keepassxc/src/streams/LayeredStream.h

/*
*  Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
*
*  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 or (at your option)
*  version 3 of the License.
*
*  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, see <http://www.gnu.org/licenses/>.
*/

#ifndef KEEPASSX_LAYEREDSTREAM_H
#define KEEPASSX_LAYEREDSTREAM_H

#include <QtCore/QIODevice>

class LayeredStream : public QIODevice
{
    Q_OBJECT

public:
    explicit LayeredStream(QIODevice* baseDevice);
    virtual ~LayeredStream();

    bool isSequential() const;
    virtual QString errorString() const;
    bool open(QIODevice::OpenMode mode);

protected:
    qint64 readData(char* data, qint64 maxSize);
    qint64 writeData(const char* data, qint64 maxSize);

    QIODevice* const m_baseDevice;

private Q_SLOTS:
    void closeStream();
};

#endif // KEEPASSX_LAYEREDSTREAM_H