--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmserv/radioutility/presetutility/src/cenrepbookkeeping.cpp	Mon May 03 12:59:52 2010 +0300
@@ -0,0 +1,281 @@
+/*
+* 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:
+*
+*
+*/
+
+#include <s32mem.h> // RWriteStream, RReadStream
+
+#include "cenrepbookkeeping.h"
+#include "trace.h"
+
+
+const TUint8 KNbrOfBitsPerByte = 8;
+
+
+#define BITSPERLWORD ( sizeof(iBookKeepingData.iUsedIndexLWords[0]) * KNbrOfBitsPerByte)
+
+
+// ============= MEMBER FUNCTIONS ==============
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CCenrepBookKeeping::CCenrepBookKeeping()
+    {
+    FUNC_LOG;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+CCenrepBookKeeping::~CCenrepBookKeeping()
+    {
+    FUNC_LOG;
+    Clear();
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCenrepBookKeeping::PresetCount() const
+    {
+    FUNC_LOG;
+    return iBookKeepingData.iCount;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCenrepBookKeeping::FirstIndex() const
+    {
+    FUNC_LOG;
+    TInt retIndex( KErrGeneral );
+    TUint32 bitMask( 0 );
+    for ( TInt lwordOffset = 0; ; ++lwordOffset)
+        {
+        if ( 0 !=iBookKeepingData.iUsedIndexLWords[lwordOffset] )
+            {
+            bitMask = 1;
+            for ( TUint8 bitOffset( 0 ); BITSPERLWORD > bitOffset; ++bitOffset )
+                {
+                if ( KMaxNumberOfPresetStations <= ( ( BITSPERLWORD * lwordOffset ) + bitOffset ) )
+                    {
+                    retIndex = KErrNotFound;
+                    break;
+                    }
+                if ( 0 != ( iBookKeepingData.iUsedIndexLWords[lwordOffset] & bitMask) )
+                    {
+                    retIndex = ( BITSPERLWORD * lwordOffset ) + bitOffset;
+                    break;
+                    }
+                bitMask = bitMask << 1;                
+                }
+            }
+        else if ( KMaxNumberOfPresetStations < ( BITSPERLWORD * (lwordOffset + 1) ) )
+            {
+            retIndex = KErrNotFound;
+            break;            
+            }
+        if ( KErrGeneral != retIndex )
+            {
+            break;
+            }
+        }
+    INFO_1( "retIndex: %i", retIndex );
+    return retIndex;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCenrepBookKeeping::NextIndex( TInt aFromIndex )
+    {
+    FUNC_LOG;
+    TInt retIndex( KErrGeneral );
+    TInt startIndex( aFromIndex + 1 );
+    TUint32 bitMask( 0 );
+    TUint8 bitOffset( 0 );
+    for ( TInt lwordOffset(startIndex/BITSPERLWORD); ; ++lwordOffset)
+        {
+        if ( lwordOffset == (startIndex/BITSPERLWORD) )
+            {
+            bitMask = 1 << (startIndex%BITSPERLWORD);
+            bitOffset = (startIndex%BITSPERLWORD);
+            }
+        else
+            {
+            bitMask = 1;
+            bitOffset = 0;
+            }
+        if ( 0 !=iBookKeepingData.iUsedIndexLWords[lwordOffset] )
+            {            
+            for ( ; BITSPERLWORD > bitOffset; ++bitOffset )
+                {
+                if ( KMaxNumberOfPresetStations <=  ( ( BITSPERLWORD * lwordOffset ) + bitOffset ) )
+                    {
+                    retIndex = KErrNotFound;
+                    break;
+                    }
+                if ( 0 != ( iBookKeepingData.iUsedIndexLWords[lwordOffset] & bitMask) )
+                    {
+                    retIndex = ( BITSPERLWORD * lwordOffset ) + bitOffset;
+                    break;
+                    }
+                bitMask = bitMask << 1;                
+                }
+            }
+        else if ( KMaxNumberOfPresetStations < ( BITSPERLWORD * (lwordOffset + 1) ) )
+            {
+            retIndex = KErrNotFound;
+            break;            
+            }
+        if ( KErrGeneral != retIndex )
+            {
+            break;
+            }
+        }
+    INFO_1( "retIndex: %i", retIndex );
+    return retIndex;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CCenrepBookKeeping::AddIndex( const TInt aIndex )
+    {
+    FUNC_LOG;
+    if  (
+        ( KMaxNumberOfPresetStations >iBookKeepingData.iCount ) &&
+        ( !IsIndexUsed( aIndex ) )
+    )
+        {
+        TInt lwordOffset(aIndex/BITSPERLWORD);
+        TUint bitOffset( (aIndex%BITSPERLWORD) );
+        TUint32 bitMask( 1 );
+        bitMask  = bitMask << bitOffset;
+       iBookKeepingData.iUsedIndexLWords[lwordOffset] |= bitMask;    
+        ++iBookKeepingData.iCount;       
+        }
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CCenrepBookKeeping::RemoveIndex( const TInt aIndex )
+    {
+    FUNC_LOG;
+    if  ( 
+        ( 0 <iBookKeepingData.iCount ) &&
+        ( IsIndexUsed( aIndex ) )
+    ) 
+        {
+        TInt lwordOffset(aIndex/BITSPERLWORD);
+        TUint bitOffset( (aIndex%BITSPERLWORD) );
+        TUint32 bitMask( 1 );
+        bitMask = bitMask << bitOffset;
+        bitMask = ~bitMask;
+       iBookKeepingData.iUsedIndexLWords[lwordOffset] &= bitMask;    
+        --iBookKeepingData.iCount;       
+        }
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+void CCenrepBookKeeping::Clear()
+    {
+    FUNC_LOG;
+    for ( TInt lwordOffset(0); LENGTHOFUSEDINDEXLWORDSARRAY > lwordOffset; ++lwordOffset)
+        {
+       iBookKeepingData.iUsedIndexLWords[lwordOffset] = 0;
+        }
+   iBookKeepingData.iCount = 0;    
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TInt CCenrepBookKeeping::FindUnusedIndex() const
+    {
+    FUNC_LOG;
+    TInt retIndex( KErrGeneral );
+    TUint32 bitMask( 0 );
+    for ( TInt lwordOffset = 0; ; ++lwordOffset)
+        {
+        if ( 0xFFFFFFFF !=iBookKeepingData.iUsedIndexLWords[lwordOffset] )
+            {
+            bitMask = 1;
+            for ( TUint8 bitOffset = 0; BITSPERLWORD > bitOffset; ++bitOffset )
+                {
+                if ( KMaxNumberOfPresetStations <=  ( ( BITSPERLWORD * lwordOffset ) + bitOffset ) )
+                    {
+                    retIndex = KErrNotFound;
+                    break;
+                    }
+                if ( 0 == ( iBookKeepingData.iUsedIndexLWords[lwordOffset] & bitMask) )
+                    {
+                    retIndex = ( BITSPERLWORD * lwordOffset ) + bitOffset;
+                    break;
+                    }
+                bitMask = bitMask << 1;                
+                }
+            }
+        else if ( KMaxNumberOfPresetStations < ( BITSPERLWORD * (lwordOffset + 1) ) )
+            {
+            retIndex = KErrNotFound;
+            break;            
+            }
+        if ( KErrGeneral != retIndex )
+            {
+            break;
+            }
+        }
+    INFO_1( "retIndex: %i", retIndex );
+    return retIndex;
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TBool CCenrepBookKeeping::IsIndexUsed( const TInt aIndex )
+    {
+    FUNC_LOG;
+    TInt lwordOffset(aIndex/BITSPERLWORD);
+    TUint bitOffset( (aIndex%BITSPERLWORD) );
+    TUint32 bitMask( 1 );
+    bitMask = bitMask << bitOffset;
+    return ( iBookKeepingData.iUsedIndexLWords[lwordOffset] & bitMask);    
+    }
+
+// ---------------------------------------------------------------------------
+//
+// ---------------------------------------------------------------------------
+//
+TPtr8 CCenrepBookKeeping::BookKeepingData()
+    {
+    TPtr8 bookKeepingData( (TUint8*)&iBookKeepingData, sizeof( iBookKeepingData ), sizeof( iBookKeepingData ) );
+    return bookKeepingData;
+    }