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423 lines
11 KiB
C++
423 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsUCvTWSupport_h___
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#define nsUCvTWSupport_h___
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#include "nsIUnicodeEncoder.h"
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#include "nsIUnicodeDecoder.h"
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#include "nsIUnicodeEncodeHelper.h"
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#include "nsIUnicodeDecodeHelper.h"
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#include "nsICharRepresentable.h"
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#define ONE_BYTE_TABLE_SIZE 256
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//----------------------------------------------------------------------
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// Class nsBasicDecoderSupport [declaration]
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/**
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* Support class for the Unicode decoders.
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*
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* The class source files for this class are in /ucvlatin/nsUCvTWSupport.
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* However, because these objects requires non-xpcom subclassing, local copies
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* will be made into the other directories using them. Just don't forget to
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* keep in sync with the master copy!
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*
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* This class implements:
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* - nsISupports
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* - nsIUnicodeDecoder
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*
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* @created 19/Apr/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsBasicDecoderSupport : public nsIUnicodeDecoder
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{
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NS_DECL_ISUPPORTS
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public:
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/**
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* Class constructor.
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*/
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nsBasicDecoderSupport();
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/**
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* Class destructor.
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*/
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virtual ~nsBasicDecoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeDecoder [declaration]
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};
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//----------------------------------------------------------------------
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// Class nsBufferDecoderSupport [declaration]
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/**
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* Support class for the Unicode decoders.
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*
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* This class implements:
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* - the buffer management
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*
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* @created 15/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsBufferDecoderSupport : public nsBasicDecoderSupport
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{
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protected:
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/**
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* Internal buffer for partial conversions.
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*/
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char * mBuffer;
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PRInt32 mBufferCapacity;
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PRInt32 mBufferLength;
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/**
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* Convert method but *without* the buffer management stuff.
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*/
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NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength) = 0;
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void FillBuffer(const char ** aSrc, PRInt32 aSrcLength);
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void DoubleBuffer();
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public:
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/**
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* Class constructor.
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*/
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nsBufferDecoderSupport();
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/**
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* Class destructor.
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*/
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virtual ~nsBufferDecoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeDecoder [declaration]
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NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength);
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NS_IMETHOD Reset();
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};
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//----------------------------------------------------------------------
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// Class nsTableDecoderSupport [declaration]
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/**
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* Support class for a single-table-driven Unicode decoder.
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*
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* @created 15/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsTableDecoderSupport : public nsBufferDecoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsTableDecoderSupport(uShiftTable * aShiftTable,
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uMappingTable * aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsTableDecoderSupport();
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protected:
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nsIUnicodeDecodeHelper * mHelper; // decoder helper object
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uShiftTable * mShiftTable;
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uMappingTable * mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsBufferDecoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsMultiTableDecoderSupport [declaration]
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/**
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* Support class for a multi-table-driven Unicode decoder.
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*
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* @created 24/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsMultiTableDecoderSupport : public nsBufferDecoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsMultiTableDecoderSupport(PRInt32 aTableCount, uRange * aRangeArray,
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uShiftTable ** aShiftTable, uMappingTable ** aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsMultiTableDecoderSupport();
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protected:
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nsIUnicodeDecodeHelper * mHelper; // decoder helper object
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PRInt32 mTableCount;
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uRange * mRangeArray;
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uShiftTable ** mShiftTable;
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uMappingTable ** mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsBufferDecoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsBufferDecoderSupport [declaration]
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/**
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* Support class for a single-byte Unicode decoder.
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*
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* @created 19/Apr/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsOneByteDecoderSupport : public nsBasicDecoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsOneByteDecoderSupport(uShiftTable * aShiftTable,
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uMappingTable * aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsOneByteDecoderSupport();
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protected:
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nsIUnicodeDecodeHelper * mHelper; // decoder helper object
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uShiftTable * mShiftTable;
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uMappingTable * mMappingTable;
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PRUnichar mFastTable[ONE_BYTE_TABLE_SIZE];
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//--------------------------------------------------------------------
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// Subclassing of nsBasicDecoderSupport class [declaration]
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NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
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PRUnichar * aDest, PRInt32 * aDestLength);
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NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
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PRInt32 * aDestLength);
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NS_IMETHOD Reset();
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};
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//----------------------------------------------------------------------
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// Class nsBasicEncoder [declaration]
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class nsBasicEncoder : public nsIUnicodeEncoder, public nsICharRepresentable
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{
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NS_DECL_ISUPPORTS
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public:
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/**
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* Class constructor.
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*/
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nsBasicEncoder();
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/**
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* Class destructor.
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*/
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virtual ~nsBasicEncoder();
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};
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//----------------------------------------------------------------------
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// Class nsEncoderSupport [declaration]
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/**
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* Support class for the Unicode encoders.
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*
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* This class implements:
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* - nsISupports
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* - the buffer management
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* - error handling procedure(s)
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*
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* @created 17/Feb/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsEncoderSupport : public nsBasicEncoder
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{
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protected:
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/**
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* Internal buffer for partial conversions.
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*/
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char * mBuffer;
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PRInt32 mBufferCapacity;
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char * mBufferStart;
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char * mBufferEnd;
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/**
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* Error handling stuff
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*/
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PRInt32 mErrBehavior;
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nsIUnicharEncoder * mErrEncoder;
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PRUnichar mErrChar;
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/**
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* Convert method but *without* the buffer management stuff and *with*
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* error handling stuff.
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*/
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NS_IMETHOD ConvertNoBuff(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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/**
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* Convert method but *without* the buffer management stuff and *without*
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* error handling stuff.
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*/
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NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength) = 0;
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/**
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* Finish method but *without* the buffer management stuff.
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*/
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NS_IMETHOD FinishNoBuff(char * aDest, PRInt32 * aDestLength);
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/**
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* Copy as much as possible from the internal buffer to the destination.
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*/
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nsresult FlushBuffer(char ** aDest, const char * aDestEnd);
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public:
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/**
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* Class constructor.
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*/
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nsEncoderSupport();
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/**
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* Class destructor.
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*/
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virtual ~nsEncoderSupport();
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//--------------------------------------------------------------------
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// Interface nsIUnicodeEncoder [declaration]
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NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
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NS_IMETHOD Reset();
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NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
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nsIUnicharEncoder * aEncoder, PRUnichar aChar);
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//--------------------------------------------------------------------
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// Interface nsICharRepresentable [declaration]
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NS_IMETHOD FillInfo(PRUint32 *aInfo) = 0;
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};
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//----------------------------------------------------------------------
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// Class nsTableEncoderSupport [declaration]
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/**
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* Support class for a single-table-driven Unicode encoder.
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*
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* @created 17/Feb/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsTableEncoderSupport : public nsEncoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsTableEncoderSupport(uShiftTable * aShiftTable,
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uMappingTable * aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsTableEncoderSupport();
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NS_IMETHOD FillInfo( PRUint32 *aInfo);
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protected:
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nsIUnicodeEncodeHelper * mHelper; // encoder helper object
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uShiftTable * mShiftTable;
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uMappingTable * mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsEncoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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};
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//----------------------------------------------------------------------
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// Class nsMultiTableEncoderSupport [declaration]
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/**
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* Support class for a multi-table-driven Unicode encoder.
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*
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* @created 11/Mar/1999
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* @author Catalin Rotaru [CATA]
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*/
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class nsMultiTableEncoderSupport : public nsEncoderSupport
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{
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public:
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/**
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* Class constructor.
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*/
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nsMultiTableEncoderSupport(PRInt32 aTableCount, uShiftTable ** aShiftTable,
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uMappingTable ** aMappingTable);
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/**
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* Class destructor.
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*/
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virtual ~nsMultiTableEncoderSupport();
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NS_IMETHOD FillInfo( PRUint32 *aInfo);
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protected:
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nsIUnicodeEncodeHelper * mHelper; // encoder helper object
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PRInt32 mTableCount;
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uShiftTable ** mShiftTable;
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uMappingTable ** mMappingTable;
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//--------------------------------------------------------------------
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// Subclassing of nsEncoderSupport class [declaration]
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NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
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char * aDest, PRInt32 * aDestLength);
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};
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#endif /* nsUCvTWSupport_h___ */
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