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Merge pull request #1566 from xiaoyifang/opt/remove-mimetex.cgi
opt: remove mimetex.cgi logic
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xiaoyifang
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commit
6f7a7e36fe
149
src/dict/slob.cc
149
src/dict/slob.cc
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@ -579,7 +579,6 @@ class SlobDictionary: public BtreeIndexing::BtreeDictionary
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BtreeIndex resourceIndex;
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IdxHeader idxHeader;
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SlobFile sf;
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QString texCgiPath, texCachePath;
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string idxFileName;
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@ -701,22 +700,9 @@ SlobDictionary::SlobDictionary( string const & id, string const & indexFile, vec
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// Full-text search parameters
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ftsIdxName = indexFile + Dictionary::getFtsSuffix();
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texCgiPath = Config::getProgramDataDir() + "/mimetex.cgi";
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if ( QFileInfo( texCgiPath ).exists() ) {
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QString dirName = QString::fromStdString( getId() );
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QDir( QDir::tempPath() ).mkdir( dirName );
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texCachePath = QDir::tempPath() + "/" + dirName;
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}
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else
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texCgiPath.clear();
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}
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SlobDictionary::~SlobDictionary()
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{
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if ( !texCachePath.isEmpty() )
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Utils::Fs::removeDirectory( texCachePath );
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}
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SlobDictionary::~SlobDictionary() {}
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void SlobDictionary::loadIcon() noexcept
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{
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@ -837,142 +823,13 @@ string SlobDictionary::convert( const string & in, RefEntry const & entry )
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}
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newText.clear();
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// Handle TeX formulas via mimetex.cgi
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if ( !texCgiPath.isEmpty() ) {
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QRegularExpression texImage( R"lit(<\s*img\s+class="([^"]+)"\s*([^>]*)alt="([^"]+)"[^>]*>)lit" );
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QRegularExpression regFrac( "\\\\[dt]frac" );
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QRegularExpression regSpaces( R"(\s+([\{\(\[\}\)\]]))" );
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QRegExp multReg( R"(\*\{(\d+)\}([^\{]|\{([^\}]+)\}))", Qt::CaseSensitive, QRegExp::RegExp2 );
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QString arrayDesc( "\\begin{array}{" );
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pos = 0;
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unsigned texCount = 0;
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QString imgName;
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QRegularExpressionMatchIterator it = texImage.globalMatch( text );
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QString newText;
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while ( it.hasNext() ) {
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QRegularExpressionMatch match = it.next();
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newText += text.mid( pos, match.capturedStart() - pos );
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pos = match.capturedEnd();
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QStringList list = match.capturedTexts();
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if ( list[ 1 ].compare( "tex" ) == 0 || list[ 1 ].compare( "mwe-math-fallback-image-inline" ) == 0
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|| list[ 1 ].endsWith( " tex" ) ) {
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QString name;
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name = name.asprintf( "%04X%04X%04X.gif", entry.itemIndex, entry.binIndex, texCount );
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imgName = texCachePath + "/" + name;
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if ( !QFileInfo( imgName ).exists() ) {
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// Replace some TeX commands which don't support by mimetex.cgi
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QString tex = list[ 3 ];
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tex.replace( regSpaces, "\\1" );
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tex.replace( regFrac, "\\frac" );
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tex.replace( "\\leqslant", "\\leq" );
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tex.replace( "\\geqslant", "\\geq" );
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tex.replace( "\\infin", "\\infty" );
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tex.replace( "\\iff", "\\Longleftrightarrow" );
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tex.replace( "\\tbinom", "\\binom" );
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tex.replace( "\\implies", "\\Longrightarrow" );
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tex.replace( "{aligned}", "{align*}" );
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tex.replace( "\\Subset", "\\subset" );
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tex.replace( "\\xrightarrow", "\\longrightarrow^" );
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tex.remove( "\\scriptstyle" );
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tex.remove( "\\mathop" );
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tex.replace( "\\bigg|", "|" );
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// Format array descriptions (mimetex now don't support *{N}x constructions in it)
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int pos1 = 0;
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while ( pos1 >= 0 ) {
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pos1 = tex.indexOf( arrayDesc, pos1, Qt::CaseInsensitive );
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if ( pos1 >= 0 ) {
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// Retrieve array description
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QString desc, newDesc;
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int n = 0;
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int nstart = pos1 + arrayDesc.size();
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int i;
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for ( i = 0; i + nstart < tex.size(); i++ ) {
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if ( tex[ i + nstart ] == '{' )
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n += 1;
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if ( tex[ i + nstart ] == '}' )
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n -= 1;
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if ( n < 0 )
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break;
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}
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if ( i > 0 && i + nstart + 1 < tex.size() )
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desc = tex.mid( nstart, i );
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if ( !desc.isEmpty() ) {
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// Expand multipliers: "*{5}x" -> "xxxxx"
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newDesc = desc;
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QString newStr;
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int pos2 = 0;
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while ( pos2 >= 0 ) {
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pos2 = multReg.indexIn( newDesc, pos2 );
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if ( pos2 >= 0 ) {
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QStringList list = multReg.capturedTexts();
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int n = list[ 1 ].toInt();
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for ( int i = 0; i < n; i++ )
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newStr += list[ 3 ].isEmpty() ? list[ 2 ] : list[ 3 ];
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newDesc.replace( pos2, list[ 0 ].size(), newStr );
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pos2 += newStr.size();
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}
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else
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break;
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}
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tex.replace( pos1 + arrayDesc.size(), desc.size(), newDesc );
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pos1 += arrayDesc.size() + newDesc.size();
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}
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else
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pos1 += arrayDesc.size();
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}
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else
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break;
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}
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QString command = texCgiPath + " -e " + imgName + " \"" + tex + "\"";
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QProcess::execute( command, QStringList() );
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}
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QString tag = QString( R"(<img class="imgtex" src="file://)" )
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#ifdef Q_OS_WIN32
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+ "/"
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#endif
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+ imgName + "\" alt=\"" + list[ 3 ] + "\">";
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newText += tag;
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texCount += 1;
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}
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else
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newText += list[ 0 ];
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}
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if ( pos ) {
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newText += text.mid( pos );
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text = newText;
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}
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newText.clear();
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}
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#ifdef Q_OS_WIN32
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else {
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#ifdef Q_OS_WIN32
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// Increase equations scale
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text = QString::fromLatin1( "<script type=\"text/x-mathjax-config\">MathJax.Hub.Config({" )
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+ " SVG: { scale: 170, linebreaks: { automatic:true } }"
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+ ", \"HTML-CSS\": { scale: 210, linebreaks: { automatic:true } }"
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+ ", CommonHTML: { scale: 210, linebreaks: { automatic:true } }" + " });</script>" + text;
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}
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#endif
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#endif
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// Fix outstanding elements
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text += "<br style=\"clear:both;\" />";
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@ -70,7 +70,7 @@ Main file of DictD dictionary (.dict) or Xdxf dictionary (.xdxf) can be compress
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### Slob
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GoldenDict can render formulas in TeX format via Mimetex program. Just place "mimetex.cgi" file beside GoldenDict executable file.
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GoldenDict can render TeX formulas when a slob dictionary bundles MathJax.
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### GLS
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