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-rw-r--r--kopete/plugins/latex/latexplugin.cpp259
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diff --git a/kopete/plugins/latex/latexplugin.cpp b/kopete/plugins/latex/latexplugin.cpp
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+++ b/kopete/plugins/latex/latexplugin.cpp
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+/*
+ Kopete Latex Plugin
+
+ Copyright (c) 2004 by Duncan Mac-Vicar Prett <duncan@kde.org>
+ Copyright (c) 2004-2005 by Olivier Goffart <ogoffart@kde. org>
+
+ Kopete (c) 2001-2004 by the Kopete developers <kopete-devel@kde.org>
+
+ *************************************************************************
+ * *
+ * This program is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ *************************************************************************
+*/
+
+#include <qregexp.h>
+#include <qimage.h>
+#include <qbuffer.h>
+#include <qcstring.h>
+#include <qstylesheet.h>
+#include <kgenericfactory.h>
+#include <kdebug.h>
+#include <kstandarddirs.h>
+#include <kprocess.h>
+#include <ktempfile.h>
+#include <kmdcodec.h>
+#include <kmessagebox.h>
+
+#include "kopetechatsessionmanager.h"
+#include "kopeteuiglobal.h"
+
+#include "latexplugin.h"
+#include "latexconfig.h"
+#include "latexguiclient.h"
+
+#define ENCODED_IMAGE_MODE 0
+
+typedef KGenericFactory<LatexPlugin> LatexPluginFactory;
+K_EXPORT_COMPONENT_FACTORY( kopete_latex, LatexPluginFactory( "kopete_latex" ) )
+
+LatexPlugin::LatexPlugin( QObject *parent, const char *name, const QStringList &/*args*/ )
+: Kopete::Plugin( LatexPluginFactory::instance(), parent, name )
+{
+// kdDebug() << k_funcinfo << endl;
+ if( !s_pluginStatic )
+ s_pluginStatic = this;
+
+ mMagickNotFoundShown = false;
+ connect( Kopete::ChatSessionManager::self(), SIGNAL( aboutToDisplay( Kopete::Message & ) ), SLOT( slotMessageAboutToShow( Kopete::Message & ) ) );
+ connect( Kopete::ChatSessionManager::self(), SIGNAL( aboutToSend(Kopete::Message& ) ), this, SLOT(slotMessageAboutToSend(Kopete::Message& ) ) );
+ connect ( this , SIGNAL( settingsChanged() ) , this , SLOT( slotSettingsChanged() ) );
+ connect( Kopete::ChatSessionManager::self(), SIGNAL( chatSessionCreated( Kopete::ChatSession * ) ),
+ this, SLOT( slotNewChatSession( Kopete::ChatSession * ) ) );
+
+ m_convScript = KStandardDirs::findExe("kopete_latexconvert.sh");
+ slotSettingsChanged();
+
+ //Add GUI action to all already existing kmm (if the plugin is launched when kopete already rining)
+ QValueList<Kopete::ChatSession*> sessions = Kopete::ChatSessionManager::self()->sessions();
+ for (QValueListIterator<Kopete::ChatSession*> it= sessions.begin(); it!=sessions.end() ; ++it)
+ slotNewChatSession( *it );
+}
+
+LatexPlugin::~LatexPlugin()
+{
+ s_pluginStatic = 0L;
+}
+
+LatexPlugin* LatexPlugin::plugin()
+{
+ return s_pluginStatic ;
+}
+
+LatexPlugin* LatexPlugin::s_pluginStatic = 0L;
+
+void LatexPlugin::slotNewChatSession( Kopete::ChatSession *KMM )
+{
+ new LatexGUIClient( KMM );
+}
+
+
+void LatexPlugin::slotMessageAboutToShow( Kopete::Message& msg )
+{
+ QString mMagick = KStandardDirs::findExe("convert");
+ if ( mMagick.isEmpty() )
+ {
+ // show just once
+ if ( !mMagickNotFoundShown )
+ {
+ KMessageBox::queuedMessageBox(
+ Kopete::UI::Global::mainWidget(),
+ KMessageBox::Error, i18n("I cannot find the Magick convert program.\nconvert is required to render the Latex formulas.\nPlease go to www.imagemagick.org or to your distribution site and get the right package.")
+ );
+ mMagickNotFoundShown = true;
+ }
+ // dont try to parse if convert is not installed
+ return;
+ }
+
+ QString messageText = msg.plainBody();
+ if( !messageText.contains("$$"))
+ return;
+
+ //kdDebug() << k_funcinfo << " Using converter: " << m_convScript << endl;
+
+ // /\[([^]]).*?\[/$1\]/
+ // \$\$.+?\$\$
+
+ // this searches for $$formula$$
+ QRegExp rg("\\$\\$.+\\$\\$");
+ rg.setMinimal(true);
+ // this searches for [latex]formula[/latex]
+ //QRegExp rg("\\[([^]\]).*?\\[/$1\\]");
+
+ int pos = 0;
+
+ QMap<QString, QString> replaceMap;
+ while (pos >= 0 && (unsigned int)pos < messageText.length())
+ {
+// kdDebug() << k_funcinfo << " searching pos: " << pos << endl;
+ pos = rg.search(messageText, pos);
+
+ if (pos >= 0 )
+ {
+ QString match = rg.cap(0);
+ pos += rg.matchedLength();
+
+ QString formul=match;
+ if(!securityCheck(formul))
+ continue;
+
+ QString fileName=handleLatex(formul.replace("$$",""));
+
+ // get the image and encode it with base64
+ #if ENCODED_IMAGE_MODE
+ QImage renderedImage( fileName );
+ imagePxWidth = renderedImage.width();
+ imagePxHeight = renderedImage.height();
+ if ( !renderedImage.isNull() )
+ {
+ QByteArray ba;
+ QBuffer buffer( ba );
+ buffer.open( IO_WriteOnly );
+ renderedImage.save( &buffer, "PNG" );
+ QString imageURL = QString::fromLatin1("data:image/png;base64,%1").arg( KCodecs::base64Encode( ba ) );
+ replaceMap[match] = imageURL;
+ }
+ #else
+ replaceMap[match] = fileName;
+ #endif
+ }
+ }
+
+ if(replaceMap.isEmpty()) //we haven't found any latex strings
+ return;
+
+ messageText= msg.escapedBody();
+
+ int imagePxWidth,imagePxHeight;
+ for (QMap<QString,QString>::ConstIterator it = replaceMap.begin(); it != replaceMap.end(); ++it)
+ {
+ QImage theImage(*it);
+ if(theImage.isNull())
+ continue;
+ imagePxWidth = theImage.width();
+ imagePxHeight = theImage.height();
+ QString escapedLATEX=QStyleSheet::escape(it.key()).replace("\"","&quot;"); //we need the escape quotes because that string will be in a title="" argument, but not the \n
+ messageText.replace(Kopete::Message::escape(it.key()), " <img width=\"" + QString::number(imagePxWidth) + "\" height=\"" + QString::number(imagePxHeight) + "\" src=\"" + (*it) + "\" alt=\"" + escapedLATEX +"\" title=\"" + escapedLATEX +"\" /> ");
+ }
+
+ msg.setBody( messageText, Kopete::Message::RichText );
+}
+
+
+void LatexPlugin::slotMessageAboutToSend( Kopete::Message& msg)
+{
+ Q_UNUSED(msg)
+ //disabled because to work correctly, we need to find what special has the gif we can send over MSN
+#if 0
+ KConfig *config = KGlobal::config();
+ config->setGroup("Latex Plugin");
+
+ if(!config->readBoolEntry("ParseOutgoing", false))
+ return;
+
+ QString messageText = msg.plainBody();
+ if( !messageText.contains("$$"))
+ return;
+/* if( msg.from()->protocol()->pluginId()!="MSNProtocol" )
+ return;*/
+
+ // this searches for $$formula$$
+ QRegExp rg("^\\s*\\$\\$([^$]+)\\$\\$\\s*$");
+
+ if( rg.search(messageText) != -1 )
+ {
+ QString latexFormula = rg.cap(1);
+ if(!securityCheck( latexFormula ))
+ return;
+
+ QString url = handleLatex(latexFormula);
+
+
+ if(!url.isNull())
+ {
+ QString escapedLATEX= QStyleSheet::escape(messageText).replace("\"","&quot;");
+ QString messageText="<img src=\"" + url + "\" alt=\"" + escapedLATEX + "\" title=\"" + escapedLATEX +"\" />";
+ msg.setBody( messageText, Kopete::Message::RichText );
+ }
+ }
+#endif
+}
+
+QString LatexPlugin::handleLatex(const QString &latexFormula)
+{
+ KTempFile *tempFile=new KTempFile( locateLocal( "tmp", "kopetelatex-" ), ".png" );
+ tempFile->setAutoDelete(true);
+ m_tempFiles.append(tempFile);
+ m_tempFiles.setAutoDelete(true);
+ QString fileName = tempFile->name();
+
+ KProcess p;
+
+ QString argumentRes = "-r %1x%2";
+ QString argumentOut = "-o %1";
+ //QString argumentFormat = "-fgif"; //we uses gif format because MSN only handle gif
+ int hDPI, vDPI;
+ hDPI = LatexConfig::self()->horizontalDPI();
+ vDPI = LatexConfig::self()->verticalDPI();
+ p << m_convScript << argumentRes.arg(QString::number(hDPI), QString::number(vDPI)) << argumentOut.arg(fileName) /*<< argumentFormat*/ << latexFormula ;
+
+ kdDebug() << k_funcinfo << " Rendering " << m_convScript << " " << argumentRes.arg(QString::number(hDPI), QString::number(vDPI)) << " " << argumentOut.arg(fileName) << endl;
+
+ // FIXME our sucky sync filter API limitations :-)
+ p.start(KProcess::Block);
+ return fileName;
+}
+
+bool LatexPlugin::securityCheck(const QString &latexFormula)
+{
+ return !latexFormula.contains(QRegExp("\\\\(def|let|futurelet|newcommand|renewcomment|else|fi|write|input|include"
+ "|chardef|catcode|makeatletter|noexpand|toksdef|every|errhelp|errorstopmode|scrollmode|nonstopmode|batchmode"
+ "|read|csname|newhelp|relax|afterground|afterassignment|expandafter|noexpand|special|command|loop|repeat|toks"
+ "|output|line|mathcode|name|item|section|mbox|DeclareRobustCommand)[^a-zA-Z]"));
+
+}
+
+void LatexPlugin::slotSettingsChanged()
+{
+ LatexConfig::self()->readConfig();
+}
+
+#include "latexplugin.moc"
+
+// vim: set noet ts=4 sts=4 sw=4:
+