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/* This file is part of the KDE libraries Copyright (C) 2000 David Faure <faure@kde.org> This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License version 2 as published by the Free Software Foundation. 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #ifndef __kfilterbase__h #define __kfilterbase__h #include <qobject.h> #include <qstring.h> class QIODevice; class KFilterBase : public QObject { Q_OBJECT public: KFilterBase(); virtual ~KFilterBase() {} void setDevice( QIODevice * dev ) { m_dev = dev; } QIODevice * device() { return m_dev; } virtual void init() {} virtual void terminate() {} virtual void reset() {} virtual bool readHeader() = 0; virtual void setOutBuffer( char * data, uint maxlen ) = 0; virtual void setInBuffer( char * data, uint size ) = 0; virtual bool inBufferEmpty() const { return inBufferAvailable() == 0; } virtual int inBufferAvailable() const = 0; virtual bool outBufferFull() const { return outBufferAvailable() == 0; } virtual int outBufferAvailable() const = 0; enum Result { OK, END, ERROR }; virtual Result uncompress() = 0; /** * Call this to create the appropriate filter for the file * named @fileName. */ static KFilterBase * findFilterByFileName( const QString & fileName ); /** * Call this to create the appropriate filter for the mimetype * @p mimeType. For instance application/x-gzip. */ static KFilterBase * findFilterByMimeType( const QString & mimeType ); protected: QIODevice * m_dev; }; #endif
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