617 lines
17 KiB
C++
617 lines
17 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1991 - 2000
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//
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// File: KEYMAK.CXX
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//
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// Contents: Key maker
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//
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// Classes: CKeyMaker
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//
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// History: 31-Jan-92 BartoszM Created
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// 24-Apr-95 SitaramR Removed US/Fake stemmer and added
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// Infosoft stemmer
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//
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// Notes: The filtering pipeline is hidden in the Data Repository
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// object which serves as a sink for the filter.
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// The sink for the Data Repository is the Key Repository.
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// The language dependent part of the pipeline
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// is obtained from the Language List object and is called
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// Language Dependent Key Maker. It consists of:
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//
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// Word Breaker
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// Stemmer (optional)
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// Normalizer
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// Noise List
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//
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// Each object serves as a sink for its predecessor,
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// Key Repository is the final sink.
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//
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//----------------------------------------------------------------------------
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#include <pch.cxx>
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#pragma hdrstop
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#include <lang.hxx>
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#include <keymak.hxx>
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#include <noise.hxx>
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#include <norm.hxx>
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#include <stemsink.hxx>
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//+---------------------------------------------------------------------------
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//
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// Member: CKeyMaker::CKeyMaker
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//
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// Synopsis: Constructs a language-dependant key maker object
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//
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// Effects: Creates a noiselist, normalizer and borrows a wordbreaker, stemmer
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//
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// Arguments: [locale] -- language locale
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// [krep] -- key repository to place completed keys in
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// [pPhraseSink] -- sink for collecting phrases
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// [fQuery] -- true if this is during querying
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// [ulFuzzy] -- fuzzy level of query
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//
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// History: 05-June-91 t-WadeR Created.
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// 12-Oct-92 AmyA Added Unicode support
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//
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//----------------------------------------------------------------------------
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CKeyMaker::CKeyMaker( LCID locale,
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PROPID pid,
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PKeyRepository& krep,
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IPhraseSink *pPhraseSink,
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BOOL fQuery,
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ULONG ulFuzzy,
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CLangList & langList )
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: _pPhraseSink(pPhraseSink),
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_fQuery( fQuery ),
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_sLang( locale, pid, &langList, fQuery ? LANG_LOAD_ALL : LANG_LOAD_NO_STEMMER ),
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_lcid( locale ),
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_pid( pid )
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{
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krep.GetSourcePosBuffers (&_pcwcSrcPos, &_pcwcSrcLen );
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CStringTable* noiseTable;
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//
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// Don't remove noise words if we're doing prefix matching. The noise
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// *word* is potentially only a prefix for a non-noise word.
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//
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if (GENERATE_METHOD_PREFIX == ulFuzzy )
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noiseTable = 0;
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else
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noiseTable = _sLang->GetNoiseTable();
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if ( noiseTable != 0 )
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_xNoiseList.Set( new CNoiseList( *noiseTable, krep ) );
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else
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_xNoiseList.Set( new CNoiseListEmpty( krep, ulFuzzy ) );
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_xWordRep.Set( new CNormalizer( _xNoiseList.GetReference() ) );
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// Get Normalizer's buffer length
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_cwcMaxNormBuf = _xWordRep->GetMaxBufferLen();
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// get stemmer (optional)
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if ( ulFuzzy == GENERATE_METHOD_STEMMED )
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{
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IStemmer *pStemmer = _sLang->GetStemmer();
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if ( pStemmer )
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{
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BOOL fCopyright;
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SCODE sc = pStemmer->Init( _cwcMaxNormBuf, &fCopyright );
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if ( FAILED(sc) )
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{
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ciDebugOut(( DEB_ERROR, "IStemmer::Init returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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if ( fCopyright )
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{
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WCHAR const * pLicense;
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sc = pStemmer->GetLicenseToUse( &pLicense );
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if ( SUCCEEDED(sc) )
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{
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ciDebugOut(( DEB_WORDS, "%ws\n", pLicense ));
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}
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else
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{
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ciDebugOut(( DEB_ERROR, "IStemmer::GetLicenseToUse returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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}
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_xWordRep2.Set( _xWordRep.Acquire() );
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_xWordRep.Set( new CStemmerSink( pStemmer, _xWordRep2.GetReference() ) );
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}
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else
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{
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ciDebugOut(( DEB_ERROR,
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"Fuzzy2 query, but no stemmer available for locale 0x%x\n",
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locale ));
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}
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}
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//
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// Initialize word breaker
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//
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_pWBreak = _sLang->GetWordBreaker();
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Win4Assert( _pWBreak );
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BOOL fCopyright;
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SCODE sc = _pWBreak->Init( fQuery, _cwcMaxNormBuf, &fCopyright );
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if ( FAILED(sc) )
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{
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ciDebugOut(( DEB_ERROR, "IWordBreaker::Init returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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if ( fCopyright )
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{
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WCHAR const * pLicense;
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sc = _pWBreak->GetLicenseToUse( &pLicense );
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if ( SUCCEEDED(sc) )
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{
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ciDebugOut(( DEB_WORDS, "%ws\n", pLicense ));
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}
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else
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{
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ciDebugOut(( DEB_ERROR, "IWordBreaker::GetLicenseToUse returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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}
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} //CKeyMaker
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//+---------------------------------------------------------------------------
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//
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// Member: CKeyMaker::CKeyMaker
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//
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// Synopsis: Constructs key maker for noise word list initialization.
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//
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// Arguments: [pWBreak] -- word breaker
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// [Noise] -- noise word list
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//
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// History: 05-June-91 t-WadeR Created.
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// 12-Oct-92 AmyA Added Unicode support
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//
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//----------------------------------------------------------------------------
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CKeyMaker::CKeyMaker( IWordBreaker * pWBreak, PNoiseList & Noise )
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: _pWBreak( pWBreak ),
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_pPhraseSink(0),
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_fQuery(FALSE)
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{
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_xWordRep.Set( new CNormalizer( Noise ) );
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// Get Normalizer's buffer length
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_cwcMaxNormBuf = _xWordRep->GetMaxBufferLen();
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_pcwcSrcPos = 0; // We don't use them!
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_pcwcSrcLen = 0;
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//
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// Initialize word breaker
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//
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Win4Assert( _pWBreak );
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BOOL fCopyright;
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SCODE sc = _pWBreak->Init( FALSE, _cwcMaxNormBuf, &fCopyright );
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if ( FAILED(sc) )
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{
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ciDebugOut(( DEB_ERROR, "IWordBreaker::Init returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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if ( fCopyright )
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{
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WCHAR const * pLicense;
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sc = _pWBreak->GetLicenseToUse( &pLicense );
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if ( SUCCEEDED(sc) )
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{
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ciDebugOut(( DEB_WORDS, "%ws\n", pLicense ));
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}
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else
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{
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ciDebugOut(( DEB_ERROR, "IWordBreaker::GetLicenseToUse returned 0x%x\n", sc ));
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THROW( CException( sc ) );
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}
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}
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} //CKeyMaker
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//+---------------------------------------------------------------------------
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//
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// Member: CKeyMaker::~CKeyMaker
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//
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// Synopsis: destroys a key maker object
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//
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// History: 05-June-91 t-WadeR Created.
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//
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//----------------------------------------------------------------------------
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CKeyMaker::~CKeyMaker()
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{
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}
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//
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// The following are needed to make midl happy. There are no other interfaces
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// to bind to. Inheritance from IUnknown is unnecessary.
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//
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SCODE STDMETHODCALLTYPE CKeyMaker::QueryInterface(REFIID riid, void * * ppvObject)
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{
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*ppvObject = 0;
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return( E_NOTIMPL );
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}
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ULONG STDMETHODCALLTYPE CKeyMaker::AddRef()
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{
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return( 1 );
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}
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ULONG STDMETHODCALLTYPE CKeyMaker::Release()
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{
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return( 1 );
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CKeyMaker::PutWord
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//
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// Synopsis: Store word in word repository
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//
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// Arguments: [cwc] -- Count of characters in [pwcInBuf]
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// [pwcInBuf] -- Word
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// [cwcSrcLen] -- count of characters in pTextSource buffer (see IWordBreaker::BreakText)
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// [cwcSrcPos] -- position of word in pTextSource buffer
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//
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// History: 19-Apr-1994 KyleP Created
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//
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//--------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CKeyMaker::PutWord( ULONG cwc,
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WCHAR const *pwcInBuf,
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ULONG cwcSrcLen,
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ULONG cwcSrcPos )
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{
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SCODE sc = S_OK;
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// validate PutWord call
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if ( !_altWordsEnforcer.IsPutWordOk() )
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{
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Win4Assert( !"CKeyMaker::PutWord - invalid state" );
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ciDebugOut(( DEB_ITRACE, "PutWord: %.*ws\n", cwc, pwcInBuf ));
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return E_FAIL;
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}
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CTranslateSystemExceptions translate;
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TRY
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{
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if ( cwc > _cwcMaxNormBuf )
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{
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sc = LANGUAGE_S_LARGE_WORD;
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cwc = _cwcMaxNormBuf;
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}
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if ( cwc > 0 )
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{
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#if CIDBG == 1
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if ( ciInfoLevel & DEB_WORDS )
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{
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//
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// Check for 'printable' characters.
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//
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BOOL fOk = TRUE;
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for ( unsigned i = 0; i < cwc; i++ )
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{
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if ( pwcInBuf[i] > 0xFF )
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{
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fOk = FALSE;
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break;
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}
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}
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if ( fOk )
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ciDebugOut(( DEB_WORDS,
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"PutWord: \"%.*ws\" Occ = %d cwcSrcLen = %d, cwcSrcPos = %d\n",
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cwc, pwcInBuf, _xWordRep->GetOccurrence(), cwcSrcLen, cwcSrcPos ));
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else
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{
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ciDebugOut(( DEB_WORDS, "PutWord:" ));
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for ( i = 0; i < cwc; i++ )
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ciDebugOut(( DEB_WORDS | DEB_NOCOMPNAME, " %04X", pwcInBuf[i] ));
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ciDebugOut(( DEB_WORDS | DEB_NOCOMPNAME,
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" Occ = %d cwcSrcLen = %d, cwcSrcPos = %d\n",
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_xWordRep->GetOccurrence(), cwcSrcLen, cwcSrcPos ));
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}
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}
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#endif // CIDBG
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//
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// No internal call to PutAltWord for performance reasons.
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//
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if (0 != _pcwcSrcPos)
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{
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Win4Assert ( 0 != _pcwcSrcLen );
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*_pcwcSrcLen = cwcSrcLen;
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*_pcwcSrcPos = cwcSrcPos;
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}
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_xWordRep->ProcessWord( pwcInBuf, cwc );
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}
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}
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CATCH( CException, e )
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{
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sc = e.GetErrorCode();
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}
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END_CATCH;
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return sc;
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} //PutWord
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//+-------------------------------------------------------------------------
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//
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// Method: CKeyMaker::PutAltWord
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//
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// Synopsis: Store alternate word in word repository.
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//
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// Effects: Identical to PutWord except occurrence count is not
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// incremented.
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//
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// Arguments: [cwc] -- Count of characters in [pwcInBuf]
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// [pwcInBuf] -- Word
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// [cwcSrcLen] -- count of characters in pTextSource buffer (see IWordBreaker::BreakText)
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// [cwcSrcPos] -- position of word in pTextSource buffer
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//
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// History: 19-Apr-1994 KyleP Created
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//
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//--------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CKeyMaker::PutAltWord( ULONG cwc,
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WCHAR const *pwcInBuf,
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ULONG cwcSrcLen,
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ULONG cwcSrcPos )
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{
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SCODE sc = S_OK;
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// validate PutWord call
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if ( !_altWordsEnforcer.IsPutAltWordOk() )
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{
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|
|
Win4Assert( !"CKeyMaker::PutAltWord - invalid state" );
|
||
|
|
ciDebugOut(( DEB_ITRACE, "PutAltWord: %.*ws\n", cwc, pwcInBuf ));
|
||
|
|
|
||
|
|
return E_FAIL;
|
||
|
|
}
|
||
|
|
|
||
|
|
CTranslateSystemExceptions translate;
|
||
|
|
|
||
|
|
TRY
|
||
|
|
{
|
||
|
|
//
|
||
|
|
// What is to be done if two large, alternate words end up with the
|
||
|
|
// same (truncated) prefix after truncation ?
|
||
|
|
// This is fixed in Babylon and isn't a problem here.
|
||
|
|
//
|
||
|
|
if ( cwc > _cwcMaxNormBuf )
|
||
|
|
{
|
||
|
|
sc = LANGUAGE_S_LARGE_WORD;
|
||
|
|
cwc = _cwcMaxNormBuf;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( cwc > 0 )
|
||
|
|
{
|
||
|
|
ciDebugOut(( DEB_WORDS,
|
||
|
|
"PutAltWord: \"%.*ws\" Occ = %d cwcSrcLen = %d, cwcSrcPos = %d\n",
|
||
|
|
cwc, pwcInBuf, _xWordRep->GetOccurrence(), cwcSrcLen, cwcSrcPos ));
|
||
|
|
|
||
|
|
if (0 != _pcwcSrcPos)
|
||
|
|
{
|
||
|
|
Win4Assert ( 0 != _pcwcSrcLen );
|
||
|
|
*_pcwcSrcLen = cwcSrcLen;
|
||
|
|
*_pcwcSrcPos = cwcSrcPos;
|
||
|
|
}
|
||
|
|
|
||
|
|
_xWordRep->ProcessAltWord( pwcInBuf, cwc );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
CATCH( CException, e )
|
||
|
|
{
|
||
|
|
sc = e.GetErrorCode();
|
||
|
|
}
|
||
|
|
END_CATCH;
|
||
|
|
|
||
|
|
return sc;
|
||
|
|
} //PutAltWord
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CKeyMaker::StartAltPhrase
|
||
|
|
//
|
||
|
|
// Synopsis: Pass on StartAltPhrase to word repository
|
||
|
|
//
|
||
|
|
// History: 24-Apr-1994 KyleP Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
SCODE STDMETHODCALLTYPE CKeyMaker::StartAltPhrase()
|
||
|
|
{
|
||
|
|
SCODE sc = S_OK;
|
||
|
|
|
||
|
|
CTranslateSystemExceptions translate;
|
||
|
|
|
||
|
|
TRY
|
||
|
|
{
|
||
|
|
if ( _fQuery )
|
||
|
|
{
|
||
|
|
// validate StartAltPhrase call
|
||
|
|
if ( !_altWordsEnforcer.IsStartAltPhraseOk() || !_altPhrasesEnforcer.IsStartAltPhraseOk() )
|
||
|
|
{
|
||
|
|
Win4Assert( !"CKeyMaker::StartAltPhrase - invalid state" );
|
||
|
|
|
||
|
|
THROW( CException( E_FAIL ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
_xWordRep->StartAltPhrase();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
sc = WBREAK_E_QUERY_ONLY;
|
||
|
|
}
|
||
|
|
CATCH( CException, e )
|
||
|
|
{
|
||
|
|
sc = e.GetErrorCode();
|
||
|
|
}
|
||
|
|
END_CATCH;
|
||
|
|
|
||
|
|
return sc;
|
||
|
|
} //StartAltPhrase
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CKeyMaker::EndAltPhrase
|
||
|
|
//
|
||
|
|
// Synopsis: Pass on EndAltPhrase to word repository
|
||
|
|
//
|
||
|
|
// History: 24-Apr-1994 KyleP Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
SCODE STDMETHODCALLTYPE CKeyMaker::EndAltPhrase()
|
||
|
|
{
|
||
|
|
SCODE sc = S_OK;
|
||
|
|
|
||
|
|
CTranslateSystemExceptions translate;
|
||
|
|
|
||
|
|
TRY
|
||
|
|
{
|
||
|
|
if ( _fQuery )
|
||
|
|
{
|
||
|
|
// validate EndAltPhrase call
|
||
|
|
if ( !_altWordsEnforcer.IsEndAltPhraseOk() || !_altPhrasesEnforcer.IsEndAltPhraseOk() )
|
||
|
|
{
|
||
|
|
Win4Assert( !"CKeyMaker::EndAltPhrase - invalid state" );
|
||
|
|
|
||
|
|
THROW( CException( E_FAIL ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
_xWordRep->EndAltPhrase();
|
||
|
|
}
|
||
|
|
else
|
||
|
|
sc = WBREAK_E_QUERY_ONLY;
|
||
|
|
}
|
||
|
|
CATCH( CException, e )
|
||
|
|
{
|
||
|
|
sc = e.GetErrorCode();
|
||
|
|
}
|
||
|
|
END_CATCH;
|
||
|
|
|
||
|
|
return sc;
|
||
|
|
} //EndAltPhrase
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CKeyMaker::PutBreak
|
||
|
|
//
|
||
|
|
// Synopsis: Increment the occurrence count appropriately
|
||
|
|
//
|
||
|
|
// History: 24-Apr-1994 KyleP Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
SCODE STDMETHODCALLTYPE CKeyMaker::PutBreak( WORDREP_BREAK_TYPE breakType )
|
||
|
|
{
|
||
|
|
// We are modeling PutBreak by a skip of the appropriate number of noise words
|
||
|
|
|
||
|
|
switch ( breakType )
|
||
|
|
{
|
||
|
|
case WORDREP_BREAK_EOW:
|
||
|
|
_xWordRep->SkipNoiseWords( 1 );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WORDREP_BREAK_EOS:
|
||
|
|
_xWordRep->SkipNoiseWords( 8 );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WORDREP_BREAK_EOP:
|
||
|
|
_xWordRep->SkipNoiseWords( 128 );
|
||
|
|
break;
|
||
|
|
|
||
|
|
case WORDREP_BREAK_EOC:
|
||
|
|
_xWordRep->SkipNoiseWords( 1024 );
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
ciDebugOut(( DEB_ERROR,
|
||
|
|
"CKeyMaker::PutBreak -- Bad break type %d\n",
|
||
|
|
breakType ));
|
||
|
|
return( E_FAIL );
|
||
|
|
}
|
||
|
|
|
||
|
|
return( S_OK );
|
||
|
|
} //PutBreak
|
||
|
|
|
||
|
|
//+-------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Method: CKeyMaker::Supports
|
||
|
|
//
|
||
|
|
// Synopsis: Checks if the pid/lang are supported by the language object
|
||
|
|
//
|
||
|
|
// Arguments: [pid] -- The property ID
|
||
|
|
// [lcid] -- The locale
|
||
|
|
//
|
||
|
|
// Returns: TRUE if it is supported
|
||
|
|
//
|
||
|
|
// History: 24-Apr-1994 KyleP Created
|
||
|
|
//
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
BOOL CKeyMaker::Supports( PROPID pid, LCID lcid )
|
||
|
|
{
|
||
|
|
if ( (lcid == _lcid) && (pid == _pid) )
|
||
|
|
return TRUE;
|
||
|
|
else
|
||
|
|
return _sLang.Supports( pid, lcid );
|
||
|
|
} //Supports
|
||
|
|
|
||
|
|
//+---------------------------------------------------------------------------
|
||
|
|
//
|
||
|
|
// Member: CKeyMaker::NormalizeWStr - Public
|
||
|
|
//
|
||
|
|
// Synopsis: Normalizes a UniCode string
|
||
|
|
//
|
||
|
|
// Arguments: [pwcInBuf] -- input buffer
|
||
|
|
// [cwcInBuf] -- count of chars in pwcInBuf
|
||
|
|
// [pbOutBuf] -- output buffer.
|
||
|
|
// [pcbOutBuf] - pointer to output count of bytes.
|
||
|
|
//
|
||
|
|
// History: 10-Feb-2000 KitmanH Created
|
||
|
|
//
|
||
|
|
//----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
void CKeyMaker::NormalizeWStr( WCHAR const *pwcInBuf,
|
||
|
|
ULONG cwcInBuf,
|
||
|
|
BYTE *pbOutBuf,
|
||
|
|
unsigned *pcbOutBuf )
|
||
|
|
{
|
||
|
|
_xWordRep->NormalizeWStr( pwcInBuf,
|
||
|
|
cwcInBuf,
|
||
|
|
pbOutBuf,
|
||
|
|
pcbOutBuf );
|
||
|
|
}
|