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KDECore

kservicetypefactory.cpp

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00001 /*  This file is part of the KDE libraries
00002  *  Copyright (C) 1999 Waldo Bastian <bastian@kde.org>
00003  *
00004  *  This library is free software; you can redistribute it and/or
00005  *  modify it under the terms of the GNU Library General Public
00006  *  License version 2 as published by the Free Software Foundation;
00007  *
00008  *  This library is distributed in the hope that it will be useful,
00009  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00010  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00011  *  Library General Public License for more details.
00012  *
00013  *  You should have received a copy of the GNU Library General Public License
00014  *  along with this library; see the file COPYING.LIB.  If not, write to
00015  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00016  *  Boston, MA 02110-1301, USA.
00017  **/
00018 
00019 #include "kservicetypefactory.h"
00020 #include "ksycoca.h"
00021 #include "ksycocatype.h"
00022 #include "ksycocadict.h"
00023 #include "kservicetypeprofile.h"
00024 
00025 #include <kdebug.h>
00026 #include <assert.h>
00027 
00028 K_GLOBAL_STATIC(KSycocaFactorySingleton<KServiceTypeFactory>, kServiceTypeFactoryInstance)
00029 
00030 KServiceTypeFactory::KServiceTypeFactory()
00031     : KSycocaFactory( KST_KServiceTypeFactory )
00032 {
00033     kServiceTypeFactoryInstance->instanceCreated(this);
00034     if (!KSycoca::self()->isBuilding()) {
00035         QDataStream* str = stream();
00036         Q_ASSERT(str);
00037         if (str) {
00038             // Read Header
00039             qint32 n;
00040             (*str) >> n;
00041             if (n > 1024) {
00042                 KSycoca::flagError();
00043             } else {
00044                 QString string;
00045                 qint32 i;
00046                 for(;n;--n) {
00047                     KSycocaEntry::read(*str, string);
00048                     (*str) >> i;
00049                     m_propertyTypeDict.insert(string, i);
00050                 }
00051             }
00052         }
00053     }
00054 }
00055 
00056 KServiceTypeFactory::~KServiceTypeFactory()
00057 {
00058     KServiceTypeProfile::clearCache();
00059     if (kServiceTypeFactoryInstance.exists())
00060         kServiceTypeFactoryInstance->instanceDestroyed(this);
00061 }
00062 
00063 KServiceTypeFactory * KServiceTypeFactory::self()
00064 {
00065     return kServiceTypeFactoryInstance->self();
00066 }
00067 
00068 KServiceType::Ptr KServiceTypeFactory::findServiceTypeByName(const QString &_name)
00069 {
00070    if (!sycocaDict()) return KServiceType::Ptr(); // Error!
00071    assert (!KSycoca::self()->isBuilding());
00072    int offset = sycocaDict()->find_string( _name );
00073    if (!offset) return KServiceType::Ptr(); // Not found
00074    KServiceType::Ptr newServiceType(createEntry(offset));
00075 
00076    // Check whether the dictionary was right.
00077    if (newServiceType && (newServiceType->name() != _name))
00078    {
00079      // No it wasn't...
00080      newServiceType = 0; // Not found
00081    }
00082    return newServiceType;
00083 }
00084 
00085 QVariant::Type KServiceTypeFactory::findPropertyTypeByName(const QString &_name)
00086 {
00087    if (!sycocaDict())
00088       return QVariant::Invalid; // Error!
00089 
00090    assert (!KSycoca::self()->isBuilding());
00091 
00092    return static_cast<QVariant::Type>( m_propertyTypeDict.value( _name, QVariant::Invalid ) );
00093 }
00094 
00095 KServiceType::List KServiceTypeFactory::allServiceTypes()
00096 {
00097    KServiceType::List result;
00098    const KSycocaEntry::List list = allEntries();
00099    for( KSycocaEntry::List::ConstIterator it = list.begin();
00100         it != list.end();
00101         ++it)
00102    {
00103       if ( (*it)->isType( KST_KServiceType ) ) {
00104           KServiceType::Ptr newServiceType = KServiceType::Ptr::staticCast( *it );
00105           result.append( newServiceType );
00106       }
00107    }
00108    return result;
00109 }
00110 
00111 KServiceType * KServiceTypeFactory::createEntry(int offset) const
00112 {
00113    KServiceType *newEntry = 0;
00114    KSycocaType type;
00115    QDataStream *str = KSycoca::self()->findEntry(offset, type);
00116    if (!str) return 0;
00117 
00118    switch(type)
00119    {
00120      case KST_KServiceType:
00121         newEntry = new KServiceType(*str, offset);
00122         break;
00123      default:
00124         kError(7011) << QString("KServiceTypeFactory: unexpected object entry in KSycoca database (type = %1)").arg((int)type) << endl;
00125         break;
00126    }
00127    if (newEntry && !newEntry->isValid())
00128    {
00129       kError(7011) << "KServiceTypeFactory: corrupt object in KSycoca database!\n" << endl;
00130       delete newEntry;
00131       newEntry = 0;
00132    }
00133    return newEntry;
00134 }
00135 
00136 void KServiceTypeFactory::virtual_hook( int id, void* data )
00137 { KSycocaFactory::virtual_hook( id, data ); }

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