/*

* Copyright (c) 2006-2008 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: 

*     Scanner class used to scan file system by filename extensions.

*

*/

// USER INCLUDES

#include    "msengfileextscanner.h"

#include    "msenguihandler.h"

// ================= MEMBER FUNCTIONS ========================================

// ---------------------------------------------------------------------------

// CMsengFileExtScanner::CMsengFileExtScanner()

//

// C++ default constructor. Can NOT contain any code, that might leave.

// ---------------------------------------------------------------------------

CMsengFileExtScanner::CMsengFileExtScanner(MMsengScannerObserver& aObserver, 

                                           CMsengInfoArray& aScanArray,

                                           RFs& aFsSession)

: CMsengFileScanner(aObserver, aScanArray, aFsSession), iMoveToNextDirectory(ETrue)

    {

    }

// ---------------------------------------------------------------------------

// CMsengFileExtScanner::NewL()

//

// Two-phased constructor

// ---------------------------------------------------------------------------

CMsengFileExtScanner* CMsengFileExtScanner::NewL(MMsengScannerObserver& aObserver, 

                                                 CMsengInfoArray& aScanArray,

                                                 RFs& aFsSession)

    {

    CMsengFileExtScanner* self = 

        new (ELeave) CMsengFileExtScanner(aObserver, aScanArray, aFsSession);

    return self;

    }    

// ---------------------------------------------------------------------------    

// CMsengFileExtScanner::~CMsengFileExtScanner()

//

// Destructor

// --------------------------------------------------------------------------- 

CMsengFileExtScanner::~CMsengFileExtScanner()

    {

    }

// ---------------------------------------------------------------------------

// CMsengFileExtScanner::FindFilesL()

// 

// ---------------------------------------------------------------------------

//

CDir* CMsengFileExtScanner::FindFilesL(const TDesC& aDirectory, TBool& aMoveToNextDirectory)

    {

    // iMoveToNextDirectory is true only when starting to handle the

    // current directory. Reset iCurrentExtensionIndex.

    if(iMoveToNextDirectory)

        {

        iCurrentExtensionIndex = -1;

        iMoveToNextDirectory = EFalse;

#ifdef __SHOW_RDEBUG_PRINT_

		RDebug::Print(_L("Entering directory:"));

		RDebug::Print(_L("%S"), &aDirectory);

#endif // __SHOW_RDEBUG_PRINT_

        }

    // This function performs a search for each file in the directory by extension.

    iCurrentExtensionIndex++;

    const TPtrC pCurrentExtension(InfoArray().Exts()[iCurrentExtensionIndex]);

#ifdef __SHOW_RDEBUG_PRINT_

	RDebug::Print(_L("Searching files with extension %d"), iCurrentExtensionIndex);

#endif // __SHOW_RDEBUG_PRINT_

    // Get a list of results for this directory

    CDir* results = NULL;

    TParse parse;

	TInt error;

	const TInt pathlength = pCurrentExtension.Length() + aDirectory.Length();

	if ( pathlength > KMaxFileName )

	{

	error = KErrNotFound;	

#ifdef __SHOW_RDEBUG_PRINT_

	RDebug::Print(_L("Path too long, files with extension %d do not fit to directory"), 

	    iCurrentExtensionIndex);

#endif // __SHOW_RDEBUG_PRINT_

	}

	else

	{	

	FsSession().Parse(pCurrentExtension, aDirectory, parse);

	error = FsSession().GetDir(parse.FullName(), KEntryAttMaskSupported|KEntryAttAllowUid, 

	    ESortNone, results);

	}

    if (error == KErrNotFound)

        {

        results = NULL;

        }

    // Should we move onto searching the next directory

    // Yes, if this was the last extension.

    const TInt extensionCount = InfoArray().Exts().Count();

    iMoveToNextDirectory = (iCurrentExtensionIndex >= extensionCount-1);

    aMoveToNextDirectory = iMoveToNextDirectory;

    // Return populated (or potentially NULL) list.

    return results;

    }

// ---------------------------------------------------------------------------

// CMsengFileExtScanner::HandleLocatedEntryL()

// 

// 

// ---------------------------------------------------------------------------

//

CMsengFileScanner::TLocationResponse CMsengFileExtScanner::HandleLocatedEntryL(

					const TDesC& aFullFileNameAndPath, const TEntry& aEntry)

    {

    TLocationResponse response = EEntryWasDiscarded;

    const TInt KUidLocation = 2;

    TUid fileUid = aEntry[KUidLocation];

    if ( fileUid == KNullUid )

        {

        // Check whether extension found in special data dir

        TBool addSize( ETrue );

        TInt dataDirCount = InfoArray().DataDirs().Count();

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

            {

            TPtrC dataDirPath = InfoArray().DataDirs().MdcaPoint(i);

            if(aFullFileNameAndPath.Length() >= dataDirPath.Length())

                {

                TFileName currentPath;

                currentPath.Copy(aFullFileNameAndPath.Left(dataDirPath.Length()));

                // Compare whether folder matches

                if(!currentPath.CompareF(dataDirPath))

                    {

                    addSize = EFalse;

                    break;

                    }

                }

            }

        if( addSize )

            {

            // Add size of object

            InfoArray().AddSizeByExtL(iCurrentExtensionIndex,  aEntry.FileSize() );

#ifdef __SHOW_RDEBUG_PRINT_

        	const TInt pathlength = aFullFileNameAndPath.Length();

        	if ( pathlength < KMaxFileName )

        		{	

        		RDebug::Print(_L("File: %S, extension number: %d, size: %d"), 

        		    &aFullFileNameAndPath, iCurrentExtensionIndex,  aEntry.FileSize());

        		}

        	else

        		{

        		RDebug::Print(_L("File: see next line, extension number: %d, size: %d"), 

        		    iCurrentExtensionIndex, aEntry.FileSize() );

        		RDebug::Print(_L("Can not print %d characters long file name"), pathlength );

        		}

#endif // __SHOW_RDEBUG_PRINT_

            // We processed this one

            response = EEntryWasProcessed;

            }

        }

    else

        {

#ifdef __SHOW_RDEBUG_PRINT_

        RDebug::Print(_L("Handling file: %S, file Uid: 0x%x"), 

            &aFullFileNameAndPath, fileUid.iUid);

#endif // __SHOW_RDEBUG_PRINT_

        // Make sure other than native applications are not calculated

        if( iCurrentExtensionIndex == EExtSis || iCurrentExtensionIndex == EExtSisx )

            {

            InfoArray().AddSizeByExtL(iCurrentExtensionIndex, aEntry.FileSize() );

            }

        }

    return response;

    }

//  End of File