/*

* Copyright (c) 1998-2009 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 ASN1 Sequence and Sequence-of 

* object, as described in X208 Sections 20 and 21 and X209 Sections 14 and 

* 15. The sequence object can contain an ordered series of zero, one or more

* other ASN1 objects. The sequence-of object contains zero, one or more of 

* the objects described in its definition. The data encodings of both these

* objects is identical. The ordering of the objects contained within the 

* sequence is defined outside the scope of this object, normally this would

* be handled by an object deriving from this object but it may be handled

* somewhere else. 

*

*/

#include "asn1dec.h"

void TASN1DecSequence::CleanupSequence(TAny* aArray)

	{

	CArrayPtrFlat<TASN1DecGeneric>* array = REINTERPRET_CAST(CArrayPtrFlat<TASN1DecGeneric>*, aArray);

	array->ResetAndDestroy();

	delete array;

	}

EXPORT_C TASN1DecSequence::TASN1DecSequence()

	{

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TDesC8& aSource,TInt& aPos)

	{

	CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1);

	TCleanupItem cleanupSeq(TASN1DecSequence::CleanupSequence, ret);

	CleanupStack::PushL(cleanupSeq);

	TASN1DecGeneric gen(aSource.Right(aSource.Length() - aPos));

	gen.InitL();

	aPos += gen.LengthDER();

	DecodeContentsL(gen.GetContentDER(), *ret);

	return ret;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TASN1DecGeneric& aSource)

	{

	CArrayPtrFlat<TASN1DecGeneric>* ret = new(ELeave) CArrayPtrFlat<TASN1DecGeneric> (1);

	TCleanupItem cleanupSeq(TASN1DecSequence::CleanupSequence, ret);

	CleanupStack::PushL(cleanupSeq);

	DecodeContentsL(aSource.GetContentDER(), *ret);

	return ret;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax)

	{

	CArrayPtrFlat<TASN1DecGeneric>* ret = DecodeDERLC(aSource, aPos);

	TInt count = ret->Count();

	if ((count < aMin) || (count > aMax))

		{

		User::Leave(KErrArgument);

		}

	return ret;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSequence::DecodeDERLC(const TASN1DecGeneric& aSource, TInt aMin, TInt aMax)

	{

	CArrayPtrFlat<TASN1DecGeneric>* ret = DecodeDERLC(aSource);

	TInt count = ret->Count();

	if ((count < aMin) || (count > aMax))

		{

		User::Leave(KErrArgument);

		}

	return ret;

	}

void TASN1DecSequence::DecodeContentsL(const TDesC8& aSource, CArrayPtrFlat<TASN1DecGeneric>& aDest)

	{

	TInt pos = 0;

	while (pos < aSource.Length())

		{

		TPtrC8 p(aSource.Right(aSource.Length() - pos));

		TASN1DecGeneric* Decoded = new(ELeave) TASN1DecGeneric(p);

		CleanupStack::PushL(Decoded);

		Decoded->InitL();

		aDest.AppendL(Decoded);

		pos+=Decoded->LengthDER();

		CleanupStack::Pop();

		}

	}