109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
/*
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* CDE - Common Desktop Environment
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*
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* Copyright (c) 1993-2012, The Open Group. All rights reserved.
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*
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* These libraries and programs are free software; you can
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* redistribute them and/or modify them under the terms of the GNU
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* Lesser General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* These libraries and programs are distributed in the hope that
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* they will be useful, but WITHOUT ANY WARRANTY; without even the
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* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU Lesser General Public License for more
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* details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with these libraries and programs; if not, write
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* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301 USA
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*/
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/* $XConsortium: SearchEng.h /main/2 1996/07/18 16:48:56 drk $ */
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// SearchEngine.h - This serves as a base class for different search engine
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#ifndef SRH_ENG_HEADER
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#define SRH_ENG_HEADER
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#include "FlexBuffer.h"
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template <class Type> class Stack;
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class ComplexTask;
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class Token;
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class NodeData;
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class GraphicsTask;
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class SearchEngine : public ComplexTask {
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protected:
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const FlexBuffer *termsBuffer;
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int f_base;
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int hasTerms;
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int CollectObject;
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NodeData *f_parent;
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GraphicsTask *f_graphics;
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protected:
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virtual void write_start_tag ( const Token & ) = 0;
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virtual void write_end_tag ( const Token & ) = 0;
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virtual void write_terms ( FlexBuffer *termsbuf ) = 0;
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virtual void write_buffer() = 0; /*
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* This corresponds to the
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* write_fulcrum_buffer, write_qsearch_buffer
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*/
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public:
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/* The following 2 are pure virtual, so that each derived class has to
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* redefine them
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*/
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virtual void markup( const Token &) = 0;
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virtual void data ( const char *, size_t ) = 0;
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/* default will be used if not redefined by the derived class
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*/
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virtual int HasSearchTerms() const;
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virtual const FlexBuffer *DumpSearchTerms();
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virtual int GraphicsIsDone() const;
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virtual NodeData *node_data() { return f_parent; }
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protected:
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SearchEngine( NodeData *, const Token &); /* This is not intended to be
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* used as a constructor for
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* instantiation an object
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* but used as a common point
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* of initialization of all the
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* base classes for SearchEng
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*/
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public:
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virtual ~SearchEngine() {}
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};
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inline
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int
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SearchEngine::HasSearchTerms() const
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{
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return( hasTerms );
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}
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//---------------------------------------------------------------------
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inline
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const FlexBuffer *
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SearchEngine::DumpSearchTerms()
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{
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hasTerms = 0;
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return ( termsBuffer );
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}
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#endif
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