106 lines
3.4 KiB
C++
106 lines
3.4 KiB
C++
/****************************************************************************
|
|
**
|
|
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
|
|
** Contact: http://www.qt-project.org/legal
|
|
**
|
|
** This file is part of the QtCore module of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
** Commercial License Usage
|
|
** Licensees holding valid commercial Qt licenses may use this file in
|
|
** accordance with the commercial license agreement provided with the
|
|
** Software or, alternatively, in accordance with the terms contained in
|
|
** a written agreement between you and Digia. For licensing terms and
|
|
** conditions see http://qt.digia.com/licensing. For further information
|
|
** use the contact form at http://qt.digia.com/contact-us.
|
|
**
|
|
** 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, Digia gives you certain additional
|
|
** rights. These rights are described in the Digia Qt LGPL Exception
|
|
** version 1.1, 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.
|
|
**
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef QFILEDEVICE_P_H
|
|
#define QFILEDEVICE_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 "private/qiodevice_p.h"
|
|
#include "private/qringbuffer_p.h"
|
|
|
|
QT_BEGIN_NAMESPACE
|
|
|
|
class QAbstractFileEngine;
|
|
class QFSFileEngine;
|
|
|
|
class QFileDevicePrivate : public QIODevicePrivate
|
|
{
|
|
Q_DECLARE_PUBLIC(QFileDevice)
|
|
protected:
|
|
QFileDevicePrivate();
|
|
~QFileDevicePrivate();
|
|
|
|
virtual QAbstractFileEngine *engine() const;
|
|
|
|
inline bool ensureFlushed() const;
|
|
|
|
bool putCharHelper(char c);
|
|
|
|
void setError(QFileDevice::FileError err);
|
|
void setError(QFileDevice::FileError err, const QString &errorString);
|
|
void setError(QFileDevice::FileError err, int errNum);
|
|
|
|
mutable QAbstractFileEngine *fileEngine;
|
|
QRingBuffer writeBuffer;
|
|
mutable qint64 cachedSize;
|
|
|
|
QFileDevice::FileHandleFlags handleFlags;
|
|
QFileDevice::FileError error;
|
|
|
|
bool lastWasWrite;
|
|
};
|
|
|
|
inline bool QFileDevicePrivate::ensureFlushed() const
|
|
{
|
|
// This function ensures that the write buffer has been flushed (const
|
|
// because certain const functions need to call it.
|
|
if (lastWasWrite) {
|
|
const_cast<QFileDevicePrivate *>(this)->lastWasWrite = false;
|
|
if (!const_cast<QFileDevice *>(q_func())->flush())
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
QT_END_NAMESPACE
|
|
|
|
#endif // QFILEDEVICE_P_H
|