// Copyright (c) 1998-2009 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:

 // The file-store database which provides the default format

 // 

 //

 #include "US_STD.H"

 #include <s32file.h>

 EXPORT_C CDbFileStoreDatabase::CDbFileStoreDatabase(RFs& aFs)

 	:iFs(aFs)

 	{}

 EXPORT_C CDbFileStoreDatabase::~CDbFileStoreDatabase()

 	{

 	if (iDelete)

 		{

 		delete iStore;		// must be destroyed before the file is deleted

 		iStore=0;

 		// If a debug build - record error

 		(void)iFs.Delete(*iName);

 		}

 	delete iName;

 	}

 CDbFileStoreDatabase* CDbFileStoreDatabase::NewLC(RFs& aFs)

 	{

 	CDbFileStoreDatabase* self=new(ELeave) CDbFileStoreDatabase(aFs);

 	CleanupStack::PushL(self);

 	return self;

 	}

 //

 // over-ride the store database and just mark the file for deletion

 //

 EXPORT_C void CDbFileStoreDatabase::DestroyL()

 	{

 	iDelete=ETrue;

 	}

 //

 // Provide the "size" and "usage" properties

 //

 EXPORT_C TInt CDbFileStoreDatabase::Property(CDbDatabase::TProperty aProperty)

 	{

 	switch (aProperty)

 		{

 	case CDbDatabase::EUpdateStats:

 		return 1;

 	case CDbDatabase::ESize:

 	case CDbDatabase::EUsage:

 		{

 		TInt size;

 		TInt r=STATIC_CAST(CFileStore&,Store()).File().Size(size);

 		if (r<0)

 			return r;

 		if (aProperty==CDbDatabase::ESize)

 			return size;

 		r=iReclaim;

 		if (r<0)

 			return r;

 		return 100-(r*100)/size;	// usage in %

 		}

 	default:

 		return CDbStoreDatabase::Property(aProperty);

 		}

 	}

 //SYMBIAN_REMOVE_TRIVIAL_ENCRYPTION version of the method.

 EXPORT_C void CDbFileStoreDatabase::CreateL(const TDesC& aName, TDbFormat::TCreate aMode,

                                             const TUidType& aType)

 	{

 	__ASSERT(!iName);	// check construction phase

 //

 	iName=aName.AllocL();

 	CFileStore* store;

 	switch (aMode)

 		{

 	default:

 		__LEAVE(KErrNotSupported);

 	case TDbFormat::ECreate:

 		store=CPermanentFileStore::CreateL(iFs,aName,EFileRead|EFileWrite);

 		break;

 	case TDbFormat::EReplace:

 		store=CPermanentFileStore::ReplaceL(iFs,aName,EFileRead|EFileWrite);

 		break;

 		};

 	iStore=store;

 	iDelete=ETrue;		// cleanup fully in case of failure

 	store->SetTypeL(aType);

 	store->SetRootL(CreateRootL(CDbStoreDatabase::ConstructL()));

 	store->CommitL();

 	iDelete=EFalse;				// file is now good

 	}

 // SYMBIAN_REMOVE_TRIVIAL_ENCRYPTION version of the method.

 // Create the standard file database. The database is the root stream

 //

 EXPORT_C CDbDatabase* CDbFileStoreDatabase::CreateL(RFs& aFs, const TDesC& aName,

                                                     TDbFormat::TCreate aMode, const TUidType& aType)

 	{

 	CDbFileStoreDatabase* self=NewLC(aFs);

 	self->CreateL(aName,aMode,aType);

 	CDbDatabase* db=self->InterfaceL();

 	CleanupStack::Pop(self);

 	return db;

 	}

 //

 // default implementation. Database _is_ the root

 //

 EXPORT_C TStreamId CDbFileStoreDatabase::CreateRootL(TStreamId aDatabaseId)

 	{

 	return aDatabaseId;

 	}

 //

 // Open, phase #1

 // open the file-store and return the root stream id

 //

 EXPORT_C void CDbFileStoreDatabase::OpenL(const TDesC& aName,TDbFormat::TOpen aMode)

 	{

 	__ASSERT(!iName);	// check construction phase

 //

 	iName=aName.AllocL();

 	const TUint mode=aMode==TDbFormat::EReadOnly ? EFileShareReadersOnly : EFileWrite;

 	CFileStore* store=CPermanentFileStore::OpenL(iFs,*iName,mode);

 	iStore=store;

 	CDbStoreDatabase::RestoreL(DatabaseIdL(store->Root()));

 	}

 //

 // default implementation. Database _is_ the root

 //

 EXPORT_C TStreamId CDbFileStoreDatabase::DatabaseIdL(TStreamId aRootId)

 	{

 	return aRootId;

 	}

 //

 // Create the standard file database. The database is the root stream

 //

 EXPORT_C CDbSource* CDbFileStoreDatabase::OpenL(RFs& aFs,const TDesC& aName,TDbFormat::TOpen aMode)

 	{

 	CDbFileStoreDatabase* self=NewLC(aFs);

 	self->OpenL(aName,aMode);

 	CDbSource* src=self->SourceL();

 	CleanupStack::Pop();			// self

 	return src;

 	}

 const TDbFormat KBuiltinFormat=

 	{

 	_S("epoc"),&CDbFileStoreDatabase::CreateL,&CDbFileStoreDatabase::OpenL,

 	{KPermanentFileStoreLayoutUidValue,KDbmsFileDatabaseUidValue}

 	};

 GLDEF_D const TDbDriver KBuiltinDriver={1,&KBuiltinFormat};