contentstorage/srvsrc/casrvmmchistory.cpp
changeset 85 7feec50967db
child 80 397d00875918
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/contentstorage/srvsrc/casrvmmchistory.cpp	Tue Mar 23 23:17:02 2010 +0200
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2008 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:  ?Description
+ *
+ */
+
+// INCLUDE FILES
+#include <f32file.h>
+#include <s32file.h>
+#include <sysutil.h>
+#include "casrvmmchistory.h"
+// CONSTANTS
+LOCAL_D const TInt KCaMmcHistoryLength = 2;
+
+// ==================== MEMBER FUNCTIONS ====================
+
+// ---------------------------------------------------------
+// CMenuSrvMmcHistory::LoadL
+// ---------------------------------------------------------
+//
+EXPORT_C void CCaSrvMmcHistory::LoadL( RFs& aFs, const TDesC& aFname )
+    {
+    iMmcList.Reset();
+    TUint att;
+    if( KErrNotFound != aFs.Att( aFname, att ) )
+        {
+        RFileReadStream stream;
+        CleanupClosePushL( stream );
+        User::LeaveIfError( stream.Open( aFs, aFname, EFileStream
+                | EFileShareReadersOnly ) );
+        TInt len = Min( KCaMmcHistoryLength, stream.ReadInt32L() );
+        while( len-- )
+            {
+            iMmcList.AppendL( stream.ReadUint32L() );
+            }
+        CleanupStack::PopAndDestroy( &stream );
+        }
+    }
+
+// ---------------------------------------------------------
+// CMenuSrvMmcHistory::SaveL
+// Method do not work if there is no free space on C drive.
+// ---------------------------------------------------------
+//
+EXPORT_C void CCaSrvMmcHistory::SaveL( RFs& aFs, const TDesC& aFname )
+    {
+    if( SysUtil::DiskSpaceBelowCriticalLevelL( &aFs, 0, EDriveC ) )
+        {
+        return;
+        }
+
+    RFileWriteStream stream;
+    CleanupClosePushL( stream );
+    User::LeaveIfError( stream.Replace( aFs, aFname, EFileStream
+            | EFileShareExclusive ) );
+    stream.WriteInt32L( iMmcList.Count() );
+    for( TInt i = 0; i < iMmcList.Count(); i++ )
+        {
+        stream.WriteUint32L( iMmcList[i] );
+        }
+    CleanupStack::PopAndDestroy( &stream );
+    }
+
+// ---------------------------------------------------------
+// CMenuSrvMmcHistory::InsertL
+// ---------------------------------------------------------
+//
+EXPORT_C void CCaSrvMmcHistory::InsertL( TUint aMmc )
+    {
+    TInt i = iMmcList.Find( aMmc );
+    switch( i )
+        {
+        case 0:
+            {
+            // aMmc is already first, do nothing.
+            break;
+            }
+
+        case KErrNotFound:
+            {
+            // aMmc is not in the list. Insert as first.
+            if( iMmcList.Count() == KCaMmcHistoryLength )
+                {
+                // List already full - remove last item to make space.
+                iMmcList.Remove( KCaMmcHistoryLength - 1 );
+                }
+            iMmcList.InsertL( aMmc, 0 );
+            break;
+            }
+
+        default:
+            {
+            // aMmc is in the list, but not first. Move to first place.
+            iMmcList.Remove( i );
+            iMmcList.InsertL( aMmc, 0 );
+            break;
+            }
+        }
+    }
+
+// ---------------------------------------------------------
+// CMenuSrvMmcHistory::Find
+// ---------------------------------------------------------
+//
+EXPORT_C TInt CCaSrvMmcHistory::Find( TUint aMmc )
+    {
+    return iMmcList.Find( aMmc );
+    }
+
+//  End of File