reachable-loop-tail.cpp
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//=======================================================================
// 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 <iostream>
#include <fstream>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/depth_first_search.hpp>
#include <boost/graph/graphviz.hpp>
#include <boost/graph/copy.hpp>
#include <boost/graph/reverse_graph.hpp>
int main(int argc, char* argv[])
{
if (argc < 3)
{
std::cerr << "usage: reachable-loop-tail.exe <in-file> <out-file>"
<< std::endl;
return -1;
}
using namespace boost;
GraphvizDigraph g_in;
read_graphviz(argv[1], g_in);
typedef adjacency_list< vecS, vecS, bidirectionalS, GraphvizVertexProperty,
GraphvizEdgeProperty, GraphvizGraphProperty >
Graph;
Graph g;
copy_graph(g_in, g);
graph_traits< GraphvizDigraph >::vertex_descriptor loop_tail = 6;
typedef color_traits< default_color_type > Color;
default_color_type c;
std::vector< default_color_type > reachable_to_tail(num_vertices(g));
reverse_graph< Graph > reverse_g(g);
depth_first_visit(reverse_g, loop_tail, default_dfs_visitor(),
make_iterator_property_map(
reachable_to_tail.begin(), get(vertex_index, g), c));
std::ofstream loops_out(argv[2]);
loops_out << "digraph G {\n"
<< " graph [ratio=\"fill\",size=\"3,3\"];\n"
<< " node [shape=\"box\"];\n"
<< " edge [style=\"bold\"];\n";
property_map< Graph, vertex_attribute_t >::type vattr_map
= get(vertex_attribute, g);
graph_traits< GraphvizDigraph >::vertex_iterator i, i_end;
for (boost::tie(i, i_end) = vertices(g_in); i != i_end; ++i)
{
loops_out << *i << "[label=\"" << vattr_map[*i]["label"] << "\"";
if (reachable_to_tail[*i] != Color::white())
{
loops_out << ", color=\"gray\", style=\"filled\"";
}
loops_out << "]\n";
}
graph_traits< GraphvizDigraph >::edge_iterator e, e_end;
for (boost::tie(e, e_end) = edges(g_in); e != e_end; ++e)
loops_out << source(*e, g) << " -> " << target(*e, g) << ";\n";
loops_out << "}\n";
return EXIT_SUCCESS;
}