Merge switch configurations that yield with the same effective wiring

for "Analyze Guitar Wirings" module, for more compact report

diylc/diylc-library/src/org/diylc/netlist/GuitarDiagramAnalyzer.java

@@ -22,6 +22,7 @@
 package org.diylc.netlist;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
@@ -85,11 +86,18 @@ public class GuitarDiagramAnalyzer extends NetlistAnalyzer implements INetlistAn
   }
     
   public List<Summary> summarize(List<Netlist> netlists, Node preferredOutput) throws TreeException {    
-    List<Summary> summaries = new ArrayList<Summary>();
-    for (Netlist n : netlists)
-      summaries.add(summarize(n, preferredOutput));
+    Map<String, Summary> summaries = new HashMap<String, Summary>();
+    for (Netlist n : netlists) {
+      Summary s = summarize(n, preferredOutput);
+      if (summaries.containsKey(s.getSummary()))
+        summaries.get(s.getSummary()).append(n);
+      else
+        summaries.put(s.getSummary(), s);
+    }
     
-    return summaries;
+    List<Summary> res = new ArrayList<Summary>(summaries.values());
+    Collections.sort(res);
+    return res;
   }
   
   private int positiveCount;