You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
5.1 KiB
142 lines
5.1 KiB
/***************************************************************************
|
|
* Copyright (C) 2003-2005 by The Amarok Developers *
|
|
* *
|
|
* This program is free software; you can redistribute it and/or modify *
|
|
* it under the terms of the GNU General Public License as published by *
|
|
* the Free Software Foundation; either version 2 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* This program 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 General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the GNU General Public License *
|
|
* along with this program; if not, write to the *
|
|
* Free Software Foundation, Inc., *
|
|
* 51 Franklin Steet, Fifth Floor, Boston, MA 02110-1301, USA. *
|
|
***************************************************************************/
|
|
|
|
#ifndef AMAROK_SCANCONTROLLER_H
|
|
#define AMAROK_SCANCONTROLLER_H
|
|
|
|
#include <qmutex.h>
|
|
#include <qxml.h> //baseclass
|
|
|
|
#include "threadmanager.h" //baseclass
|
|
|
|
class CollectionDB;
|
|
class KProcIO;
|
|
|
|
/**
|
|
* @class ScanController
|
|
* @short Starts and controls the external amarokcollectionscanner application.
|
|
* @author Mark Kretschmann <markey@web.de>
|
|
*
|
|
* The collection scanner itself is run in an external process, unlike before, where it
|
|
* used to be thread. The advantage is that the scanner cannot crash the Amarok main
|
|
* application any more. If it crashes we can simply restart it.
|
|
*
|
|
* Amarok communicates with the scanner via the ScanController class, which processes
|
|
* XML entities written to stdout by the scanner process. For XML parsing an event
|
|
* driven SAX2 parser is used, which can process the entities as they arrive, without
|
|
* the need for a DOM document structure.
|
|
*/
|
|
|
|
class ScanController : public ThreadManager::DependentJob, public QXmlDefaultHandler
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
static const int RestartEventType = 8891;
|
|
|
|
class RestartEvent : public QCustomEvent {
|
|
public:
|
|
RestartEvent() : QCustomEvent( RestartEventType ) {}
|
|
};
|
|
|
|
static const int PlaylistFoundEventType = 8890;
|
|
|
|
class PlaylistFoundEvent : public QCustomEvent {
|
|
public:
|
|
PlaylistFoundEvent( QString path )
|
|
: QCustomEvent( PlaylistFoundEventType )
|
|
, m_path( path ) {}
|
|
QString path() { return m_path; }
|
|
private:
|
|
QString m_path;
|
|
};
|
|
|
|
public:
|
|
ScanController( CollectionDB* parent, bool incremental, const QStringList& folders = QStringList() );
|
|
~ScanController();
|
|
static ScanController* instance();
|
|
|
|
virtual void completeJob( void );
|
|
|
|
bool isIncremental() const { return m_incremental; }
|
|
bool hasChanged() const { return m_hasChanged; }
|
|
|
|
void notifyThisBundle( MetaBundle* bundle );
|
|
bool isPaused() { return m_isPaused; }
|
|
bool tablesCreated() { return m_tablesCreated; }
|
|
|
|
signals:
|
|
void scannerAcknowledged();
|
|
void scanDone( bool changed );
|
|
|
|
public slots:
|
|
bool requestPause();
|
|
bool requestUnpause();
|
|
void requestAcknowledged();
|
|
void slotFileMoved( const QString &src, const QString &dest );
|
|
|
|
private slots:
|
|
void slotReadReady();
|
|
|
|
private:
|
|
void initIncremental();
|
|
virtual bool doJob();
|
|
static void setInstance( ScanController* instance );
|
|
|
|
bool startElement( const QString&, const QString &localName, const QString&, const QXmlAttributes &attrs );
|
|
void customEvent( QCustomEvent* );
|
|
|
|
// Member variables:
|
|
static const uint MAX_RESTARTS = 80;
|
|
static const uint MAX_FAILURE_PERCENTAGE = 5;
|
|
|
|
KProcIO* m_scanner;
|
|
QStringList m_folders;
|
|
QStringList m_foldersToRemove;
|
|
bool m_incremental;
|
|
bool m_hasChanged;
|
|
|
|
QString m_xmlData;
|
|
QMutex m_dataMutex;
|
|
QXmlInputSource* m_source;
|
|
QXmlSimpleReader* m_reader;
|
|
|
|
QStringList m_crashedFiles;
|
|
|
|
// Every file that the collection scanner finds is marked
|
|
// here, as well as the source of all files that the AFT code
|
|
// detects as having been moved. These are the files that
|
|
// have definitely not been deleted. The key is the absolute
|
|
// path.
|
|
QMap<QString,QString> m_filesAdded;
|
|
QMap<QString,QString> m_filesDeleted;
|
|
QMutex m_fileMapsMutex;
|
|
|
|
static ScanController* currController;
|
|
|
|
MetaBundle* m_waitingBundle;
|
|
bool m_lastCommandPaused;
|
|
bool m_isPaused;
|
|
bool m_tablesCreated;
|
|
int m_scanCount;
|
|
};
|
|
|
|
|
|
#endif // AMAROK_SCANCONTROLLER_H
|