/*

* 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 "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:  Codec to code attribute type and presence id.

*

*/

// INCLUDE FILES

#include    "PEngAttributeStoreIDCodec.h"

#include    <E32Base.h>

//CONSTS

const TUint32 KAttributeLibraryUid = 0x101FB0E2;

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

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

// PEngAttributeStoreIDCodec::GenerateStoreIdL()

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

//

HBufC* PEngAttributeStoreIDCodec::GenerateStoreIdL( TUint32 aAttributeType,

                                                    const TDesC& aPresenceId )

    {

    TInt storeIdLength = aPresenceId.Length() + 4; //2 x TUInt32 ==> 4 x 16bytes

    HBufC* storeIdBuf = HBufC::NewL( storeIdLength );

    TPtr storeId( storeIdBuf->Des() );

    storeId.Append( ( TUint16* ) &KAttributeLibraryUid, 2 );  //TUInt32 ==> 2 x 16bytes

    storeId.Append( ( TUint16* ) &aAttributeType, 2 ); //TUInt32 ==> 2 x 16bytes

    storeId.Append( aPresenceId );

    return storeIdBuf;

    }

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

// PEngAttributeStoreIDCodec::ResolveStoreId()

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

//

TInt PEngAttributeStoreIDCodec::ResolveStoreId( const TDesC& aStoreId,

                                                TUint32& aAttributeType,

                                                TPtrC& aPresenceId )

    {

    if ( aStoreId.Length() < 4 )

        {

        return KErrCorrupt;

        }

    TUint32 sidUid = *( TUint32* ) aStoreId.Ptr();

    if ( sidUid != KAttributeLibraryUid )

        {

        return KErrCorrupt;

        }

    aAttributeType = *( TUint32* ) aStoreId.Mid( 2 ).Ptr();

    aPresenceId.Set( aStoreId.Mid( 4 ) );

    return KErrNone;

    }

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

// PEngAttributeStoreIDCodec::AttributeTypePresentInStoreId()

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

//

TBool PEngAttributeStoreIDCodec::AttributeTypePresentInStoreId( const TDesC& aStoreId,

                                                                TUint32 aAttributeType )

    {

    if ( aStoreId.Length() >= 4 )

        {

        //valid store id

        TUint32 sidUid = *( TUint32* ) aStoreId.Ptr();

        if ( sidUid == KAttributeLibraryUid )

            {

            TUint32 attributeType = *( TUint32* ) aStoreId.Mid( 2 ).Ptr();

            if ( attributeType == aAttributeType )

                {

                return ETrue;

                }

            }

        }

    return EFalse;

    }

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

// PEngAttributeStoreIDCodec::PresenceIdPresentInStoreId()

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

//

TBool PEngAttributeStoreIDCodec::PresenceIdPresentInStoreId( const TDesC& aStoreId,

                                                             const TDesC& aPresenceId )

    {

    if ( aStoreId.Length() >= 4 )

        {

        //valid store id

        TPtrC storeIdPresenceIdPart = aStoreId.Mid( 4 );

        if ( aPresenceId.Compare( storeIdPresenceIdPart ) == 0 )

            {

            return ETrue;

            }

        }

    return EFalse;

    }

//  End of File