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<h1>Source: ksycoca.h</h1>
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<pre>
/* This file is part of the KDE libraries
* Copyright (C) 1999 Waldo Bastian <bastian@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation;
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
**/
#ifndef __ksycoca_h__
#define __ksycoca_h__ "$Id: ksycoca.h,v 1.44.2.1 2001/09/07 20:54:54 waba Exp $"
#include <dcopobject.h>
#include <qobject.h>
#include "ksycocatype.h"
class QDataStream;
class KSycocaPrivate;
class KSycocaFactory;
class KSycocaFactoryList;
/**
* Sycoca file version number.
* If the existing file is outdated, it will not get read
* but instead we'll ask kded to regenerate a new one...
*/
#define KSYCOCA_VERSION 40
/**
* @internal
* Read-only SYstem COnfiguration CAche
*/
class KSycoca : public QObject, public DCOPObject
{
Q_OBJECT
K_DCOP
protected:
/**
* @internal
* Building database
*/
KSycoca( bool /* buildDatabase */ );
public:
/**
* Read-only database
*/
KSycoca();
/**
* Get or create the only instance of KSycoca (read-only)
*/
static KSycoca *self();
virtual ~KSycoca();
/**
* @internal - called by factories in read-only mode
* This is how factories get a stream to an entry
*/
QDataStream *findEntry(int offset, KSycocaType &type);
/**
* @internal - called by factories in read-only mode
*/
QDataStream *findFactory( KSycocaFactoryId id);
/**
* @internal - returns kfsstnd stored inside database
*/
QString kfsstnd_prefixes();
/**
* @internal - returns timestamp of database
*
* The database contains all changes made _before_ this time and
* _might_ contain changes made after that.
*/
Q_UINT32 timeStamp();
/**
* @internal - add a factory
*/
void addFactory( KSycocaFactory * );
/**
* @internal
* @return true if building (i.e. if a KBuildSycoca);
*/
virtual bool isBuilding() { return false; }
/**
* Determine relative path for a .desktop file from a full path and a resource name
*/
static QString determineRelativePath( const QString & _fullpath, const char *_resource );
/**
* When you receive a "databaseChanged" signal, you can query here if
* a change has occured in a specific resource type.
* @see KStandardDirs for the various resource types.
*/
static bool isChanged(const char *type);
k_dcop:
/**
* internal function for receiving kded/kbuildsycoca's signal, when the sycoca file changes
*/
void notifyDatabaseChanged(const QStringList &);
signals:
/**
* Connect to this to get notified when the database changes
* (Usually apps showing icons do a 'refresh' to take into account the new mimetypes)
*/
void databaseChanged();
protected:
bool checkVersion(bool abortOnError=true);
bool openDatabase(bool openDummyIfNotFound=true);
void closeDatabase();
KSycocaFactoryList *m_lstFactories;
QDataStream *m_str;
static KSycoca *_self;
bool bNoDatabase;
size_t m_sycoca_size;
const char *m_sycoca_mmap;
Q_UINT32 m_timeStamp;
private:
KSycocaPrivate *d;
};
#endif
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