/*

* 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 Set and Set-of object, 

* as described in X208 Sections 22 and 23 and X209 Sections 16 and 17. The 

* set object can contain an ordered series of zero, one or more other ASN1 

* objects. The set-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 elements contained within set objects is not

* significant.

* The implementation of sets is pretty much the same as that for sequences 

* (indeed it has started from a straight cut'n'paste) but there are some 

* significant differences with regard to ordering of items within the set,

* comparison and retrieval of items.

*

*/

#include "asn1dec.h"

void TASN1DecSet::CleanupSet(TAny* aArray)

	{

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

	array->ResetAndDestroy();

	delete array;

	}

EXPORT_C TASN1DecSet::TASN1DecSet()

	{

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::NewDERLC(const TDesC8& aSource)

// this whole things needs looking at!

	{

	TInt Pos=0;

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

	TCleanupItem cleanupSeq(TASN1DecSet::CleanupSet, ret);

	CleanupStack::PushL(cleanupSeq);

	TASN1DecGeneric gen(aSource);

	gen.InitL();

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

	return ret;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TDesC8& aSource,TInt& aPos)

	{

	TPtrC8 Ptr=aSource.Right(aSource.Length()-aPos);

	return TASN1DecSet::NewDERLC(Ptr);

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TASN1DecGeneric& aSource)

	{

	TInt pos = 0;

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

	TCleanupItem cleanupSeq(TASN1DecSet::CleanupSet, ret);

	CleanupStack::PushL(cleanupSeq);

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

	return ret;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TDesC8& aSource,TInt& aPos, TInt aMin, TInt aMax)

	{

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

	TInt count = res->Count();

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

		{

		User::Leave(KErrArgument);

		}

	return res;

	}

EXPORT_C CArrayPtrFlat<TASN1DecGeneric>* TASN1DecSet::DecodeDERLC(const TASN1DecGeneric& aSource,  TInt aMin, TInt aMax)

	{

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

	TInt count = res->Count();

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

		{

		User::Leave(KErrArgument);

		}

	return res;

	}

void TASN1DecSet::DecodeContentsL(const TDesC8& aSource, TInt& aPos, CArrayPtrFlat<TASN1DecGeneric>& aDest)

	{

	while (aPos < aSource.Length())

		{

		TPtrC8 Ptr=aSource.Right(aSource.Length() - aPos);

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

		CleanupStack::PushL(Decoded);

		Decoded->InitL();

		aDest.AppendL(Decoded);

		aPos+=Decoded->LengthDER();

		CleanupStack::Pop();//i think this should be just 'pop': need to find out

		}

	}