/*

* Copyright (c) 2006-2009 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: 

* This file contains the implementation of the BMPString ASN1 object.

*

*/

#include <asn1dec.h>

EXPORT_C TASN1DecBMPString::TASN1DecBMPString(void)

	{

	}

EXPORT_C TInt TASN1DecBMPString::CheckValid(const TDesC8& /*aString*/)

	{

	return KErrNone;

	}

/**

Decodes an ASN.1 format BMP string.

@param aSource ASN.1 BMP string to be decoded.

@param aPos Offset in aSource from where decoding starts.

@return On return, a pointer to a buffer containing the decoded BMP string.

*/

EXPORT_C HBufC* TASN1DecBMPString::DecodeDERL(const TDesC8& aSource,TInt& aPos)

	{

	TPtrC8 Source=aSource.Mid(aPos);

	TASN1DecGeneric gen(Source);

	gen.InitL();	

	HBufC* res = DecodeContentsL(gen.GetContentDER());

	return res;

	}

/**

Decodes an ASN.1 format BMP string.

@param aSource ASN.1 BMP string to be decoded.

@return On return, a pointer to a buffer containing the decoded BMP string.

*/

EXPORT_C HBufC* TASN1DecBMPString::DecodeDERL(const TASN1DecGeneric& aSource)

	{

	return DecodeContentsL(aSource.GetContentDER());

	}

HBufC* TASN1DecBMPString::DecodeContentsL(const TDesC8& aSource)

	{

	TInt len = aSource.Length()/2;

	HBufC* res = HBufC::NewL(len);

	const TUint16* data16 = reinterpret_cast<const TUint16 *>(aSource.Ptr()); 

	TPtr pRes = res->Des();

	pRes.Copy(data16, len);

	return res;

	}