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# kservicefactory.cpp

    00001 /*  This file is part of the KDE libraries
    00002  *  Copyright (C) 1999 David Faure <faure@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., 59 Temple Place - Suite 330,
    00016  *  Boston, MA 02111-1307, USA.
    00017  **/
    00018
    00019 #include "kservicefactory.h"
    00020 #include "ksycoca.h"
    00021 #include "ksycocatype.h"
    00022 #include "ksycocadict.h"
    00023 #include "kservice.h"
    00024
    00025 #include <qstring.h>
    00026
    00027 #include <klocale.h>
    00028 #include <kdebug.h>
    00029 #include <kglobal.h>
    00030 #include <kstandarddirs.h>
    00031 #include <kstaticdeleter.h>
    00032
    00033 KServiceFactory::KServiceFactory()
    00034  : KSycocaFactory( KST_KServiceFactory )
    00035 {
    00036    m_offerListOffset = 0;
    00037    m_nameDictOffset = 0;
    00038    m_relNameDictOffset = 0;
    00039    if (m_str)
    00040    {
    00041       // Read Header
    00042       Q_INT32 i;
    00043       (*m_str) >> i;
    00044       m_nameDictOffset = i;
    00045       (*m_str) >> i;
    00046       m_relNameDictOffset = i;
    00047       (*m_str) >> i;
    00048       m_offerListOffset = i;
    00049       (*m_str) >> i;
    00050       m_initListOffset = i;
    00051
    00052       int saveOffset = m_str->device()->at();
    00053       // Init index tables
    00054       m_nameDict = new KSycocaDict(m_str, m_nameDictOffset);
    00055       // Init index tables
    00056       m_relNameDict = new KSycocaDict(m_str, m_relNameDictOffset);
    00057       saveOffset = m_str->device()->at(saveOffset);
    00058    }
    00059    else
    00060    {
    00061       // Build new database
    00062       m_nameDict = new KSycocaDict();
    00063       m_relNameDict = new KSycocaDict();
    00064    }
    00065    _self = this;
    00066 }
    00067
    00068 KServiceFactory::~KServiceFactory()
    00069 {
    00070    _self = 0L;
    00071    delete m_nameDict;
    00072    delete m_relNameDict;
    00073 }
    00074
    00075 KServiceFactory * KServiceFactory::self()
    00076 {
    00077     if (!_self) {
    00078         _self = new KServiceFactory();
    00079     }
    00080     return _self;
    00081 }
    00082
    00083 KService * KServiceFactory::findServiceByName(const QString &_name)
    00084 {
    00085    if (!m_sycocaDict) return 0; // Error!
    00086
    00087    // Warning : this assumes we're NOT building a database
    00088    // But since findServiceByName isn't called in that case...
    00089    // [ see KServiceTypeFactory for how to do it if needed ]
    00090
    00091    int offset = m_sycocaDict->find_string( _name );
    00092    if (!offset) return 0; // Not found
    00093
    00094    KService * newService = createEntry(offset);
    00095
    00096    // Check whether the dictionary was right.
    00097    if (newService && (newService->name() != _name))
    00098    {
    00099       // No it wasn't...
    00100       delete newService;
    00101       newService = 0; // Not found
    00102    }
    00103    return newService;
    00104 }
    00105
    00106 KService * KServiceFactory::findServiceByDesktopName(const QString &_name)
    00107 {
    00108    if (!m_nameDict) return 0; // Error!
    00109
    00110    // Warning : this assumes we're NOT building a database
    00111    // But since findServiceByName isn't called in that case...
    00112    // [ see KServiceTypeFactory for how to do it if needed ]
    00113
    00114    int offset = m_nameDict->find_string( _name );
    00115    if (!offset) return 0; // Not found
    00116
    00117    KService * newService = createEntry(offset);
    00118
    00119    // Check whether the dictionary was right.
    00120    if (newService && (newService->desktopEntryName() != _name))
    00121    {
    00122       // No it wasn't...
    00123       delete newService;
    00124       newService = 0; // Not found
    00125    }
    00126    return newService;
    00127 }
    00128
    00129 KService * KServiceFactory::findServiceByDesktopPath(const QString &_name)
    00130 {
    00131    if (!m_relNameDict) return 0; // Error!
    00132
    00133    // Warning : this assumes we're NOT building a database
    00134    // But since findServiceByName isn't called in that case...
    00135    // [ see KServiceTypeFactory for how to do it if needed ]
    00136
    00137    int offset = m_relNameDict->find_string( _name );
    00138    if (!offset) return 0; // Not found
    00139
    00140    KService * newService = createEntry(offset);
    00141
    00142    // Check whether the dictionary was right.
    00143    if (newService && (newService->desktopEntryPath() != _name))
    00144    {
    00145       // No it wasn't...
    00146       delete newService;
    00147       newService = 0; // Not found
    00148    }
    00149    return newService;
    00150 }
    00151
    00152 KService* KServiceFactory::createEntry(int offset)
    00153 {
    00154    KService * newEntry = 0L;
    00155    KSycocaType type;
    00156    QDataStream *str = KSycoca::self()->findEntry(offset, type);
    00157    switch(type)
    00158    {
    00159      case KST_KService:
    00160         newEntry = new KService(*str, offset);
    00161         break;
    00162
    00163      default:
    00164         kdError(7011) << QString("KServiceFactory: unexpected object entry in KSycoca database (type = %1)").arg((int)type) << endl;
    00165         return 0;
    00166    }
    00167    if (!newEntry->isValid())
    00168    {
    00169       kdError(7011) << "KServiceFactory: corrupt object in KSycoca database!\n" << endl;
    00170       delete newEntry;
    00171       newEntry = 0;
    00172    }
    00173    return newEntry;
    00174 }
    00175
    00176 KService::List KServiceFactory::allServices()
    00177 {
    00178    KService::List result;
    00179    KSycocaEntry::List list = allEntries();
    00180    for( KSycocaEntry::List::Iterator it = list.begin();
    00181         it != list.end();
    00182         ++it)
    00183    {
    00184       KService *newService = dynamic_cast<KService *>((*it).data());
    00185       if (newService)
    00186          result.append( KService::Ptr( newService ) );
    00187    }
    00188    return result;
    00189 }
    00190
    00191 KService::List KServiceFactory::allInitServices()
    00192 {
    00193    KService::List list;
    00194    if (!m_str) return list;
    00195
    00196    // Assume we're NOT building a database
    00197
    00198    m_str->device()->at(m_initListOffset);
    00199    Q_INT32 entryCount;
    00200    (*m_str) >> entryCount;
    00201
    00202    Q_INT32 *offsetList = new Q_INT32[entryCount];
    00203    for(int i = 0; i < entryCount; i++)
    00204    {
    00205       (*m_str) >> offsetList[i];
    00206    }
    00207
    00208    for(int i = 0; i < entryCount; i++)
    00209    {
    00210       KService *newEntry = createEntry(offsetList[i]);
    00211       if (newEntry)
    00212       {
    00213          list.append( KService::Ptr( newEntry ) );
    00214       }
    00215    }
    00216    delete [] offsetList;
    00217    return list;
    00218 }
    00219
    00220 KService::List KServiceFactory::offers( int serviceTypeOffset )
    00221 {
    00222    KService::List list;
    00223
    00224    QDataStream *str = m_str;
    00225    // Jump to the offer list
    00226    str->device()->at( m_offerListOffset );
    00227
    00228    Q_INT32 aServiceTypeOffset;
    00229    Q_INT32 aServiceOffset;
    00230    // We might want to do a binary search instead of a linear search
    00231    // since servicetype offsets are sorted. Bah.
    00232    while (true)
    00233    {
    00234       (*str) >> aServiceTypeOffset;
    00235       if ( aServiceTypeOffset )
    00236       {
    00237          (*str) >> aServiceOffset;
    00238          if ( aServiceTypeOffset == serviceTypeOffset )
    00239          {
    00240             // Save stream position !
    00241             int savedPos = str->device()->at();
    00242             // Create Service
    00243             KService * serv = createEntry( aServiceOffset );
    00244             if (serv)
    00245                 list.append( KService::Ptr( serv ) );
    00246             // Restore position
    00247             str->device()->at( savedPos );
    00248          } else if ( aServiceTypeOffset > (Q_INT32)serviceTypeOffset )
    00249             break; // too far
    00250       }
    00251       else
    00252          break; // 0 => end of list
    00253    }
    00254    return list;
    00255 }
    00256
    00257 KServiceFactory *KServiceFactory::_self = 0;
    00258
    00259 void KServiceFactory::virtual_hook( int id, void* data )
    00260 { KSycocaFactory::virtual_hook( id, data ); }
    00261

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 13:14:18 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001