/*

* Copyright (c) 2005 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: Standard enrty point for a DLL.

*

*/

// INCLUDE FILES

#include <ecom/ecom.h>

#include <ecom/ecomerrorcodes.h>

#include <ecom/ecomresolverparams.h>

#include <ecom/implementationinformation.h>

#include <ecom/publicregistry.h>

#include "eap_vpn_if_resolver.h"

/// Creates an instance of CEapVpnInterfaceResolver

CEapVpnInterfaceResolver* CEapVpnInterfaceResolver::NewL (MPublicRegistry& aRegistry)

	{

	return new(ELeave) CEapVpnInterfaceResolver (aRegistry);

	}

// Destructor.

CEapVpnInterfaceResolver::~CEapVpnInterfaceResolver()

	{

	}

/// Constructor of CEapVpnInterfaceResolver

CEapVpnInterfaceResolver::CEapVpnInterfaceResolver (MPublicRegistry& aRegistry) :

	CResolver (aRegistry)

	{

	}

/// This method determines if it can find an appriate implementation

/// requested

TUid CEapVpnInterfaceResolver::IdentifyImplementationL(TUid aInterfaceUid,

	const TEComResolverParams& aAdditionalParameters) const

	{

	// Aquire a list of implementations for a specific implementation defintion

	RImplInfoArray& implementationsInfo = iRegistry.ListImplementationsL (

		aInterfaceUid);

	TUid found = KNullUid;

	if (implementationsInfo.Count())

		{

		found = Resolve (implementationsInfo, aAdditionalParameters);

		}

	return found;

	}

/// This method iterates through a list of RImplInfoArray() objects to

/// find the most appropriate implementation.

TUid CEapVpnInterfaceResolver::Resolve(const RImplInfoArray& aImplementationsInfo,

	const TEComResolverParams& aAdditionalParameters) const

	{

	const TInt count = aImplementationsInfo.Count();

	for (TInt i = 0; i < count; ++i)

		{

		const CImplementationInformation& impData = *aImplementationsInfo[i];

		// Checks each item in the list to see if theres a match.

		if (Match (impData.DataType(), aAdditionalParameters.DataType(),

			aAdditionalParameters.IsWildcardMatch()))

			{

			// Returns the Uid of the interface

			return impData.ImplementationUid();

			}

		}

	// Nothing found

	return KNullUid;

	}

/// Lists all the implementations of the specified interface definition that

/// satisfy the supplied resolution parameters.

RImplInfoArray* CEapVpnInterfaceResolver::ListAllL(TUid aInterfaceUid,

	const TEComResolverParams& aAdditionalParameters) const

	{

	RImplInfoArray* retList = new(ELeave) RImplInfoArray;

	CleanupStack::PushL (retList);

	RImplInfoArray& fullList = iRegistry.ListImplementationsL (aInterfaceUid);

	const TBool useWildcards = aAdditionalParameters.IsWildcardMatch();

	const TDesC8& matchType = aAdditionalParameters.DataType();

	const TInt numImps = fullList.Count();

	// Iterates through each item in the list to determine the correct

	// interfaces to select.

	for (TInt i = 0; i < numImps; ++i)

		{

		if (Match (fullList[i]->DataType(), matchType, useWildcards))

			{

			// Adds interface to the list.

			User::LeaveIfError (retList->Append (fullList[i]));

			}

		}

	CleanupStack::Pop (retList);

	return retList;

	}

/// The first two parameters is used for comparaison between the two interfaces

/// and the third parameter is used to determine the use of wild cards or not.

TBool CEapVpnInterfaceResolver::Match(const TDesC8& aImplementationType,

	const TDesC8& aMatchType, TBool aUseWildcards) const

	{

	TInt matchPos = KErrNotFound;

	// If wild cards have been set, it will use the correct method to determine

	// the correct interface.

	if (aUseWildcards)

			matchPos = aImplementationType.MatchF (aMatchType);

	else

			matchPos = aImplementationType.CompareF (aMatchType);

	return matchPos != KErrNotFound;

	}