diff -r 000000000000 -r 818e61de6cd1 crashanalysercmd/Libraries/Engine/CrashItemLib/Engine/Primer/CIEnginePrimerWorkingSet.cs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crashanalysercmd/Libraries/Engine/CrashItemLib/Engine/Primer/CIEnginePrimerWorkingSet.cs	Thu Feb 11 15:50:58 2010 +0200
@@ -0,0 +1,153 @@
+/*
+* 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:
+*
+*/
+using System;
+using System.IO;
+using System.Collections;
+using System.Collections.Generic;
+using System.Text;
+using CrashItemLib.PluginAPI;
+using CrashItemLib.Crash.Source;
+using CrashItemLib.Engine.Sources;
+
+namespace CrashItemLib.Engine.Primer
+{
+    internal class CIPrimerWorkingSet
+    {
+        #region Constructors
+        public CIPrimerWorkingSet( CIEngine aEngine )
+		{
+            iEngine = aEngine;
+        }
+        #endregion
+
+        #region API
+        public void Clear()
+        {
+            iEntries.Clear();
+        }
+
+        public void Add( CFFSourceAndConfidence aEntry )
+        {
+            // For every single source file we might actually have multiple
+            // plugins that claim they can interpet the contents.
+            // 
+            // Therefore we maintain a dictionary that is keyed by the file name
+            // and contains a list of plugin handlers (and their associatied
+            // confidence level for handling the source file).
+            List<CFFSourceAndConfidence> entries = null;
+            //
+            FileInfo file = aEntry.MasterFile;
+            System.Diagnostics.Debug.Assert( file != null );
+            //
+            if ( !iEntries.ContainsKey( file ) )
+            {
+                entries = new List<CFFSourceAndConfidence>();
+                iEntries.Add( file, entries );
+            }
+            else
+            {
+                entries = iEntries[ file ];
+            }
+            //
+            entries.Add( aEntry );
+        }
+
+        public void Add( IEnumerable<CFFSourceAndConfidence> aEntries )
+        {
+            foreach ( CFFSourceAndConfidence level in aEntries )
+            {
+                Add( level );
+            }
+        }
+
+        public void Rationalise()
+        {
+            // At this point we're ready to decide how we will process the source
+            // files. Some may be trace files, in which case we probably need to multiple
+            // the various plugin handlers (that support trace-based content) so that they
+            // can each have a stab at handling the trace content.
+            //
+            // For native (non-trace) handlers, we only let the handler with the highest
+            // confidence ultimately read the file.
+            //
+            // 1) For any native entries, sort them by priority and discard
+            //    everything but the highest priority entry.
+            //
+            // 2) For any trace entries, then we basically don't need to do anything
+            //    because all entries will require processing via a trace reader.
+            foreach ( KeyValuePair<FileInfo, List<CFFSourceAndConfidence>> kvp in iEntries )
+            {
+                // For native entries relating to this file
+                List<CFFSourceAndConfidence> listNative = new List<CFFSourceAndConfidence>();
+
+                // For trace entries relating to this file
+                List<CFFSourceAndConfidence> listTrace = new List<CFFSourceAndConfidence>();
+
+                FileInfo file = kvp.Key;
+                List<CFFSourceAndConfidence> entries = kvp.Value;
+                foreach ( CFFSourceAndConfidence conf in entries )
+                {
+                    if ( conf.OpType == CFFSource.TReaderOperationType.EReaderOpTypeNative )
+                    {
+                        listNative.Add( conf );
+                    }
+                    else if ( conf.OpType == CFFSource.TReaderOperationType.EReaderOpTypeTrace )
+                    {
+                        listTrace.Add( conf );
+                    }
+                    else
+                    {
+                        // Not supported
+                    }
+                }
+
+                // Sort the native list based upon confidence level
+                Comparison<CFFSourceAndConfidence> comparer = delegate( CFFSourceAndConfidence aLeft, CFFSourceAndConfidence aRight )
+                {
+                    return aLeft.CompareTo( aRight );
+                };
+                listNative.Sort( comparer );
+
+                // Save highest priority native entry - only try to treat the source file as a
+                // trace entry if no native entries claim to be able to read it.
+                if ( listNative.Count > 0 )
+                {
+                    CFFSourceAndConfidence highestConfidence = listNative[ 0 ];
+                    CIEngineSource sourceNative = CIEngineSource.NewNative( iEngine, highestConfidence );
+                    iEngine.Sources.Add( sourceNative );
+                }
+                else if ( listTrace.Count > 0 ) 
+                {
+                    // If we found some trace entries, then immediately store the trace source.
+                    // The listTrace array contains all of the plugins that claim to be able to
+                    // read the trace-based source file.
+                    CIEngineSource sourceTrace = CIEngineSource.NewTrace( iEngine, listTrace.ToArray() );
+                    iEngine.Sources.Add( sourceTrace );
+                }
+            }
+        }
+        #endregion
+
+        #region Properties
+        #endregion
+
+		#region Data members
+        private readonly CIEngine iEngine;
+        private Dictionary< FileInfo, List<CFFSourceAndConfidence> > iEntries = new Dictionary< FileInfo, List<CFFSourceAndConfidence> >();
+        #endregion
+    }
+}