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gecko-dev/intl/uconv/util/nsUCSupport.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the NPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the NPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsUCvJaSupport_h___
#define nsUCvJaSupport_h___
#include "nsIUnicodeEncoder.h"
#include "nsIUnicodeDecoder.h"
#include "nsIUnicodeEncodeHelper.h"
#include "nsIUnicodeDecodeHelper.h"
#include "nsICharRepresentable.h"
#define ONE_BYTE_TABLE_SIZE 256
#ifdef NS_DEBUG
// {7AFC9F0A-CFE1-44ea-A755-E3B86AB1226E}
#define NS_IBASICDECODER_IID \
{ 0x7afc9f0a, 0xcfe1, 0x44ea, { 0xa7, 0x55, 0xe3, 0xb8, 0x6a, 0xb1, 0x22, 0x6e } }
// {65968A7B-6467-4c4a-B50A-3E0C97A32F07}
#define NS_IBASICENCODER_IID \
{ 0x65968a7b, 0x6467, 0x4c4a, { 0xb5, 0xa, 0x3e, 0xc, 0x97, 0xa3, 0x2f, 0x7 } }
class nsIBasicDecoder : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBASICDECODER_IID);
};
class nsIBasicEncoder : public nsISupports {
public:
NS_DEFINE_STATIC_IID_ACCESSOR(NS_IBASICENCODER_IID);
};
#endif
//----------------------------------------------------------------------
// Class nsBasicDecoderSupport [declaration]
/**
* Support class for the Unicode decoders.
*
* The class source files for this class are in /ucvlatin/nsUCvJaSupport.
* However, because these objects requires non-xpcom subclassing, local copies
* will be made into the other directories using them. Just don't forget to
* keep in sync with the master copy!
*
* This class implements:
* - nsISupports
* - nsIUnicodeDecoder
*
* @created 19/Apr/1999
* @author Catalin Rotaru [CATA]
*/
class nsBasicDecoderSupport : public nsIUnicodeDecoder
#ifdef NS_DEBUG
,public nsIBasicDecoder
#endif
{
NS_DECL_ISUPPORTS
public:
/**
* Class constructor.
*/
nsBasicDecoderSupport();
/**
* Class destructor.
*/
virtual ~nsBasicDecoderSupport();
//--------------------------------------------------------------------
// Interface nsIUnicodeDecoder [declaration]
};
//----------------------------------------------------------------------
// Class nsBufferDecoderSupport [declaration]
/**
* Support class for the Unicode decoders.
*
* This class implements:
* - the buffer management
*
* @created 15/Mar/1999
* @author Catalin Rotaru [CATA]
*/
class nsBufferDecoderSupport : public nsBasicDecoderSupport
{
protected:
/**
* Internal buffer for partial conversions.
*/
char * mBuffer;
PRInt32 mBufferCapacity;
PRInt32 mBufferLength;
PRUint32 mMaxLengthFactor;
/**
* Convert method but *without* the buffer management stuff.
*/
NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength) = 0;
void FillBuffer(const char ** aSrc, PRInt32 aSrcLength);
void DoubleBuffer();
public:
/**
* Class constructor.
*/
nsBufferDecoderSupport(PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsBufferDecoderSupport();
//--------------------------------------------------------------------
// Interface nsIUnicodeDecoder [declaration]
NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength);
NS_IMETHOD Reset();
NS_IMETHOD GetMaxLength(const char *aSrc,
PRInt32 aSrcLength,
PRInt32* aDestLength);
};
//----------------------------------------------------------------------
// Class nsTableDecoderSupport [declaration]
/**
* Support class for a single-table-driven Unicode decoder.
*
* @created 15/Mar/1999
* @author Catalin Rotaru [CATA]
*/
class nsTableDecoderSupport : public nsBufferDecoderSupport
{
public:
/**
* Class constructor.
*/
nsTableDecoderSupport(uShiftTable * aShiftTable,
uMappingTable * aMappingTable, PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsTableDecoderSupport();
protected:
nsIUnicodeDecodeHelper * mHelper; // decoder helper object
uShiftTable * mShiftTable;
uMappingTable * mMappingTable;
//--------------------------------------------------------------------
// Subclassing of nsBufferDecoderSupport class [declaration]
NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength);
};
//----------------------------------------------------------------------
// Class nsMultiTableDecoderSupport [declaration]
/**
* Support class for a multi-table-driven Unicode decoder.
*
* @created 24/Mar/1999
* @author Catalin Rotaru [CATA]
*/
class nsMultiTableDecoderSupport : public nsBufferDecoderSupport
{
public:
/**
* Class constructor.
*/
nsMultiTableDecoderSupport(PRInt32 aTableCount, uRange * aRangeArray,
uShiftTable ** aShiftTable,
uMappingTable ** aMappingTable,
PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsMultiTableDecoderSupport();
protected:
nsIUnicodeDecodeHelper * mHelper; // decoder helper object
PRInt32 mTableCount;
uRange * mRangeArray;
uShiftTable ** mShiftTable;
uMappingTable ** mMappingTable;
//--------------------------------------------------------------------
// Subclassing of nsBufferDecoderSupport class [declaration]
NS_IMETHOD ConvertNoBuff(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength);
};
//----------------------------------------------------------------------
// Class nsBufferDecoderSupport [declaration]
/**
* Support class for a single-byte Unicode decoder.
*
* @created 19/Apr/1999
* @author Catalin Rotaru [CATA]
*/
class nsOneByteDecoderSupport : public nsBasicDecoderSupport
{
public:
/**
* Class constructor.
*/
nsOneByteDecoderSupport(uShiftTable * aShiftTable,
uMappingTable * aMappingTable);
/**
* Class destructor.
*/
virtual ~nsOneByteDecoderSupport();
protected:
nsIUnicodeDecodeHelper * mHelper; // decoder helper object
uShiftTable * mShiftTable;
uMappingTable * mMappingTable;
PRUnichar mFastTable[ONE_BYTE_TABLE_SIZE];
//--------------------------------------------------------------------
// Subclassing of nsBasicDecoderSupport class [declaration]
NS_IMETHOD Convert(const char * aSrc, PRInt32 * aSrcLength,
PRUnichar * aDest, PRInt32 * aDestLength);
NS_IMETHOD GetMaxLength(const char * aSrc, PRInt32 aSrcLength,
PRInt32 * aDestLength);
NS_IMETHOD Reset();
};
//----------------------------------------------------------------------
// Class nsBasicEncoder [declaration]
class nsBasicEncoder : public nsIUnicodeEncoder, public nsICharRepresentable
#ifdef NS_DEBUG
,public nsIBasicEncoder
#endif
{
NS_DECL_ISUPPORTS
public:
/**
* Class constructor.
*/
nsBasicEncoder();
/**
* Class destructor.
*/
virtual ~nsBasicEncoder();
};
//----------------------------------------------------------------------
// Class nsEncoderSupport [declaration]
/**
* Support class for the Unicode encoders.
*
* This class implements:
* - nsISupports
* - the buffer management
* - error handling procedure(s)
*
* @created 17/Feb/1999
* @author Catalin Rotaru [CATA]
*/
class nsEncoderSupport : public nsBasicEncoder
{
protected:
/**
* Internal buffer for partial conversions.
*/
char * mBuffer;
PRInt32 mBufferCapacity;
char * mBufferStart;
char * mBufferEnd;
/**
* Error handling stuff
*/
PRInt32 mErrBehavior;
nsIUnicharEncoder * mErrEncoder;
PRUnichar mErrChar;
PRUint32 mMaxLengthFactor;
/**
* Convert method but *without* the buffer management stuff and *with*
* error handling stuff.
*/
NS_IMETHOD ConvertNoBuff(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength);
/**
* Convert method but *without* the buffer management stuff and *without*
* error handling stuff.
*/
NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength) = 0;
/**
* Finish method but *without* the buffer management stuff.
*/
NS_IMETHOD FinishNoBuff(char * aDest, PRInt32 * aDestLength);
/**
* Copy as much as possible from the internal buffer to the destination.
*/
nsresult FlushBuffer(char ** aDest, const char * aDestEnd);
public:
/**
* Class constructor.
*/
nsEncoderSupport(PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsEncoderSupport();
//--------------------------------------------------------------------
// Interface nsIUnicodeEncoder [declaration]
NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength);
NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
NS_IMETHOD Reset();
NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
nsIUnicharEncoder * aEncoder, PRUnichar aChar);
NS_IMETHOD GetMaxLength(const PRUnichar * aSrc,
PRInt32 aSrcLength,
PRInt32 * aDestLength);
//--------------------------------------------------------------------
// Interface nsICharRepresentable [declaration]
NS_IMETHOD FillInfo(PRUint32 *aInfo) = 0;
};
//----------------------------------------------------------------------
// Class nsTableEncoderSupport [declaration]
/**
* Support class for a single-table-driven Unicode encoder.
*
* @created 17/Feb/1999
* @author Catalin Rotaru [CATA]
*/
class nsTableEncoderSupport : public nsEncoderSupport
{
public:
/**
* Class constructor.
*/
nsTableEncoderSupport(uShiftTable * aShiftTable,
uMappingTable * aMappingTable,
PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsTableEncoderSupport();
NS_IMETHOD FillInfo( PRUint32 *aInfo);
protected:
nsIUnicodeEncodeHelper * mHelper; // encoder helper object
uShiftTable * mShiftTable;
uMappingTable * mMappingTable;
//--------------------------------------------------------------------
// Subclassing of nsEncoderSupport class [declaration]
NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength);
};
//----------------------------------------------------------------------
// Class nsMultiTableEncoderSupport [declaration]
/**
* Support class for a multi-table-driven Unicode encoder.
*
* @created 11/Mar/1999
* @author Catalin Rotaru [CATA]
*/
class nsMultiTableEncoderSupport : public nsEncoderSupport
{
public:
/**
* Class constructor.
*/
nsMultiTableEncoderSupport(PRInt32 aTableCount,
uShiftTable ** aShiftTable,
uMappingTable ** aMappingTable,
PRUint32 aMaxLengthFactor);
/**
* Class destructor.
*/
virtual ~nsMultiTableEncoderSupport();
NS_IMETHOD FillInfo( PRUint32 *aInfo);
protected:
nsIUnicodeEncodeHelper * mHelper; // encoder helper object
PRInt32 mTableCount;
uShiftTable ** mShiftTable;
uMappingTable ** mMappingTable;
//--------------------------------------------------------------------
// Subclassing of nsEncoderSupport class [declaration]
NS_IMETHOD ConvertNoBuffNoErr(const PRUnichar * aSrc, PRInt32 * aSrcLength,
char * aDest, PRInt32 * aDestLength);
};
#endif /* nsUCvJaSupport_h___ */
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