kfilterdev.h

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/* This file is part of the KDE libraries
   Copyright (C) 2000 David Faure <faure@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., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/
#ifndef __kfilterdev_h
#define __kfilterdev_h

#include <kdecore_export.h>
#include <QtCore/QIODevice>
#include <QtCore/QString>

class QFile;
class KFilterBase;

class KDECORE_EXPORT KFilterDev : public QIODevice
{
public:
    virtual ~KFilterDev();

    virtual bool open( QIODevice::OpenMode mode );
    virtual void close();

    void setOrigFileName( const QByteArray & fileName );

    void setSkipHeaders();

    virtual bool seek( qint64 );

    virtual bool atEnd() const;

    //virtual bool isSequential() const { return true; }

public:


    // KDE4 TODO: turn those static methods into constructors

    static QIODevice * deviceForFile( const QString & fileName, const QString & mimetype = QString(),
                                      bool forceFilter = false );

    static QIODevice * device( QIODevice* inDevice, const QString & mimetype, bool autoDeleteInDevice = true );

protected:
    virtual qint64 readData( char *data, qint64 maxlen );
    virtual qint64 writeData( const char *data, qint64 len );

private:
    explicit KFilterDev( KFilterBase * filter, bool autoDeleteFilterBase = false );
private:
    class Private;
    Private* const d;
};


#endif