/*
* Copyright (c) 2010 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: Part of SyncML Data Synchronization Plug In Adapter
*
*/
#include <hash.h>
#include <utf.h>
#include <cntitem.h>
#include "snapshotitem.h"
#include "logger.h"
// -----------------------------------------------------------------------------
// TSnapshotItem::TSnapshotItem
// C++ default constructor can NOT contain any code, that might leave
// -----------------------------------------------------------------------------
TSnapshotItem::TSnapshotItem() : TNSmlSnapshotItem()
{
}
// -----------------------------------------------------------------------------
// TSnapshotItem::TSnapshotItem
// Constructor, takes item id as a parameter
// -----------------------------------------------------------------------------
TSnapshotItem::TSnapshotItem( const TSmlDbItemUid& aItemId,
const TSmlDbItemUid& aParent )
: TNSmlSnapshotItem( aItemId )
{
SetParentId( aParent );
}
// -----------------------------------------------------------------------------
// TSnapshotItem::ExternalizeL
// Writes the contents of this class and it's base to stream
// -----------------------------------------------------------------------------
void TSnapshotItem::ExternalizeL( RWriteStream& aStream ) const
{
TNSmlSnapshotItem::ExternalizeL( aStream );
TPckgBuf<THashValue> nameBuf(iHash);
aStream << nameBuf;
}
// -----------------------------------------------------------------------------
// TSnapshotItem::InternalizeL
// Reads the contents of this class and it's base from stream
// -----------------------------------------------------------------------------
void TSnapshotItem::InternalizeL( RReadStream& aStream )
{
TNSmlSnapshotItem::InternalizeL( aStream );
TPckgBuf<THashValue> nameBuf;
aStream >> nameBuf;
iHash = nameBuf();
}
// -----------------------------------------------------------------------------
// TSnapshotItem::CreateHashL
// Create hash value from group content
// -----------------------------------------------------------------------------
void TSnapshotItem::CreateHashL( CContactGroup& aGroup )
{
CMessageDigest* hash = CMessageDigestFactory::NewDigestLC( CMessageDigest::EMD5 );
if ( aGroup.HasItemLabelField() )
{
TPtrC label = aGroup.GetGroupLabelL();
HBufC8* tempBuf = CnvUtfConverter::ConvertFromUnicodeToUtf8L( label );
CleanupStack::PushL( tempBuf );
hash->Update( tempBuf->Des() );
CleanupStack::PopAndDestroy( tempBuf );
}
// Create text field from items on group
CContactIdArray* contactsIdArray = aGroup.ItemsContainedLC();
const TInt idBufferMaxSize( 400 );
HBufC8* tempIdBuf = HBufC8::NewLC( idBufferMaxSize );
TPtr8 tempId = tempIdBuf->Des();
const TInt KMaxNumLength(5);
if ( contactsIdArray ) // this is NULL if there are no objects
{
tempId.AppendNum( contactsIdArray->Count(), EHex );
for (TInt i=0; i< contactsIdArray->Count(); i++ )
{
if ( tempId.Length()+KMaxNumLength > tempId.MaxLength() )
{
// buffer is almost full, don't add any new items
LOGGER_WRITE("buffer full");
break;
}
// add item id
tempId.AppendNum( (*contactsIdArray)[i] , EHex );
}
}
else
{
tempId.AppendNum( 0 );
}
// update hash
hash->Update( tempId );
iHash.Copy( hash->Final() );
CleanupStack::PopAndDestroy( tempIdBuf );
CleanupStack::PopAndDestroy( contactsIdArray );
CleanupStack::PopAndDestroy( hash );
}
// -----------------------------------------------------------------------------
// TSnapshotItem::Hash
// Gets Hash
// -----------------------------------------------------------------------------
const TDesC8& TSnapshotItem::Hash() const
{
return iHash;
}