725 lines
20 KiB
C++
725 lines
20 KiB
C++
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//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1997
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//
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// File: IWBreak.cxx
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//
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// Contents: Thai Word Breaker glue code
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//
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// History: weibz, 10-Nov-1997 created
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//
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//----------------------------------------------------------------------------
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#include <pch.cxx>
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#include "iwbreak.hxx"
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extern long gulcInstances;
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//+---------------------------------------------------------------------------
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//
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// Member: CWordBreaker::CWordBreaker
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//
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// Synopsis: Constructor for the CWordBreaker class.
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//
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// Arguments: [lcid] -- locale id
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//
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//----------------------------------------------------------------------------
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CWordBreaker::CWordBreaker( LCID lcid )
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: _cRefs(1),
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_lcid(lcid)
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{
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InterlockedIncrement( &gulcInstances );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CWordBreaker::~CWordBreaker
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//
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// Synopsis: Destructor for the CWordBreaker class.
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//
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// Notes: All termination/deallocation is done by embedded smart pointers
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//
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//----------------------------------------------------------------------------
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CWordBreaker::~CWordBreaker()
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{
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InterlockedDecrement( &gulcInstances );
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWordBreaker::QueryInterface
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//
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// Synopsis: Rebind to other interface
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//
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// Arguments: [riid] -- IID of new interface
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// [ppvObject] -- New interface * returned here
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//
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// Returns: S_OK if bind succeeded, E_NOINTERFACE if bind failed
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//
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//--------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE
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CWordBreaker::QueryInterface( REFIID riid, void ** ppvObject)
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{
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//
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// Optimize QueryInterface by only checking minimal number of bytes.
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//
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// IID_IUnknown = 00000000-0000-0000-C000-000000000046
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// IID_IWordBreaker = D53552C8-77E3-101A-B552-08002B33B0E6
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// --------
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// |
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// +--- Unique!
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//
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Assert( (IID_IUnknown.Data1 & 0x000000FF) == 0x00 );
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Assert( (IID_IWordBreaker.Data1 & 0x000000FF) == 0xC8 );
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IUnknown *pUnkTemp;
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SCODE sc = S_OK;
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switch( riid.Data1 )
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{
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case 0x00000000:
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if ( memcmp( &IID_IUnknown, &riid, sizeof(riid) ) == 0 )
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pUnkTemp = (IUnknown *)this;
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else
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sc = E_NOINTERFACE;
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break;
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case 0xD53552C8:
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if ( memcmp( &IID_IWordBreaker, &riid, sizeof(riid) ) == 0 )
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pUnkTemp = (IUnknown *)(IWordBreaker *)this;
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else
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sc = E_NOINTERFACE;
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break;
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default:
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pUnkTemp = 0;
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sc = E_NOINTERFACE;
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break;
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}
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if( 0 != pUnkTemp )
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{
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*ppvObject = (void * )pUnkTemp;
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pUnkTemp->AddRef();
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}
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else
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*ppvObject = 0;
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return(sc);
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWordBreaker::AddRef
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//
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// Synopsis: Increments refcount
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//
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//--------------------------------------------------------------------------
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ULONG STDMETHODCALLTYPE
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CWordBreaker::AddRef()
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{
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return InterlockedIncrement( &_cRefs );
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWordBreaker::Release
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//
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// Synopsis: Decrement refcount. Delete if necessary.
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//
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//--------------------------------------------------------------------------
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ULONG STDMETHODCALLTYPE
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CWordBreaker::Release()
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{
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unsigned long uTmp = InterlockedDecrement( &_cRefs );
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if ( 0 == uTmp )
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delete this;
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return(uTmp);
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}
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//+-------------------------------------------------------------------------
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//
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// Method: CWordBreaker::Init
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//
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// Synopsis: Initialize word-breaker
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//
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// Arguments: [fQuery] -- TRUE if query-time
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// [ulMaxTokenSize] -- Maximum size token stored by caller
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// [pfLicense] -- Set to true if use restricted
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//
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// Returns: Status code
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//
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//--------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE
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CWordBreaker::Init(
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BOOL fQuery,
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ULONG ulMaxTokenSize,
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BOOL *pfLicense )
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{
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if ( NULL == pfLicense ) {
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return E_INVALIDARG;
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}
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if (IsBadWritePtr(pfLicense, sizeof(DWORD))) {
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return E_INVALIDARG;
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}
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*pfLicense = TRUE;
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_fQuery = fQuery;
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_ulMaxTokenSize = ulMaxTokenSize;
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return S_OK;
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CWordBreaker::ComposePhrase
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//
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// Synopsis: Convert a noun and a modifier into a phrase.
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//
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// Arguments: [pwcNoun] -- pointer to noun.
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// [cwcNoun] -- count of chars in pwcNoun
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// [pwcModifier] -- pointer to word modifying pwcNoun
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// [cwcModifier] -- count of chars in pwcModifier
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// [ulAttachmentType] -- relationship between pwcNoun &pwcModifier
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE
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CWordBreaker::ComposePhrase(
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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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{
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//
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// Need to code in later
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//
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if ( _fQuery )
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return( E_NOTIMPL );
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else
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return ( WBREAK_E_QUERY_ONLY );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CWordBreaker::GetLicenseToUse
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//
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// Synopsis: Returns a pointer to vendors license information
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//
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// Arguments: [ppwcsLicense] -- ptr to ptr to which license info is returned
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE
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CWordBreaker::GetLicenseToUse(
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const WCHAR **ppwcsLicense )
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{
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static WCHAR const * wcsCopyright = L"Copyright Microsoft, 1991-1998";
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if ( NULL == ppwcsLicense ) {
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return E_INVALIDARG;
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}
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if (IsBadWritePtr(ppwcsLicense, sizeof(DWORD))) {
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return E_INVALIDARG;
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}
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*ppwcsLicense = wcsCopyright;
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return( S_OK );
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}
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//+---------------------------------------------------------------------------
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//
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// Member: CWordBreaker::BreakText
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//
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// Synopsis: Break input stream into words.
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//
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// Arguments: [pTextSource] -- source of Unicode text
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// [pWordSink] -- sink for collecting words
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// [pPhraseSink] -- sink for collecting phrases
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//
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// History: 10-Nov-1997, WeibZ, Created.
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//
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// Notes: Since the input buffer may be greater than MAX_II_BUFFER_LEN
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// we process the buffer in chunks of length MAX_II_BUFFER_LEN.
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//
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//----------------------------------------------------------------------------
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SCODE STDMETHODCALLTYPE CWordBreaker::BreakText( TEXT_SOURCE *pTextSource,
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IWordSink *pWordSink,
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IPhraseSink *pPhraseSink )
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{
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SCODE sc = S_OK;
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ULONG cwc;
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SCRIPT_ITEM *pItems, *pItem_Next, *pItem_org;
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SCRIPT_ANALYSIS *psa;
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PCWSTR pwcInChars;
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INT iItems;
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BOOL bItemProc;
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PCWSTR pwcChars;
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INT cChars;
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HRESULT retUSP;
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if ( NULL == pTextSource ) {
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return E_INVALIDARG;
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}
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if ( NULL == pWordSink )
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{
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// BUGBUG, propagate the null word sink error code
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return sc;
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}
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if ( 0 != pPhraseSink )
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{
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// ignore the phrase sink for now
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// return sc;
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}
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if (pTextSource->iEnd == pTextSource->iCur) {
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return S_OK;
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}
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Assert( pTextSource->iCur < pTextSource->iEnd );
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__try
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{
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do {
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if ( pTextSource->iCur >= pTextSource->iEnd )
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continue;
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cwc = pTextSource->iEnd - pTextSource->iCur;
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pwcInChars = pTextSource->awcBuffer + pTextSource->iCur;
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pItems = (SCRIPT_ITEM *)LocalAlloc(LPTR,sizeof(SCRIPT_ITEM)*(cwc+1));
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if ( !pItems) {
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return E_UNEXPECTED;
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}
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pItem_org = pItems;
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iItems = 0;
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retUSP = ScriptItemize(pwcInChars,cwc,cwc+1, NULL, NULL,
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pItems, &iItems);
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if (retUSP != S_OK) {
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LocalFree(pItem_org);
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return E_UNEXPECTED;
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}
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while ( iItems > 1 ) {
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pItem_Next = pItems + 1;
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pwcChars = pwcInChars + pItems->iCharPos;
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cChars = pItem_Next->iCharPos - pItems->iCharPos;
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bItemProc = ProcessItem(pwcChars,
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cChars,
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pItems,
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FALSE, // no need to keep chars
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pTextSource,
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pWordSink,
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pPhraseSink);
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if ( bItemProc == FALSE ) {
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LocalFree(pItem_org);
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return E_UNEXPECTED;
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}
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pItems++;
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iItems--;
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}
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// special handle for the last item
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if ( iItems == 1 ) {
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pwcChars = pwcInChars + pItems->iCharPos;
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cChars = pTextSource->iEnd - pTextSource->iCur;
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bItemProc = ProcessItem(pwcChars,
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cChars,
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pItems,
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TRUE, // need to keep chars
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pTextSource,
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pWordSink,
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pPhraseSink);
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if ( bItemProc == FALSE ) {
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LocalFree(pItem_org);
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return E_UNEXPECTED;
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}
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}
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if (pItem_org)
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LocalFree(pItem_org);
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} while ( SUCCEEDED(pTextSource->pfnFillTextBuffer(pTextSource)) );
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if ( pTextSource->iCur < pTextSource->iEnd ) {
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cwc = pTextSource->iEnd - pTextSource->iCur;
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pwcInChars = pTextSource->awcBuffer + pTextSource->iCur;
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pItems = (SCRIPT_ITEM *)LocalAlloc(LPTR,sizeof(SCRIPT_ITEM)*(cwc+1));
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if ( !pItems ) {
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return E_UNEXPECTED;
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}
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pItem_org = pItems;
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iItems = 0;
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retUSP = ScriptItemize(pwcInChars,cwc,cwc+1, NULL, NULL,
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pItems, &iItems);
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if (retUSP != S_OK) {
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LocalFree(pItem_org);
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return E_UNEXPECTED;
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}
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while ( iItems > 1 ) {
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pItem_Next = pItems + 1;
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pwcChars = pwcInChars + pItems->iCharPos;
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cChars = pItem_Next->iCharPos - pItems->iCharPos;
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bItemProc = ProcessItem(pwcChars,
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cChars,
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pItems,
|
||
|
|
FALSE, // no need to keep chars
|
||
|
|
pTextSource,
|
||
|
|
pWordSink,
|
||
|
|
pPhraseSink);
|
||
|
|
|
||
|
|
if ( bItemProc == FALSE ) {
|
||
|
|
LocalFree(pItem_org);
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
pItems++;
|
||
|
|
iItems--;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( iItems == 1 ) {
|
||
|
|
|
||
|
|
pwcChars = pwcInChars + pItems->iCharPos;
|
||
|
|
cChars = pTextSource->iEnd - pTextSource->iCur;
|
||
|
|
|
||
|
|
bItemProc = ProcessItem(pwcChars,
|
||
|
|
cChars,
|
||
|
|
pItems,
|
||
|
|
FALSE, // no need to keep chars
|
||
|
|
pTextSource,
|
||
|
|
pWordSink,
|
||
|
|
pPhraseSink);
|
||
|
|
|
||
|
|
if ( bItemProc == FALSE ) {
|
||
|
|
LocalFree(pItem_org);
|
||
|
|
return E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( pItem_org )
|
||
|
|
LocalFree(pItem_org);
|
||
|
|
}
|
||
|
|
|
||
|
|
} __except(1) {
|
||
|
|
|
||
|
|
sc = E_UNEXPECTED;
|
||
|
|
}
|
||
|
|
|
||
|
|
return sc;
|
||
|
|
}
|
||
|
|
|
||
|
|
BOOL CWordBreaker::ProcessItem(
|
||
|
|
PCWSTR pwcChars,
|
||
|
|
INT cChars,
|
||
|
|
SCRIPT_ITEM *pItems,
|
||
|
|
BOOL fKeep,
|
||
|
|
TEXT_SOURCE *pTextSource,
|
||
|
|
IWordSink *pWordSink,
|
||
|
|
IPhraseSink *pPhraseSink )
|
||
|
|
{
|
||
|
|
|
||
|
|
SCRIPT_LOGATTR *psla, *psla_org, *pslatmp;
|
||
|
|
INT iChar,i;
|
||
|
|
INT iWord, iWordStart, iWordLen;
|
||
|
|
PTHAIWORD pThaiWord, pThaiWordTmp;
|
||
|
|
BOOL fLastIsWhiteSpace=FALSE;
|
||
|
|
|
||
|
|
const SCRIPT_PROPERTIES **pScript_Properties;
|
||
|
|
DWORD LangID;
|
||
|
|
WORD iScript;
|
||
|
|
|
||
|
|
HRESULT retUSP;
|
||
|
|
|
||
|
|
ScriptGetProperties(&pScript_Properties, NULL);
|
||
|
|
|
||
|
|
iScript = pItems->a.eScript;
|
||
|
|
|
||
|
|
LangID = (pScript_Properties[iScript])->langid;
|
||
|
|
|
||
|
|
switch (LangID) {
|
||
|
|
|
||
|
|
case LANG_THAI: //Thai script, there are SCRIPT_THAI & SCRIPT_THAI_NUM
|
||
|
|
|
||
|
|
// if (pScript_Properties[iScript].fNeedsWordBreaking == FALSE) {
|
||
|
|
// // this is SCRIPT_THAI_NUM,
|
||
|
|
//
|
||
|
|
// for ( iChar=0; iChar < cChars; iChar++ ) {
|
||
|
|
// pWordSink->PutWord(1,
|
||
|
|
// pwcChars+iChar,
|
||
|
|
// 1,
|
||
|
|
// pTextSource->iCur);
|
||
|
|
// pTextSource->iCur ++;
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// break;
|
||
|
|
//
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
// // Following code is for SCRIPT_THAI
|
||
|
|
|
||
|
|
psla = (SCRIPT_LOGATTR *)LocalAlloc(LPTR,
|
||
|
|
(sizeof(SCRIPT_LOGATTR)+sizeof(THAIWORD))*cChars);
|
||
|
|
psla_org = psla;
|
||
|
|
|
||
|
|
pThaiWord = (PTHAIWORD)&psla[cChars];
|
||
|
|
|
||
|
|
if ( psla == NULL )
|
||
|
|
return FALSE;
|
||
|
|
|
||
|
|
retUSP = ScriptBreak(pwcChars, cChars, &(pItems->a), psla);
|
||
|
|
|
||
|
|
if (retUSP != S_OK) {
|
||
|
|
LocalFree(psla_org);
|
||
|
|
return FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
pThaiWordTmp = pThaiWord;
|
||
|
|
|
||
|
|
|
||
|
|
// check if the last char is a white space.
|
||
|
|
if ( psla[cChars-1].fWhiteSpace )
|
||
|
|
fLastIsWhiteSpace=TRUE;
|
||
|
|
|
||
|
|
|
||
|
|
iWordStart = -1;
|
||
|
|
iWord=0;
|
||
|
|
for (iChar=0; iChar < cChars; iChar++) {
|
||
|
|
if (psla->fWordStop) {
|
||
|
|
if ( iWordStart != -1 ) {
|
||
|
|
|
||
|
|
iWordLen = iChar - iWordStart;
|
||
|
|
if (iWordLen > 0) {
|
||
|
|
pThaiWordTmp->offset = iWordStart;
|
||
|
|
pThaiWordTmp->len = iWordLen;
|
||
|
|
pThaiWordTmp++;
|
||
|
|
iWord++;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
iWordStart = iChar;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if ( psla->fWhiteSpace ) {
|
||
|
|
|
||
|
|
if ( iWordStart != -1 ) {
|
||
|
|
|
||
|
|
iWordLen = iChar - iWordStart;
|
||
|
|
if (iWordLen > 0 ) {
|
||
|
|
pThaiWordTmp->offset = iWordStart;
|
||
|
|
pThaiWordTmp->len = iWordLen;
|
||
|
|
pThaiWordTmp++;
|
||
|
|
iWord++;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
iWordStart = iChar;
|
||
|
|
|
||
|
|
// skip all the consequent white spaces.
|
||
|
|
while ( (psla->fWhiteSpace) && (iChar < cChars) ) {
|
||
|
|
iWordStart = iChar;
|
||
|
|
iChar ++;
|
||
|
|
psla++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( iChar < cChars)
|
||
|
|
iWordStart = iChar;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
psla++;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( !fLastIsWhiteSpace ) {
|
||
|
|
iWordLen = cChars - iWordStart;
|
||
|
|
if ( iWordLen > 0 ) {
|
||
|
|
pThaiWordTmp->offset = iWordStart;
|
||
|
|
pThaiWordTmp->len = iWordLen;
|
||
|
|
iWord++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
// if this is the last item, and the last char is a Thai char,
|
||
|
|
// we will discard the last 4 words and integrate into the next
|
||
|
|
// filled buffer and do again!!!
|
||
|
|
|
||
|
|
if (fKeep && !fLastIsWhiteSpace)
|
||
|
|
iWord = iWord - 4;
|
||
|
|
|
||
|
|
pThaiWordTmp = pThaiWord;
|
||
|
|
for (i=0; i<iWord; i++) {
|
||
|
|
|
||
|
|
iWordLen = pThaiWordTmp->len;
|
||
|
|
iWordStart = pThaiWordTmp->offset;
|
||
|
|
pWordSink->PutWord(iWordLen,
|
||
|
|
pwcChars+iWordStart,
|
||
|
|
iWordLen,
|
||
|
|
pTextSource->iCur+iWordStart);
|
||
|
|
|
||
|
|
pThaiWordTmp++;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if ( fKeep && !fLastIsWhiteSpace)
|
||
|
|
pTextSource->iCur += iWordStart + iWordLen;
|
||
|
|
else
|
||
|
|
pTextSource->iCur += cChars;
|
||
|
|
|
||
|
|
LocalFree(psla_org);
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
case LANG_ENGLISH : // handle English chars
|
||
|
|
|
||
|
|
{
|
||
|
|
|
||
|
|
BYTE ct;
|
||
|
|
BOOL fRomanWord = FALSE;
|
||
|
|
CONST WCHAR *pwcInput;
|
||
|
|
WT Type;
|
||
|
|
|
||
|
|
Type = WT_START;
|
||
|
|
|
||
|
|
pwcInput = pwcChars;
|
||
|
|
iWordStart = 0;
|
||
|
|
|
||
|
|
for (iChar=0; iChar< cChars; iChar++, pwcInput++) {
|
||
|
|
|
||
|
|
ct = GetCharType(*pwcInput);
|
||
|
|
|
||
|
|
if ( (ct != WS) && (ct != PS) )
|
||
|
|
ct = CH;
|
||
|
|
|
||
|
|
|
||
|
|
switch (ct) {
|
||
|
|
case CH :
|
||
|
|
if (!fRomanWord) {
|
||
|
|
iWordStart = iChar;
|
||
|
|
fRomanWord = TRUE;
|
||
|
|
Type = WT_ROMAJI;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case WS :
|
||
|
|
if (fRomanWord) {
|
||
|
|
iWordLen = iChar - iWordStart;
|
||
|
|
pWordSink->PutWord(iWordLen,
|
||
|
|
pwcChars+iWordStart,
|
||
|
|
iWordLen,
|
||
|
|
pTextSource->iCur);
|
||
|
|
|
||
|
|
pTextSource->iCur += iWordLen;
|
||
|
|
fRomanWord = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
Type = WT_WORD_SEP;
|
||
|
|
pTextSource->iCur++;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case PS :
|
||
|
|
if (fRomanWord) {
|
||
|
|
iWordLen = iChar - iWordStart;
|
||
|
|
pWordSink->PutWord(iWordLen,
|
||
|
|
pwcChars+iWordStart,
|
||
|
|
iWordLen,
|
||
|
|
pTextSource->iCur);
|
||
|
|
|
||
|
|
pTextSource->iCur += iWordLen;
|
||
|
|
fRomanWord = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
Type = WT_PHRASE_SEP;
|
||
|
|
pWordSink->PutBreak(WORDREP_BREAK_EOS);
|
||
|
|
pTextSource->iCur++;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ((Type == WT_WORD_SEP) || (Type == WT_PHRASE_SEP))
|
||
|
|
break;
|
||
|
|
|
||
|
|
if ( fKeep )
|
||
|
|
break;
|
||
|
|
|
||
|
|
iWordLen =cChars - iWordStart;
|
||
|
|
pWordSink->PutWord(iWordLen,
|
||
|
|
pwcChars+iWordStart,
|
||
|
|
iWordLen,
|
||
|
|
pTextSource->iCur);
|
||
|
|
|
||
|
|
pTextSource->iCur += iWordLen;
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
default :
|
||
|
|
|
||
|
|
pTextSource->iCur += cChars;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
|
||
|
|
}
|