// 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:

//

#include "chttpgeneralheadercodec.h"

#include <http/rhttpsession.h>

#include <httpstringconstants.h>

#include "chttpdefaultheadercodec.h"

#include "chttpgeneralheaderwriter.h"

#include "chttpgeneralheaderreader.h"

CHttpGeneralHeaderCodec* CHttpGeneralHeaderCodec::NewL(TAny* aStringPool)

/** 

	Factory constructor.

	@internalComponent

	@param		aStringPool	The current string pool.

	@return		A pointer to a fully initialised object.

	@leave		KErrNoMemory	Not enough memory to create object.

	@leave		CHttpGeneralHeaderCodec::ConstructL

*/

	{

	RStringPool* strPool = static_cast<RStringPool*>(aStringPool);

	CHttpGeneralHeaderCodec* self = new (ELeave) CHttpGeneralHeaderCodec(*strPool);

	CleanupStack::PushL(self);

	self->ConstructL();

	CleanupStack::Pop(self);

	return self;

	}

CHttpGeneralHeaderCodec::~CHttpGeneralHeaderCodec()

/**	

	Destructor.

	@internalComponent

*/

	{

	}

CHttpGeneralHeaderCodec::CHttpGeneralHeaderCodec(RStringPool aStringPool)

: CHeaderCodecPlugin(), iStringPool(aStringPool), iStringTable(RHTTPSession::GetTable())

/**

	Constructor

	@internalComponent

	@param		aStringPool	The current string pool.

*/

	{

	}

void CHttpGeneralHeaderCodec::ConstructL()

/**

	Second phase constructor

	@internalComponent

	@leave		CHeaderCodec::ConstructL

	@leave		CHttpGeneralHeaderWriter::NewL

	@leave		CHttpGeneralHeaderReader::NewL

*/

	{

	// Do second phase construction of the base class

	CHeaderCodec::ConstructL();

	// Create the header writer and reader objects on behalf of the base class

	iWriter = CHttpGeneralHeaderWriter::NewL(iStringPool);

	iReader = CHttpGeneralHeaderReader::NewL(iStringPool);

	}

/*

 *	Methods from CHeaderCodec

 */

TBool CHttpGeneralHeaderCodec::CanEncode(RStringF aHeaderField) const

/**

	Asks if the codec can encode the specified header. The default codec can 

	encode all headers.

	@internalComponent

	@param		aHeaderField	The header to be encoded.

	@return		A value of ETrue if the codec can encode the header or a value 

				of EFalse if not.

*/

	{

	TBool encode = EFalse;

	switch( aHeaderField.Index(iStringTable) )

		{

	case HTTP::ECacheControl:

	case HTTP::EConnection:

	case HTTP::EDate:

	case HTTP::EPragma:

	case HTTP::ETransferEncoding:

	case HTTP::EContentEncoding:

	case HTTP::EContentLanguage:

	case HTTP::EContentLength:

	case HTTP::EContentLocation:

	case HTTP::EContentMD5:

	case HTTP::EContentType:

	case HTTP::EContentDisposition:

	case HTTP::EExpires:

	case HTTP::ELastModified:

	case HTTP::EUpgrade:

		{

		// Can encode these headers

		encode = ETrue;

		} break;

	default:

		// Return default value

		break;

		}

	return encode;

	}

TBool CHttpGeneralHeaderCodec::CanDecode(RStringF aHeaderField) const

/**

	Asks if the codec can decode the specified header. The default codec can 

	decode all headers.

	@internalComponent

	@param		aHeaderField	The header to be decoded.

	@return		A value of ETrue if the codec can decode the header or a value 

				of EFalse if not.

*/

	{

	return CanEncode(aHeaderField);

	}

CHeaderCodec* CHttpGeneralHeaderCodec::FindDelegateCodecL(RStringF /*aHeaderField*/) const

/**

	Asks the codec to find a delegate codec that can deal with the header field.

	The http default codec is the final codec that can be used.

	@internalComponent

	@param		aHeaderField	The header field to be handled.

	@return		A pointer to the http default codec.

	@leave		CHttpDefaultHeaderCodec::NewL

*/

	{

	return CHeaderCodecPlugin::CreateDelegateCodecL(iStringPool);

	}