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/* This file is part of the KDE project
Copyright (C) 2000 David Faure <[email protected]>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef koStoreDevice_h
#define koStoreDevice_h
#include <KoStore.h>
/**
* This class implements a QIODevice around KoStore, so that
* it can be used to create a QDomDocument from it, to be written or read
* using QDataStream or to be written using QTextStream
*/
class KoStoreDevice : public QIODevice
{
public:
/// Note: KoStore::open() should be called before calling this.
KoStoreDevice( KoStore * store ) : m_store(store) {
setType( IO_Direct );
}
~KoStoreDevice() {}
bool open( int m ) {
if ( m & IO_ReadOnly )
return ( m_store->mode() == KoStore::Read );
if ( m & IO_WriteOnly )
return ( m_store->mode() == KoStore::Write );
return false;
}
void close() { }
void flush() { }
Offset size() const {
if ( m_store->mode() == KoStore::Read )
return m_store->size();
else
return 0xffffffff;
}
virtual Q_LONG readBlock( char *data, Q_ULONG maxlen ) { return m_store->read(data, maxlen); }
virtual Q_LONG writeBlock( const char *data, Q_ULONG len ) { return m_store->write( data, len ); }
// Not virtual, only to uncover shadow
Q_LONG writeBlock( const QByteArray& data ) { return QIODevice::writeBlock( data ); }
int getch() {
char c[2];
if ( m_store->read(c, 1) == -1)
return -1;
else
return c[0];
}
int putch( int _c ) {
char c[2];
c[0] = _c;
c[1] = 0;
if (m_store->write( c, 1 ) == 1)
return _c;
else
return -1;
}
int ungetch( int ) { return -1; } // unsupported
// See QIODevice
virtual bool at( Offset pos ) { return m_store->at(pos); }
virtual Offset at() const { return m_store->at(); }
virtual bool atEnd() const { return m_store->atEnd(); }
protected:
KoStore * m_store;
};
#endif
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