/*

* Copyright (c) 2004 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 Files

#include "FolderScanner.h"

EXPORT_C CFolderScanner::~CFolderScanner()

	{

	iFs.Close();

	delete iTimer;

	delete iFolder;

	delete iScanExt;

	}

void CFolderScanner::ConstructL(  CFolderScanner_if* client

								, const TDesC& folder

								, const TDesC& ext

								, int aScanPeriod)

	{

	iClient = client;

	iTimeout = aScanPeriod;

	iFolder = folder.AllocL();

	iScanExt = ext.AllocL();

	User::LeaveIfError(iFs.Connect());	

	// Check that folder really exist

    TEntry entry;

	TInt err = iFs.Entry(folder, entry);

	// If not found, attempt to create

	if(err == KErrNotFound)

		{

		err = iFs.MkDirAll(*iFolder);

		}

	User::LeaveIfError(err);

	// Create a timer

	iTimer = CSysTimer::NewL(this, 0);

	// we want first callback immediately

	iTimer->MilliSeconds(0);

	}

EXPORT_C CFolderScanner* CFolderScanner::NewL(  CFolderScanner_if* client

								, const TDesC& folder

								, const TDesC& ext

								, int aScanPeriod)

	{

	CFolderScanner* self = new (ELeave)CFolderScanner();

	CleanupStack::PushL(self);

	self->ConstructL(client, folder, ext, aScanPeriod);

	CleanupStack::Pop();

	return self;

	}

void CFolderScanner::Timer(int)

{

    if(ScanOnce() == false)

    {

        iTimer->MilliSeconds(iTimeout);

    }

}

/*

 * Scan folders contents once

 */

inline bool CFolderScanner::ScanOnce()

{

    // Perform scan

    CDir* SMSInList = NULL;

    if (iFs.GetDir(*iFolder,KEntryAttNormal,ESortNone,SMSInList) == KErrNone)

    {

        for(TInt i = 0; i<SMSInList->Count(); i++)

        {

            // if we're given a wild card, we ignore chars before '.'

            // just extension chars?

            const TEntry& entry = (*SMSInList)[i];

            if (!entry.IsDir())

            {

                TPtrC ext(entry.iName.Mid(entry.iName.LocateReverse('.')));

                if (!ext.CompareF(iScanExt->Mid(iScanExt->LocateReverse('.'))))

                {

                    TFileName fileName;

                    fileName.Append(*iFolder);

                    fileName.Append(entry.iName);

                    iClient->FileFound(fileName);

                    delete SMSInList;

                    return true;

                }

            }

        }

        delete SMSInList;

    }

    return false;

}

/*

 * We continue scanning by getting a callback asap

 */

EXPORT_C void CFolderScanner::ContinueScan()

{

    iTimer->MilliSeconds(0);

}