kdecore Library: ksycocafactory.cpp Source File (kdecore Library)

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# ksycocafactory.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 "ksycoca.h"
    00020 #include "ksycocatype.h"
    00021 #include "ksycocafactory.h"
    00022 #include "ksycocaentry.h"
    00023 #include "ksycocadict.h"
    00024 #include <qstringlist.h>
    00025 #include <qdict.h>
    00026 #include <kdebug.h>
    00027
    00028 template class QDict<KSycocaEntry>;
    00029 template class QDict<KSharedPtr<KSycocaEntry> >;
    00030
    00031 KSycocaFactory::KSycocaFactory(KSycocaFactoryId factory_id)
    00032  : m_resourceList(0), m_entryDict(0), m_sycocaDict(0)
    00033 {
    00034   if (!KSycoca::self()->isBuilding()) // read-only database ?
    00035   {
    00036       m_str = KSycoca::self()->findFactory( factory_id );
    00037       // can't call factoryId() here since the constructor can't call inherited methods
    00038       if (m_str) // Can be 0 in case of errors
    00039       {
    00040           // Read position of index tables....
    00041           Q_INT32 i;
    00042           (*m_str) >> i;
    00043           m_sycocaDictOffset = i;
    00044           (*m_str) >> i;
    00045           m_beginEntryOffset = i;
    00046           (*m_str) >> i;
    00047           m_endEntryOffset = i;
    00048
    00049           int saveOffset = m_str->device()->at();
    00050           // Init index tables
    00051           m_sycocaDict = new KSycocaDict(m_str, m_sycocaDictOffset);
    00052           saveOffset = m_str->device()->at(saveOffset);
    00053       }
    00054    }
    00055    else
    00056    {
    00057       // Build new database!
    00058       m_str = 0;
    00059       m_resourceList = 0;
    00060       m_entryDict = new KSycocaEntryDict(977);
    00061       m_entryDict->setAutoDelete(true);
    00062       m_sycocaDict = new KSycocaDict();
    00063       m_beginEntryOffset = 0;
    00064       m_endEntryOffset = 0;
    00065
    00066       // m_resourceList will be filled in by inherited constructors
    00067    }
    00068    KSycoca::self()->addFactory(this);
    00069 }
    00070
    00071 KSycocaFactory::~KSycocaFactory()
    00072 {
    00073    delete m_entryDict;
    00074    delete m_sycocaDict;
    00075 }
    00076
    00077 void
    00078 KSycocaFactory::saveHeader(QDataStream &str)
    00079 {
    00080    // Write header
    00081    str.device()->at(mOffset);
    00082    str << (Q_INT32) m_sycocaDictOffset;
    00083    str << (Q_INT32) m_beginEntryOffset;
    00084    str << (Q_INT32) m_endEntryOffset;
    00085 }
    00086
    00087 void
    00088 KSycocaFactory::save(QDataStream &str)
    00089 {
    00090    if (!m_entryDict) return; // Error! Function should only be called when
    00091                              // building database
    00092    if (!m_sycocaDict) return; // Error!
    00093
    00094    mOffset = str.device()->at(); // store position in member variable
    00095    m_sycocaDictOffset = 0;
    00096
    00097    // Write header (pass #1)
    00098    saveHeader(str);
    00099
    00100    m_beginEntryOffset = str.device()->at();
    00101
    00102    // Write all entries.
    00103    int entryCount = 0;
    00104    for(QDictIterator<KSycocaEntry::Ptr> it ( *m_entryDict );
    00105        it.current();
    00106        ++it)
    00107    {
    00108       KSycocaEntry *entry = (*it.current());
    00109       entry->save(str);
    00110       entryCount++;
    00111    }
    00112
    00113    m_endEntryOffset = str.device()->at();
    00114
    00115    // Write indices...
    00116    // Linear index
    00117    str << (Q_INT32) entryCount;
    00118    for(QDictIterator<KSycocaEntry::Ptr> it ( *m_entryDict );
    00119        it.current();
    00120        ++it)
    00121    {
    00122       KSycocaEntry *entry = (*it.current());
    00123       str << (Q_INT32) entry->offset();
    00124    }
    00125
    00126    // Dictionary index
    00127    m_sycocaDictOffset = str.device()->at();
    00128    m_sycocaDict->save(str);
    00129
    00130    int endOfFactoryData = str.device()->at();
    00131
    00132    // Update header (pass #2)
    00133    saveHeader(str);
    00134
    00135    // Seek to end.
    00136    str.device()->at(endOfFactoryData);
    00137 }
    00138
    00139 void
    00140 KSycocaFactory::addEntry(KSycocaEntry *newEntry, const char *)
    00141 {
    00142    if (!m_entryDict) return; // Error! Function should only be called when
    00143                              // building database
    00144
    00145    if (!m_sycocaDict) return; // Error!
    00146
    00147    QString name = newEntry->name();
    00148    m_entryDict->insert( name, new KSycocaEntry::Ptr(newEntry) );
    00149    m_sycocaDict->add( name, newEntry );
    00150 }
    00151
    00152 void
    00153 KSycocaFactory::removeEntry(KSycocaEntry *newEntry)
    00154 {
    00155    if (!m_entryDict) return; // Error! Function should only be called when
    00156                              // building database
    00157
    00158    if (!m_sycocaDict) return; // Error!
    00159
    00160    QString name = newEntry->name();
    00161    m_entryDict->remove( name );
    00162    m_sycocaDict->remove( name );
    00163 }
    00164
    00165 KSycocaEntry::List KSycocaFactory::allEntries()
    00166 {
    00167    KSycocaEntry::List list;
    00168    if (!m_str) return list;
    00169
    00170    // Assume we're NOT building a database
    00171
    00172    m_str->device()->at(m_endEntryOffset);
    00173    Q_INT32 entryCount;
    00174    (*m_str) >> entryCount;
    00175
    00176    if (entryCount > 8192)
    00177    {
    00178       KSycoca::flagError();
    00179       return list;
    00180    }
    00181
    00182    Q_INT32 *offsetList = new Q_INT32[entryCount];
    00183    for(int i = 0; i < entryCount; i++)
    00184    {
    00185       (*m_str) >> offsetList[i];
    00186    }
    00187
    00188    for(int i = 0; i < entryCount; i++)
    00189    {
    00190       KSycocaEntry *newEntry = createEntry(offsetList[i]);
    00191       if (newEntry)
    00192       {
    00193          list.append( KSycocaEntry::Ptr( newEntry ) );
    00194       }
    00195    }
    00196    delete [] offsetList;
    00197    return list;
    00198 }
    00199
    00200 void KSycocaFactory::virtual_hook( int /*id*/, void* /*data*/)
    00201 { /*BASE::virtual_hook( id, data );*/ }
    00202

This file is part of the documentation for kdecore Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
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