1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 #include "S32STOR.H"

    17 #include "S32FILE.H"

    18 #include "U32PERM.H"

    19 #include "S32FileIter.h"

    20 

    21 /**

    22 After calling Close() RPermanentFileStoreIter instance could be used again

    23 with the same or some other CPermanentFileStore instance.

    24 */

    25 EXPORT_C void RPermanentFileStoreIter::Close()

    26 	{

    27 	if(iImpl)

    28 		{

    29 		iImpl->Close();

    30 		}

    31 	delete iImpl;

    32 	iImpl = NULL;

    33 	}

    34 

    35 /**

    36 Starts a CPermanentFileStore stream IDs iteration.

    37 @param aStore CPermanentFileStore instance, which stream IDs sequence we want to 

    38 explore.

    39 @leave KErrNoMemory

    40 */

    41 EXPORT_C void RPermanentFileStoreIter::ResetLC(const CPermanentFileStore& aStore)

    42 	{

    43 	__ASSERT_DEBUG(!iImpl, User::Invariant());

    44 	::CleanupClosePushL(*this);

    45 	CPermanentStoreCoord& coord = aStore.CoordL();

    46 	CPermanentStoreToc& table = coord.TableL();

    47 	iImpl = new (ELeave) RPermanentStoreTocIter(table);

    48 	iImpl->ResetL();

    49 	}

    50 

    51 /**

    52 Retrieves the next stream ID from stream IDs sequence, controlled by CPermanentFileStore 

    53 instance. 

    54 @return The next stream ID or KNullStreamIdValue if there are no more stream IDs.

    55 @leave KErrNoMemory

    56 */

    57 EXPORT_C TStreamId RPermanentFileStoreIter::NextL()

    58 	{

    59 	__ASSERT_DEBUG(iImpl, User::Invariant());

    60 	TStreamId streamId = KNullStreamIdValue;

    61 	CPermanentStoreToc::TEntry entry;

    62 	while(iImpl->NextL(entry))

    63 		{

    64 		if((TUint32)entry.handle < KMaxStreamIdValue)

    65 			{

    66 			streamId = entry.handle;

    67 			break;

    68 			}

    69 		}

    70 	return streamId;

    71 	}