// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

//

#include "cmtpfsexclusionmgr.h"

#include <mtp/mmtpdataproviderframework.h>

#include <mtp/mmtpstoragemgr.h>

#include <mtp/cmtpstoragemetadata.h>

#include <mtp/cmtpmetadata.h>

#include <e32hashtab.h>

//[SP-Format-0x3002]

//The full path of DDISCVRY.DPS of PictBridge DP.

_LIT(KFullNameOfPictBridgeDiscovery, "C:\\DATA\\DDISCVRY.DPS");

__FLOG_STMT(_LIT8(KComponent,"CMTPFSExclusionMgr");)

EXPORT_C CMTPFSExclusionMgr::CMTPFSExclusionMgr(MMTPDataProviderFramework& aFramework) :

	iFramework(aFramework), iOrder(CMTPMetaData::CompareTPathHash)

	{

	__FLOG_OPEN(KMTPSubsystem, KComponent);

	}

EXPORT_C CMTPFSExclusionMgr::~CMTPFSExclusionMgr()

	{

	__FLOG_CLOSE;

	}

EXPORT_C TBool CMTPFSExclusionMgr::IsFolderAcceptedL(const TDesC& aPath, TUint32 aStorageId) const

	{

	return IsPathAcceptedL(aPath, aStorageId);

	}

EXPORT_C TBool CMTPFSExclusionMgr::IsFileAcceptedL(const TDesC& aPath, TUint32 /*aStorageId*/) const

	{

	__FLOG(_L8("IsFileAcceptedL - Entry"));	

	TBool accepted = ETrue;

	TParsePtrC parse(aPath);

	if (parse.ExtPresent())

		{

		accepted = IsExtensionValid(parse.Ext().Mid(1));

		__FLOG_VA((_L8("IsExtensionValid = %d"), accepted));

		}

    //[SP-Format-0x3002]

	//They are used to exclude DDISCVRY.DPS from the process of file dp's enumeration.

	if(accepted) 

		{

		TFileName tmp = aPath;

		tmp.UpperCase();

		if( tmp == KFullNameOfPictBridgeDiscovery )

			{

			accepted = EFalse;

			}

		}

	__FLOG_VA((_L8("Exit IsFileAcceptedL = %d"), accepted));

	return accepted;

	}

EXPORT_C TBool CMTPFSExclusionMgr::IsPathAcceptedL(const TDesC& aPath, TUint32 aStorageId) const

	{

	CMTPStorageMetaData* storageMetaData = (CMTPStorageMetaData *)& iFramework.StorageMgr().StorageL(aStorageId);

	TBool accepted = EFalse;	

	if (storageMetaData->Uint(CMTPStorageMetaData::EStorageSystemType) == CMTPStorageMetaData::ESystemTypeDefaultFileSystem)

		{

		// Use Hash code to compare.

		const RArray<CMTPMetaData::TPathHash>& excludedHash = const_cast<CMTPStorageMetaData*>(storageMetaData)->GetHashPathArray();

		// Calculate hash code for aPath, aPath is always a folder because for file, we only need to check extension

		CMTPMetaData::TPathHash PathHash;

		TFileName ex(aPath);

		ex.LowerCase();

        PathHash.iHash = DefaultHash::Des16(ex);

		accepted = ETrue;

		TInt index = KErrNotFound;

		if ( (index = excludedHash.SpecificFindInOrder(PathHash, iOrder, EArrayFindMode_First)) != KErrNotFound )

			{

			// double check if the path need be excluded in case of hash duplicated.

			const CDesCArray& excludedAreas = const_cast<CMTPStorageMetaData*>(storageMetaData)->DesCArray(CMTPStorageMetaData::EExcludedAreas);

			for(TInt i=index; (PathHash.iHash==excludedHash[i].iHash)&&(i<excludedHash.Count()); ++i)

				{

				if ((aPath.MatchF(excludedAreas[excludedHash[i].iIndex])) != KErrNotFound)

					{

					accepted = EFalse;

					break;

					}

				}

			}

		}

	return accepted;

	}