#include <iostream>

#include <lemon/smart_graph.h>

#include <lemon/invalid.h>

#include <lemon/graph_reader.h>

#include <lemon/graph_writer.h>

using namespace lemon;

int main() {

  SmartGraph graph;

  try {

    std::string filename="sample.lgf";

    GraphReader<SmartGraph> reader(filename,graph);

    SmartGraph::EdgeMap<int> cap(graph);

    reader.readEdgeMap("capacity",cap);

    reader.run();

    std::cout << "Hello! We have read a graph from file " << filename<< 

      " and some maps on it: now we write this to the standard output!" << 

      std::endl;

    GraphWriter<SmartGraph> writer(std::cout, graph);

    writer.writeEdgeMap("multiplicity", cap);

//     writer.writeNode("source", s);

//     writer.writeNode("target", t);

    writer.run();

  } catch (DataFormatError& error) {

    std::cerr << error.what() << std::endl;

  }

  return 0;

}