Fix for bug 60491

Added working copy filtering to search engine
	From now on only relevent working copies are considered for search
	If no index paths are found then search will return no results regardless of any working copies passed in

core/org.eclipse.cdt.core/search/ChangeLog

@@ -1,3 +1,9 @@
+2004-05-14 Bogdan Gheorghe
+	bug 60491 
+	Added working copy filtering to search engine
+	From now on only relevent working copies are considered for search
+	If no index paths are found then search will return no results regardless of any working copies passed in
+	
 2004-05-14 Andrew Niefer
 	bug 56411 - Added IndexingJob show that indexing shows up in the process view
       - this allows for the index job to be cancelled, which pauses indexing until someone requests something

core/org.eclipse.cdt.core/search/org/eclipse/cdt/core/search/SearchEngine.java

@@ -210,8 +210,10 @@ public class SearchEngine implements ICSearchConstants{
 			if( progressMonitor != null )
 				progressMonitor.subTask( Util.bind( "engine.searching" ) );
 			
-			//TODO: BOG Filter Working Copies...
-			matchLocator.locateMatches( pathCollector.getPaths(), workspace, this.workingCopies, matches);
+			String[] indexerPaths = pathCollector.getPaths();
+			pathCollector = null; // release
+			
+			matchLocator.locateMatches( indexerPaths, workspace, filterWorkingCopies(this.workingCopies, scope), matches);
 		} finally {
 			AcceptMatchOperation acceptMatchOp = new AcceptMatchOperation(collector, matches);
 			try {
@@ -219,4 +221,31 @@ public class SearchEngine implements ICSearchConstants{
 			} catch (CoreException e) {}
 		}
 	}
+
+	/**
+	 * @param copies
+	 * @param scope
+	 * @return
+	 */
+	private IWorkingCopy[] filterWorkingCopies(IWorkingCopy[] copies, ICSearchScope scope) {
+		
+		if (copies == null || 
+			copies.length == 0)
+			return copies;
+		
+		int length = copies.length;
+		IWorkingCopy[] results= new IWorkingCopy[length];
+		int index=0;
+
+		for (int i=0;i<length;i++){
+		  IWorkingCopy workingCopy = copies[i];
+		  if(scope.encloses(workingCopy.getPath().toOSString())){
+		  	results[index++]=workingCopy;
+		  }
+		}
+		
+		System.arraycopy(results,0,results= new IWorkingCopy[index],0,index);
+		
+		return results;
+	}
 }

core/org.eclipse.cdt.core/search/org/eclipse/cdt/internal/core/search/matching/MatchLocator.java

@@ -344,6 +344,10 @@ public class MatchLocator implements IMatchLocator{
 		
    
 	public void locateMatches( String [] paths, IWorkspace workspace, IWorkingCopy[] workingCopies,ArrayList matches ) throws InterruptedException{
+		
+		if (!(paths.length > 0))
+			return;
+		
 		matchStorage = matches;
 		workspaceRoot = (workspace != null) ? workspace.getRoot() : null;