// Copyright (c) 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:

// cimconvertcharconv.h

//

/**

 * @file 

 * @internal

 * @released

 */

#ifndef __CIMCONVERTCHARCONV_H__

#define __CIMCONVERTCHARCONV_H__

/**

 * IMail-specific stream type within an IMail file store for TImEmailTransformingInfo

 * @internalTechnology

 * @released

 */

const TUint KUidMsvCharsetNone				= {0x10003C7F};		// 268450943

/**

 * IMail-specific stream type within an IMail file store for TImEmailTransformingInfo

 * @internalComponent

 * @released

 */

const TUid KUidMsgFileTransformingInfo		= {0x100094A5};		// 268473509

const TUid KUidMsgEmailGeneralCenRep		= {0x10285A25};		// 271079973

/**

 * Default Sending Charset/Encoding Values

 * @internalComponent

 * @released

 */

_LIT8(KMiutUndisplayableChar, "?");

#define KDefaultPlainCharset		KCharacterSetIdentifierIso88591

const TImEncodingType KDefaultMIMEHeaderEncoding	  =	EEncodingTypeBASE64;		// MIME

const TImEncodingType KDefaultMIMEBodyTextEncoding	  =	EEncodingTypeQP;

const TImEncodingType KDefaultMIMEHTMLEncoding		  =	EEncodingTypeBASE64;

const TImEncodingType KDefaultMIMEAttachmentEncoding  =	EEncodingTypeBASE64;

const TImEncodingType KDefaultPlainHeaderEncoding	  =	EEncodingTypeNone;	// Non-MIME or Plain

const TImEncodingType KDefaultPlainBodyTextEncoding	  =	EEncodingTypeNone;

const TImEncodingType KDefaultPlainAttachmentEncoding =	EEncodingTypeUU;

// Wrapper class for CHARCONV.

// 'Our' charset dependant on build, UNICODE or CodePage 1252.

//

class CImConvertCharconv : public CBase

/**

@internalTechnology

@released

*/

	{

public:	

	IMPORT_C static CImConvertCharconv* NewL(CCnvCharacterSetConverter& aConverter, RFs& anFs);

	~CImConvertCharconv();

	// MUST call prepare function first.

	IMPORT_C TInt ConvertToOurCharsetL( const TDesC8& aBufIn, TDes& rBufOut, 

										TInt& rNumUnconvertedChars, 

										TInt& rIndexOfFirstUnconvertedChar);

	IMPORT_C TInt ConvertFromOurCharsetL(const TDesC& aBufIn, TDes8& rBufOut, 

										 TInt& rNumUnconvertedChars,

										 TInt& rIndexOfFirstUnconvertedChar);

	// MUST be called prior to calling above two functions.

	IMPORT_C TInt PrepareToConvertToFromOurCharsetL(const TUint aUid);

	IMPORT_C TUint GetMimeCharsetUidL(const TDesC8& aBufIn) const;

	IMPORT_C HBufC8* GetMimeCharsetTextStringL(const TUint& aUid) const;

	IMPORT_C TUint DefaultCharset() const;

	IMPORT_C TUint SystemDefaultCharset() const;

	static TInt StraightCopy( const TDesC8& aBufIn, TDes& rBufOut);

	static TInt StraightCopy( const TDesC& aBufIn, TDes8& rBufOut);

private:

	void ConstructL();

	CImConvertCharconv(CCnvCharacterSetConverter& aConverter, RFs& anFs);

	TBool CharsetAvailable(const TUint aUid);

	void SetSystemDefaultCharsetL();

	TInt GetSystemCharsetFromCenRepL(TDes8& aMimeCharSet);

	enum TEmailGeneralSettingsCenRepId

		{

		EEmailGeneralCharSetId				= 0x00000000

		};

private:

	CCnvCharacterSetConverter& iConverter;

	CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* iCharsetsAvailable; 

	RFs& iFs;

	TUint iCharsetUid;

	TUint iSystemDefaultCharset;		// Value obtained from .ini file

	TInt  iCharconvState;

	};

#endif //__CIMCONVERTCHARCONV_H__