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<div class="title">dataslave.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * This file is part of the KDE libraries</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright (c) 2003 Leo Savernik <l.savernik@aon.at></span>
<a name="l00004"></a>00004 <span class="comment"> * Derived from slave.cpp</span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This library 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 Library General Public</span>
<a name="l00008"></a>00008 <span class="comment"> * License version 2 as published by the Free Software Foundation.</span>
<a name="l00009"></a>00009 <span class="comment"> *</span>
<a name="l00010"></a>00010 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00011"></a>00011 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00012"></a>00012 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00013"></a>00013 <span class="comment"> * Library General Public License for more details.</span>
<a name="l00014"></a>00014 <span class="comment"> *</span>
<a name="l00015"></a>00015 <span class="comment"> * You should have received a copy of the GNU Library General Public License</span>
<a name="l00016"></a>00016 <span class="comment"> * along with this library; see the file COPYING.LIB. If not, write to</span>
<a name="l00017"></a>00017 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="l00018"></a>00018 <span class="comment"> * 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">#include <config.h></span>
<a name="l00022"></a>00022
<a name="l00023"></a>00023 <span class="preprocessor">#include "dataslave.h"</span>
<a name="l00024"></a>00024 <span class="preprocessor">#include "dataprotocol.h"</span>
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include <klocale.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="preprocessor">#include <qtimer.h></span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">using namespace </span>KIO;
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#define KIO_DATA_POLL_INTERVAL 0</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span>
<a name="l00035"></a>00035 <span class="comment">// don't forget to sync DISPATCH_DECL in dataslave.h</span>
<a name="l00036"></a>00036 <span class="preprocessor">#define DISPATCH_IMPL(type) \</span>
<a name="l00037"></a>00037 <span class="preprocessor"> void DataSlave::dispatch_##type() { \</span>
<a name="l00038"></a>00038 <span class="preprocessor"> if (_suspended) { \</span>
<a name="l00039"></a>00039 <span class="preprocessor"> QueueStruct q(Queue_##type); \</span>
<a name="l00040"></a>00040 <span class="preprocessor"> dispatchQueue.push_back(q); \</span>
<a name="l00041"></a>00041 <span class="preprocessor"> if (!timer->isActive()) timer->start(KIO_DATA_POLL_INTERVAL); \</span>
<a name="l00042"></a>00042 <span class="preprocessor"> } else \</span>
<a name="l00043"></a>00043 <span class="preprocessor"> type(); \</span>
<a name="l00044"></a>00044 <span class="preprocessor"> }</span>
<a name="l00045"></a>00045 <span class="preprocessor"></span>
<a name="l00046"></a>00046 <span class="comment">// don't forget to sync DISPATCH_DECL1 in dataslave.h</span>
<a name="l00047"></a>00047 <span class="preprocessor">#define DISPATCH_IMPL1(type, paramtype, paramname) \</span>
<a name="l00048"></a>00048 <span class="preprocessor"> void DataSlave::dispatch_##type(paramtype paramname) { \</span>
<a name="l00049"></a>00049 <span class="preprocessor"> if (_suspended) { \</span>
<a name="l00050"></a>00050 <span class="preprocessor"> QueueStruct q(Queue_##type); \</span>
<a name="l00051"></a>00051 <span class="preprocessor"> q.paramname = paramname; \</span>
<a name="l00052"></a>00052 <span class="preprocessor"> dispatchQueue.push_back(q); \</span>
<a name="l00053"></a>00053 <span class="preprocessor"> if (!timer->isActive()) timer->start(KIO_DATA_POLL_INTERVAL); \</span>
<a name="l00054"></a>00054 <span class="preprocessor"> } else \</span>
<a name="l00055"></a>00055 <span class="preprocessor"> type(paramname); \</span>
<a name="l00056"></a>00056 <span class="preprocessor"> }</span>
<a name="l00057"></a>00057 <span class="preprocessor"></span>
<a name="l00058"></a>00058
<a name="l00059"></a>00059 DataSlave::DataSlave() :
<a name="l00060"></a>00060 <a class="code" href="classKIO_1_1Slave.html" title="Attention developers: If you change the implementation of KIO::Slave, do *not* use connection() or sl...">Slave</a>(true, 0, <span class="stringliteral">"data"</span>, <a class="codeRef" href="qstring.html">QString</a>::null)
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 <span class="comment">//kdDebug() << this << k_funcinfo << endl;</span>
<a name="l00063"></a>00063 _suspended = <span class="keyword">false</span>;
<a name="l00064"></a>00064 timer = <span class="keyword">new</span> <a class="codeRef" href="qtimer.html">QTimer</a>(<span class="keyword">this</span>);
<a name="l00065"></a>00065 <a class="codeRef" href="qobject.html#connect">connect</a>(timer, SIGNAL(timeout()), SLOT(<a class="code" href="classKIO_1_1DataSlave.html#a3140e3ac87f867ec014cec10841e0d6b" title="dispatches next queued method.">dispatchNext</a>()));
<a name="l00066"></a>00066 }
<a name="l00067"></a>00067
<a name="l00068"></a>00068 DataSlave::~DataSlave() {
<a name="l00069"></a>00069 <span class="comment">//kdDebug() << this << k_funcinfo << endl;</span>
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a><a class="code" href="classKIO_1_1DataSlave.html#a13ed20ab3bae8fa76ad365df33dea2b8">00072</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#a13ed20ab3bae8fa76ad365df33dea2b8" title="Puts the kioslave associated with url at halt.">DataSlave::hold</a>(<span class="keyword">const</span> KURL &<span class="comment">/*url*/</span>) {
<a name="l00073"></a>00073 <span class="comment">// ignored</span>
<a name="l00074"></a>00074 }
<a name="l00075"></a>00075
<a name="l00076"></a><a class="code" href="classKIO_1_1DataSlave.html#aa7ff46c5b1d31df7482cf70f041f1dce">00076</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#aa7ff46c5b1d31df7482cf70f041f1dce" title="Suspends the operation of the attached kioslave.">DataSlave::suspend</a>() {
<a name="l00077"></a>00077 _suspended = <span class="keyword">true</span>;
<a name="l00078"></a>00078 <span class="comment">//kdDebug() << this << k_funcinfo << endl;</span>
<a name="l00079"></a>00079 timer-><a class="codeRef" href="qtimer.html#stop">stop</a>();
<a name="l00080"></a>00080 }
<a name="l00081"></a>00081
<a name="l00082"></a><a class="code" href="classKIO_1_1DataSlave.html#abed4a2c1df3635380209b46c5265687d">00082</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#abed4a2c1df3635380209b46c5265687d" title="Resumes the operation of the attached kioslave.">DataSlave::resume</a>() {
<a name="l00083"></a>00083 _suspended = <span class="keyword">false</span>;
<a name="l00084"></a>00084 <span class="comment">//kdDebug() << this << k_funcinfo << endl;</span>
<a name="l00085"></a>00085 <span class="comment">// aarrrgh! This makes the once hyper fast and efficient data protocol</span>
<a name="l00086"></a>00086 <span class="comment">// implementation slow as molasses. But it wouldn't work otherwise,</span>
<a name="l00087"></a>00087 <span class="comment">// and I don't want to start messing around with threads</span>
<a name="l00088"></a>00088 timer-><a class="codeRef" href="qtimer.html#start">start</a>(KIO_DATA_POLL_INTERVAL);
<a name="l00089"></a>00089 }
<a name="l00090"></a>00090
<a name="l00091"></a>00091 <span class="comment">// finished is a special case. If we emit it right away, then</span>
<a name="l00092"></a>00092 <span class="comment">// TransferJob::start can delete the job even before the end of the method</span>
<a name="l00093"></a>00093 <span class="keywordtype">void</span> DataSlave::dispatch_finished() {
<a name="l00094"></a>00094 QueueStruct q(Queue_finished);
<a name="l00095"></a>00095 dispatchQueue.<a class="codeRef" href="qvaluelist.html#push_back">push_back</a>(q);
<a name="l00096"></a>00096 <span class="keywordflow">if</span> (!timer-><a class="codeRef" href="qtimer.html#isActive">isActive</a>()) timer-><a class="codeRef" href="qtimer.html#start">start</a>(KIO_DATA_POLL_INTERVAL);
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098
<a name="l00099"></a><a class="code" href="classKIO_1_1DataSlave.html#a3140e3ac87f867ec014cec10841e0d6b">00099</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#a3140e3ac87f867ec014cec10841e0d6b" title="dispatches next queued method.">DataSlave::dispatchNext</a>() {
<a name="l00100"></a>00100 <span class="keywordflow">if</span> (dispatchQueue.<a class="codeRef" href="qvaluelist.html#empty">empty</a>()) {
<a name="l00101"></a>00101 timer-><a class="codeRef" href="qtimer.html#stop">stop</a>();
<a name="l00102"></a>00102 <span class="keywordflow">return</span>;
<a name="l00103"></a>00103 }
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keyword">const</span> <a class="code" href="structKIO_1_1DataSlave_1_1QueueStruct.html" title="structure for queueing.">QueueStruct</a> &q = dispatchQueue.<a class="codeRef" href="qvaluelist.html#front">front</a>();
<a name="l00106"></a>00106 <span class="comment">//kdDebug() << this << k_funcinfo << "dispatching " << q.type << " " << dispatchQueue.size() << " left" << endl;</span>
<a name="l00107"></a>00107 <span class="keywordflow">switch</span> (q.type) {
<a name="l00108"></a>00108 <span class="keywordflow">case</span> Queue_mimeType: mimeType(q.s); <span class="keywordflow">break</span>;
<a name="l00109"></a>00109 <span class="keywordflow">case</span> Queue_totalSize: totalSize(q.size); <span class="keywordflow">break</span>;
<a name="l00110"></a>00110 <span class="keywordflow">case</span> Queue_sendMetaData: <a class="code" href="classKIO_1_1DataSlave.html#ad8f543576903fe677812ab45c5924ed4" title="Sends metadata set with setAllMetaData.">sendMetaData</a>(); <span class="keywordflow">break</span>;
<a name="l00111"></a>00111 <span class="keywordflow">case</span> Queue_data: data(q.ba); <span class="keywordflow">break</span>;
<a name="l00112"></a>00112 <span class="keywordflow">case</span> Queue_finished: finished(); <span class="keywordflow">break</span>;
<a name="l00113"></a>00113 }<span class="comment">/*end switch*/</span>
<a name="l00114"></a>00114
<a name="l00115"></a>00115 dispatchQueue.<a class="codeRef" href="qvaluelist.html#pop_front">pop_front</a>();
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117
<a name="l00118"></a><a class="code" href="classKIO_1_1DataSlave.html#ac4b958af1b47d21cb50c0d97121d25b0">00118</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#ac4b958af1b47d21cb50c0d97121d25b0" title="Sends the given command to the kioslave.">DataSlave::send</a>(<span class="keywordtype">int</span> cmd, <span class="keyword">const</span> <a class="codeRef" href="qbytearray.html">QByteArray</a> &arr) {
<a name="l00119"></a>00119 <a class="codeRef" href="qdatastream.html">QDataStream</a> stream(arr, IO_ReadOnly);
<a name="l00120"></a>00120
<a name="l00121"></a>00121 KURL url;
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordflow">switch</span> (cmd) {
<a name="l00124"></a>00124 <span class="keywordflow">case</span> CMD_GET: {
<a name="l00125"></a>00125 stream >> url;
<a name="l00126"></a>00126 <span class="keyword">get</span>(url);
<a name="l00127"></a>00127 <span class="keywordflow">break</span>;
<a name="l00128"></a>00128 }
<a name="l00129"></a>00129 <span class="keywordflow">case</span> CMD_MIMETYPE: {
<a name="l00130"></a>00130 stream >> url;
<a name="l00131"></a>00131 mimetype(url);
<a name="l00132"></a>00132 <span class="keywordflow">break</span>;
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 <span class="comment">// ignore these (must not emit error, otherwise SIGSEGV occurs)</span>
<a name="l00135"></a>00135 <span class="keywordflow">case</span> CMD_META_DATA:
<a name="l00136"></a>00136 <span class="keywordflow">case</span> CMD_SUBURL:
<a name="l00137"></a>00137 <span class="keywordflow">break</span>;
<a name="l00138"></a>00138 <span class="keywordflow">default</span>:
<a name="l00139"></a>00139 error(ERR_UNSUPPORTED_ACTION,
<a name="l00140"></a>00140 <a class="code" href="namespaceKIO.html#a1757c6533ace2e8bad19d3b636d61065" title="Returns an appropriate error message if the given command cmd is an unsupported action (ERR_UNSUPPORT...">unsupportedActionErrorString</a>(<a class="codeRef" href="qstring.html#fromLatin1">QString::fromLatin1</a>(<span class="stringliteral">"data"</span>),cmd));
<a name="l00141"></a>00141 }<span class="comment">/*end switch*/</span>
<a name="l00142"></a>00142 }
<a name="l00143"></a>00143
<a name="l00144"></a><a class="code" href="classKIO_1_1DataSlave.html#a766d1e9cf14a1903f5e813607957fd59">00144</a> <span class="keywordtype">bool</span> <a class="code" href="classKIO_1_1DataSlave.html#a766d1e9cf14a1903f5e813607957fd59" title="Tells wether the kioslave is suspended.">DataSlave::suspended</a>() {
<a name="l00145"></a>00145 <span class="keywordflow">return</span> _suspended;
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a><a class="code" href="classKIO_1_1DataSlave.html#a07b4b775d482f1934420c9c8dca0973b">00148</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#a07b4b775d482f1934420c9c8dca0973b" title="Set host for url.">DataSlave::setHost</a>(<span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &<span class="comment">/*host*/</span>, <span class="keywordtype">int</span> <span class="comment">/*port*/</span>,
<a name="l00149"></a>00149 <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &<span class="comment">/*user*/</span>, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &<span class="comment">/*passwd*/</span>) {
<a name="l00150"></a>00150 <span class="comment">// irrelevant -> will be ignored</span>
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00153"></a><a class="code" href="classKIO_1_1DataSlave.html#a3b929e4974bd1117e4ce8356a2533a26">00153</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#a3b929e4974bd1117e4ce8356a2533a26" title="Configure slave.">DataSlave::setConfig</a>(<span class="keyword">const</span> <a class="code" href="classKIO_1_1MetaData.html" title="MetaData is a simple map of key/value strings.">MetaData</a> &<span class="comment">/*config*/</span>) {
<a name="l00154"></a>00154 <span class="comment">// FIXME: decide to handle this directly or not at all</span>
<a name="l00155"></a>00155 <span class="preprocessor">#if 0</span>
<a name="l00156"></a>00156 <span class="preprocessor"></span> <a class="codeRef" href="qbytearray.html">QByteArray</a> data;
<a name="l00157"></a>00157 <a class="codeRef" href="qdatastream.html">QDataStream</a> stream( data, IO_WriteOnly );
<a name="l00158"></a>00158 stream << config;
<a name="l00159"></a>00159 slaveconn.send( CMD_CONFIG, data );
<a name="l00160"></a>00160 <span class="preprocessor">#endif</span>
<a name="l00161"></a>00161 <span class="preprocessor"></span>}
<a name="l00162"></a>00162
<a name="l00163"></a><a class="code" href="classKIO_1_1DataSlave.html#a863ac6005507fc657bb4c986efbfc5a1">00163</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#a863ac6005507fc657bb4c986efbfc5a1" title="Sets metadata.">DataSlave::setAllMetaData</a>(<span class="keyword">const</span> <a class="code" href="classKIO_1_1MetaData.html" title="MetaData is a simple map of key/value strings.">MetaData</a> &md) {
<a name="l00164"></a>00164 meta_data = md;
<a name="l00165"></a>00165 }
<a name="l00166"></a>00166
<a name="l00167"></a><a class="code" href="classKIO_1_1DataSlave.html#ad8f543576903fe677812ab45c5924ed4">00167</a> <span class="keywordtype">void</span> <a class="code" href="classKIO_1_1DataSlave.html#ad8f543576903fe677812ab45c5924ed4" title="Sends metadata set with setAllMetaData.">DataSlave::sendMetaData</a>() {
<a name="l00168"></a>00168 emit metaData(meta_data);
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keywordtype">void</span> DataSlave::virtual_hook( <span class="keywordtype">int</span> <span class="keywordtype">id</span>, <span class="keywordtype">void</span>* data ) {
<a name="l00172"></a>00172 <span class="keywordflow">switch</span> (<span class="keywordtype">id</span>) {
<a name="l00173"></a>00173 <span class="keywordflow">case</span> VIRTUAL_SUSPEND: <a class="code" href="classKIO_1_1DataSlave.html#aa7ff46c5b1d31df7482cf70f041f1dce" title="Suspends the operation of the attached kioslave.">suspend</a>(); <span class="keywordflow">return</span>;
<a name="l00174"></a>00174 <span class="keywordflow">case</span> VIRTUAL_RESUME: <a class="code" href="classKIO_1_1DataSlave.html#abed4a2c1df3635380209b46c5265687d" title="Resumes the operation of the attached kioslave.">resume</a>(); <span class="keywordflow">return</span>;
<a name="l00175"></a>00175 <span class="keywordflow">case</span> VIRTUAL_SEND: {
<a name="l00176"></a>00176 SendParams *params = <span class="keyword">reinterpret_cast<</span>SendParams *<span class="keyword">></span>(data);
<a name="l00177"></a>00177 <a class="code" href="classKIO_1_1DataSlave.html#ac4b958af1b47d21cb50c0d97121d25b0" title="Sends the given command to the kioslave.">send</a>(params->cmd, *params->arr);
<a name="l00178"></a>00178 <span class="keywordflow">return</span>;
<a name="l00179"></a>00179 }
<a name="l00180"></a>00180 <span class="keywordflow">case</span> VIRTUAL_HOLD: {
<a name="l00181"></a>00181 HoldParams *params = <span class="keyword">reinterpret_cast<</span>HoldParams *<span class="keyword">></span>(data);
<a name="l00182"></a>00182 <a class="code" href="classKIO_1_1DataSlave.html#a13ed20ab3bae8fa76ad365df33dea2b8" title="Puts the kioslave associated with url at halt.">hold</a>(*params->url);
<a name="l00183"></a>00183 <span class="keywordflow">return</span>;
<a name="l00184"></a>00184 }
<a name="l00185"></a>00185 <span class="keywordflow">case</span> VIRTUAL_SUSPENDED: {
<a name="l00186"></a>00186 SuspendedParams *params = <span class="keyword">reinterpret_cast<</span>SuspendedParams *<span class="keyword">></span>(data);
<a name="l00187"></a>00187 params->retval = <a class="code" href="classKIO_1_1DataSlave.html#a766d1e9cf14a1903f5e813607957fd59" title="Tells wether the kioslave is suspended.">suspended</a>();
<a name="l00188"></a>00188 <span class="keywordflow">return</span>;
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190 <span class="keywordflow">case</span> VIRTUAL_SET_HOST: {
<a name="l00191"></a>00191 SetHostParams *params = <span class="keyword">reinterpret_cast<</span>SetHostParams *<span class="keyword">></span>(data);
<a name="l00192"></a>00192 <a class="code" href="classKIO_1_1DataSlave.html#a07b4b775d482f1934420c9c8dca0973b" title="Set host for url.">setHost</a>(*params->host,params->port,*params->user,*params->passwd);
<a name="l00193"></a>00193 <span class="keywordflow">return</span>;
<a name="l00194"></a>00194 }
<a name="l00195"></a>00195 <span class="keywordflow">case</span> VIRTUAL_SET_CONFIG: {
<a name="l00196"></a>00196 SetConfigParams *params = <span class="keyword">reinterpret_cast<</span>SetConfigParams *<span class="keyword">></span>(data);
<a name="l00197"></a>00197 <a class="code" href="classKIO_1_1DataSlave.html#a3b929e4974bd1117e4ce8356a2533a26" title="Configure slave.">setConfig</a>(*params->config);
<a name="l00198"></a>00198 <span class="keywordflow">return</span>;
<a name="l00199"></a>00199 }
<a name="l00200"></a>00200 <span class="keywordflow">default</span>:
<a name="l00201"></a>00201 KIO::Slave::virtual_hook( <span class="keywordtype">id</span>, data );
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203 }
<a name="l00204"></a>00204
<a name="l00205"></a>00205 DISPATCH_IMPL1(mimeType, <span class="keyword">const</span> <a class="codeRef" href="qstring.html">QString</a> &, s)
<a name="l00206"></a>00206 DISPATCH_IMPL1(totalSize, KIO::<a class="code" href="namespaceKIO.html#a90b418366ba9052c97d4dca845026f43" title="64-bit file size">filesize_t</a>, size)
<a name="l00207"></a>00207 DISPATCH_IMPL(sendMetaData)
<a name="l00208"></a>00208 DISPATCH_IMPL1(data, const <a class="codeRef" href="qbytearray.html">QByteArray</a> &, ba)
<a name="l00209"></a>00209
<a name="l00210"></a>00210 <span class="preprocessor">#undef DISPATCH_IMPL</span>
<a name="l00211"></a>00211 <span class="preprocessor"></span><span class="preprocessor">#undef DISPATCH_IMPL1</span>
<a name="l00212"></a>00212 <span class="preprocessor"></span>
<a name="l00213"></a>00213 <span class="preprocessor">#include "dataslave.moc"</span>
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