204 lines
5.7 KiB
C++
204 lines
5.7 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Copyright (C) 1996, Microsoft Corporation
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//
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// File: docsum.hxx
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//
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// Contents: document summary helper classes
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//
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// Classes: CDocCharacterization, CSummaryText
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//
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// History: 12-Jan-96 dlee Created
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <tpriq.hxx>
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extern const GUID guidDocSummary;
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extern const GUID guidCharacterization;
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// this is the ole 2 / ms office summary guid its property ids
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#define defGuidDocSummary { 0xf29f85e0, \
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0x4ff9, 0x1068, \
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0xab, 0x91, 0x08, 0x00, \
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0x2b, 0x27, 0xb3, 0xd9 }
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const PROPID propidTitle = 2;
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const PROPID propidSubject = 3;
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const PROPID propidAuthor = 4;
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const PROPID propidKeywords = 5;
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const PROPID propidComments = 6;
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const PROPID propidTemplate = 7;
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const PROPID propidLastAuthor = 8;
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const PROPID propidRevNumber = 9;
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const PROPID propidAppName = 0x12;
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// guid and property ids used by the html filter
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#define defGuidHtmlInformation { 0x70eb7a10, \
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0x55d9, 0x11cf, \
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0xb7, 0x5b, 0x00, 0xaa, \
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0x00, 0x51, 0xfe, 0x20 }
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const PROPID PID_HEADING_1 = 3;
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const PROPID PID_HEADING_2 = 4;
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const PROPID PID_HEADING_3 = 5;
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const PROPID PID_HEADING_4 = 6;
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const PROPID PID_HEADING_5 = 7;
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const PROPID PID_HEADING_6 = 8;
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const unsigned propidCharacterization = 2;
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// constant used to separate parts of a characterization
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#define awcSummarySpace L". "
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const unsigned cwcSummarySpace = 2;
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// maximum amount of raw text used at once
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const ULONG cwcMaxRawUsed = 600;
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// These scores are just guidelines; any value can be used for a
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// summary utility.
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const unsigned scoreInfinity = 30000;
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const unsigned scoreHtmlDescription = 17000;
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const unsigned scoreTitle = 16000;
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const unsigned scoreAbstract = 15000;
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const unsigned scoreSubject = 14000;
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const unsigned scoreKeywords = 13000;
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const unsigned scoreComments = 12000;
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const unsigned scoreHeader1 = 10000;
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const unsigned scoreHeader2 = 9000;
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const unsigned scoreHeader3 = 8000;
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const unsigned scoreHeader4 = 7000;
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const unsigned scoreHeader5 = 6000;
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const unsigned scoreHeader6 = 5000;
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const unsigned scoreRawText = 4000;
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const unsigned scoreOtherProperty = 3000;
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const unsigned scoreIfNothingElse = 10;
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const unsigned scoreIgnore = 0;
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//+-------------------------------------------------------------------------
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//
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// Class: CSummaryText
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//
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// Purpose: Characterizations are built up with these objects
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//
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// History: 12-Jan-96 dlee Created
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//
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//--------------------------------------------------------------------------
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class CSummaryText
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{
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public:
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CSummaryText( WCHAR * pwcText,
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unsigned cwc,
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unsigned utility ) :
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_pwcText( pwcText ),
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_cwcText( cwc ),
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_utility( utility ) {}
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CSummaryText() {}
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BOOL isSame( const WCHAR * pwc, unsigned cwc )
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{ return !wcsncmp( pwc, _pwcText, cwc ); }
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WCHAR * GetText()
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{ return _pwcText; }
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void SetText( WCHAR * pwcText )
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{ _pwcText = pwcText; }
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unsigned GetUtility() { return _utility; }
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// methods needed by priority-queue template
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unsigned GetSize() { return _cwcText; }
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// keep the worst items at the top of the queue
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BOOL IsGreaterThan( CSummaryText & rOther )
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{ return _utility < rOther._utility; }
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private:
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WCHAR * _pwcText;
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unsigned _cwcText;
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unsigned _utility;
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};
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//+-------------------------------------------------------------------------
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//
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// Class: CDocCharacterization
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//
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// Purpose: Builds characterizations
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//
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// History: 12-Jan-96 dlee Created
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//
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//--------------------------------------------------------------------------
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class CDocCharacterization
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{
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public:
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CDocCharacterization( unsigned cwcAtMost );
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~CDocCharacterization();
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void Add( CStorageVariant const & var,
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CFullPropSpec & ps );
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void Add( const WCHAR * pwcSummary,
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unsigned cwcSummary,
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FULLPROPSPEC & ps );
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void Get( WCHAR * awcSummary,
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unsigned & cwcSummary,
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BOOL fUseRawText );
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BOOL HasCharacterization() { return _fIsGenerating; }
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private:
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void Ignore( const WCHAR * pwcIgnore,
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unsigned cwcText );
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BOOL Add( const WCHAR * pwcSummary,
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unsigned cwcSummary,
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unsigned utility,
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BOOL fYankNoise = TRUE );
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void AddRawText( const WCHAR * pwcRawText,
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unsigned cwcText );
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BOOL AddCleanedString( const WCHAR * pwcSummary,
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unsigned cwcSummary,
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unsigned utility,
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BOOL fDeliniate );
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void YankNoise( const WCHAR * pwcIn,
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WCHAR * pwcOut,
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unsigned & cwc );
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void RemoveLowScoringItems( unsigned iLimit );
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BOOL _fIsGenerating;
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unsigned _scoreRawText;
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TPriorityQueue<CSummaryText> _queue;
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enum { cwcMaxIgnoreBuf = 100 };
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WCHAR _awcIgnoreBuf[ cwcMaxIgnoreBuf ];
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unsigned _cwcIgnoreBuf;
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XArray<WCHAR> _awcMetaDescription;
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BOOL _fMetaDescriptionAdded;
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};
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