/*

 * Copyright (c) 2005-2009 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: 

 *

 */

 /**

  @file

 */

 #include <e32std.h>

 #include <e32def.h>

 #include <asn1enc.h>

 #include <asn1dec.h>

 EXPORT_C CASN1EncEncoding::~CASN1EncEncoding()

 	{

 	delete iContents;

 	}

 // Set arbitrary initial values for tag type and class because they will be 

 // inited in ConstructL().

 EXPORT_C CASN1EncEncoding::CASN1EncEncoding() : 

 	CASN1EncBase(EASN1EOC, EUniversal)

 	{

 	}

 EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewLC(const TDesC8& aEncoding)

 	{

 	CASN1EncEncoding* self = new (ELeave) CASN1EncEncoding;

 	CleanupStack::PushL(self);

 	self->ConstructL(aEncoding);

 	return self;

 	}

 EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewL(const TDesC8& aEncoding)

 	{

 	CASN1EncEncoding* self = NewLC(aEncoding);

 	CleanupStack::Pop(self);

 	return self;

 	}

 EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewLC(const TDesC8& aEncoding, TTagType aType, TASN1Class aClass)

 	{

 	CASN1EncEncoding* self = new (ELeave) CASN1EncEncoding;

 	CleanupStack::PushL(self);

 	self->ConstructL(aEncoding, aType, aClass);

 	return self;		

 	}

 void CASN1EncEncoding::ConstructL(const TDesC8& aEncoding)

 	{

 	// Use decoder to get information about the outer wrapper of the passed 

 	// encoding.

 	TASN1DecGeneric decoder(aEncoding);

 	decoder.InitL();

 	iClass = decoder.Class();

 	iTag = decoder.Tag();

 	// Set this information so that the base class knows how to write 

 	// DER encoding.

 	SetTag(iTag, iClass);

 	// Copy just the contents of the passed encoding.

 	iContents = decoder.GetContentDER().AllocL();

 	// Save this for base class writing functions.

 	iContentsLengthDER = iContents->Length();

 	// This is base class' method which initializes length of length 

 	// encoding for proper DER writing.

 	CalculateLengthLengthDER();

 	}

 void CASN1EncEncoding::ConstructL(const TDesC8& aEncoding, TTagType aType, TASN1Class aClass)

 	{

 	// Use decoder to get information about the outer wrapper of the passed 

 	// encoding.

 	TASN1DecGeneric decoder(aEncoding);

 	decoder.InitL();

 	iClass = aClass;

 	iTag = aType;

 	// Set this information so that the base class knows how to write 

 	// DER encoding.

 	SetTag(aType, aClass);

 	// Copy just the contents of the passed encoding.

 	iContents = decoder.GetContentDER().AllocL();

 	// Save this for base class writing functions.

 	iContentsLengthDER = iContents->Length();

 	// This is base class' method which initializes length of length 

 	// encoding for proper DER writing.

 	CalculateLengthLengthDER();

 	}

 // This method is not called but is necessary because it overrides a 

 // pure virtual function of the base class. The variable is properly 

 // initialized in ConstructL().

 void CASN1EncEncoding::CalculateContentsLengthDER()

 	{

 	iContentsLengthDER = iContents->Length();

 	}

 TBool CASN1EncEncoding::IsConstructed() const

 	{

 	return ETrue;

 	}

 // When this method is called by the base class write helper, the tag 

 // and length are already written.

 void CASN1EncEncoding::WriteContentsDERL(TDes8& aBuf) const

 	{

 	aBuf.Copy(*iContents);

 	}