sl@0: /*
sl@0: * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file
sl@0: */
sl@0: 
sl@0: #include <e32std.h>
sl@0: #include <e32def.h>
sl@0: #include <asn1enc.h>
sl@0: #include <asn1dec.h>
sl@0: 
sl@0: EXPORT_C CASN1EncEncoding::~CASN1EncEncoding()
sl@0: 	{
sl@0: 	delete iContents;
sl@0: 	}
sl@0: 
sl@0: // Set arbitrary initial values for tag type and class because they will be 
sl@0: // inited in ConstructL().
sl@0: EXPORT_C CASN1EncEncoding::CASN1EncEncoding() : 
sl@0: 	CASN1EncBase(EASN1EOC, EUniversal)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewLC(const TDesC8& aEncoding)
sl@0: 	{
sl@0: 	CASN1EncEncoding* self = new (ELeave) CASN1EncEncoding;
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aEncoding);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewL(const TDesC8& aEncoding)
sl@0: 	{
sl@0: 	CASN1EncEncoding* self = NewLC(aEncoding);
sl@0: 	CleanupStack::Pop(self);
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: EXPORT_C CASN1EncEncoding* CASN1EncEncoding::NewLC(const TDesC8& aEncoding, TTagType aType, TASN1Class aClass)
sl@0: 	{
sl@0: 	CASN1EncEncoding* self = new (ELeave) CASN1EncEncoding;
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL(aEncoding, aType, aClass);
sl@0: 	return self;		
sl@0: 	}
sl@0: 
sl@0: void CASN1EncEncoding::ConstructL(const TDesC8& aEncoding)
sl@0: 	{
sl@0: 	// Use decoder to get information about the outer wrapper of the passed 
sl@0: 	// encoding.
sl@0: 	TASN1DecGeneric decoder(aEncoding);
sl@0: 	decoder.InitL();
sl@0: 	iClass = decoder.Class();
sl@0: 	iTag = decoder.Tag();
sl@0: 	// Set this information so that the base class knows how to write 
sl@0: 	// DER encoding.
sl@0: 	SetTag(iTag, iClass);
sl@0: 	// Copy just the contents of the passed encoding.
sl@0: 	iContents = decoder.GetContentDER().AllocL();
sl@0: 	// Save this for base class writing functions.
sl@0: 	iContentsLengthDER = iContents->Length();
sl@0: 	// This is base class' method which initializes length of length 
sl@0: 	// encoding for proper DER writing.
sl@0: 	CalculateLengthLengthDER();
sl@0: 	}
sl@0: 
sl@0: void CASN1EncEncoding::ConstructL(const TDesC8& aEncoding, TTagType aType, TASN1Class aClass)
sl@0: 	{
sl@0: 	// Use decoder to get information about the outer wrapper of the passed 
sl@0: 	// encoding.
sl@0: 	TASN1DecGeneric decoder(aEncoding);
sl@0: 	decoder.InitL();
sl@0: 	iClass = aClass;
sl@0: 	iTag = aType;
sl@0: 	// Set this information so that the base class knows how to write 
sl@0: 	// DER encoding.
sl@0: 	SetTag(aType, aClass);
sl@0: 	// Copy just the contents of the passed encoding.
sl@0: 	iContents = decoder.GetContentDER().AllocL();
sl@0: 	// Save this for base class writing functions.
sl@0: 	iContentsLengthDER = iContents->Length();
sl@0: 	// This is base class' method which initializes length of length 
sl@0: 	// encoding for proper DER writing.
sl@0: 	CalculateLengthLengthDER();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // This method is not called but is necessary because it overrides a 
sl@0: // pure virtual function of the base class. The variable is properly 
sl@0: // initialized in ConstructL().
sl@0: void CASN1EncEncoding::CalculateContentsLengthDER()
sl@0: 	{
sl@0: 	iContentsLengthDER = iContents->Length();
sl@0: 	}
sl@0: 
sl@0: TBool CASN1EncEncoding::IsConstructed() const
sl@0: 	{
sl@0: 	return ETrue;
sl@0: 	}
sl@0: 
sl@0: // When this method is called by the base class write helper, the tag 
sl@0: // and length are already written.
sl@0: void CASN1EncEncoding::WriteContentsDERL(TDes8& aBuf) const
sl@0: 	{
sl@0: 	aBuf.Copy(*iContents);
sl@0: 	}