blob: 06aa188198ebcdc5304148e8ab3277bd7931516e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/**************************************************************************
**
** This file is part of Qt SDK**
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).*
**
** Contact: Nokia Corporation qt-info@nokia.com**
**
** GNU Lesser General Public License Usage
**
** 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
** 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you are unsure which license is appropriate for your use, please contact
** (qt-info@nokia.com).
**
**************************************************************************/
#ifndef KDMMAPPEDFILEIODEVICE_H
#define KDMMAPPEDFILEIODEVICE_H
#include <QtCore/QIODevice>
#include "installer_global.h"
class QFile;
class INSTALLER_EXPORT KDMMappedFileIODevice : public QIODevice {
Q_OBJECT
public:
KDMMappedFileIODevice( QFile* file, qint64 offset, qint64 length, QObject* parent=0 );
KDMMappedFileIODevice( const QString& filename, qint64 offset, qint64 length, QObject* parent=0 );
~KDMMappedFileIODevice();
/* reimp */ bool open( QIODevice::OpenMode openMode );
/* reimp */ void close();
private:
/* reimp */ qint64 readData( char* data, qint64 maxSize );
/* reimp */ qint64 writeData( const char* data, qint64 maxSize );
private:
bool ensureMapped();
private:
QFile* const m_file;
const bool m_ownsFile;
const qint64 m_offset;
const qint64 m_length;
unsigned char* m_data;
};
#endif // KDMMAPPEDFILEIODEVICE_H
|
