--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/upnpsharing/upnpsharingalgorithm/src/upnpcdsreaderao.cpp	Wed Nov 03 11:45:09 2010 +0200
@@ -0,0 +1,330 @@
+/**
+ * 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 "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:  CUpnpCdsReaderAO class implementation
+ *
+ */
+
+// INCLUDES
+#include <upnpfilesharing.h>
+#include <upnpobject.h>
+
+#include "upnpcdsreaderao.h"
+#include "upnpsharingalgorithmconstants.h"
+#include "upnplog.h"
+#include "upnpcommonutils.h"
+#include "upnpcdsliteobjectarray.h"
+#include "upnpbrowsecriteria.h"
+#include "upnpcontainerlist.h"
+#include "upnpitemlist.h"
+
+const TInt KDefaultBrowseReqCount( 50 );
+const TInt KLoopLimit( 3 );
+
+// --------------------------------------------------------------------------
+// CUpnpSecAccessController::NewL
+// --------------------------------------------------------------------------
+//
+CUpnpCdsReaderAO* CUpnpCdsReaderAO::NewL(
+    CUpnpCdsLiteObjectArray& aUpnpCdsLiteObjects )
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::NewL" );
+
+    CUpnpCdsReaderAO* self = new ( ELeave ) CUpnpCdsReaderAO(
+        aUpnpCdsLiteObjects );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::ConstructL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::ConstructL()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::ConstructL" );
+
+    if ( !CActiveScheduler::Current() )
+        {
+        iScheduler = new ( ELeave ) CActiveScheduler;
+        CActiveScheduler::Install( iScheduler );
+        }
+    // Add this active object to the active scheduler.
+    CActiveScheduler::Add( this );
+
+    iFileSharing = CUpnpFileSharing::NewL();
+    iWaitRequest = new ( ELeave ) CActiveSchedulerWait();
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::~CUpnpCdsReaderAO
+// --------------------------------------------------------------------------
+//
+CUpnpCdsReaderAO::~CUpnpCdsReaderAO()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::~CUpnpCdsReaderAO" );
+
+    delete iFileSharing;
+    delete iWaitRequest;
+
+    if ( CActiveScheduler::Current() == iScheduler )
+        {
+        CActiveScheduler::Install( NULL );
+        }
+    delete iScheduler;
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::ReadCdsStructureL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::ReadCdsStructureL()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::ReadCdsStructureL" );
+
+    // Start reading from root container
+    GetContainersL( KRootContainer );
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::GetContainersL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::GetContainersL( const TDesC8& aContainerId )
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::GetContainersL" );
+
+    // Get all items of container with id aContainerId
+    GetItemsL( aContainerId );
+
+    // Number of found items. Count is initialized as KDefaultBrowseReqCount
+    // to get into the while loop. Loop ends, when GetSharedItemListL
+    // request does not get new objects
+    TInt count( KDefaultBrowseReqCount );
+    TInt startingIndex( 0 );
+    TInt loopCounter( 0 );
+
+    while ( startingIndex < count )
+        {
+        count = 0;
+
+        CUpnpContainerList* containerList = CUpnpContainerList::NewL();
+        CleanupStack::PushL( containerList );
+
+        CUpnpBrowseCriteria* browseCriteria = CUpnpBrowseCriteria::NewLC();
+        browseCriteria->SetRequestedCount( KDefaultBrowseReqCount );
+        browseCriteria->SetStartingIndex( startingIndex );
+        browseCriteria->SetFilterL( KBrowseCriteriaFilter );
+
+        // Query all items and containers with container id aContainerId
+        iFileSharing->GetSharedContainerListL(
+            UPnPCommonUtils::DesC8ToInt( aContainerId ),
+            *browseCriteria,
+            *containerList,
+            count,
+            iStatus );
+
+        CleanupStack::PopAndDestroy( browseCriteria );
+
+        // Wait for the request to complete
+        CompleteRequestL();
+
+        // Leave, if GetSharedContainerListL gives continuously zero items
+        if ( !containerList->ObjectCount() )
+            {
+            loopCounter += 1;
+            if ( loopCounter >= KLoopLimit )
+                {
+                User::Leave( KErrGeneral );
+                }
+            }
+        else
+            {
+            loopCounter = 0;
+            }
+
+        for ( TInt index( 0 ); index < containerList->ObjectCount(); index++ )
+            {
+            // Append container to the objects array
+            iUpnpCdsLiteObjects.AppendL( ( *containerList )[ index ] );
+            // Call object search recursively for each found container
+            GetContainersL( ( *containerList )[ index ]->Id() );
+            }
+
+        startingIndex += containerList->ObjectCount();
+
+        CleanupStack::PopAndDestroy( containerList );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::GetItemsL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::GetItemsL( const TDesC8& aContainerId )
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::GetItemsL" );
+
+    // Number of found items. Count is initialized as KDefaultBrowseReqCount
+    // to get into the while loop. Loop ends, when GetSharedItemListL
+    // request does not get new objects
+    TInt count( KDefaultBrowseReqCount );
+    TInt startingIndex( 0 );
+    TInt loopCounter( 0 );
+
+    while ( startingIndex < count )
+        {
+        count = 0;
+
+        CUpnpItemList* itemList = CUpnpItemList::NewL();
+        CleanupStack::PushL( itemList );
+
+        CUpnpBrowseCriteria* browseCriteria = CUpnpBrowseCriteria::NewLC();
+        browseCriteria->SetRequestedCount( KDefaultBrowseReqCount );
+        browseCriteria->SetStartingIndex( startingIndex );
+        browseCriteria->SetFilterL( KBrowseCriteriaFilter );
+
+        // Query all items of container with container id aContainerId
+        iFileSharing->GetSharedItemListL(
+            UPnPCommonUtils::DesC8ToInt( aContainerId ),
+            *browseCriteria,
+            *itemList,
+            count,
+            iStatus );
+
+        CleanupStack::PopAndDestroy( browseCriteria );
+
+        // Wait for the request to complete
+        CompleteRequestL();
+
+        // Leave, if GetSharedContainerListL gives continuously zero items
+        if ( !itemList->ObjectCount() )
+            {
+            loopCounter += 1;
+            if ( loopCounter >= KLoopLimit )
+                {
+                User::Leave( KErrGeneral );
+                }
+            }
+        else
+            {
+            loopCounter = 0;
+            }
+
+        // Append files to the objects array
+        for ( TInt index( 0 ); index < itemList->ObjectCount(); index++ )
+            {
+            // Local media applications store temporary items under
+            // root container. Therefore items whose parent container
+            // is root, are not appended to the objects array.
+            if ( ( *itemList )[ index ]->ParentId().Match( KRootContainer )
+                == KErrNotFound )
+                {
+                iUpnpCdsLiteObjects.AppendL( ( *itemList )[ index ] );
+                }
+            }
+
+        startingIndex += itemList->ObjectCount();
+
+        CleanupStack::PopAndDestroy( itemList );
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::RunL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::RunL()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::RunL" );
+
+    // Request completed - no need to wait anymore
+    // Let ao caller to continue
+    StopWaitingRequestComplete();
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::DoCancel
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::DoCancel()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::DoCancel" );
+
+    Cancel();
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::WaitRequestToComplete
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::WaitRequestToComplete()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::\
+WaitRequestToComplete" );
+
+    // Wait for a request to complete
+    if ( iWaitRequest && !iWaitRequest->IsStarted() )
+        {
+        iWaitRequest->Start();
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::StopWaitingRequestComplete
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::StopWaitingRequestComplete()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::\
+StopWaitingRequestComplete" );
+
+    // Stop waiting process after query has been completed
+    if ( iWaitRequest && iWaitRequest->IsStarted() )
+        {
+        iWaitRequest->AsyncStop();
+        }
+    }
+
+// --------------------------------------------------------------------------
+// CUpnpCdsReaderAO::CompleteRequestL
+// --------------------------------------------------------------------------
+//
+void CUpnpCdsReaderAO::CompleteRequestL()
+    {
+    __LOG( "[CUpnpSharingAlgorithm]\t CUpnpCdsReaderAO::\
+CompleteRequestL" );
+
+    if ( !IsActive() )
+        {
+        SetActive();
+        }
+    else
+        {
+        User::Leave( KErrInUse );
+        }
+
+    // Wait for request to complete
+    WaitRequestToComplete();
+
+    // Leave if error happens
+    if ( iStatus.Int() != KErrNone &&
+         iStatus.Int() != KErrNotFound )
+        {
+        User::Leave( iStatus.Int() );
+        }
+    }
+
+//  End of File