/*

* Copyright (c) 2002, 2006 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 <f32file.h>

#include <s32mem.h>

#include <implementationproxy.h>

#include "GameRecognizer.h"

//

// CGameRecognizer

//

CGameRecognizer::CGameRecognizer ()

:CApaDataRecognizerType(KUidMimeGameDataRecognizerValue, CApaDataRecognizerType::EHigh)

    {

    iCountDataTypes= KSupportedGameDataMimetypes;

    }

TUint CGameRecognizer::PreferredBufSize()

    {

    // no buffer recognition yet

    return 128;

    }

TDataType CGameRecognizer::SupportedDataTypeL(TInt aIndex) const

    {

    __ASSERT_DEBUG(aIndex>=0 && aIndex < KSupportedGameDataMimetypes, User::Invariant());

    switch (aIndex)

        {

        case 0:

        default:

            return TDataType( KGameDataMimeType );

        }

    }

void CGameRecognizer::DoRecognizeL( const TDesC& aName, const TDesC8& aBuffer)

    {

    TBool     nameOk( EFalse );

    TBool     headerOk( EFalse );

    iConfidence = ENotRecognized;

    if ( aBuffer.Length() < 10 )

    	{

        return;

    	}

    // First try the name. Then the data.

    nameOk  = NameRecognizedL( aName );

    headerOk = HeaderRecognized( aBuffer );

    if ( nameOk && headerOk )

        {

        iConfidence = ECertain;

        }

    else if ( !nameOk && headerOk)

        {

        iConfidence = EProbable;

        }

    else if ( nameOk && !headerOk )

        {

        iConfidence = EPossible;

        }

    else

    	{

        return;

    	}

    iDataType = TDataType( KGameDataMimeType );

    }

TBool CGameRecognizer::HeaderRecognized( const TDesC8& aBuffer ) const

    {

    if ( aBuffer.Find( KGndHeader ) > 10 )

    	{

        return ETrue;

    	}

    else

    	{

        return EFalse;

    	}

    }

TBool CGameRecognizer::NameRecognizedL( const TDesC& aName) const

    {

    TBool ret = EFalse;

    if ( aName.Length() > 5 )

        {

        TInt dotPos = aName.LocateReverse( '.' );

        if (dotPos != KErrNotFound)

            {

            TInt extLength = aName.Length() - dotPos;

            HBufC* ext = aName.Right( extLength ).AllocL();

            CleanupStack::PushL( ext );

            if ( ext->CompareF( KDotNGD )==0 )

                {

                ret = ETrue;

                }

            CleanupStack::PopAndDestroy( ext );

            }

        }

    return ret;

    }

CApaDataRecognizerType* CGameRecognizer::CreateRecognizerL()

    {

    return new (ELeave) CGameRecognizer();

    }

const TImplementationProxy ImplementationTable[] =

    {

    IMPLEMENTATION_PROXY_ENTRY(KMimeGameDataRecognizerImplementationUid,

                               CGameRecognizer::CreateRecognizerL)

    };

EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)

    {

    aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);

    return ImplementationTable;

    }

// End of File