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<h1>src/field_binary.cpp</h1><a href="field__binary_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// $Id: field_binary.cpp,v 1.27 2003/03/02 14:23:59 t1mpy Exp $</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// id3lib: a C++ library for creating and manipulating id3v1/v2 tags</span>
<a name="l00004"></a>00004 <span class="comment">// Copyright 1999, 2000 Scott Thomas Haug</span>
<a name="l00005"></a>00005
<a name="l00006"></a>00006 <span class="comment">// This library is free software; you can redistribute it and/or modify it</span>
<a name="l00007"></a>00007 <span class="comment">// under the terms of the GNU Library General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment">// the Free Software Foundation; either version 2 of the License, or (at your</span>
<a name="l00009"></a>00009 <span class="comment">// option) any later version.</span>
<a name="l00010"></a>00010 <span class="comment">//</span>
<a name="l00011"></a>00011 <span class="comment">// This library is distributed in the hope that it will be useful, but WITHOUT</span>
<a name="l00012"></a>00012 <span class="comment">// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or</span>
<a name="l00013"></a>00013 <span class="comment">// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public</span>
<a name="l00014"></a>00014 <span class="comment">// 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 Library General Public License</span>
<a name="l00017"></a>00017 <span class="comment">// along with this library; if not, write to the Free Software Foundation,</span>
<a name="l00018"></a>00018 <span class="comment">// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// The id3lib authors encourage improvements and optimisations to be sent to</span>
<a name="l00021"></a>00021 <span class="comment">// the id3lib coordinator. Please see the README file for details on where to</span>
<a name="l00022"></a>00022 <span class="comment">// send such submissions. See the AUTHORS file for a list of people who have</span>
<a name="l00023"></a>00023 <span class="comment">// contributed to id3lib. See the ChangeLog file for a list of changes to</span>
<a name="l00024"></a>00024 <span class="comment">// id3lib. These files are distributed with id3lib at</span>
<a name="l00025"></a>00025 <span class="comment">// http://download.sourceforge.net/id3lib/</span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include <stdio.h></span>
<a name="l00028"></a>00028 <span class="comment">//#include <string.h></span>
<a name="l00029"></a>00029 <span class="preprocessor">#include <memory.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="preprocessor">#include "<a class="code" href="field__impl_8h.html">field_impl.h</a>"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "<a class="code" href="reader_8h.html">reader.h</a>"</span>
<a name="l00033"></a>00033 <span class="preprocessor">#include "<a class="code" href="writer_8h.html">writer.h</a>"</span>
<a name="l00034"></a>00034 <span class="preprocessor">#include "<a class="code" href="io__helpers_8h.html">io_helpers.h</a>"</span>
<a name="l00035"></a>00035 <span class="preprocessor">#include "id3/utils.h"</span> <span class="comment">// has <config.h> "id3/id3lib_streams.h" "id3/globals.h" "id3/id3lib_strings.h"</span>
<a name="l00036"></a>00036
<a name="l00037"></a>00037 <span class="keyword">using namespace </span>dami;
<a name="l00038"></a>00038
<a name="l00039"></a><a class="code" href="class_i_d3___field_impl.html#a6ba3623febd59f599ba7b4f0df2f9904">00039</a> <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___field_impl.html#a6daa86b940122734d9bee75d7b57d6cf" title="Sets the value of the field to the specified integer.">ID3_FieldImpl::Set</a>(<span class="keyword">const</span> <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a>* data, <span class="keywordtype">size_t</span> len)
<a name="l00040"></a>00040 {
<a name="l00041"></a>00041 <span class="keywordtype">size_t</span> size = 0;
<a name="l00042"></a>00042 <span class="keywordflow">if</span> ((this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() == <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a>) && data && len)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 BString str(data, len);
<a name="l00045"></a>00045 size = <a class="code" href="io__strings_8h.html#ac6afabdc09a49a433ee19d8a9486056d">dami::min</a>(len, this-><a class="code" href="class_i_d3___field_impl.html#aea2f18de43016ff9c9b0a201f19abdae">SetBinary</a>(str));
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047 <span class="keywordflow">return</span> size;
<a name="l00048"></a>00048 }
<a name="l00049"></a>00049
<a name="l00055"></a>00055 <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___field_impl.html#aea2f18de43016ff9c9b0a201f19abdae">ID3_FieldImpl::SetBinary</a>(BString data) <span class="comment">//< data to assign to this field.</span>
<a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="keywordtype">size_t</span> size = 0;
<a name="l00058"></a>00058 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() == <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a>)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 this-><a class="code" href="class_i_d3___field_impl.html#a70599ecbe8fc8a4a55c348a15bcb3928" title="Clears any data and frees any memory associated with the field.">Clear</a>();
<a name="l00061"></a>00061 <span class="keywordtype">size_t</span> fixed = _fixed_size;
<a name="l00062"></a>00062 size = data.size();
<a name="l00063"></a>00063 <span class="keywordflow">if</span> (fixed == 0)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 _binary = data;
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067 <span class="keywordflow">else</span>
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 _binary.assign(data, 0, <a class="code" href="io__strings_8h.html#ac6afabdc09a49a433ee19d8a9486056d">dami::min</a>(size, fixed));
<a name="l00070"></a>00070 <span class="keywordflow">if</span> (size < fixed)
<a name="l00071"></a>00071 {
<a name="l00072"></a>00072 _binary.append(fixed - size, <span class="charliteral">'\0'</span>);
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075 size = _binary.size();
<a name="l00076"></a>00076 _changed = <span class="keyword">true</span>;
<a name="l00077"></a>00077 }
<a name="l00078"></a>00078 <span class="keywordflow">return</span> size;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a><a class="code" href="class_i_d3___field_impl.html#a34e2c463b5d3ba957b315eecce8c3002">00081</a> BString <a class="code" href="class_i_d3___field_impl.html#a34e2c463b5d3ba957b315eecce8c3002">ID3_FieldImpl::GetBinary</a>()<span class="keyword"> const</span>
<a name="l00082"></a>00082 <span class="keyword"></span>{
<a name="l00083"></a>00083 BString data;
<a name="l00084"></a>00084 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() == <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a>)
<a name="l00085"></a>00085 {
<a name="l00086"></a>00086 data = _binary;
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 <span class="keywordflow">return</span> data;
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091
<a name="l00092"></a><a class="code" href="class_i_d3___field_impl.html#a818191aad4980b504c141ac35d3e0f0a">00092</a> <span class="keyword">const</span> <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a>* <a class="code" href="class_i_d3___field_impl.html#a818191aad4980b504c141ac35d3e0f0a">ID3_FieldImpl::GetRawBinary</a>()<span class="keyword"> const</span>
<a name="l00093"></a>00093 <span class="keyword"></span>{
<a name="l00094"></a>00094 <span class="keyword">const</span> <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a>* data = <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;
<a name="l00095"></a>00095 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() == <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a>)
<a name="l00096"></a>00096 {
<a name="l00097"></a>00097 data = _binary.data();
<a name="l00098"></a>00098 }
<a name="l00099"></a>00099 <span class="keywordflow">return</span> data;
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101
<a name="l00102"></a>00102
<a name="l00113"></a><a class="code" href="class_i_d3___field_impl.html#a0f5cc37356a498c53ad0245dbcac8bb1">00113</a> <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___field_impl.html#ab0e321c609325a38f29bc279bfb7b2be" title="Returns the value of the integer field.">ID3_FieldImpl::Get</a>(<a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> *buffer, <span class="comment">//< Destination of retrieved string</span>
<a name="l00114"></a>00114 <span class="keywordtype">size_t</span> max_bytes <span class="comment">//< Max number of bytes to copy</span>
<a name="l00115"></a>00115 )<span class="keyword"> const</span>
<a name="l00116"></a>00116 <span class="keyword"></span>{
<a name="l00117"></a>00117 <span class="keywordtype">size_t</span> bytes = 0;
<a name="l00118"></a>00118 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() == <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a>)
<a name="l00119"></a>00119 {
<a name="l00120"></a>00120 bytes = <a class="code" href="io__strings_8h.html#ac6afabdc09a49a433ee19d8a9486056d">dami::min</a>(max_bytes, this-><a class="code" href="class_i_d3___field_impl.html#a42c87589e147efabe0e2eb30bdc6938b" title="Returns the size of a field.">Size</a>());
<a name="l00121"></a>00121 <span class="keywordflow">if</span> (<a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> != buffer && bytes > 0)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 ::memcpy(buffer, _binary.data(), bytes);
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 <span class="keywordflow">return</span> bytes;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128
<a name="l00129"></a>00129
<a name="l00136"></a><a class="code" href="class_i_d3___field_impl.html#afed9225149cd16de682c231fb31122dd">00136</a> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___field_impl.html#afed9225149cd16de682c231fb31122dd" title="Copies binary data from the file specified to the field.">ID3_FieldImpl::FromFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *info <span class="comment">//< Source filename</span>
<a name="l00137"></a>00137 )
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() != <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a> || <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> == info)
<a name="l00140"></a>00140 {
<a name="l00141"></a>00141 <span class="keywordflow">return</span>;
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a>00144 FILE* temp_file = ::fopen(info, <span class="stringliteral">"rb"</span>);
<a name="l00145"></a>00145 <span class="keywordflow">if</span> (temp_file != <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 ::fseek(temp_file, 0, SEEK_END);
<a name="l00148"></a>00148 <span class="keywordtype">size_t</span> fileSize = ::ftell(temp_file);
<a name="l00149"></a>00149 ::fseek(temp_file, 0, SEEK_SET);
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a>* buffer = <span class="keyword">new</span> <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a>[fileSize];
<a name="l00152"></a>00152 <span class="keywordflow">if</span> (buffer != <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00153"></a>00153 {
<a name="l00154"></a>00154 ::fread(buffer, 1, fileSize, temp_file);
<a name="l00155"></a>00155
<a name="l00156"></a>00156 this-><a class="code" href="class_i_d3___field_impl.html#a6daa86b940122734d9bee75d7b57d6cf" title="Sets the value of the field to the specified integer.">Set</a>(buffer, fileSize);
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keyword">delete</span> [] buffer;
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160
<a name="l00161"></a>00161 ::fclose(temp_file);
<a name="l00162"></a>00162 }
<a name="l00163"></a>00163 }
<a name="l00164"></a>00164
<a name="l00165"></a>00165
<a name="l00172"></a><a class="code" href="class_i_d3___field_impl.html#a1100cfc61ac54906dfb95891beb972d0">00172</a> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___field_impl.html#a1100cfc61ac54906dfb95891beb972d0" title="Copies binary data from the field to the specified file.">ID3_FieldImpl::ToFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *info <span class="comment">//< Destination filename</span>
<a name="l00173"></a>00173 )<span class="keyword"> const</span>
<a name="l00174"></a>00174 <span class="keyword"></span>{
<a name="l00175"></a>00175 <span class="keywordflow">if</span> (this-><a class="code" href="class_i_d3___field_impl.html#a52bf3b506788dbfb3adad6af6c413b90">GetType</a>() != <a class="code" href="globals_8h.html#adc0ffe8cf70623e6d4d17092b20bdd6baae04234361e579295a7bd84eeea8056e">ID3FTY_BINARY</a> || <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> == info)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 <span class="keywordflow">return</span>;
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordtype">size_t</span> size = this-><a class="code" href="class_i_d3___field_impl.html#a42c87589e147efabe0e2eb30bdc6938b" title="Returns the size of a field.">Size</a>();
<a name="l00181"></a>00181 <span class="keywordflow">if</span> (size > 0)
<a name="l00182"></a>00182 {
<a name="l00183"></a>00183 FILE* temp_file = ::fopen(info, <span class="stringliteral">"wb"</span>);
<a name="l00184"></a>00184 <span class="keywordflow">if</span> (temp_file != <a class="code" href="globals_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>)
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 ::fwrite(_binary.data(), 1, size, temp_file);
<a name="l00187"></a>00187 ::fclose(temp_file);
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190
<a name="l00191"></a>00191 return ;
<a name="l00192"></a>00192 }
<a name="l00193"></a>00193
<a name="l00194"></a>00194
<a name="l00195"></a><a class="code" href="class_i_d3___field_impl.html#a6bc1e1383511738c809a48f5e854b75a">00195</a> <span class="keywordtype">bool</span> <a class="code" href="class_i_d3___field_impl.html#a6bc1e1383511738c809a48f5e854b75a">ID3_FieldImpl::ParseBinary</a>(<a class="code" href="class_i_d3___reader.html">ID3_Reader</a>& reader)
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 <span class="comment">// copy the remaining bytes, unless we're fixed length, in which case copy</span>
<a name="l00198"></a>00198 <span class="comment">// the minimum of the remaining bytes vs. the fixed length</span>
<a name="l00199"></a>00199 _binary = <a class="code" href="namespacedami_1_1io.html#a1ffb5b2f29a7ced17e69418187d27c88">io::readAllBinary</a>(reader);
<a name="l00200"></a>00200 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00201"></a>00201 }
<a name="l00202"></a>00202
<a name="l00203"></a><a class="code" href="class_i_d3___field_impl.html#a3560fe3ac131dd8087bcbfd692855e81">00203</a> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___field_impl.html#a3560fe3ac131dd8087bcbfd692855e81">ID3_FieldImpl::RenderBinary</a>(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer)<span class="keyword"> const</span>
<a name="l00204"></a>00204 <span class="keyword"></span>{
<a name="l00205"></a>00205 writer.<a class="code" href="class_i_d3___writer.html#a287fd94f06b37fb638029b904e6f1d42" title="Write up to len characters into buf and advance the internal position accordingly...">writeChars</a>(this-><a class="code" href="class_i_d3___field_impl.html#a818191aad4980b504c141ac35d3e0f0a">GetRawBinary</a>(), this-><a class="code" href="class_i_d3___field_impl.html#a42c87589e147efabe0e2eb30bdc6938b" title="Returns the size of a field.">Size</a>());
<a name="l00206"></a>00206 }
<a name="l00207"></a>00207
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