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<h2><a name="content"></a>akregator/src/librss</h2>
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<h1>loader.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * loader.cpp</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (c) 2001, 2002, 2003 Frerich Raabe <raabe@kde.org></span>
<a name="l00005"></a>00005 <span class="comment"> *</span>
<a name="l00006"></a>00006 <span class="comment"> * This program is distributed in the hope that it will be useful, but WITHOUT</span>
<a name="l00007"></a>00007 <span class="comment"> * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS</span>
<a name="l00008"></a>00008 <span class="comment"> * FOR A PARTICULAR PURPOSE. For licensing and distribution details, check the</span>
<a name="l00009"></a>00009 <span class="comment"> * accompanying file 'COPYING'.</span>
<a name="l00010"></a>00010 <span class="comment"> */</span>
<a name="l00011"></a>00011 <span class="preprocessor">#include "loader.h"</span>
<a name="l00012"></a>00012 <span class="preprocessor">#include "document.h"</span>
<a name="l00013"></a>00013 <span class="preprocessor">#include "feeddetector.h"</span>
<a name="l00014"></a>00014
<a name="l00015"></a>00015 <span class="preprocessor">#include <kio/job.h></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include <kprocess.h></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <kstaticdeleter.h></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <kurl.h></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00020"></a>00020
<a name="l00021"></a>00021 <span class="preprocessor">#include <qdom.h></span>
<a name="l00022"></a>00022 <span class="preprocessor">#include <qbuffer.h></span>
<a name="l00023"></a>00023 <span class="preprocessor">#include <qregexp.h></span>
<a name="l00024"></a>00024 <span class="preprocessor">#include <qstring.h></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include <qstringlist.h></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <qtimer.h></span>
<a name="l00027"></a>00027
<a name="l00028"></a>00028 <span class="keyword">using namespace </span>RSS;
<a name="l00029"></a>00029
<a name="l00030"></a><a class="code" href="classRSS_1_1DataRetriever.html#154b9c3fbfd303e9c0761915eb208818">00030</a> DataRetriever::DataRetriever()
<a name="l00031"></a>00031 {
<a name="l00032"></a>00032 }
<a name="l00033"></a>00033
<a name="l00034"></a><a class="code" href="classRSS_1_1DataRetriever.html#ca73b036154d60bfa410beb1a49c04bb">00034</a> <a class="code" href="classRSS_1_1DataRetriever.html#ca73b036154d60bfa410beb1a49c04bb" title="Destructor.">DataRetriever::~DataRetriever</a>()
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 }
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">class </span>FileRetriever::Private
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">public</span>:
<a name="l00041"></a>00041
<a name="l00042"></a>00042 Private()
<a name="l00043"></a>00043 : buffer(NULL),
<a name="l00044"></a>00044 lastError(0), job(NULL)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 }
<a name="l00047"></a>00047
<a name="l00048"></a>00048 ~Private()
<a name="l00049"></a>00049 {
<a name="l00050"></a>00050 <span class="keyword">delete</span> buffer;
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053 QBuffer *buffer;
<a name="l00054"></a>00054 <span class="keywordtype">int</span> lastError;
<a name="l00055"></a>00055 KIO::Job *job;
<a name="l00056"></a>00056 <span class="keyword">static</span> KStaticDeleter<QString> userAgentsd;
<a name="l00057"></a>00057 <span class="keyword">static</span> QString* userAgent;
<a name="l00058"></a>00058 };
<a name="l00059"></a>00059
<a name="l00060"></a>00060 KStaticDeleter<QString> FileRetriever::Private::userAgentsd;
<a name="l00061"></a>00061 QString* FileRetriever::Private::userAgent = 0L;
<a name="l00062"></a><a class="code" href="classRSS_1_1FileRetriever.html#c28c5252538f7158b336771ed3112220">00062</a> <a class="code" href="classRSS_1_1FileRetriever.html#c28c5252538f7158b336771ed3112220" title="Default constructor.">FileRetriever::FileRetriever</a>()
<a name="l00063"></a>00063 : d(new Private)
<a name="l00064"></a>00064 {
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066
<a name="l00067"></a><a class="code" href="classRSS_1_1FileRetriever.html#80014b3e6f3b2a77c272da4605a84b10">00067</a> <a class="code" href="classRSS_1_1FileRetriever.html#80014b3e6f3b2a77c272da4605a84b10" title="Destructor.">FileRetriever::~FileRetriever</a>()
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069 <span class="keyword">delete</span> d;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a>00072 <span class="keywordtype">bool</span> FileRetriever::m_useCache = <span class="keyword">true</span>;
<a name="l00073"></a>00073
<a name="l00074"></a>00074 QString FileRetriever::userAgent()
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (Private::userAgent == 0L)
<a name="l00077"></a>00077 FileRetriever::Private::userAgentsd.setObject(Private::userAgent, <span class="keyword">new</span> QString);
<a name="l00078"></a>00078 <span class="keywordflow">return</span> *Private::userAgent;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span> FileRetriever::setUserAgent(<span class="keyword">const</span> QString &ua)
<a name="l00082"></a>00082 {
<a name="l00083"></a>00083 <span class="keywordflow">if</span> (Private::userAgent == 0L)
<a name="l00084"></a>00084 FileRetriever::Private::userAgentsd.setObject(Private::userAgent, <span class="keyword">new</span> QString);
<a name="l00085"></a>00085 (*Private::userAgent) = ua;
<a name="l00086"></a>00086 }
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="keywordtype">void</span> FileRetriever::setUseCache(<span class="keywordtype">bool</span> enabled)
<a name="l00089"></a>00089 {
<a name="l00090"></a>00090 m_useCache = enabled;
<a name="l00091"></a>00091 }
<a name="l00092"></a>00092
<a name="l00093"></a><a class="code" href="classRSS_1_1FileRetriever.html#cfa01a9e959913f34a47c2a798e0498f">00093</a> <span class="keywordtype">void</span> <a class="code" href="classRSS_1_1FileRetriever.html#cfa01a9e959913f34a47c2a798e0498f" title="Downloads the file referenced by the given URL and passes it&#39;s contents on to...">FileRetriever::retrieveData</a>(<span class="keyword">const</span> KURL &url)
<a name="l00094"></a>00094 {
<a name="l00095"></a>00095 <span class="keywordflow">if</span> (d->buffer)
<a name="l00096"></a>00096 <span class="keywordflow">return</span>;
<a name="l00097"></a>00097
<a name="l00098"></a>00098 d->buffer = <span class="keyword">new</span> QBuffer;
<a name="l00099"></a>00099 d->buffer->open(IO_WriteOnly);
<a name="l00100"></a>00100
<a name="l00101"></a>00101 KURL u=url;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="keywordflow">if</span> (u.protocol()==<span class="stringliteral">"feed"</span>)
<a name="l00104"></a>00104 u.setProtocol(<span class="stringliteral">"http"</span>);
<a name="l00105"></a>00105
<a name="l00106"></a>00106 d->job = KIO::get(u, <span class="keyword">false</span>, <span class="keyword">false</span>);
<a name="l00107"></a>00107 d->job->addMetaData(<span class="stringliteral">"cache"</span>, m_useCache ? <span class="stringliteral">"refresh"</span> : <span class="stringliteral">"reload"</span>);
<a name="l00108"></a>00108
<a name="l00109"></a>00109 QString ua = userAgent();
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (!ua.isEmpty())
<a name="l00111"></a>00111 d->job->addMetaData(<span class="stringliteral">"UserAgent"</span>, ua);
<a name="l00112"></a>00112
<a name="l00113"></a>00113
<a name="l00114"></a>00114 QTimer::singleShot(1000*90, <span class="keyword">this</span>, SLOT(slotTimeout()));
<a name="l00115"></a>00115
<a name="l00116"></a>00116 connect(d->job, SIGNAL(data(KIO::Job *, <span class="keyword">const</span> QByteArray &)),
<a name="l00117"></a>00117 SLOT(slotData(KIO::Job *, <span class="keyword">const</span> QByteArray &)));
<a name="l00118"></a>00118 connect(d->job, SIGNAL(result(KIO::Job *)), SLOT(slotResult(KIO::Job *)));
<a name="l00119"></a>00119 connect(d->job, SIGNAL(<a class="code" href="classRSS_1_1FileRetriever.html#ffde5f05c293d61c88fe640ac5df7476" title="Signals a permanent redirection.">permanentRedirection</a>(KIO::Job *, <span class="keyword">const</span> KURL &, <span class="keyword">const</span> KURL &)),
<a name="l00120"></a>00120 SLOT(slotPermanentRedirection(KIO::Job *, <span class="keyword">const</span> KURL &, <span class="keyword">const</span> KURL &)));
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="keywordtype">void</span> FileRetriever::slotTimeout()
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 abort();
<a name="l00126"></a>00126
<a name="l00127"></a>00127 <span class="keyword">delete</span> d->buffer;
<a name="l00128"></a>00128 d->buffer = NULL;
<a name="l00129"></a>00129
<a name="l00130"></a>00130 d->lastError = KIO::ERR_SERVER_TIMEOUT;
<a name="l00131"></a>00131
<a name="l00132"></a>00132 emit <a class="code" href="classRSS_1_1DataRetriever.html#f9952c6facfdfb988eb366b5122f6c7a" title="Emit this signal to tell the Loader class that the retrieval process was finished...">dataRetrieved</a>(QByteArray(), <span class="keyword">false</span>);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134
<a name="l00135"></a><a class="code" href="classRSS_1_1FileRetriever.html#6a7a5bea6a1f75a2c3ff76a215edb4df">00135</a> <span class="keywordtype">int</span> <a class="code" href="classRSS_1_1FileRetriever.html#6a7a5bea6a1f75a2c3ff76a215edb4df">FileRetriever::errorCode</a>()<span class="keyword"> const</span>
<a name="l00136"></a>00136 <span class="keyword"></span>{
<a name="l00137"></a>00137 <span class="keywordflow">return</span> d->lastError;
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139
<a name="l00140"></a>00140 <span class="keywordtype">void</span> FileRetriever::slotData(KIO::Job *, <span class="keyword">const</span> QByteArray &data)
<a name="l00141"></a>00141 {
<a name="l00142"></a>00142 d->buffer->writeBlock(data.data(), data.size());
<a name="l00143"></a>00143 }
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keywordtype">void</span> FileRetriever::slotResult(KIO::Job *job)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 QByteArray data = d->buffer->buffer();
<a name="l00148"></a>00148 data.detach();
<a name="l00149"></a>00149
<a name="l00150"></a>00150 <span class="keyword">delete</span> d->buffer;
<a name="l00151"></a>00151 d->buffer = NULL;
<a name="l00152"></a>00152
<a name="l00153"></a>00153 d->lastError = job->error();
<a name="l00154"></a>00154 emit <a class="code" href="classRSS_1_1DataRetriever.html#f9952c6facfdfb988eb366b5122f6c7a" title="Emit this signal to tell the Loader class that the retrieval process was finished...">dataRetrieved</a>(data, d->lastError == 0);
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156
<a name="l00157"></a>00157 <span class="keywordtype">void</span> FileRetriever::slotPermanentRedirection(KIO::Job *, <span class="keyword">const</span> KURL &, <span class="keyword">const</span> KURL &newUrl)
<a name="l00158"></a>00158 {
<a name="l00159"></a>00159 emit <a class="code" href="classRSS_1_1FileRetriever.html#ffde5f05c293d61c88fe640ac5df7476" title="Signals a permanent redirection.">permanentRedirection</a>(newUrl);
<a name="l00160"></a>00160 }
<a name="l00161"></a>00161
<a name="l00162"></a>00162 <span class="keywordtype">void</span> FileRetriever::abort()
<a name="l00163"></a>00163 {
<a name="l00164"></a>00164 <span class="keywordflow">if</span> (d->job)
<a name="l00165"></a>00165 {
<a name="l00166"></a>00166 d->job->kill(<span class="keyword">true</span>);
<a name="l00167"></a>00167 d->job = NULL;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 <span class="keyword">struct </span>OutputRetriever::Private
<a name="l00172"></a>00172 {
<a name="l00173"></a>00173 Private() : process(NULL),
<a name="l00174"></a>00174 buffer(NULL),
<a name="l00175"></a>00175 lastError(0)
<a name="l00176"></a>00176 {
<a name="l00177"></a>00177 }
<a name="l00178"></a>00178
<a name="l00179"></a>00179 ~Private()
<a name="l00180"></a>00180 {
<a name="l00181"></a>00181 <span class="keyword">delete</span> process;
<a name="l00182"></a>00182 <span class="keyword">delete</span> buffer;
<a name="l00183"></a>00183 }
<a name="l00184"></a>00184
<a name="l00185"></a>00185 KShellProcess *process;
<a name="l00186"></a>00186 QBuffer *buffer;
<a name="l00187"></a>00187 <span class="keywordtype">int</span> lastError;
<a name="l00188"></a>00188 };
<a name="l00189"></a>00189
<a name="l00190"></a><a class="code" href="classRSS_1_1OutputRetriever.html#2ebab1cd90d1465f3b2c2571be3501e0">00190</a> <a class="code" href="classRSS_1_1OutputRetriever.html#2ebab1cd90d1465f3b2c2571be3501e0" title="Default constructor.">OutputRetriever::OutputRetriever</a>() :
<a name="l00191"></a>00191 d(new Private)
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 }
<a name="l00194"></a>00194
<a name="l00195"></a><a class="code" href="classRSS_1_1OutputRetriever.html#08180659864491a776808f8dc98f16a2">00195</a> <a class="code" href="classRSS_1_1OutputRetriever.html#08180659864491a776808f8dc98f16a2" title="Destructor.">OutputRetriever::~OutputRetriever</a>()
<a name="l00196"></a>00196 {
<a name="l00197"></a>00197 <span class="keyword">delete</span> d;
<a name="l00198"></a>00198 }
<a name="l00199"></a>00199
<a name="l00200"></a><a class="code" href="classRSS_1_1OutputRetriever.html#20ff9a06074aed5241d605975542c4dd">00200</a> <span class="keywordtype">void</span> <a class="code" href="classRSS_1_1OutputRetriever.html#20ff9a06074aed5241d605975542c4dd" title="Executes the program referenced by the given URL and retrieves the data which the...">OutputRetriever::retrieveData</a>(<span class="keyword">const</span> KURL &url)
<a name="l00201"></a>00201 {
<a name="l00202"></a>00202 <span class="comment">// Ignore subsequent calls if we didn't finish the previous job yet.</span>
<a name="l00203"></a>00203 <span class="keywordflow">if</span> (d->buffer || d->process)
<a name="l00204"></a>00204 <span class="keywordflow">return</span>;
<a name="l00205"></a>00205
<a name="l00206"></a>00206 d->buffer = <span class="keyword">new</span> QBuffer;
<a name="l00207"></a>00207 d->buffer->open(IO_WriteOnly);
<a name="l00208"></a>00208
<a name="l00209"></a>00209 d->process = <span class="keyword">new</span> KShellProcess();
<a name="l00210"></a>00210 connect(d->process, SIGNAL(processExited(KProcess *)),
<a name="l00211"></a>00211 SLOT(slotExited(KProcess *)));
<a name="l00212"></a>00212 connect(d->process, SIGNAL(receivedStdout(KProcess *, <span class="keywordtype">char</span> *, <span class="keywordtype">int</span>)),
<a name="l00213"></a>00213 SLOT(slotOutput(KProcess *, <span class="keywordtype">char</span> *, <span class="keywordtype">int</span>)));
<a name="l00214"></a>00214 *d->process << url.path();
<a name="l00215"></a>00215 d->process->start(KProcess::NotifyOnExit, KProcess::Stdout);
<a name="l00216"></a>00216 }
<a name="l00217"></a>00217
<a name="l00218"></a><a class="code" href="classRSS_1_1OutputRetriever.html#e068f83185c4c244e109691383586a10">00218</a> <span class="keywordtype">int</span> <a class="code" href="classRSS_1_1OutputRetriever.html#e068f83185c4c244e109691383586a10">OutputRetriever::errorCode</a>()<span class="keyword"> const</span>
<a name="l00219"></a>00219 <span class="keyword"></span>{
<a name="l00220"></a>00220 <span class="keywordflow">return</span> d->lastError;
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <span class="keywordtype">void</span> OutputRetriever::slotOutput(KProcess *, <span class="keywordtype">char</span> *data, <span class="keywordtype">int</span> length)
<a name="l00224"></a>00224 {
<a name="l00225"></a>00225 d->buffer->writeBlock(data, length);
<a name="l00226"></a>00226 }
<a name="l00227"></a>00227
<a name="l00228"></a>00228 <span class="keywordtype">void</span> OutputRetriever::slotExited(KProcess *p)
<a name="l00229"></a>00229 {
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (!p->normalExit())
<a name="l00231"></a>00231 d->lastError = p->exitStatus();
<a name="l00232"></a>00232
<a name="l00233"></a>00233 QByteArray data = d->buffer->buffer();
<a name="l00234"></a>00234 data.detach();
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="keyword">delete</span> d->buffer;
<a name="l00237"></a>00237 d->buffer = NULL;
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="keyword">delete</span> d->process;
<a name="l00240"></a>00240 d->process = NULL;
<a name="l00241"></a>00241
<a name="l00242"></a>00242 emit <a class="code" href="classRSS_1_1DataRetriever.html#f9952c6facfdfb988eb366b5122f6c7a" title="Emit this signal to tell the Loader class that the retrieval process was finished...">dataRetrieved</a>(data, p->normalExit() && p->exitStatus() == 0);
<a name="l00243"></a>00243 }
<a name="l00244"></a>00244
<a name="l00245"></a>00245 <span class="keyword">struct </span>Loader::Private
<a name="l00246"></a>00246 {
<a name="l00247"></a>00247 Private() : retriever(NULL),
<a name="l00248"></a>00248 lastError(0)
<a name="l00249"></a>00249 {
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 ~Private()
<a name="l00253"></a>00253 {
<a name="l00254"></a>00254 <span class="keyword">delete</span> retriever;
<a name="l00255"></a>00255 }
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <a class="code" href="classRSS_1_1DataRetriever.html" title="Abstract baseclass for all data retriever classes.">DataRetriever</a> *retriever;
<a name="l00258"></a>00258 <span class="keywordtype">int</span> lastError;
<a name="l00259"></a>00259 KURL discoveredFeedURL;
<a name="l00260"></a>00260 KURL url;
<a name="l00261"></a>00261 };
<a name="l00262"></a>00262
<a name="l00263"></a><a class="code" href="classRSS_1_1Loader.html#d52a90cf14d7544e27178db45d5b0684">00263</a> <a class="code" href="classRSS_1_1Loader.html" title="This class is the preferred way of loading RSS files.">Loader</a> *<a class="code" href="classRSS_1_1Loader.html#d52a90cf14d7544e27178db45d5b0684" title="Constructs a Loader instance.">Loader::create</a>()
<a name="l00264"></a>00264 {
<a name="l00265"></a>00265 <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classRSS_1_1Loader.html" title="This class is the preferred way of loading RSS files.">Loader</a>;
<a name="l00266"></a>00266 }
<a name="l00267"></a>00267
<a name="l00268"></a><a class="code" href="classRSS_1_1Loader.html#8823e12f29cc2e17e2f3c63854693f9a">00268</a> <a class="code" href="classRSS_1_1Loader.html" title="This class is the preferred way of loading RSS files.">Loader</a> *<a class="code" href="classRSS_1_1Loader.html#d52a90cf14d7544e27178db45d5b0684" title="Constructs a Loader instance.">Loader::create</a>(QObject *<span class="keywordtype">object</span>, <span class="keyword">const</span> <span class="keywordtype">char</span> *slot)
<a name="l00269"></a>00269 {
<a name="l00270"></a>00270 <a class="code" href="classRSS_1_1Loader.html" title="This class is the preferred way of loading RSS files.">Loader</a> *loader = <a class="code" href="classRSS_1_1Loader.html#d52a90cf14d7544e27178db45d5b0684" title="Constructs a Loader instance.">create</a>();
<a name="l00271"></a>00271 connect(loader, SIGNAL(<a class="code" href="classRSS_1_1Loader.html#31f6cee3ca8fbde8f7dc199cde9f41f9" title="This signal gets emitted when the loading process triggered by calling loadFrom()...">loadingComplete</a>(<a class="code" href="classRSS_1_1Loader.html" title="This class is the preferred way of loading RSS files.">Loader</a> *, <a class="code" href="classRSS_1_1Document.html" title="Represents a RSS document and provides all the features and properties as stored...">Document</a>, Status)),
<a name="l00272"></a>00272 <span class="keywordtype">object</span>, slot);
<a name="l00273"></a>00273 <span class="keywordflow">return</span> loader;
<a name="l00274"></a>00274 }
<a name="l00275"></a>00275
<a name="l00276"></a>00276 Loader::Loader() : d(new Private)
<a name="l00277"></a>00277 {
<a name="l00278"></a>00278 }
<a name="l00279"></a>00279
<a name="l00280"></a>00280 Loader::~Loader()
<a name="l00281"></a>00281 {
<a name="l00282"></a>00282 <span class="keyword">delete</span> d;
<a name="l00283"></a>00283 }
<a name="l00284"></a>00284
<a name="l00285"></a><a class="code" href="classRSS_1_1Loader.html#259a68def7c44a066a980c3e544ac0db">00285</a> <span class="keywordtype">void</span> <a class="code" href="classRSS_1_1Loader.html#259a68def7c44a066a980c3e544ac0db" title="Loads the RSS file referenced by the given URL using the specified retrieval algorithm...">Loader::loadFrom</a>(<span class="keyword">const</span> KURL &url, <a class="code" href="classRSS_1_1DataRetriever.html" title="Abstract baseclass for all data retriever classes.">DataRetriever</a> *retriever)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 <span class="keywordflow">if</span> (d->retriever != NULL)
<a name="l00288"></a>00288 <span class="keywordflow">return</span>;
<a name="l00289"></a>00289
<a name="l00290"></a>00290 d->url=url;
<a name="l00291"></a>00291 d->retriever = retriever;
<a name="l00292"></a>00292
<a name="l00293"></a>00293 connect(d->retriever, SIGNAL(dataRetrieved(<span class="keyword">const</span> QByteArray &, <span class="keywordtype">bool</span>)),
<a name="l00294"></a>00294 <span class="keyword">this</span>, SLOT(slotRetrieverDone(<span class="keyword">const</span> QByteArray &, <span class="keywordtype">bool</span>)));
<a name="l00295"></a>00295
<a name="l00296"></a>00296 d->retriever->retrieveData(url);
<a name="l00297"></a>00297 }
<a name="l00298"></a>00298
<a name="l00299"></a><a class="code" href="classRSS_1_1Loader.html#266870efc4eba9eac454d305374cecd6">00299</a> <span class="keywordtype">int</span> <a class="code" href="classRSS_1_1Loader.html#266870efc4eba9eac454d305374cecd6" title="Retrieves the error code of the last loading process (if any), as reported by the...">Loader::errorCode</a>()<span class="keyword"> const</span>
<a name="l00300"></a>00300 <span class="keyword"></span>{
<a name="l00301"></a>00301 <span class="keywordflow">return</span> d->lastError;
<a name="l00302"></a>00302 }
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordtype">void</span> Loader::abort()
<a name="l00305"></a>00305 {
<a name="l00306"></a>00306 <span class="keywordflow">if</span> (d && d->retriever)
<a name="l00307"></a>00307 {
<a name="l00308"></a>00308 d->retriever->abort();
<a name="l00309"></a>00309 <span class="keyword">delete</span> d->retriever;
<a name="l00310"></a>00310 d->retriever=NULL;
<a name="l00311"></a>00311 }
<a name="l00312"></a>00312 emit <a class="code" href="classRSS_1_1Loader.html#31f6cee3ca8fbde8f7dc199cde9f41f9" title="This signal gets emitted when the loading process triggered by calling loadFrom()...">loadingComplete</a>(<span class="keyword">this</span>, QDomDocument(), Aborted);
<a name="l00313"></a>00313 <span class="keyword">delete</span> <span class="keyword">this</span>;
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315
<a name="l00316"></a>00316 <span class="keyword">const</span> KURL &Loader::discoveredFeedURL()<span class="keyword"> const</span>
<a name="l00317"></a>00317 <span class="keyword"></span>{
<a name="l00318"></a>00318 <span class="keywordflow">return</span> d->discoveredFeedURL;
<a name="l00319"></a>00319 }
<a name="l00320"></a>00320
<a name="l00321"></a>00321 <span class="keywordtype">void</span> Loader::slotRetrieverDone(<span class="keyword">const</span> QByteArray &data, <span class="keywordtype">bool</span> success)
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323 d->lastError = d->retriever->errorCode();
<a name="l00324"></a>00324
<a name="l00325"></a>00325 <span class="keyword">delete</span> d->retriever;
<a name="l00326"></a>00326 d->retriever = NULL;
<a name="l00327"></a>00327
<a name="l00328"></a>00328 <a class="code" href="classRSS_1_1Document.html" title="Represents a RSS document and provides all the features and properties as stored...">Document</a> rssDoc;
<a name="l00329"></a>00329 Status status = Success;
<a name="l00330"></a>00330
<a name="l00331"></a>00331 <span class="keywordflow">if</span> (success) {
<a name="l00332"></a>00332 QDomDocument doc;
<a name="l00333"></a>00333
<a name="l00334"></a>00334 <span class="comment">/* Some servers insert whitespace before the <?xml...?> declaration.</span>
<a name="l00335"></a>00335 <span class="comment"> * QDom doesn't tolerate that (and it's right, that's invalid XML),</span>
<a name="l00336"></a>00336 <span class="comment"> * so we strip that.</span>
<a name="l00337"></a>00337 <span class="comment"> */</span>
<a name="l00338"></a>00338
<a name="l00339"></a>00339 <span class="keyword">const</span> <span class="keywordtype">char</span> *charData = data.data();
<a name="l00340"></a>00340 <span class="keywordtype">int</span> len = data.count();
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keywordflow">while</span> (len && QChar(*charData).isSpace()) {
<a name="l00343"></a>00343 --len;
<a name="l00344"></a>00344 ++charData;
<a name="l00345"></a>00345 }
<a name="l00346"></a>00346
<a name="l00347"></a>00347 <span class="keywordflow">if</span> ( len > 3 && QChar(*charData) == QChar(0357) ) { <span class="comment">// 0357 0273 0277</span>
<a name="l00348"></a>00348 len -= 3;
<a name="l00349"></a>00349 charData += 3;
<a name="l00350"></a>00350 }
<a name="l00351"></a>00351 QByteArray tmpData;
<a name="l00352"></a>00352 tmpData.setRawData(charData, len);
<a name="l00353"></a>00353
<a name="l00354"></a>00354 <span class="keywordflow">if</span> (doc.setContent(tmpData))
<a name="l00355"></a>00355 {
<a name="l00356"></a>00356 rssDoc = <a class="code" href="classRSS_1_1Document.html" title="Represents a RSS document and provides all the features and properties as stored...">Document</a>(doc);
<a name="l00357"></a>00357 <span class="keywordflow">if</span> (!rssDoc.<a class="code" href="classRSS_1_1Document.html#d75f3805ae29044978dfea2147bff1a2">isValid</a>())
<a name="l00358"></a>00358 {
<a name="l00359"></a>00359 discoverFeeds(tmpData);
<a name="l00360"></a>00360 status = ParseError;
<a name="l00361"></a>00361 }
<a name="l00362"></a>00362 }
<a name="l00363"></a>00363 <span class="keywordflow">else</span>
<a name="l00364"></a>00364 {
<a name="l00365"></a>00365 discoverFeeds(tmpData);
<a name="l00366"></a>00366 status = ParseError;
<a name="l00367"></a>00367 }
<a name="l00368"></a>00368
<a name="l00369"></a>00369 tmpData.resetRawData(charData, len);
<a name="l00370"></a>00370 } <span class="keywordflow">else</span>
<a name="l00371"></a>00371 status = RetrieveError;
<a name="l00372"></a>00372
<a name="l00373"></a>00373 emit <a class="code" href="classRSS_1_1Loader.html#31f6cee3ca8fbde8f7dc199cde9f41f9" title="This signal gets emitted when the loading process triggered by calling loadFrom()...">loadingComplete</a>(<span class="keyword">this</span>, rssDoc, status);
<a name="l00374"></a>00374
<a name="l00375"></a>00375 <span class="keyword">delete</span> <span class="keyword">this</span>;
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordtype">void</span> Loader::discoverFeeds(<span class="keyword">const</span> QByteArray &data)
<a name="l00379"></a>00379 {
<a name="l00380"></a>00380 QString str = QString(data).simplifyWhiteSpace();
<a name="l00381"></a>00381
<a name="l00382"></a>00382 QStringList feeds;
<a name="l00383"></a>00383
<a name="l00384"></a>00384 FeedDetectorEntryList list = <a class="code" href="classRSS_1_1FeedDetector.html#24417ee5c9a1fb9abf2ee3dc483f28ac" title="searches an HTML page for feeds listed in &lt;link&gt; tags &lt;link&gt; tags with...">FeedDetector::extractFromLinkTags</a>(str);
<a name="l00385"></a>00385
<a name="l00386"></a>00386 <span class="keywordflow">for</span> (FeedDetectorEntryList::ConstIterator it = list.begin(); it != list.end(); ++it)
<a name="l00387"></a>00387 {
<a name="l00388"></a>00388 feeds += (*it).url();
<a name="l00389"></a>00389 }
<a name="l00390"></a>00390
<a name="l00391"></a>00391 <span class="keywordflow">if</span> (list.isEmpty())
<a name="l00392"></a>00392 feeds = <a class="code" href="classRSS_1_1FeedDetector.html#66bc93d78f93d0b6f24947ea5441bb7b" title="searches an HTML page for slightly feed-like looking links and catches everything...">FeedDetector::extractBruteForce</a>(str);
<a name="l00393"></a>00393
<a name="l00394"></a>00394 QString feed = feeds.first();
<a name="l00395"></a>00395 QString host = d->url.host();
<a name="l00396"></a>00396 KURL testURL;
<a name="l00397"></a>00397 <span class="comment">// loop through, prefer feeds on same host</span>
<a name="l00398"></a>00398 QStringList::Iterator end( feeds.end() );
<a name="l00399"></a>00399 <span class="keywordflow">for</span> ( QStringList::Iterator it = feeds.begin(); it != end; ++it)
<a name="l00400"></a>00400 {
<a name="l00401"></a>00401 testURL=*it;
<a name="l00402"></a>00402 <span class="keywordflow">if</span> (testURL.host() == host)
<a name="l00403"></a>00403 {
<a name="l00404"></a>00404 feed = *it;
<a name="l00405"></a>00405 <span class="keywordflow">break</span>;
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407 }
<a name="l00408"></a>00408
<a name="l00409"></a>00409 d->discoveredFeedURL = feed.isNull() ? QString() : <a class="code" href="classRSS_1_1FeedDetector.html" title="a class providing functions to detect linked feeds in HTML sources">FeedDetector</a>::fixRelativeURL(feed, d->url);
<a name="l00410"></a>00410 }
<a name="l00411"></a>00411
<a name="l00412"></a>00412 <span class="preprocessor">#include "loader.moc"</span>
<a name="l00413"></a>00413 <span class="comment">// vim:noet:ts=4</span>
</pre></div></div>
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<div class="menu_box"><h2>akregator/src/librss</h2>
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