// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "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:

// e32\debug\crashMonitor\src\scmromdata.cpp

// Core dump server - ROM Data for System Crash

// 

//

/**

 @file

 @internalTechnology

*/

#include <scmdatatypes.h>

namespace Debug

	{

	/**

	 * TRomHeaderData implementation

	 * @internal technology

	 */

	/**

	 * TRomHeaderData constructor

	 */

	TRomHeaderData::TRomHeaderData():

		iId(ESCMRomHeader),

		iVersion(ERomHeaderDataVersion1),

		iMajorVersion(0),

		iMinorVersion(0),

		iBuildNumber(0),

		iTime(0)

		{			

		}

	/**

	 * Writes this classes data to the specified byte stream

	 * @param aWriter byte stream to use

	 * @return void

	 */	

	TInt TRomHeaderData::Serialize(TByteStreamWriter& aWriter)

		{

		TInt startPos = aWriter.CurrentPosition();

		if(iId != ESCMRomHeader)

			{

			CLTRACE("TRomHeaderData::Serialize Corrupt ID");

			return KErrCorrupt;

			}

		// ID saved first 

		aWriter.WriteInt(iId);		 				    // 4		

		aWriter.WriteShort((TUint16) iVersion);			// 2

		if(iVersion == ERomHeaderDataVersion1)

			{

			//ROM time

			aWriter.WriteInt64(iTime);					// 8

			//Now the ROM version

			aWriter.WriteByte(iMajorVersion);				// 1

			aWriter.WriteByte(iMinorVersion);				// 1

			aWriter.WriteShort(iBuildNumber);				// 2			

			}

		else

			{

			CLTRACE("TRomHeaderData::Serialize Unsupported version");

			return KErrCorrupt;

			}

		TInt pos1 = aWriter.CurrentPosition();

		if( pos1 - startPos != GetSize())

			{

			// error between actual size & real size in data

			CLTRACE("TRomHeaderData::Serialize serialization size error");	

			return KErrCorrupt;

			}

		return KErrNone;

		}

	/**

	 * Reads the classes data from the specified byte stream

	 * @param aReader Byte stream to use

	 * @return void

	 */

	TInt TRomHeaderData::Deserialize(TByteStreamReader& aReader)

		{

		TInt startPos = aReader.CurrentPosition();

		iId = (SCMStructId)aReader.ReadInt();					// 4

		if(iId != ESCMRomHeader)

			{

			CLTRACE("TRomHeaderData::Deserialize Corrupt ID read");

			return KErrCorrupt;

			}

		iVersion = (TRomHeaderDataVersion)aReader.ReadShort();			// 2

		if(iVersion == ERomHeaderDataVersion1)

			{			

			//ROM time

			iTime = aReader.ReadInt64();					// 8

			//Now the ROM version

			iMajorVersion = aReader.ReadByte();				// 1

			iMinorVersion = aReader.ReadByte();				// 1

			iBuildNumber = aReader.ReadShort();				// 2

			}

		else

			{

			iId = ESCMLast;	//unrecognised header

			CLTRACE("TRomHeaderData::Deserialize Unsupported version");

			return KErrCorrupt;

			}

		TInt pos1 = aReader.CurrentPosition();

		if( pos1 - startPos != GetSize())

			{

			iId = ESCMLast;	//unrecognised header

			// error between actual size & real size in data

			CLTRACE("TRomHeaderData::Deserialize serialization size error");	

			return KErrCorrupt;

			}

		return KErrNone;

		}

	/**

	 * Returns the externalised size of this class

	 * @return TInt size

	 */

	TInt TRomHeaderData::GetSize() const

		{

		if(iVersion == ERomHeaderDataVersion1)

			{

			return 18;

			}

		else

			{

			CLTRACE("ERomHeaderDataVersion1::GetSize Unsupported version");			

			return KErrNotSupported;		

			}

		}

	}