/*

* Copyright (c) 2000-2009 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 directory string ASN1 object

*

*/

#include "X500dec.h"

/*

  This file contains the implementation of the following ASN1 data structures:

	DirectoryString ::= CHOICE {

		  teletexString             TeletexString (SIZE (1..MAX)),

		  printableString           PrintableString (SIZE (1..MAX)),

		  universalString           UniversalString (SIZE (1..MAX)),

		  utf8String              UTF8String (SIZE (1..MAX)),

		  bmpString               BMPString (SIZE(1..MAX))   }

*/

TASN1DecX500DirectoryString::TASN1DecX500DirectoryString(void):

iMaxLength(KMaxTInt)

	{

	}

HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TDesC8& aSource,TInt& aPos, TInt aMaxLength)

	{

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

	TASN1DecGeneric gen(Ptr);

	gen.InitL();

	aPos+=gen.LengthDER();

	HBufC* Object=DecodeContentsL(gen, aMaxLength);

	return Object;

	}

HBufC* TASN1DecX500DirectoryString::DecodeDERL(const TASN1DecGeneric& aSource, TInt aMaxLength)

	{

	return DecodeContentsL(aSource, aMaxLength);

	}

HBufC* TASN1DecX500DirectoryString::DecodeContentsL(const TASN1DecGeneric& aSource, TInt aMaxLength)

	{

	HBufC* res = NULL;

	switch (aSource.Tag())

		{

		case EASN1TeletexString:

			{

			TASN1DecTeletexString tStr;

			res = tStr.DecodeDERL(aSource);

			break;

			}

		case EASN1PrintableString:

			{

			TASN1DecPrintableString pStr;

			res = pStr.DecodeDERL(aSource);

			break;

			}

		case EASN1IA5String:

			{

			TASN1DecIA5String pStr;

			res = pStr.DecodeDERL(aSource);

			break;

			}

		case EASN1UTF8String:

			{

			TASN1DecUTF8String pStr;

			res = pStr.DecodeDERL(aSource);

			break;

			}												

		case EASN1BMPString:

			{

			TASN1DecBMPString pStr;

			res = pStr.DecodeDERL(aSource);

			break;	

			}									

		default:

			{

			User::Leave(KErrNotSupported);

			break;

			}

		}

	if (res->Length() > aMaxLength)

		{

		delete res;

		User::Leave(KErrArgument);

		}

	return res;

	}

void TASN1DecX500DirectoryString::SetMaxLength(TInt aLength)

// perhaps this should have some kind of testing to make sure the current 

// contents are valid...this is not as easy as it might first appear, the 

// contents might be eight or sixteen bits.

	{

	iMaxLength=aLength;

	}