athos@1583: /* -*- C++ -*-
ladanyi@1636:  * demo/reader_writer_demo.cc - Part of LEMON, a generic C++ optimization
ladanyi@1636:  * library
athos@1583:  *
alpar@1875:  * Copyright (C) 2006 Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
athos@1583:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
athos@1583:  *
athos@1583:  * Permission to use, modify and distribute this software is granted
athos@1583:  * provided that this copyright notice appears in all copies. For
athos@1583:  * precise terms see the accompanying LICENSE file.
athos@1583:  *
athos@1583:  * This software is provided "AS IS" with no warranty of any kind,
athos@1583:  * express or implied, and with no claim as to its suitability for any
athos@1583:  * purpose.
athos@1583:  *
athos@1583:  */
athos@1583: 
athos@1583: ///\ingroup demos
athos@1583: ///\file
athos@1583: ///\brief Demonstrating graph input and output
athos@1583: ///
athos@1583: /// This simple demo program gives an example of how to read and write
athos@1583: /// a graph and additional maps (on the nodes or the edges) from/to a
athos@1583: /// stream. 
alpar@1641: ///
alpar@1641: /// \include reader_writer_demo.cc
athos@1583: 
athos@1528: #include <iostream>
athos@1528: #include <lemon/smart_graph.h>
athos@1528: #include <lemon/graph_reader.h>
athos@1528: #include <lemon/graph_writer.h>
athos@1528: 
athos@1528: 
athos@1528: using namespace lemon;
athos@1528: 
athos@1528: int main() {
athos@1528:   SmartGraph graph;
athos@1528: 
athos@1528:   try {
athos@1528:     std::string filename="sample.lgf";
athos@1528:     GraphReader<SmartGraph> reader(filename,graph);
athos@1528:     SmartGraph::EdgeMap<int> cap(graph);
athos@1528:     reader.readEdgeMap("capacity",cap);
athos@1528:     reader.run();
athos@1528: 
athos@1528:     std::cout << "Hello! We have read a graph from file " << filename<< 
athos@1583:       " and some maps on it:\n now we write it to the standard output!" << 
athos@1528:       std::endl;
athos@1528: 
athos@1528: 
athos@1528:     GraphWriter<SmartGraph> writer(std::cout, graph);
athos@1528:     writer.writeEdgeMap("multiplicity", cap);
athos@1528:     writer.run();
athos@1528:      
athos@1528:   } catch (DataFormatError& error) {
athos@1528:     std::cerr << error.what() << std::endl;
athos@1528:   }
athos@1528: 
athos@1528: 
athos@1528:   return 0;
athos@1528: }