/*

* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

* J5 charconv character converter

*

*/

#if !defined(__J5_H__)

#define __J5_H__

/**

J5 charconv character converter which supports automatic conversion for the following

character sets:

	SHIFT-JIS (Windows-31J Microsoft code page 932), 

	ISO-2022-JP-1 (JIS-JP) 

	EUC_JP 

	UTF8 

	UCS2

@internalTechnology 

@released 9.1

*/

class CJ5Converter : public CCharacterSetConverterPluginInterface

	{

public:

	enum TJ5Encoding

		{

		EShiftjis = 1,

		EIso2022jp1, 

		EEucjp, 

		EUtf8, 

		EUcs2,

		EUnknown

		};

	virtual const TDesC8& ReplacementForUnconvertibleUnicodeCharacters();

	virtual TInt ConvertFromUnicode(

		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

		const TDesC8& aReplacementForUnconvertibleUnicodeCharacters, 

		TDes8& aForeign, 

		const TDesC16& aUnicode, 

		CCnvCharacterSetConverter::TArrayOfAscendingIndices& aIndicesOfUnconvertibleCharacters);

	virtual TInt ConvertToUnicode(

		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters, 

		TDes16& aUnicode, 

		const TDesC8& aForeign, 

		TInt& aState, 

		TInt& aNumberOfUnconvertibleCharacters, 

		TInt& aIndexOfFirstByteOfFirstUnconvertibleCharacter);

	virtual TBool IsInThisCharacterSetL(

		TBool& aSetToTrue, 

		TInt& aConfidenceLevel, 

		const TDesC8& aSample);

	static CJ5Converter* NewL();

	virtual ~CJ5Converter();

private:

	CJ5Converter();

	void ConstructL();

	enum TDectectCharacterSet

		{

		EIsCharacterSet = 1,

		EIsNotCharacterSet,

		EMaybeCharacterSet

		};

	enum TJ5Encoding DetectEncoding(

		CCnvCharacterSetConverter::TEndianness& aDefaultEndiannessOfForeignCharacters, 

		const TDesC8& aForeign );

	TBool DetectUcs2( const TDesC8& aForeign,

		CCnvCharacterSetConverter::TEndianness& aTEndianness );

	enum TDectectCharacterSet DetectShiftJis( const TDesC8& aForeign,

		TInt &aNumberOfBytesConverted );

	enum TDectectCharacterSet DetectUtf8( const TDesC8& aForeign );

	enum TDectectCharacterSet DetectEucJp( const TDesC8& aForeign,

		TInt &aNumberOfBytesConverted );

	enum TDectectCharacterSet DetectIso2022( const TDesC8& aForeign );

	TInt ConvertEEucjpToUnicode(

		CCnvCharacterSetConverter::TEndianness aDefaultEndiannessOfForeignCharacters,

		TDes16& aUnicode, 

		const TDesC8& aForeign, 

		TInt& aState, 

		TInt& aNumberOfUnconvertibleCharacters, 

		TInt& aIndexOfFirstByteOfFirstUnconvertibleCharacter);

	TInt ConvertUcs2ToUnicode(CCnvCharacterSetConverter::TEndianness& aDefaultEndiannessOfForeignCharacters, 

						   TDes16& aUnicode,		

						   const TDesC8& aForeign,	

						   TInt& aNumberOfUnconvertibleCharacters,   

						   TInt& aIndexOfFirstByteOfFirstUnconvertibleCharacter); 

	};

// EucJp conversion methods	

void DummyConvertToIntermediateBufferInPlace(TDes8&);

void ConvertToJisX0212FromEucJpPackedInPlace(TDes8& aDescriptor);

void ConvertToJisX0208FromEucJpPackedInPlace(TDes8& aDescriptor);

void ConvertToHalfWidthKatakana8FromEucJpPackedInPlace(TDes8& aDescriptor);

TInt NumberOfBytesAbleToConvertToJisRoman(const TDesC8& aDescriptor);

TInt NumberOfBytesAbleToConvertToJisX0208(const TDesC8& aDescriptor);

TInt NumberOfBytesAbleToConvertToHalfWidthKatakana8(const TDesC8& aDescriptor);

TInt NumberOfBytesAbleToConvertToJisX0212(const TDesC8& aDescriptor);

#endif