// Copyright (c) 2002-2009 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 __CHTTPHEADERWRITER_H__

#define __CHTTPHEADERWRITER_H__

#include <e32base.h>

#include <stringpool.h>

#include <http/framework/cheadercodec.h>

/**	CHttpHeaderWriter is used by its owning codec to do conversion of header data from

	the generic format (of parts and parameters) to the plain-text representation.

*/

class CHttpHeaderWriter : public CHeaderWriter

	{

protected: // methods

	CHttpHeaderWriter(RStringPool aStringPool);

	/** Helper to DoAcceptL(), DoAcceptCharsetL(), DoAcceptLanguageL() and DoAcceptEncodingL() for comma-separated

	    lists incorporating q-values.

	    @param aHeader The header field being encoded

	    @param aFieldType A string reference to the field type being encoded

	    @param aErrorCode An error value to use when encoding fails

	*/

	void DoGeneralAcceptHeaderL(TInt aNormalHeaderLen, RHeaderField& aHeader, RStringF aFieldType, TInt aErrorCode) const;

	/** Helper to DoConnectionL(), DoContentEncodingL(), DoTransferEncodingL(), etc., which take comma-separated

	    token lists.

	    @param aHeader The header field being encoded

	    @param aErrorCode An error value to use when encoding fails

	*/

	void DoTokenCsvListHeaderL(RHeaderField& aHeader, TInt aErrorCode) const;

	/** Helper to DoUserAgentL(), etc., which take token lists with arbitrary separators

	    @param aHeader The header field being encoded

	    @param aFieldType A string reference to the field type being encoded

	    @param aErrorCode An error value to use when encoding fails

	*/

	void DoTokenListHeaderL(RHeaderField& aHeader, const TDesC8& aSep, TInt aErrorCode) const;

	const CHeaderFieldPart* WriteRawStrFPartL(RHeaderField& aHeader, THeaderFieldPartIter& aIter, TInt aErrorCode) const;

	void EncodeGenericDateL(RHeaderField& aHeader, TInt aErrorCodeToUseOnFailure) const;

	void EncodeGenericNumberHeaderL(RHeaderField& aHeader, TInt aErrorCodeToUseOnFailure) const;

protected: // attributes

	RStringPool iStringPool;

	const TStringTable&    iStringTable;

	};

#endif	// __CHTTPHEADERWRITER_H__