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Label.java

package gov.nasa.arc.ase.util.graph;

import java.io.IOException;

public class Label {
  public static Graph label(Graph g) {
    String type = g.getStringAttribute("type");
    String ac = g.getStringAttribute("ac");

    if(type.equals("gba")) {
      if(ac.equals("nodes")) {
    final int nsets = g.getIntAttribute("nsets");

    g.forAllNodes(new EmptyVisitor() {
      public void visitNode(Node n) {
        n.forAllEdges(new EmptyVisitor() {
          public void visitEdge(Edge e) {
        Node n1 = e.getSource();
        for(int i = 0; i < nsets; i++)
          if(n1.getBooleanAttribute("acc"+i))
            e.setBooleanAttribute("acc"+i, true);
          }
        });
        for(int i = 0; i < nsets; i++)
          n.setBooleanAttribute("acc"+i, false);
      }
    });
      }
      g.setStringAttribute("ac", "edges");
    } else {
      throw new RuntimeException("invalid graph type: " + type);
    }

    return g;
  }  
  public static void main(String[] args) {
    try {
      Graph g = Graph.load(args[0]);
      label(g);
      g.save();
    } catch(IOException e) {
      System.err.println("Can't load file: " + args[0]);
      System.exit(1);
    }
  }  
}

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