reachable-loop-head.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>
int main(int argc, char* argv[])
{
if (argc < 3)
{
std::cerr << "usage: reachable-loop-head.exe <in-file> <out-file>"
<< std::endl;
return -1;
}
using namespace boost;
GraphvizDigraph g;
read_graphviz(argv[1], g);
graph_traits< GraphvizDigraph >::vertex_descriptor loop_head = 1;
typedef color_traits< default_color_type > Color;
std::vector< default_color_type > reachable_from_head(
num_vertices(g), Color::white());
default_color_type c;
depth_first_visit(g, loop_head, default_dfs_visitor(),
make_iterator_property_map(
reachable_from_head.begin(), get(vertex_index, g), c));
property_map< GraphvizDigraph, 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); i != i_end; ++i)
if (reachable_from_head[*i] != Color::white())
{
vattr_map[*i]["color"] = "gray";
vattr_map[*i]["style"] = "filled";
}
std::ofstream loops_out(argv[2]);
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
// VC++ has trouble with the get_property() functions
loops_out << "digraph G {\n"
<< "size=\"3,3\"\n"
<< "ratio=\"fill\"\n"
<< "shape=\"box\"\n";
graph_traits< GraphvizDigraph >::vertex_iterator vi, vi_end;
for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi)
{
loops_out << *vi << "[";
for (std::map< std::string, std::string >::iterator ai
= vattr_map[*vi].begin();
ai != vattr_map[*vi].end(); ++ai)
{
loops_out << ai->first << "=" << ai->second;
if (next(ai) != vattr_map[*vi].end())
loops_out << ", ";
}
loops_out << "]";
}
property_map< GraphvizDigraph, edge_attribute_t >::type eattr_map
= get(edge_attribute, g);
graph_traits< GraphvizDigraph >::edge_iterator ei, ei_end;
for (boost::tie(ei, ei_end) = edges(g); ei != ei_end; ++ei)
{
loops_out << source(*ei, g) << " -> " << target(*ei, g) << "[";
std::map< std::string, std::string >& attr_map = eattr_map[*ei];
for (std::map< std::string, std::string >::iterator eai
= attr_map.begin();
eai != attr_map.end(); ++eai)
{
loops_out << eai->first << "=" << eai->second;
if (next(eai) != attr_map.end())
loops_out << ", ";
}
loops_out << "]";
}
loops_out << "}\n";
#else
get_property(g, graph_graph_attribute)["size"] = "3,3";
get_property(g, graph_graph_attribute)["ratio"] = "fill";
get_property(g, graph_vertex_attribute)["shape"] = "box";
write_graphviz(loops_out, g, make_vertex_attributes_writer(g),
make_edge_attributes_writer(g), make_graph_attributes_writer(g));
#endif
return EXIT_SUCCESS;
}