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<hr><h1>src/tag_find.cpp</h1><a href="tag__find_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="comment">// $Id: tag_find.cpp,v 1.26 2000/10/29 01:37:29 eldamitri Exp $</font>
00002
00003 <font class="comment">// id3lib: a C++ library for creating and manipulating id3v1/v2 tags</font>
00004 <font class="comment">// Copyright 1999, 2000 Scott Thomas Haug</font>
00005
00006 <font class="comment">// This library is free software; you can redistribute it and/or modify it</font>
00007 <font class="comment">// under the terms of the GNU Library General Public License as published by</font>
00008 <font class="comment">// the Free Software Foundation; either version 2 of the License, or (at your</font>
00009 <font class="comment">// option) any later version.</font>
00010 <font class="comment">//</font>
00011 <font class="comment">// This library is distributed in the hope that it will be useful, but WITHOUT</font>
00012 <font class="comment">// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or</font>
00013 <font class="comment">// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public</font>
00014 <font class="comment">// License for more details.</font>
00015 <font class="comment">//</font>
00016 <font class="comment">// You should have received a copy of the GNU Library General Public License</font>
00017 <font class="comment">// along with this library; if not, write to the Free Software Foundation,</font>
00018 <font class="comment">// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</font>
00019
00020 <font class="comment">// The id3lib authors encourage improvements and optimisations to be sent to</font>
00021 <font class="comment">// the id3lib coordinator. Please see the README file for details on where to</font>
00022 <font class="comment">// send such submissions. See the AUTHORS file for a list of people who have</font>
00023 <font class="comment">// contributed to id3lib. See the ChangeLog file for a list of changes to</font>
00024 <font class="comment">// id3lib. These files are distributed with id3lib at</font>
00025 <font class="comment">// http://download.sourceforge.net/id3lib/</font>
00026
00027 <font class="preprocessor">#if defined HAVE_CONFIG_H</font>
00028 <font class="preprocessor"></font><font class="preprocessor">#include <config.h></font>
00029 <font class="preprocessor">#endif</font>
00030 <font class="preprocessor"></font>
00031
00032
00033 <font class="preprocessor">#include <string.h></font>
00034
00035 <font class="preprocessor">#include "<a class="code" href="tag__impl_8h.html">tag_impl.h</a>"</font>
00036 <font class="preprocessor">#include "<a class="code" href="field_8h.html">field.h</a>"</font>
00037 <font class="preprocessor">#include "utils.h"</font>
00038
00039 <font class="keyword">using</font> <font class="keyword">namespace </font>dami;
00040
<a name="l00041"></a><a class="code" href="class_i_d3___tag_impl.html#b0">00041</a> <a class="code" href="class_i_d3___tag_impl.html#s1">ID3_TagImpl::const_iterator</a> <a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<font class="keyword">const</font> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame)<font class="keyword"> const</font>
00042 <font class="keyword"></font>{
00043 <a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a> cur = _frames.begin();
00044
00045 <font class="keywordflow">for</font> (; cur != _frames.end(); ++cur)
00046 {
00047 <font class="keywordflow">if</font> (*cur == frame)
00048 {
00049 <font class="keywordflow">break</font>;
00050 }
00051 }
00052
00053 <font class="keywordflow">return</font> cur;
00054 }
00055
<a name="l00056"></a><a class="code" href="class_i_d3___tag_impl.html#b1">00056</a> <a class="code" href="class_i_d3___tag_impl.html#s0">ID3_TagImpl::iterator</a> <a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<font class="keyword">const</font> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame)
00057 {
00058 <a class="code" href="class_i_d3___tag_impl.html#s0">iterator</a> cur = _frames.begin();
00059
00060 <font class="keywordflow">for</font> (; cur != _frames.end(); ++cur)
00061 {
00062 <font class="keywordflow">if</font> (*cur == frame)
00063 {
00064 <font class="keywordflow">break</font>;
00065 }
00066 }
00067
00068 <font class="keywordflow">return</font> cur;
00069 }
00070
<a name="l00071"></a><a class="code" href="class_i_d3___tag_impl.html#a25">00071</a> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *<a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id)<font class="keyword"> const</font>
00072 <font class="keyword"></font>{
00073 <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame = <a class="code" href="globals_8h.html#a24">NULL</a>;
00074
00075 <font class="comment">// reset the cursor if it isn't set</font>
00076 <font class="keywordflow">if</font> (_frames.end() == _cursor)
00077 {
00078 _cursor = _frames.begin();
00079 }
00080
00081
00082 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> iCount = 0; iCount < 2 && frame == NULL; iCount++)
00083 {
00084 <font class="comment">// We want to cycle through the list to find the matching frame. We</font>
00085 <font class="comment">// should begin from the cursor, search each successive frame, wrapping</font>
00086 <font class="comment">// if necessary. The enclosing loop and the assignment statments below</font>
00087 <font class="comment">// ensure that we first begin at the cursor and search to the end of the</font>
00088 <font class="comment">// list and, if unsuccessful, start from the beginning of the list and</font>
00089 <font class="comment">// search to the cursor.</font>
00090 <a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a>
00091 <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a> = (0 == iCount ? _cursor : _frames.begin()),
00092 <a class="code" href="class_i_d3___tag_impl.html#a35">end</a> = (0 == iCount ? _frames.end() : _cursor);
00093 <font class="comment">// search from the cursor to the end</font>
00094 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a> cur = <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a>; cur != <a class="code" href="class_i_d3___tag_impl.html#a35">end</a>; ++cur)
00095 {
00096 <font class="keywordflow">if</font> ((*cur != NULL) && ((*cur)->GetID() == id))
00097 {
00098 <font class="comment">// We've found a valid frame. Set the cursor to be the next element</font>
00099 frame = *cur;
00100 _cursor = ++cur;
00101 <font class="keywordflow">break</font>;
00102 }
00103 }
00104 }
00105
00106 <font class="keywordflow">return</font> frame;
00107 }
00108
<a name="l00109"></a><a class="code" href="class_i_d3___tag_impl.html#a27">00109</a> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *<a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id, <a class="code" href="globals_8h.html#a218">ID3_FieldID</a> fldID, String data)<font class="keyword"> const</font>
00110 <font class="keyword"></font>{
00111 <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame = <a class="code" href="globals_8h.html#a24">NULL</a>;
00112 ID3D_NOTICE( <font class="stringliteral">"Find: looking for comment with data = "</font> << data.c_str() );
00113
00114 <font class="comment">// reset the cursor if it isn't set</font>
00115 <font class="keywordflow">if</font> (_frames.end() == _cursor)
00116 {
00117 _cursor = _frames.begin();
00118 ID3D_NOTICE( <font class="stringliteral">"Find: resetting cursor"</font> );
00119 }
00120
00121 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> iCount = 0; iCount < 2 && frame == NULL; iCount++)
00122 {
00123 ID3D_NOTICE( <font class="stringliteral">"Find: iCount = "</font> << iCount );
00124 <font class="comment">// We want to cycle through the list to find the matching frame. We</font>
00125 <font class="comment">// should begin from the cursor, search each successive frame, wrapping</font>
00126 <font class="comment">// if necessary. The enclosing loop and the assignment statments below</font>
00127 <font class="comment">// ensure that we first begin at the cursor and search to the end of the</font>
00128 <font class="comment">// list and, if unsuccessful, start from the beginning of the list and</font>
00129 <font class="comment">// search to the cursor.</font>
00130 <a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a>
00131 <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a> = (0 == iCount ? _cursor : _frames.begin()),
00132 <a class="code" href="class_i_d3___tag_impl.html#a35">end</a> = (0 == iCount ? _frames.end() : _cursor);
00133 <font class="comment">// search from the cursor to the end</font>
00134 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a> cur = <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a>; cur != <a class="code" href="class_i_d3___tag_impl.html#a35">end</a>; ++cur)
00135 {
00136 ID3D_NOTICE( <font class="stringliteral">"Find: frame = 0x"</font> << hex << (<a class="code" href="sized__types_8h.html#a4">uint32</a>) *cur << dec );
00137 <font class="keywordflow">if</font> ((*cur != NULL) && ((*cur)->GetID() == id) &&
00138 (*cur)->Contains(fldID))
00139 {
00140 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* fld = (*cur)->GetField(fldID);
00141 <font class="keywordflow">if</font> (NULL == fld)
00142 {
00143 <font class="keywordflow">continue</font>;
00144 ID3D_NOTICE( <font class="stringliteral">"Find: didn't have the right field"</font> );
00145 }
00146
00147 String text(fld-><a class="code" href="class_i_d3___field.html#a11">GetRawText</a>(), fld-><a class="code" href="class_i_d3___field.html#a1">Size</a>());
00148 ID3D_NOTICE( <font class="stringliteral">"Find: text = "</font> << text.c_str() );
00149
00150 <font class="keywordflow">if</font> (text == data)
00151 {
00152 <font class="comment">// We've found a valid frame. Set cursor to be the next element</font>
00153 frame = *cur;
00154 _cursor = ++cur;
00155 <font class="keywordflow">break</font>;
00156 }
00157 }
00158 }
00159 }
00160
00161 <font class="keywordflow">return</font> frame;
00162 }
00163
<a name="l00164"></a><a class="code" href="class_i_d3___tag_impl.html#a28">00164</a> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *<a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id, <a class="code" href="globals_8h.html#a218">ID3_FieldID</a> fldID, WString data)<font class="keyword"> const</font>
00165 <font class="keyword"></font>{
00166 <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame = <a class="code" href="globals_8h.html#a24">NULL</a>;
00167
00168 <font class="comment">// reset the cursor if it isn't set</font>
00169 <font class="keywordflow">if</font> (_frames.end() == _cursor)
00170 {
00171 _cursor = _frames.begin();
00172 }
00173
00174 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> iCount = 0; iCount < 2 && frame == NULL; iCount++)
00175 {
00176 <font class="comment">// We want to cycle through the list to find the matching frame. We</font>
00177 <font class="comment">// should begin from the cursor, search each successive frame, wrapping</font>
00178 <font class="comment">// if necessary. The enclosing loop and the assignment statments below</font>
00179 <font class="comment">// ensure that we first begin at the cursor and search to the end of the</font>
00180 <font class="comment">// list and, if unsuccessful, start from the beginning of the list and</font>
00181 <font class="comment">// search to the cursor.</font>
00182 <a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a>
00183 <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a> = (0 == iCount ? _cursor : _frames.begin()),
00184 <a class="code" href="class_i_d3___tag_impl.html#a35">end</a> = (0 == iCount ? _frames.end() : _cursor);
00185 <font class="comment">// search from the cursor to the end</font>
00186 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a> cur = <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a>; cur != <a class="code" href="class_i_d3___tag_impl.html#a35">end</a>; ++cur)
00187 {
00188 <font class="keywordflow">if</font> ((*cur != NULL) && ((*cur)->GetID() == id) &&
00189 (*cur)->Contains(fldID))
00190 {
00191 <a class="code" href="class_i_d3___field.html">ID3_Field</a>* fld = (*cur)->GetField(fldID);
00192 <font class="keywordflow">if</font> (NULL == fld)
00193 {
00194 <font class="keywordflow">continue</font>;
00195 }
00196 WString text = toWString(fld-><a class="code" href="class_i_d3___field.html#a18">GetRawUnicodeText</a>(), fld-><a class="code" href="class_i_d3___field.html#a1">Size</a>());
00197
00198 <font class="keywordflow">if</font> (text == data)
00199 {
00200 <font class="comment">// We've found a valid frame. Set cursor to be the next element</font>
00201 frame = *cur;
00202 _cursor = ++cur;
00203 <font class="keywordflow">break</font>;
00204 }
00205 }
00206 }
00207 }
00208
00209 <font class="keywordflow">return</font> frame;
00210 }
00211
<a name="l00212"></a><a class="code" href="class_i_d3___tag_impl.html#a26">00212</a> <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *<a class="code" href="class_i_d3___tag_impl.html#a25">ID3_TagImpl::Find</a>(<a class="code" href="globals_8h.html#a219">ID3_FrameID</a> id, <a class="code" href="globals_8h.html#a218">ID3_FieldID</a> fldID, <a class="code" href="sized__types_8h.html#a4">uint32</a> data)<font class="keyword"> const</font>
00213 <font class="keyword"></font>{
00214 <a class="code" href="class_i_d3___frame.html">ID3_Frame</a> *frame = <a class="code" href="globals_8h.html#a24">NULL</a>;
00215
00216 <font class="comment">// reset the cursor if it isn't set</font>
00217 <font class="keywordflow">if</font> (_frames.end() == _cursor)
00218 {
00219 _cursor = _frames.begin();
00220 }
00221
00222 <font class="keywordflow">for</font> (<font class="keywordtype">int</font> iCount = 0; iCount < 2 && frame == NULL; iCount++)
00223 {
00224 <font class="comment">// We want to cycle through the list to find the matching frame. We</font>
00225 <font class="comment">// should begin from the cursor, search each successive frame, wrapping</font>
00226 <font class="comment">// if necessary. The enclosing loop and the assignment statments below</font>
00227 <font class="comment">// ensure that we first begin at the cursor and search to the end of the</font>
00228 <font class="comment">// list and, if unsuccessful, start from the beginning of the list and</font>
00229 <font class="comment">// search to the cursor.</font>
00230 <a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a>
00231 <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a> = (0 == iCount ? _cursor : _frames.begin()),
00232 <a class="code" href="class_i_d3___tag_impl.html#a35">end</a> = (0 == iCount ? _frames.end() : _cursor);
00233 <font class="comment">// search from the cursor to the end</font>
00234 <font class="keywordflow">for</font> (<a class="code" href="class_i_d3___tag_impl.html#s1">const_iterator</a> cur = <a class="code" href="class_i_d3___tag_impl.html#a34">begin</a>; cur != <a class="code" href="class_i_d3___tag_impl.html#a35">end</a>; ++cur)
00235 {
00236 <font class="keywordflow">if</font> ((*cur != NULL) && ((*cur)->GetID() == id) &&
00237 ((*cur)->GetField(fldID)->Get() == data))
00238 {
00239 <font class="comment">// We've found a valid frame. Set the cursor to be the next element</font>
00240 frame = *cur;
00241 _cursor = ++cur;
00242 <font class="keywordflow">break</font>;
00243 }
00244 }
00245 }
00246
00247 <font class="keywordflow">return</font> frame;
00248 }
00249
</pre></div><hr><address><small>Generated on Thu Jan 3 07:35:56 2002 for id3lib by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.gif" alt="doxygen" align="middle" border=0
width=110 height=53></a>1.2.12 written by <a href="mailto:dimitri@stack.nl">Dimitri van Heesch</a>,
© 1997-2001</small></address>
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