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