// 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:

//

/**

 @file

 @internalTechnology

*/

#include <e32base.h>

#include "msctypes.h"

#include "cusbhostmslogicalunit.h"

#include "tlogicalunitlist.h"

#include "msdebug.h"

#include "debug.h"

TLogicalUnitList::~TLogicalUnitList()

    {

    __MSFNLOG

    iLu.ResetAndDestroy();

    }

void TLogicalUnitList::AddLuL(CUsbHostMsLogicalUnit* aLu)

    {

    __MSFNLOG

    __HOSTPRINT1(_L("Adding LU 0x%x"), aLu);

    TInt r= FindLu(aLu->Lun());

    if (r < 0)

        {

        if (r != KErrNotFound)

            {

            User::Leave(r);

            }

        }

    else	// If it is able to find the lun already

        {

        User::Leave(KErrAlreadyExists);

        }

	User::LeaveIfError(iLu.Append(aLu));

    }

void TLogicalUnitList::RemoveLuL(TLun aLun)

    {

    __MSFNLOG

    TInt index = FindLu(aLun);

    User::LeaveIfError(index);

    CUsbHostMsLogicalUnit* lu = iLu[index];

    TRAPD(err, lu->UnInitL());

    delete lu;

    iLu.Remove(index);

	if(err != KErrNone)

		User::Leave(err);

    }

void TLogicalUnitList::RemoveAllLuL()

    {

    __MSFNLOG

	TInt ret = KErrNone;

    for (TInt index = 0; index < iLu.Count(); index++)

        {

        CUsbHostMsLogicalUnit* lu = iLu[index];

        TRAPD(err, lu->UnInitL());

        delete lu;

        // set return flag for first error condition

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

			ret = err;

        }

    iLu.Reset();

    User::LeaveIfError(ret);

    }

TInt TLogicalUnitList::Count() const

    {

    __MSFNSLOG

	return iLu.Count();

	}

TInt TLogicalUnitList::FindLu(TLun aLun) const

    {

    __MSFNSLOG

    TInt index;

    for (index = 0; index < iLu.Count(); index++)

        {

        __HOSTPRINT2(_L("search LUN=%d : interface id = %d"), aLun, iLu[index]->Lun());

        if (iLu[index]->Lun() == aLun)

            {

            break;

            }

        }

    if (index == iLu.Count())

        {

        return KErrNotFound;

        }

    return index; // Instead of KErrNone, we pass the index >= 0 of the aLun in the list

    }

CUsbHostMsLogicalUnit& TLogicalUnitList::GetLuL(TLun aLun) const

    {

    __MSFNSLOG

    TInt index = FindLu(aLun);

    User::LeaveIfError(index);

    return *iLu[index];

    }