * information necessary for av_strtok() to continue scanning the same</span>
<a name="l00197"></a>00197 <span class="comment"> * string. saveptr is updated to point to the next character after the</span>
<a name="l00198"></a>00198 <span class="comment"> * first delimiter found, or to NULL if the string was terminated</span>
<a name="l00199"></a>00199 <span class="comment"> * @return the found token, or NULL when no token is found</span>
<a name="l00200"></a>00200 <span class="comment"> */</span>
<a name="l00201"></a>00201 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga3d4270f4ed651c414e2850090b9b77c4" title="Split the string into several tokens which can be accessed by successive calls to av_strtok()...">av_strtok</a>(<span class="keywordtype">char</span> *s, const <span class="keywordtype">char</span> *delim, <span class="keywordtype">char</span> **saveptr);
<a name="l00202"></a>00202 <span class="comment"></span>
<a name="l00203"></a>00203 <span class="comment">/**</span>
<a name="l00204"></a>00204 <span class="comment"> * Locale-independent conversion of ASCII isdigit.</span>
<a name="l00205"></a>00205 <span class="comment"> */</span>
<a name="l00206"></a>00206 <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga5bb8470648a5ecf3f5f535fd14098318" title="Locale-independent conversion of ASCII isdigit.">av_isdigit</a>(<span class="keywordtype">int</span> c);
<a name="l00207"></a>00207 <span class="comment"></span>
<a name="l00208"></a>00208 <span class="comment">/**</span>
<a name="l00209"></a>00209 <span class="comment"> * Locale-independent conversion of ASCII isgraph.</span>
<a name="l00210"></a>00210 <span class="comment"> */</span>
<a name="l00211"></a>00211 <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga492982cc240ce4733e4bf298a416a6f5" title="Locale-independent conversion of ASCII isgraph.">av_isgraph</a>(<span class="keywordtype">int</span> c);
<a name="l00212"></a>00212 <span class="comment"></span>
<a name="l00213"></a>00213 <span class="comment">/**</span>
<a name="l00214"></a>00214 <span class="comment"> * Locale-independent conversion of ASCII isspace.</span>
<a name="l00215"></a>00215 <span class="comment"> */</span>
<a name="l00216"></a>00216 <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#gafd7d42d9ead2de53a1decfbea5b7656d" title="Locale-independent conversion of ASCII isspace.">av_isspace</a>(<span class="keywordtype">int</span> c);
<a name="l00217"></a>00217 <span class="comment"></span>
<a name="l00218"></a>00218 <span class="comment">/**</span>
<a name="l00219"></a>00219 <span class="comment"> * Locale-independent conversion of ASCII characters to uppercase.</span>
<a name="l00220"></a>00220 <span class="comment"> */</span>
<a name="l00221"></a><a class="code" href="group__lavu__string.html#ga9c20e01cbc94a7c9996a8ce93de046b0">00221</a> static inline <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga9c20e01cbc94a7c9996a8ce93de046b0" title="Locale-independent conversion of ASCII characters to uppercase.">av_toupper</a>(<span class="keywordtype">int</span> c)
<a name="l00222"></a>00222 {
<a name="l00223"></a>00223 <span class="keywordflow">if</span> (c >= <span class="charliteral">'a'</span> && c <= <span class="charliteral">'z'</span>)
<a name="l00224"></a>00224 c ^= 0x20;
<a name="l00225"></a>00225 <span class="keywordflow">return</span> c;
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227 <span class="comment"></span>
<a name="l00228"></a>00228 <span class="comment">/**</span>
<a name="l00229"></a>00229 <span class="comment"> * Locale-independent conversion of ASCII characters to lowercase.</span>
<a name="l00230"></a>00230 <span class="comment"> */</span>
<a name="l00231"></a><a class="code" href="group__lavu__string.html#ga4586526cc16bff30163dee592ed2897c">00231</a> <span class="keyword">static</span> <span class="keyword">inline</span> <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga4586526cc16bff30163dee592ed2897c" title="Locale-independent conversion of ASCII characters to lowercase.">av_tolower</a>(<span class="keywordtype">int</span> c)
<a name="l00232"></a>00232 {
<a name="l00233"></a>00233 <span class="keywordflow">if</span> (c >= <span class="charliteral">'A'</span> && c <= <span class="charliteral">'Z'</span>)
<a name="l00234"></a>00234 c ^= 0x20;
<a name="l00235"></a>00235 <span class="keywordflow">return</span> c;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 <span class="comment"></span>
<a name="l00238"></a>00238 <span class="comment">/**</span>
<a name="l00239"></a>00239 <span class="comment"> * Locale-independent conversion of ASCII isxdigit.</span>
<a name="l00240"></a>00240 <span class="comment"> */</span>
<a name="l00241"></a>00241 <a class="code" href="attributes_8h.html#a9eaead3cde73464fd66bab4cef9307ad">av_const</a> <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#gadd67ddbf2ea3fc08aa2c3fbde8274c53" title="Locale-independent conversion of ASCII isxdigit.">av_isxdigit</a>(<span class="keywordtype">int</span> c);
<a name="l00242"></a>00242 <span class="comment"></span>
<a name="l00243"></a>00243 <span class="comment">/**</span>
<a name="l00244"></a>00244 <span class="comment"> * Locale-independent case-insensitive compare.</span>
<a name="l00245"></a>00245 <span class="comment"> * @note This means only ASCII-range characters are case-insensitive</span>
<a name="l00246"></a>00246 <span class="comment"> */</span>
<a name="l00247"></a>00247 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga4c60b7d4ce023a6466bc033e31c5349c" title="Locale-independent case-insensitive compare.">av_strcasecmp</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *a, <span class="keyword">const</span> <span class="keywordtype">char</span> *b);
<a name="l00248"></a>00248 <span class="comment"></span>
<a name="l00249"></a>00249 <span class="comment">/**</span>
<a name="l00250"></a>00250 <span class="comment"> * Locale-independent case-insensitive compare.</span>
<a name="l00251"></a>00251 <span class="comment"> * @note This means only ASCII-range characters are case-insensitive</span>
<a name="l00252"></a>00252 <span class="comment"> */</span>
<a name="l00253"></a>00253 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#gaea8a7c8c2832c11e753fbfc0d1464970" title="Locale-independent case-insensitive compare.">av_strncasecmp</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *a, <span class="keyword">const</span> <span class="keywordtype">char</span> *b, <span class="keywordtype">size_t</span> n);
<a name="l00254"></a>00254
<a name="l00255"></a>00255 <span class="comment"></span>
<a name="l00256"></a>00256 <span class="comment">/**</span>
<a name="l00257"></a>00257 <span class="comment"> * Thread safe basename.</span>
<a name="l00258"></a>00258 <span class="comment"> * @param path the path, on DOS both \ and / are considered separators.</span>
<a name="l00259"></a>00259 <span class="comment"> * @return pointer to the basename substring.</span>
<a name="l00260"></a>00260 <span class="comment"> */</span>
<a name="l00261"></a>00261 <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga1fe5db82a1f7639434fc01bf83919096" title="Thread safe basename.">av_basename</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path);
<a name="l00262"></a>00262 <span class="comment"></span>
<a name="l00263"></a>00263 <span class="comment">/**</span>
<a name="l00264"></a>00264 <span class="comment"> * Thread safe dirname.</span>
<a name="l00265"></a>00265 <span class="comment"> * @param path the path, on DOS both \ and / are considered separators.</span>
<a name="l00266"></a>00266 <span class="comment"> * @return the path with the separator replaced by the string terminator or ".".</span>
<a name="l00267"></a>00267 <span class="comment"> * @note the function may change the input string.</span>
<a name="l00268"></a>00268 <span class="comment"> */</span>
<a name="l00269"></a>00269 <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#gac50facc4ebec4a3a4a06c058a71bc027" title="Thread safe dirname.">av_dirname</a>(<span class="keywordtype">char</span> *path);
<a name="l00270"></a>00270 <span class="comment"></span>
<a name="l00271"></a>00271 <span class="comment">/**</span>
<a name="l00272"></a>00272 <span class="comment"> * Match instances of a name in a comma-separated list of names.</span>
<a name="l00273"></a>00273 <span class="comment"> * @param name Name to look for.</span>
<a name="l00274"></a>00274 <span class="comment"> * @param names List of names.</span>
<a name="l00275"></a>00275 <span class="comment"> * @return 1 on match, 0 otherwise.</span>
<a name="l00276"></a>00276 <span class="comment"> */</span>
<a name="l00277"></a>00277 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga5883fa1071129810bccfad9b3e779371" title="Match instances of a name in a comma-separated list of names.">av_match_name</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *names);
<a name="l00278"></a>00278 <span class="comment"></span>
<a name="l00279"></a>00279 <span class="comment">/**</span>
<a name="l00280"></a>00280 <span class="comment"> * Append path component to the existing path.</span>
<a name="l00281"></a>00281 <span class="comment"> * Path separator '/' is placed between when needed.</span>
<a name="l00282"></a>00282 <span class="comment"> * Resulting string have to be freed with av_free().</span>
<a name="l00283"></a>00283 <span class="comment"> * @param path base path</span>
<a name="l00284"></a>00284 <span class="comment"> * @param component component to be appended</span>
<a name="l00285"></a>00285 <span class="comment"> * @return new path or NULL on error.</span>
<a name="l00286"></a>00286 <span class="comment"> */</span>
<a name="l00287"></a>00287 <span class="keywordtype">char</span> *<a class="code" href="group__lavu__string.html#ga7a948df0bd80a22f3fc4a267c4ef08c1" title="Append path component to the existing path.">av_append_path_component</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *path, <span class="keyword">const</span> <span class="keywordtype">char</span> *component);
<a name="l00288"></a>00288
<a name="l00289"></a><a class="code" href="group__lavu__string.html#gaef885958293f07153383f99db573ff5a">00289</a> <span class="keyword">enum</span> <a class="code" href="group__lavu__string.html#gaef885958293f07153383f99db573ff5a">AVEscapeMode</a> {
<a name="l00290"></a><a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa342d7bf60c9a7cb7a886f70f81ac5071">00290</a> <a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa342d7bf60c9a7cb7a886f70f81ac5071" title="Use auto-selected escaping mode.">AV_ESCAPE_MODE_AUTO</a>, <span class="comment">///< Use auto-selected escaping mode.</span>
<a name="l00291"></a><a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa8b2d26951a9e06d8f7c12977a204eaf9">00291</a> <span class="comment"></span> <a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa8b2d26951a9e06d8f7c12977a204eaf9" title="Use backslash escaping.">AV_ESCAPE_MODE_BACKSLASH</a>, <span class="comment">///< Use backslash escaping.</span>
<a name="l00292"></a><a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa84da6c323003df474c690ccf5d4e5d67">00292</a> <span class="comment"></span> <a class="code" href="group__lavu__string.html#ggaef885958293f07153383f99db573ff5aa84da6c323003df474c690ccf5d4e5d67" title="Use single-quote escaping.">AV_ESCAPE_MODE_QUOTE</a>, <span class="comment">///< Use single-quote escaping.</span>
<a name="l00293"></a>00293 <span class="comment"></span>};
<a name="l00294"></a>00294 <span class="comment"></span>
<a name="l00295"></a>00295 <span class="comment">/**</span>
<a name="l00296"></a>00296 <span class="comment"> * Consider spaces special and escape them even in the middle of the</span>
<a name="l00297"></a>00297 <span class="comment"> * string.</span>
<a name="l00298"></a>00298 <span class="comment"> *</span>
<a name="l00299"></a>00299 <span class="comment"> * This is equivalent to adding the whitespace characters to the special</span>
<a name="l00300"></a>00300 <span class="comment"> * characters lists, except it is guaranteed to use the exact same list</span>
<a name="l00301"></a>00301 <span class="comment"> * of whitespace characters as the rest of libavutil.</span>
<a name="l00302"></a>00302 <span class="comment"> */</span>
<a name="l00303"></a><a class="code" href="group__lavu__string.html#ga84ac09ffcff9c3c42c35db1f8477cc17">00303</a> <span class="preprocessor">#define AV_ESCAPE_FLAG_WHITESPACE 0x01</span>
<a name="l00304"></a>00304 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00305"></a>00305 <span class="comment">/**</span>
<a name="l00306"></a>00306 <span class="comment"> * Escape only specified special characters.</span>
<a name="l00307"></a>00307 <span class="comment"> * Without this flag, escape also any characters that may be considered</span>
<a name="l00308"></a>00308 <span class="comment"> * special by av_get_token(), such as the single quote.</span>
<a name="l00309"></a>00309 <span class="comment"> */</span>
<a name="l00310"></a><a class="code" href="group__lavu__string.html#ga24963cc06a1b89194ba8a2fe013a7d7d">00310</a> <span class="preprocessor">#define AV_ESCAPE_FLAG_STRICT 0x02</span>
<a name="l00311"></a>00311 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00312"></a>00312 <span class="comment">/**</span>
<a name="l00313"></a>00313 <span class="comment"> * Escape string in src, and put the escaped string in an allocated</span>
<a name="l00314"></a>00314 <span class="comment"> * string in *dst, which must be freed with av_free().</span>
<a name="l00315"></a>00315 <span class="comment"> *</span>
<a name="l00316"></a>00316 <span class="comment"> * @param dst pointer where an allocated string is put</span>
<a name="l00317"></a>00317 <span class="comment"> * @param src string to escape, must be non-NULL</span>
<a name="l00318"></a>00318 <span class="comment"> * @param special_chars string containing the special characters which</span>
<a name="l00319"></a>00319 <span class="comment"> * need to be escaped, can be NULL</span>
<a name="l00320"></a>00320 <span class="comment"> * @param mode escape mode to employ, see AV_ESCAPE_MODE_* macros.</span>
<a name="l00321"></a>00321 <span class="comment"> * Any unknown value for mode will be considered equivalent to</span>
<a name="l00322"></a>00322 <span class="comment"> * AV_ESCAPE_MODE_BACKSLASH, but this behaviour can change without</span>
<a name="l00323"></a>00323 <span class="comment"> * notice.</span>
<a name="l00324"></a>00324 <span class="comment"> * @param flags flags which control how to escape, see AV_ESCAPE_FLAG_ macros</span>
<a name="l00325"></a>00325 <span class="comment"> * @return the length of the allocated string, or a negative error code in case of error</span>
<a name="l00326"></a>00326 <span class="comment"> * @see av_bprint_escape()</span>
<a name="l00327"></a>00327 <span class="comment"> */</span>
<a name="l00328"></a>00328 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga3781b9212ada2863274cf1def2743d25" title="Escape string in src, and put the escaped string in an allocated string in *dst, which must be freed ...">av_escape</a>(<span class="keywordtype">char</span> **dst, <span class="keyword">const</span> <span class="keywordtype">char</span> *src, <span class="keyword">const</span> <span class="keywordtype">char</span> *special_chars,
<a name="l00329"></a>00329 <span class="keyword">enum</span> <a class="code" href="group__lavu__string.html#gaef885958293f07153383f99db573ff5a">AVEscapeMode</a> mode, <span class="keywordtype">int</span> flags);
<a name="l00330"></a>00330
<a name="l00331"></a><a class="code" href="group__lavu__string.html#ga61b431e73b72949c839788914a599207">00331</a> <span class="preprocessor">#define AV_UTF8_FLAG_ACCEPT_INVALID_BIG_CODES 1 ///< accept codepoints over 0x10FFFF</span>
<a name="l00332"></a><a class="code" href="group__lavu__string.html#gadc5f344d3eafe34e9c3169b1178e137b">00332</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_UTF8_FLAG_ACCEPT_NON_CHARACTERS 2 ///< accept non-characters - 0xFFFE and 0xFFFF</span>
<a name="l00333"></a><a class="code" href="group__lavu__string.html#ga39a93e11907ca4b116d8d179cbdb570d">00333</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_UTF8_FLAG_ACCEPT_SURROGATES 4 ///< accept UTF-16 surrogates codes</span>
<a name="l00334"></a><a class="code" href="group__lavu__string.html#gaecaf936b2eb2f3c410869e235650229b">00334</a> <span class="preprocessor"></span><span class="preprocessor">#define AV_UTF8_FLAG_EXCLUDE_XML_INVALID_CONTROL_CODES 8 ///< exclude control codes not accepted by XML</span>
<a name="l00335"></a>00335 <span class="preprocessor"></span>
<a name="l00336"></a><a class="code" href="group__lavu__string.html#ga4825349f5346880c6ac32b0847e9a73a">00336</a> <span class="preprocessor">#define AV_UTF8_FLAG_ACCEPT_ALL \</span>
<a name="l00337"></a>00337 <span class="preprocessor"> AV_UTF8_FLAG_ACCEPT_INVALID_BIG_CODES|AV_UTF8_FLAG_ACCEPT_NON_CHARACTERS|AV_UTF8_FLAG_ACCEPT_SURROGATES</span>
<a name="l00338"></a>00338 <span class="preprocessor"></span><span class="comment"></span>
<a name="l00339"></a>00339 <span class="comment">/**</span>
<a name="l00340"></a>00340 <span class="comment"> * Read and decode a single UTF-8 code point (character) from the</span>
<a name="l00341"></a>00341 <span class="comment"> * buffer in *buf, and update *buf to point to the next byte to</span>
<a name="l00342"></a>00342 <span class="comment"> * decode.</span>
<a name="l00343"></a>00343 <span class="comment"> *</span>
<a name="l00344"></a>00344 <span class="comment"> * In case of an invalid byte sequence, the pointer will be updated to</span>
<a name="l00345"></a>00345 <span class="comment"> * the next byte after the invalid sequence and the function will</span>
<a name="l00346"></a>00346 <span class="comment"> * return an error code.</span>
<a name="l00347"></a>00347 <span class="comment"> *</span>
<a name="l00348"></a>00348 <span class="comment"> * Depending on the specified flags, the function will also fail in</span>
<a name="l00349"></a>00349 <span class="comment"> * case the decoded code point does not belong to a valid range.</span>
<a name="l00350"></a>00350 <span class="comment"> *</span>
<a name="l00351"></a>00351 <span class="comment"> * @note For speed-relevant code a carefully implemented use of</span>
<a name="l00352"></a>00352 <span class="comment"> * GET_UTF8() may be preferred.</span>
<a name="l00353"></a>00353 <span class="comment"> *</span>
<a name="l00354"></a>00354 <span class="comment"> * @param codep pointer used to return the parsed code in case of success.</span>
<a name="l00355"></a>00355 <span class="comment"> * The value in *codep is set even in case the range check fails.</span>
<a name="l00356"></a>00356 <span class="comment"> * @param bufp pointer to the address the first byte of the sequence</span>
<a name="l00357"></a>00357 <span class="comment"> * to decode, updated by the function to point to the</span>
<a name="l00358"></a>00358 <span class="comment"> * byte next after the decoded sequence</span>
<a name="l00359"></a>00359 <span class="comment"> * @param buf_end pointer to the end of the buffer, points to the next</span>
<a name="l00360"></a>00360 <span class="comment"> * byte past the last in the buffer. This is used to</span>
<a name="l00361"></a>00361 <span class="comment"> * avoid buffer overreads (in case of an unfinished</span>
<a name="l00362"></a>00362 <span class="comment"> * UTF-8 sequence towards the end of the buffer).</span>
<a name="l00363"></a>00363 <span class="comment"> * @param flags a collection of AV_UTF8_FLAG_* flags</span>
<a name="l00364"></a>00364 <span class="comment"> * @return >= 0 in case a sequence was successfully read, a negative</span>
<a name="l00365"></a>00365 <span class="comment"> * value in case of invalid sequence</span>
<a name="l00366"></a>00366 <span class="comment"> */</span>
<a name="l00367"></a>00367 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga4b48c16f6614091a8ea6b3e3836b541a" title="Read and decode a single UTF-8 code point (character) from the buffer in *buf, and update *buf to poi...">av_utf8_decode</a>(int32_t *codep, <span class="keyword">const</span> uint8_t **bufp, <span class="keyword">const</span> uint8_t *buf_end,
<a name="l00368"></a>00368 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> flags);
<a name="l00369"></a>00369 <span class="comment"></span>
<a name="l00370"></a>00370 <span class="comment">/**</span>
<a name="l00371"></a>00371 <span class="comment"> * Check if a name is in a list.</span>
<a name="l00372"></a>00372 <span class="comment"> * @returns 0 if not found, or the 1 based index where it has been found in the</span>
<a name="l00373"></a>00373 <span class="comment"> * list.</span>
<a name="l00374"></a>00374 <span class="comment"> */</span>
<a name="l00375"></a>00375 <span class="keywordtype">int</span> <a class="code" href="group__lavu__string.html#ga9a6eb11f2b4053d6bba95d8da156da2d" title="Check if a name is in a list.">av_match_list</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *name, <span class="keyword">const</span> <span class="keywordtype">char</span> *list, <span class="keywordtype">char</span> separator);
<a name="l00376"></a>00376 <span class="comment"></span>
<a name="l00377"></a>00377 <span class="comment">/**</span>
<a name="l00378"></a>00378 <span class="comment"> * @}</span>
<a name="l00379"></a>00379 <span class="comment"> */</span>
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="preprocessor">#endif </span><span class="comment">/* AVUTIL_AVSTRING_H */</span>
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