123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
//+---------------------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1993 - 1998.
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//
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// File: tfilt.hxx
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//
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// Contents: Text filter
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//
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// Classes: CTextIFilter
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//
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// History: 16-Jul-93 AmyA Created
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// 08-Mar-94 KyleP Cleaned up
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//
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//----------------------------------------------------------------------------
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#pragma once
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#include <stdio.h>
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#include <txtifilt.hxx>
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#include <mmstrm.hxx>
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#include <mmistrm.hxx>
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#include <mmscbuf.hxx>
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class CTextIFilterBase;
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//+---------------------------------------------------------------------------
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//
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// Class: CTextIFilter
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//
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// Purpose: Text Filter
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//
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// History: 16-Jul-93 AmyA Created
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//
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//----------------------------------------------------------------------------
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class CTextIFilter : public CTextIFilterBase
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{
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public:
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//
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// Since text files have no language specifier, just use the
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// default locale.
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//
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CTextIFilter( LCID locale = GetSystemDefaultLCID() );
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virtual ~CTextIFilter();
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//
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// From IFilter
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//
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SCODE STDMETHODCALLTYPE Init( ULONG grfFlags,
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ULONG cAttributes,
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FULLPROPSPEC const * aAttributes,
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ULONG * pFlags );
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SCODE STDMETHODCALLTYPE GetChunk( STAT_CHUNK * pStat );
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SCODE STDMETHODCALLTYPE GetText( ULONG * pcwcBuffer,
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WCHAR * awcBuffer );
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SCODE STDMETHODCALLTYPE GetValue( PROPVARIANT ** ppPropValue );
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SCODE STDMETHODCALLTYPE BindRegion( FILTERREGION origPos,
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REFIID riid,
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void ** ppunk );
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//
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// From IPersistFile
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//
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SCODE STDMETHODCALLTYPE GetClassID(CLSID * pClassID);
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SCODE STDMETHODCALLTYPE IsDirty();
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SCODE STDMETHODCALLTYPE Load(LPCWSTR pszFileName, DWORD dwMode);
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SCODE STDMETHODCALLTYPE Save(LPCWSTR pszFileName, BOOL fRemember);
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SCODE STDMETHODCALLTYPE SaveCompleted(LPCWSTR pszFileName);
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SCODE STDMETHODCALLTYPE GetCurFile(LPWSTR * ppszFileName);
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//
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// From IPersistStream
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//
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SCODE STDMETHODCALLTYPE Load( IStream * pStm );
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SCODE STDMETHODCALLTYPE Save( IStream * pStm, BOOL fClearDirty );
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SCODE STDMETHODCALLTYPE GetSizeMax( ULARGE_INTEGER * pcbSize );
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private:
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BOOL IsFileBased() { return (0 != _pwszFileName); }
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BOOL IsStreamBased() { return (0 != _pStream); }
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inline BOOL IsLastCharDBCSLeadByte( BYTE *pbIn, ULONG cChIn );
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BOOL IsDBCSCodePage( ULONG ulCodePage );
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ULONG _idChunk; // Current chunk id
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CMmStream _mmStream; // File-based stream
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CMmIStream _mmIStream; // IStream-based stream
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CMmStreamConsecBuf _mmStreamBuf; // Stream buffer (common)
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ULONG _bytesReadFromChunk; // Bytes read from current chunk
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LPWSTR _pwszFileName; // File being filtered
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IStream * _pStream; // ...or, IStream being filtered
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ULONG _ulCodePage; // Code page (for UniCode translation)
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LCID _locale; // Locale
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BOOL _fUniCode; // TRUE if file is UniCode text
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BOOL _fBigEndian; // TRUE if UniCode stored Big-endian
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BOOL _fContents; // TRUE if content property requested
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BOOL _fNSS; // TRUE if NTFS Structured Storage (not supported)
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BOOL _fDBCSCodePage; // Is _ulCodePage a DBCS code page ?
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BOOL _fDBCSSplitChar; // True, if a DBCS sequences is split across
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// two mappings, False otherwise
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BYTE _abDBCSInput[2]; // Buffer for two byte DBCS sequence
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};
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