//=======================================================================
// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================

/*
   IMPORTANT!!!
   ~~~~~~~~~~~~
   This example uses interfaces that have been deprecated and removed from
   Boost.Grpah. Someone needs to update it, as it does NOT compile.
*/

#include <boost/config.hpp>
#include <fstream>
#include <vector>
#include <string>
#include <boost/graph/connected_components.hpp>
#include <boost/graph/graphviz.hpp>

int main()
{
    using namespace boost;
    GraphvizGraph g;
    read_graphviz("figs/cc-internet.dot", g);

    std::vector< int > component(num_vertices(g));

    connected_components(g,
        make_iterator_property_map(
            component.begin(), get(vertex_index, g), component[0]));

    property_map< GraphvizGraph, vertex_attribute_t >::type vertex_attr_map
        = get(vertex_attribute, g);
    std::string color[] = { "white", "gray", "black", "lightgray" };
    graph_traits< GraphvizGraph >::vertex_iterator vi, vi_end;
    for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi)
    {
        vertex_attr_map[*vi]["color"] = color[component[*vi]];
        vertex_attr_map[*vi]["style"] = "filled";
        if (vertex_attr_map[*vi]["color"] == "black")
            vertex_attr_map[*vi]["fontcolor"] = "white";
    }
    write_graphviz("figs/cc-internet-out.dot", g);
}