148 lines
4.3 KiB
C++
148 lines
4.3 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1991 - 1992.
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//
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// File: DefBreak.hxx
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//
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// Contents: 'Default' Word Breaker
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//
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// Classes: CDefWordBreaker
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//
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// History: 08-May-91 t-WadeR Created
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// 06-Jun-91 t-WadeR changed for input-based pipeline
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// 11-Apr-94 KyleP Sync with spec
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//
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//----------------------------------------------------------------------------
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#pragma once
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const WCHAR ZERO_WIDTH_SPACE = 0x200B; // Unicode zero width space
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//+---------------------------------------------------------------------------
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//
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// Class: CDefWordBreaker
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//
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// Purpose: Break text into phrases and words (default wordbreaker)
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//
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// History: 02-May-91 BartoszM Created.
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// 13-May-91 t-WadeR Changed to use CWordItr.
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// 06-June-91 t-WadeR changed for input-based pipeline
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// 12-Oct-92 AmyA Added Unicode support
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// 18-Nov-92 AmyA Overloaded BreakText
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// 11-Apr-94 KyleP Sync with spec
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//
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//----------------------------------------------------------------------------
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class CDefWordBreaker : public IWordBreaker
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{
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public:
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//
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// From IUnknown
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//
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virtual SCODE STDMETHODCALLTYPE QueryInterface( REFIID riid,
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void **ppvObject );
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virtual ULONG STDMETHODCALLTYPE AddRef();
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virtual ULONG STDMETHODCALLTYPE Release();
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//
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// From IWordBreaker
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//
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virtual SCODE STDMETHODCALLTYPE Init( BOOL fQuery,
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ULONG ulMaxTokenSize,
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BOOL *pfLicense );
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virtual SCODE STDMETHODCALLTYPE BreakText( TEXT_SOURCE *pTextSource,
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IWordSink *pWordSink,
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IPhraseSink *pPhraseSink );
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virtual SCODE STDMETHODCALLTYPE ComposePhrase( WCHAR const *pwcNoun,
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ULONG cwcNoun,
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WCHAR const *pwcModifier,
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ULONG cwcModifier,
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ULONG ulAttachmentType,
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WCHAR *pwcPhrase,
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ULONG *pcwcPhrase );
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virtual SCODE STDMETHODCALLTYPE GetLicenseToUse( const WCHAR **ppwcsLicense );
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//
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// Local methods
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//
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CDefWordBreaker();
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private:
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BOOL IsWordChar (int i) const;
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BOOL ScanChunk ();
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void Tokenize( TEXT_SOURCE *pTextSource, ULONG cwc, IWordSink *pWordSink, ULONG& cwcProcd );
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~CDefWordBreaker();
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enum _EBufSize
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{
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ccCompare = 500
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};
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// These variables describe current chunk
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ULONG _cMapped;
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const WCHAR* _pwcChunk;
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// Leave space for one (dummy) lookahead
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WORD _aCharInfo1[CDefWordBreaker::ccCompare+1];
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WORD _aCharInfo3[CDefWordBreaker::ccCompare+1];
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WCHAR _awcBufZWS[CDefWordBreaker::ccCompare]; // temp buffer for a word having zero-width space
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long _cRefs;
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};
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//+---------------------------------------------------------------------------
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//
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// Class: CDefWordBreakerCF
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//
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// Purpose: Class factory for default word breaker
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//
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// History: 07-Feb-95 SitaramR Created
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//
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//----------------------------------------------------------------------------
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class CDefWordBreakerCF : public IClassFactory
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{
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public:
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CDefWordBreakerCF();
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//
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// From IUnknown
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//
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virtual SCODE STDMETHODCALLTYPE QueryInterface( REFIID riid,
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void ** ppvObject);
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virtual ULONG STDMETHODCALLTYPE AddRef();
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virtual ULONG STDMETHODCALLTYPE Release();
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//
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// From IClassFactory
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//
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virtual SCODE STDMETHODCALLTYPE CreateInstance( IUnknown * pUnkOuter,
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REFIID riid, void * * ppvObject );
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virtual SCODE STDMETHODCALLTYPE LockServer( BOOL fLock );
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protected:
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virtual ~CDefWordBreakerCF();
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long _cRefs;
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};
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