/*

* Copyright (c) 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:  Utils for storage modules.

*

*/

#include "vimpststorageutils.h"

#include "cvimpststoragemanagerfactory.h"

#include "mvimpststorageserviceview.h"

#include "vimpstdebugtrace.h"

#include "vimpstbuilddefinitions.h"

#include <escapeutils.h>

#include <collate.h>

// needed to skip prefixes in domain-neutral comparison (TUint version)

const TUint KColonUInt( ':' );

// needed to skip domains in domain-neutral comparison (TUint version)

const TUint KAtUInt( '@' );

// "test character identity and accents, ignore case"

const TInt KCollationLevel = 1;

// defines how far we are going to search for the protocol part in user id

const TInt KMaxLengthSearchProtPart = 4;

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

// VIMPSTStorageUtils::NeutralCompare

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

//

TInt VIMPSTStorageUtils::NeutralCompare( const TDesC& aId1,

        const TDesC& aId2, TBool aDomainNeutral )

    {

    // points to user part of id

    TPtrC ptrId1( aId1 );

    TPtrC ptrId2( aId2 );

	// Reduce looking for protocol part only to beginning of the WVID and

    // skip protocol part ("anything:") in the beginning of the WVID

    TInt colonPos1 = aId1.Left( KMaxLengthSearchProtPart ).Locate( KColonUInt );

    // first id

    if ( ( KErrNotFound != colonPos1 ) && ( aId1.Length() -1 != colonPos1 ) )

        {

        // contains ":", and it is not the last char

        ptrId1.Set( aId1.Mid( colonPos1 + 1 ) );

        }

    TInt colonPos2 = aId2.Left( KMaxLengthSearchProtPart ).Locate( KColonUInt );

    // second id

    if ( ( KErrNotFound != colonPos2 ) && ( aId2.Length() -1 != colonPos2 ) )

        {

        // contains ":", and it is not the last char

        ptrId2.Set( aId2.Mid( colonPos2 + 1 ) );

        }

    // find out if we have domains in the ids

    TInt domainPos1( ptrId1.Locate( KAtUInt ) );

    TInt domainPos2( ptrId2.Locate( KAtUInt ) );

    TBool domainIn1( KErrNotFound != domainPos1 );

    TBool domainIn2( KErrNotFound != domainPos2 );

    // points to domains in the neutral id

    TPtrC ptrDom1( KNullDesC );

    TPtrC ptrDom2( KNullDesC );

    // points to user parts in the neutral id

    TPtrC ptrUid1( ptrId1 );

    TPtrC ptrUid2( ptrId2 );

    // separate user id parts and domain parts

    if ( domainIn1 )

        {

        ptrDom1.Set( ptrId1.Mid( domainPos1 + 1) );

        ptrUid1.Set( ptrId1.Mid( 0, domainPos1 ) );

        }

    if ( domainIn2 )

        {

        ptrDom2.Set( ptrId2.Mid( domainPos2 + 1) );

        ptrUid2.Set( ptrId2.Mid( 0, domainPos2 ) );

        }

    // Create custom collation method to ignore punctuations

    // index 0 gets the default method

    TCollationMethod collation =

        *Mem::CollationMethodByIndex( 0 );

    collation.iFlags |= TCollationMethod::EIgnoreNone;

    // domains are compared only when it is really needed

    // check if userid part is the same in both ids   

    TInt idResult = ptrUid1.Compare( ptrUid2);

	if( idResult != 0 )

		{

		return idResult;

		}

	// id part is same, we have to compare domain

    // If domain comparison is neutral and one id is without domain

    // -> Domains are same. Other situation domainResult stays valid.

    if( aDomainNeutral && ( domainIn1 ^ domainIn2 ) )

        {

        return 0;

        }

    else

    	{

    	return ptrDom1.CompareC( ptrDom2, KCollationLevel, &collation );

    	}

    }

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

// VIMPSTStorageUtils::DisplayId

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

//

TPtrC VIMPSTStorageUtils::DisplayId( const TDesC& aId, TBool /*aListHiding*/ )

    {

    TPtrC ret( aId );

    return ret;

    }

// End of file