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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QIODEVICE_P_H
#define QIODEVICE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of QIODevice. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "QtCore/qiodevice.h"
#include "QtCore/qbytearray.h"
#include "QtCore/qobjectdefs.h"
#include "QtCore/qstring.h"
#include "private/qringbuffer_p.h"
#ifndef QT_NO_QOBJECT
#include "private/qobject_p.h"
#endif
QT_BEGIN_NAMESPACE
#ifndef QIODEVICE_BUFFERSIZE
#define QIODEVICE_BUFFERSIZE Q_INT64_C(16384)
#endif
Q_CORE_EXPORT int qt_subtract_from_timeout(int timeout, int elapsed);
class Q_CORE_EXPORT QIODevicePrivate
#ifndef QT_NO_QOBJECT
: public QObjectPrivate
#endif
{
Q_DECLARE_PUBLIC(QIODevice)
public:
QIODevicePrivate();
virtual ~QIODevicePrivate();
QIODevice::OpenMode openMode;
QString errorString;
QRingBuffer buffer;
qint64 pos;
qint64 devicePos;
qint64 transactionPos;
bool transactionStarted;
bool baseReadLineDataCalled;
virtual bool putCharHelper(char c);
enum AccessMode {
Unset,
Sequential,
RandomAccess
};
mutable AccessMode accessMode;
inline bool isSequential() const
{
if (accessMode == Unset)
accessMode = q_func()->isSequential() ? Sequential : RandomAccess;
return accessMode == Sequential;
}
inline bool isBufferEmpty() const
{
return buffer.isEmpty() || (transactionStarted && isSequential()
&& transactionPos == buffer.size());
}
void seekBuffer(qint64 newPos);
virtual qint64 peek(char *data, qint64 maxSize);
virtual QByteArray peek(qint64 maxSize);
#ifdef QT_NO_QOBJECT
QIODevice *q_ptr;
#endif
};
QT_END_NAMESPACE
#endif // QIODEVICE_P_H
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