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/* This file is part of Strigi Desktop Search
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* Copyright (C) 2006 Jos van den Oever <jos@vandenoever.info>
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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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#ifndef STRIGI_STREAMTHROUGHANALYZER_H
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#define STRIGI_STREAMTHROUGHANALYZER_H
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#include "streamanalyzerfactory.h"
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template <class T> class StreamBase;
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typedef StreamBase<char> InputStream;
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* This class defines an interface for analyzing streams.
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* This interface is not yet complete, it lacks good functions for retrieving
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* the results in other ways than just printing them.
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class STREAMANALYZER_EXPORT StreamThroughAnalyzer {
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virtual ~StreamThroughAnalyzer() {}
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* Passes a pointer to the AnalysisResult to be used for
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virtual void setIndexable(Strigi::AnalysisResult*) = 0;
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* This function sets up the analyzer for handling a stream.
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* The stream \p in is used in constructing a new internal
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* inputstream that is returned by this function. Every time
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* a read call is performed on this class, the data read
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* is used in the analysis before being passed on to the
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* caller. The InputStream pointer maybe 0 for special filetypes that have
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* no content, so any implementation must always check the pointer before
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* reading from the stream.
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* The stream @p in should be returned and it should be at position 0.
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* This means reading from the stream is only allowed when the stream is reset to position 0.
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virtual InputStream *connectInputStream(InputStream *in) = 0;
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* Signals to the caller whether this analyzer is finished
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* with the current stream.
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virtual bool isReadyWithStream() = 0;
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* Return the name of this throughanalyzer.
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virtual const char* name() const = 0;
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* The factory class for the StreamThroughAnalyzer
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class STREAMANALYZER_EXPORT StreamThroughAnalyzerFactory
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: public StreamAnalyzerFactory {
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virtual StreamThroughAnalyzer* newInstance() const = 0;
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} // end namespace Strigi