/*

* Copyright (c) 1997-2009 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: 

*

*/

#include "TSTCLIPB.H"

#include <s32file.h>

const TUid KClipboardFileUid={268435515};

_LIT(KClipFilePath, "_:\\system\\clipbd\\main.sto");

typedef TBuf<28> TClipboardFileName;

/**

Construct full path and name of clipbard file.

@param aFileName On completion this will hold the result.

*/

static void GetClipboardFileName(TClipboardFileName& aFileName)

	{

	aFileName.Copy(KClipFilePath);

	aFileName[0] = 'A' + static_cast<TInt>(RFs::GetSystemDrive());

	}

EXPORT_C CClipboard* CClipboard::NewForReadingLC(RFs& aFsSession)

    {

    // get store filename

	TClipboardFileName clipboardFileName;

	GetClipboardFileName(clipboardFileName);

	TEntry entry;

	User::LeaveIfError(aFsSession.Entry(clipboardFileName,entry));

	if (entry[0]!=KDirectFileStoreLayoutUid || entry[1]!=KClipboardFileUid)

		User::Leave(KErrCorrupt); // !! get a better error

	CClipboard* self=new(ELeave) CClipboard(aFsSession);

    CleanupStack::PushL(self);

	self->ConstructForReadingL(clipboardFileName);

	return(self);

	}

/**

Construct a clipboard store for reading from.

*/

void CClipboard::ConstructForReadingL(const TDesC& aFileName)

    {

	iStore=CDirectFileStore::OpenL(iFsSession,aFileName,EFileRead);

	iStreamDictionary=CStreamDictionary::NewL();

	RStoreReadStream root;

	root.OpenLC(*iStore,iStore->Root());

	root>> *iStreamDictionary;

	CleanupStack::PopAndDestroy(); // root

	}

EXPORT_C CClipboard* CClipboard::NewForWritingLC(RFs& aFsSession)

    {

    // get store filename

	TClipboardFileName clipboardFileName;

	GetClipboardFileName(clipboardFileName);

	CClipboard* self=new(ELeave) CClipboard(aFsSession);

    CleanupStack::PushL(self);

	self->ConstructForWritingL(clipboardFileName);

	return(self);

	}

/**

Construct a clipboard store for writing to.

*/

void CClipboard::ConstructForWritingL(const TDesC& aFileName)

    {

	CreateDirectoryL(aFileName);

	iStore=CDirectFileStore::ReplaceL(iFsSession,aFileName,EFileRead|EFileWrite);

	iStore->SetTypeL(TUidType(KDirectFileStoreLayoutUid,KClipboardFileUid));

	iStreamDictionary=CStreamDictionary::NewL();

	}

CClipboard::CClipboard(RFs& aFsSession)

	: iFsSession(aFsSession)

	{

	}

EXPORT_C CClipboard::~CClipboard()

    {

   	delete(iStore);

	delete(iStreamDictionary);

    }

void CClipboard::CreateDirectoryL(const TDesC& aFileName)

	{

	TParse parser;

	parser.Set(aFileName,NULL,NULL);

	TInt err=iFsSession.MkDirAll(parser.DriveAndPath());

	if (err!=KErrNone && err!=KErrAlreadyExists)

		User::Leave(err);

	}

EXPORT_C void CClipboard::CommitL()

	{

	RStoreWriteStream stream;

	TStreamId streamId=stream.CreateLC(*iStore);

	stream<< *iStreamDictionary;

	stream.CommitL();

	CleanupStack::PopAndDestroy(); // dictionary stream

	iStore->SetRootL(streamId);

	iStore->CommitL();

	}