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klimitediodevice_p.h
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1/* This file is part of the KDE libraries
2 Copyright (C) 2001, 2002, 2007 David Faure <faure@kde.org>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License version 2 as published by the Free Software Foundation.
7
8 This library is distributed in the hope that it will be useful,
9 but WITHOUT ANY WARRANTY; without even the implied warranty of
10 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 Library General Public License for more details.
12
13 You should have received a copy of the GNU Library General Public License
14 along with this library; see the file COPYING.LIB. If not, write to
15 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
16 Boston, MA 02110-1301, USA.
17*/
18
19#ifndef klimitediodevice_p_h
20#define klimitediodevice_p_h
21
22#include <kdebug.h>
23#include <QtCore/QIODevice>
31class KLimitedIODevice : public QIODevice
32{
33public:
41 KLimitedIODevice( QIODevice *dev, qint64 start, qint64 length );
42 virtual ~KLimitedIODevice() {}
43
44 virtual bool isSequential() const;
45
46 virtual bool open( QIODevice::OpenMode m );
47 virtual void close();
48
49 virtual qint64 size() const;
50
51 virtual qint64 readData ( char * data, qint64 maxlen );
52 virtual qint64 writeData ( const char *, qint64 ) { return -1; } // unsupported
53 virtual int putChar( int ) { return -1; } // unsupported
54
55 //virtual qint64 pos() const { return m_dev->pos() - m_start; }
56 virtual bool seek( qint64 pos );
57 virtual qint64 bytesAvailable() const;
58private:
59 QIODevice* m_dev;
60 qint64 m_start;
61 qint64 m_length;
62};
63
64#endif
KLimitedIODevice
A readonly device that reads from an underlying device from a given point to another (e....
Definition: klimitediodevice_p.h:32
KLimitedIODevice::writeData
virtual qint64 writeData(const char *, qint64)
Definition: klimitediodevice_p.h:52
KLimitedIODevice::readData
virtual qint64 readData(char *data, qint64 maxlen)
Definition: klimitediodevice.cpp:55
KLimitedIODevice::~KLimitedIODevice
virtual ~KLimitedIODevice()
Definition: klimitediodevice_p.h:42
KLimitedIODevice::putChar
virtual int putChar(int)
Definition: klimitediodevice_p.h:53
KLimitedIODevice::seek
virtual bool seek(qint64 pos)
Definition: klimitediodevice.cpp:61
KLimitedIODevice::size
virtual qint64 size() const
Definition: klimitediodevice.cpp:50
KLimitedIODevice::isSequential
virtual bool isSequential() const
Definition: klimitediodevice.cpp:77
KLimitedIODevice::open
virtual bool open(QIODevice::OpenMode m)
Definition: klimitediodevice.cpp:28
KLimitedIODevice::bytesAvailable
virtual qint64 bytesAvailable() const
Definition: klimitediodevice.cpp:72
KLimitedIODevice::close
virtual void close()
Definition: klimitediodevice.cpp:46
QIODevice
qint64
kdebug.h
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