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# kservicetypefactory.cpp

    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., 59 Temple Place - Suite 330,
    00016  *  Boston, MA 02111-1307, USA.
    00017  **/
    00018
    00019 #include "kservicetypefactory.h"
    00020 #include "ksycoca.h"
    00021 #include "ksycocatype.h"
    00022 #include "ksycocadict.h"
    00023 #include "kservicetype.h"
    00024 #include "kmimetype.h"
    00025 #include "kuserprofile.h"
    00026
    00027 #include <kapplication.h>
    00028 #include <kdebug.h>
    00029 #include <assert.h>
    00030 #include <kstringhandler.h>
    00031 #include <qfile.h>
    00032
    00033 KServiceTypeFactory::KServiceTypeFactory()
    00034  : KSycocaFactory( KST_KServiceTypeFactory )
    00035 {
    00036    _self = this;
    00037    m_fastPatternOffset = 0;
    00038    m_otherPatternOffset = 0;
    00039    if (m_str)
    00040    {
    00041       // Read Header
    00042       Q_INT32 i,n;
    00043       (*m_str) >> i;
    00044       m_fastPatternOffset = i;
    00045       (*m_str) >> i;
    00046       m_otherPatternOffset = i;
    00047       (*m_str) >> n;
    00048
    00049       if (n > 1024)
    00050       {
    00051          KSycoca::flagError();
    00052       }
    00053       else
    00054       {
    00055          QString str;
    00056          for(;n;n--)
    00057          {
    00058             KSycocaEntry::read(*m_str, str);
    00059             (*m_str) >> i;
    00060             m_propertyTypeDict.insert(str, i);
    00061          }
    00062       }
    00063    }
    00064 }
    00065
    00066
    00067 KServiceTypeFactory::~KServiceTypeFactory()
    00068 {
    00069   _self = 0L;
    00070   KServiceTypeProfile::clear();
    00071 }
    00072
    00073 KServiceTypeFactory * KServiceTypeFactory::self()
    00074 {
    00075   if (!_self)
    00076     _self = new KServiceTypeFactory();
    00077   return _self;
    00078 }
    00079
    00080 KServiceType * KServiceTypeFactory::findServiceTypeByName(const QString &_name)
    00081 {
    00082    if (!m_sycocaDict) return 0L; // Error!
    00083    assert (!KSycoca::self()->isBuilding());
    00084    int offset = m_sycocaDict->find_string( _name );
    00085    if (!offset) return 0; // Not found
    00086    KServiceType * newServiceType = createEntry(offset);
    00087
    00088    // Check whether the dictionary was right.
    00089    if (newServiceType && (newServiceType->name() != _name))
    00090    {
    00091      // No it wasn't...
    00092      delete newServiceType;
    00093      newServiceType = 0; // Not found
    00094    }
    00095    return newServiceType;
    00096 }
    00097
    00098 QVariant::Type KServiceTypeFactory::findPropertyTypeByName(const QString &_name)
    00099 {
    00100    if (!m_sycocaDict)
    00101       return QVariant::Invalid; // Error!
    00102
    00103    assert (!KSycoca::self()->isBuilding());
    00104
    00105    QMapConstIterator<QString,int> it = m_propertyTypeDict.find(_name);
    00106    if (it != m_propertyTypeDict.end()) {
    00107      return (QVariant::Type)it.data();
    00108    }
    00109
    00110    return QVariant::Invalid;
    00111 }
    00112
    00113 KMimeType * KServiceTypeFactory::findFromPattern(const QString &_filename)
    00114 {
    00115    // Assume we're NOT building a database
    00116    if (!m_str) return 0;
    00117
    00118    // Get stream to the header
    00119    QDataStream *str = m_str;
    00120
    00121    str->device()->at( m_fastPatternOffset );
    00122
    00123    Q_INT32 nrOfEntries;
    00124    (*str) >> nrOfEntries;
    00125    Q_INT32 entrySize;
    00126    (*str) >> entrySize;
    00127
    00128    Q_INT32 fastOffset =  str->device()->at( );
    00129
    00130    Q_INT32 matchingOffset = 0;
    00131
    00132    // Let's go for a binary search in the "fast" pattern index
    00133    Q_INT32 left = 0;
    00134    Q_INT32 right = nrOfEntries - 1;
    00135    Q_INT32 middle;
    00136    // Extract extension
    00137    int lastDot = _filename.findRev('.');
    00138    int ext_len = _filename.length() - lastDot - 1;
    00139    if (lastDot != -1 && ext_len <= 4) // if no '.', skip the extension lookup
    00140    {
    00141       QString extension = _filename.right( ext_len );
    00142       extension = extension.leftJustify(4);
    00143
    00144       QString pattern;
    00145       while (left <= right) {
    00146          middle = (left + right) / 2;
    00147          // read pattern at position "middle"
    00148          str->device()->at( middle * entrySize + fastOffset );
    00149          KSycocaEntry::read(*str, pattern);
    00150          int cmp = pattern.compare( extension );
    00151          if (cmp < 0)
    00152             left = middle + 1;
    00153          else if (cmp == 0) // found
    00154          {
    00155             (*str) >> matchingOffset;
    00156             // don't return newServiceType - there may be an "other" pattern that
    00157             // matches best this file, like *.tar.bz
    00158             break; // but get out of the fast patterns
    00159          }
    00160          else
    00161             right = middle - 1;
    00162       }
    00163    }
    00164
    00165    // Now try the "other" Pattern table
    00166    if ( m_patterns.size() == 0 ) {
    00167       str->device()->at( m_otherPatternOffset );
    00168
    00169       QString pattern;
    00170       Q_INT32 mimetypeOffset;
    00171
    00172       while (true)
    00173       {
    00174          KSycocaEntry::read(*str, pattern);
    00175          if (pattern.isEmpty()) // end of list
    00176             break;
    00177          (*str) >> mimetypeOffset;
    00178          m_patterns.push_back( pattern );
    00179          m_pattern_offsets.push_back( mimetypeOffset );
    00180       }
    00181    }
    00182
    00183    assert( m_patterns.size() == m_pattern_offsets.size() );
    00184
    00185    QStringList::const_iterator it = m_patterns.begin();
    00186    QStringList::const_iterator end = m_patterns.end();
    00187    QValueVector<Q_INT32>::const_iterator it_offset = m_pattern_offsets.begin();
    00188
    00189   for ( ; it != end; ++it, ++it_offset )
    00190    {
    00191       if ( KStringHandler::matchFilename( _filename, *it ) )
    00192       {
    00193          matchingOffset = *it_offset;
    00194          break;
    00195       }
    00196    }
    00197
    00198    if ( matchingOffset ) {
    00199       KServiceType *newServiceType = createEntry( matchingOffset );
    00200       assert (newServiceType && newServiceType->isType( KST_KMimeType ));
    00201       return (KMimeType *) newServiceType;
    00202    }
    00203    else
    00204       return 0;
    00205 }
    00206
    00207 KMimeType::List KServiceTypeFactory::allMimeTypes()
    00208 {
    00209    KMimeType::List result;
    00210    KSycocaEntry::List list = allEntries();
    00211    for( KSycocaEntry::List::Iterator it = list.begin();
    00212         it != list.end();
    00213         ++it)
    00214    {
    00215       KMimeType *newMimeType = dynamic_cast<KMimeType *>((*it).data());
    00216       if (newMimeType)
    00217          result.append( KMimeType::Ptr( newMimeType ) );
    00218    }
    00219    return result;
    00220 }
    00221
    00222 KServiceType::List KServiceTypeFactory::allServiceTypes()
    00223 {
    00224    KServiceType::List result;
    00225    KSycocaEntry::List list = allEntries();
    00226    for( KSycocaEntry::List::Iterator it = list.begin();
    00227         it != list.end();
    00228         ++it)
    00229    {
    00230 #ifndef Q_WS_QWS
    00231       KServiceType *newServiceType = dynamic_cast<KServiceType *>((*it).data());
    00232 #else //FIXME
    00233       KServiceType *newServiceType = (KServiceType*)(*it).data();
    00234 #endif
    00235       if (newServiceType)
    00236          result.append( KServiceType::Ptr( newServiceType ) );
    00237    }
    00238    return result;
    00239 }
    00240
    00241 bool KServiceTypeFactory::checkMimeTypes()
    00242 {
    00243    QDataStream *str = KSycoca::self()->findFactory( factoryId() );
    00244    if (!str) return false;
    00245
    00246    // check if there are mimetypes/servicetypes
    00247    return (m_beginEntryOffset != m_endEntryOffset);
    00248 }
    00249
    00250 KServiceType * KServiceTypeFactory::createEntry(int offset)
    00251 {
    00252    KServiceType *newEntry = 0;
    00253    KSycocaType type;
    00254    QDataStream *str = KSycoca::self()->findEntry(offset, type);
    00255    if (!str) return 0;
    00256
    00257    switch(type)
    00258    {
    00259      case KST_KServiceType:
    00260         newEntry = new KServiceType(*str, offset);
    00261         break;
    00262      case KST_KMimeType:
    00263         newEntry = new KMimeType(*str, offset);
    00264         break;
    00265      case KST_KFolderType:
    00266         newEntry = new KFolderType(*str, offset);
    00267         break;
    00268      case KST_KDEDesktopMimeType:
    00269         newEntry = new KDEDesktopMimeType(*str, offset);
    00270         break;
    00271      case KST_KExecMimeType:
    00272         newEntry = new KExecMimeType(*str, offset);
    00273         break;
    00274
    00275      default:
    00276         kdError(7011) << QString("KServiceTypeFactory: unexpected object entry in KSycoca database (type = %1)").arg((int)type) << endl;
    00277         break;
    00278    }
    00279    if (!newEntry->isValid())
    00280    {
    00281       kdError(7011) << "KServiceTypeFactory: corrupt object in KSycoca database!\n" << endl;
    00282       delete newEntry;
    00283       newEntry = 0;
    00284    }
    00285    return newEntry;
    00286 }
    00287
    00288 KServiceTypeFactory *KServiceTypeFactory::_self = 0;
    00289
    00290 void KServiceTypeFactory::virtual_hook( int id, void* data )
    00291 { KSycocaFactory::virtual_hook( id, data ); }
    00292
    00293 // vim: ts=3 sw=3 et

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 13:14:20 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001