formatfactory.cpp

00001 /*
00002     This file is part of libkabc.
00003     Copyright (c) 2002 Tobias Koenig <tokoe@kde.org>
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public License
00016     along with this library; see the file COPYING.LIB.  If not, write to
00017     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00018     Boston, MA 02110-1301, USA.
00019 */
00020 
00021 #include <kdebug.h>
00022 #include <klocale.h>
00023 #include <ksimpleconfig.h>
00024 #include <kstandarddirs.h>
00025 #include <kstaticdeleter.h>
00026 
00027 #include <qfile.h>
00028 
00029 #include "vcardformatplugin.h"
00030 
00031 #include "formatfactory.h"
00032 
00033 using namespace KABC;
00034 
00035 FormatFactory *FormatFactory::mSelf = 0;
00036 static KStaticDeleter<FormatFactory> factoryDeleter;
00037 
00038 FormatFactory *FormatFactory::self()
00039 {
00040   kdDebug(5700) << "FormatFactory::self()" << endl;
00041 
00042   if ( !mSelf )
00043     factoryDeleter.setObject( mSelf, new FormatFactory );
00044 
00045   return mSelf;
00046 }
00047 
00048 FormatFactory::FormatFactory()
00049 {
00050   mFormatList.setAutoDelete( true );
00051 
00052   // dummy entry for default format
00053   FormatInfo *info = new FormatInfo;
00054   info->library = "<NoLibrary>";
00055   info->nameLabel = i18n( "vCard" );
00056   info->descriptionLabel = i18n( "vCard Format" );
00057   mFormatList.insert( "vcard", info );
00058 
00059   const QStringList list = KGlobal::dirs()->findAllResources( "data" ,"kabc/formats/*.desktop", true, true );
00060   for ( QStringList::ConstIterator it = list.begin(); it != list.end(); ++it )
00061   {
00062     KSimpleConfig config( *it, true );
00063 
00064     if ( !config.hasGroup( "Misc" ) || !config.hasGroup( "Plugin" ) )
00065         continue;
00066 
00067     info = new FormatInfo;
00068 
00069     config.setGroup( "Plugin" );
00070     QString type = config.readEntry( "Type" );
00071     info->library = config.readEntry( "X-KDE-Library" );
00072 
00073     config.setGroup( "Misc" );
00074     info->nameLabel = config.readEntry( "Name" );
00075     info->descriptionLabel = config.readEntry( "Comment", i18n( "No description available." ) );
00076 
00077     mFormatList.insert( type, info );
00078   }
00079 }
00080 
00081 FormatFactory::~FormatFactory()
00082 {
00083   mFormatList.clear();
00084 }
00085 
00086 QStringList FormatFactory::formats()
00087 {
00088   QStringList retval;
00089 
00090   // make sure 'vcard' is the first entry
00091   retval << "vcard";
00092 
00093   QDictIterator<FormatInfo> it( mFormatList );
00094   for ( ; it.current(); ++it )
00095     if ( it.currentKey() != "vcard" )
00096       retval << it.currentKey();
00097 
00098   return retval;
00099 }
00100 
00101 FormatInfo *FormatFactory::info( const QString &type )
00102 {
00103   if ( type.isEmpty() )
00104     return 0;
00105   else
00106     return mFormatList[ type ];
00107 }
00108 
00109 FormatPlugin *FormatFactory::format( const QString& type )
00110 {
00111   FormatPlugin *format = 0;
00112 
00113   if ( type.isEmpty() )
00114     return 0;
00115 
00116   if ( type == "vcard" ) {
00117     format = new VCardFormatPlugin;
00118     format->setType( type );
00119     format->setNameLabel( i18n( "vCard" ) );
00120     format->setDescriptionLabel( i18n( "vCard Format" ) );
00121     return format;
00122   }
00123 
00124   FormatInfo *fi = mFormatList[ type ];
00125   if (!fi)
00126       return 0;
00127   QString libName = fi->library;
00128 
00129   KLibrary *library = openLibrary( libName );
00130   if ( !library )
00131     return 0;
00132 
00133   void *format_func = library->symbol( "format" );
00134 
00135   if ( format_func ) {
00136     format = ((FormatPlugin* (*)())format_func)();
00137     format->setType( type );
00138     format->setNameLabel( fi->nameLabel );
00139     format->setDescriptionLabel( fi->descriptionLabel );
00140   } else {
00141     kdDebug( 5700 ) << "'" << libName << "' is not a format plugin." << endl;
00142     return 0;
00143   }
00144 
00145   return format;
00146 }
00147 
00148 
00149 KLibrary *FormatFactory::openLibrary( const QString& libName )
00150 {
00151   KLibrary *library = 0;
00152 
00153   QString path = KLibLoader::findLibrary( QFile::encodeName( libName ) );
00154 
00155   if ( path.isEmpty() ) {
00156     kdDebug( 5700 ) << "No format plugin library was found!" << endl;
00157     return 0;
00158   }
00159 
00160   library = KLibLoader::self()->library( QFile::encodeName( path ) );
00161 
00162   if ( !library ) {
00163     kdDebug( 5700 ) << "Could not load library '" << libName << "'" << endl;
00164     return 0;
00165   }
00166 
00167   return library;
00168 }
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