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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QFILE_P_H
#define QFILE_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qabstractfileengine.h"
#include "private/qiodevice_p.h"
#include "private/qringbuffer_p.h"

QT_BEGIN_NAMESPACE

class QFilePrivate : public QIODevicePrivate
{
    Q_DECLARE_PUBLIC(QFile)

protected:
    QFilePrivate();
    ~QFilePrivate();

    bool openExternalFile(int flags, int fd);
    bool openExternalFile(int flags, FILE *fh);

    QString fileName;
    mutable QAbstractFileEngine *fileEngine;
    bool isOpen;

    bool lastWasWrite;
    QRingBuffer writeBuffer;
    inline bool ensureFlushed() const;

    bool putCharHelper(char c);
    
    QFile::FileError error;
    void setError(QFile::FileError err);
    void setError(QFile::FileError err, const QString &errorString);
    void setError(QFile::FileError err, int errNum);

private:
    static QFile::EncoderFn encoder;
    static QFile::DecoderFn decoder;
};

QT_END_NAMESPACE

#endif // QFILE_P_H