/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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 <f32file.h>

#include <f32fsys.h>

#include <f32ver.h>

#include <e32uid.h>

#include "svphostfsy.h"

//////////////////////////////////////////////////////////////////////////

//	CSVPHostFileCB							//

//////////////////////////////////////////////////////////////////////////	

CSVPHostFileCB::CSVPHostFileCB()

//

// Constructor

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::CSVPHostFileCB()"));

	__DECLARE_NAME(_S("CSVPHostFileCB"));

	}

CSVPHostFileCB::~CSVPHostFileCB()

//

// Destructor

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::~CSVPHostFileCB()"));

	if ((TInt)iHandle == KErrBadHandle) return;

	SVP_HOST_FS_DEVICE().FileClose(Drive().DriveNumber(), iHandle);

	}

TBool CSVPHostFileCB::IsRomDrive() const

//

// Returns ETrue if the drive number == EDriveZ

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::IsRomDrive()"));

	return(EFalse);

	}

void CSVPHostFileCB::CheckPos(TInt /*aPos*/)

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::CheckPos()"));

	}

void CSVPHostFileCB::ReadL(TInt aPos,TInt& aLength ,const TAny* aDes , const RMessagePtr2& aMessage)

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::ReadL(%d,%d)"), aPos, aLength);

	TInt n = 0;

	TInt pos=aPos;

	TInt len=aLength;

	TBuf8<0x400> buf;

	if (aMessage.Handle() == KLocalMessageHandle)

		((TPtr8* )aDes)->SetLength(0);

	TUint driveNumber = Drive().DriveNumber() ; 

	while (len)

		{

		TInt s=Min(len,buf.MaxLength());

		TSVPHostFsFileReadInfo info(driveNumber, iHandle,s,pos+n,(char*)buf.Ptr());

		DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::ReadL pos %d s %d p 0x%08x"), pos+n, s, buf.Ptr());

		User::LeaveIfError(SVP_HOST_FS_DEVICE().FileRead(info));

		DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::ReadL read %d bytes"), info.iLength);

		buf.SetLength(info.iLength);

		DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::ReadL set buf length"));

		if (aMessage.Handle() == KLocalMessageHandle)

		        ((TPtr8* )aDes)->Append(buf);

		else

		        aMessage.WriteL(0,buf,n);

		n+=info.iLength;

		if (((TInt)info.iLength)<s)

		        break;

		len-=info.iLength;

		}

	aLength=n;

	iCurrentPos=n+aPos;

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::ReadL aLength %d iCurrentPos %d"), aLength, iCurrentPos);

	}

void CSVPHostFileCB::WriteL(TInt aPos, TInt& aLength, const TAny* aDes, const RMessagePtr2& aMessage)

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::WriteL(%d,%d)"), aPos, aLength);

	TInt n=0;

	TInt pos=aPos;

	TInt len=aLength;

	TBuf8<0x400> buf;

	TUint driveNumber = Drive().DriveNumber() ; 

	while (len)

		{

		TInt s=Min(len,buf.MaxLength());

		if (aMessage.Handle() == KLocalMessageHandle)

			buf.Copy( ((TPtr8* )aDes)->MidTPtr(n, s) );

		else

			aMessage.ReadL(0,buf,n);

		TSVPHostFsFileWriteInfo info(driveNumber, iHandle,s,pos+n,(char*)buf.Ptr());

		DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::WriteL pos %d s %d p 0x%08x"), pos+n, s, buf.Ptr());

		User::LeaveIfError(SVP_HOST_FS_DEVICE().FileWrite(info));

		DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::WriteL wrote %d bytes"), info.iLength);

		if (((TInt)info.iLength)<s) 

		  {

		    DP(_L("** (SVPHOSTFIL) !!! CSVPHostFileCB::WriteL failed to write s %d bytes"), s);

			User::Leave(KErrCorrupt);

		  }

		len-=info.iLength;

		n+=info.iLength;

		}

	aLength=n;

	iCurrentPos=n+aPos;

	}

TInt CSVPHostFileCB::Address(TInt& /*aPos*/) const

//

//	If ROM file, do a memory map and return the address

//	Dummy implementation

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::Address()"));

	return(KErrNone);

	}

void CSVPHostFileCB::SetSizeL(TInt aSize)

//

//	Set the file size

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::SetSizeL()"));

	TSVPHostFsFileSetSizeInfo info(Drive().DriveNumber(), iHandle,aSize);

	User::LeaveIfError(SVP_HOST_FS_DEVICE().FileSetSize(info));

	}

void CSVPHostFileCB::SetEntryL(const TTime& aTime,TUint aSetAttMask,TUint aClearAttMask)

// TODO: Not tested

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::SetEntryL()"));

	//User::Leave(KErrNotSupported);

	}

void CSVPHostFileCB::FlushAllL()

//

// Commit any buffered date to the media.

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::FlushAll()"));

	User::LeaveIfError(SVP_HOST_FS_DEVICE().FlushAll(Drive().DriveNumber()));

	}

void CSVPHostFileCB::FlushDataL()

//

//	Commit any buffered date to the media

//	Dummy implementation of a pure virtual function

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::FlushDataL()"));

	User::LeaveIfError(SVP_HOST_FS_DEVICE().FlushData(Drive().DriveNumber()));

	}

void CSVPHostFileCB::RenameL(const TDesC& /*aNewName*/)

//

//	Rename the file while open

//	Dummy implementation of a pure virtual function

//

	{

	DP(_L("** (SVPHOSTFIL) CSVPHostFileCB::RenameL()"));

	}