// Copyright (c) 2001-2009 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:

//

#ifndef __CHTMLTOCRTCONVCHARSETCONVERT_H__

#define __CHTMLTOCRTCONVCHARSETCONVERT_H__

#include <f32file.h>

#include <charconv.h>

_LIT(KHtmlToCrtRequestCharset, "content-type: charset?");

class CHtmlToCrtConvBuffer;

class MHtmlToCrtConvResourceFile;

class MConverterUiObserver;

class CHtmlToCrtConvCharsetConvert : public CBase

	{

	public:

		static CHtmlToCrtConvCharsetConvert* NewL(CHtmlToCrtConvBuffer& aBuffer, RFs& aFsSession, CCnvCharacterSetConverter& aCnvCharacterSetConverter, MHtmlToCrtConvResourceFile& aResourceFile, MConverterUiObserver* aObserver=NULL);

		~CHtmlToCrtConvCharsetConvert();

	/**

		@fn		TBool GetCharSetFromPasswordL()

		Intended Usage	:	attempts to get the character set from the mime message header

		@return	TBool ETrue if successful, else EFalse

	 */

		TBool GetCharSetFromPasswordL();

	/**

		@fn		TBool GetCharSetFromMetaTagL()

		Intended Usage	:	attempts to get the character set from the html meta tag

		@return	TBool ETrue if successful, else EFalse

	 */	

		TBool GetCharSetFromMetaTagL();

	/**

		@fn		TBool GetCharSetUsingAutoDetectL()

		Intended Usage	:	attempts to determine the character set by reading a sample of the text

							from the file, and passes this to CCnvCharacterSetConverter::AutoDetectCharacterSetL()

		@return	TBool ETrue if successful, else EFalse

	 */

		TBool GetCharSetUsingAutoDetectL();

		void PrepareForConvertToUnicodeL();

	private:

		CHtmlToCrtConvCharsetConvert(CHtmlToCrtConvBuffer& aBuffer, MConverterUiObserver* aObserver, RFs& aFsSession, CCnvCharacterSetConverter& aCnvCharacterSetConverter, MHtmlToCrtConvResourceFile& aResourceFile);

		void ConstructL();

		TInt FindAndDeleteString(TDes8& aBuffer, const TDesC8& aString);

		void ParseCharsetValue(TDes8& aBuffer);

		void ConvertFromUnicodeL(const TDesC& aUnicode, HBufC8& aNarrow);

	private:

		CCnvCharacterSetConverter& iCnvCharacterSetConverter;

		CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* iArrayOfCharacterSetsAvailable;

		TUint iCharacterSetIdentifier;

		CHtmlToCrtConvBuffer& iBuffer;

		MConverterUiObserver* iObserver;

		MHtmlToCrtConvResourceFile& iResourceFile;

		RFs& iFsSession;

	};

#endif