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// Copyright 2008 Trustees of Indiana University
// Use, modification and distribution is subject to 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)
// An example of using read_graphviz to load a GraphViz Dot textual
// graph into a BGL adjacency_list graph that has custom properties.
// Author: Ronald Garcia
#include <boost/graph/graphviz.hpp>
#include <boost/graph/adjacency_list.hpp>
#include <boost/foreach.hpp>
#include <string>
#include <sstream>
using namespace boost;
using namespace std;
//
// Create a custom graph properties
// (see the documentation for adjacency list)
struct graph_identifier_t
{
typedef graph_property_tag kind;
};
struct vertex_label_t
{
typedef vertex_property_tag kind;
};
int main()
{
// Vertex properties
typedef property< vertex_name_t, string,
property< vertex_label_t, string, property< vertex_root_t, int > > >
vertex_p;
// Edge properties
typedef property< edge_name_t, string > edge_p;
// Graph properties
typedef property< graph_name_t, string,
property< graph_identifier_t, string > >
graph_p;
// adjacency_list-based type
typedef adjacency_list< vecS, vecS, directedS, vertex_p, edge_p, graph_p >
graph_t;
// Construct an empty graph and prepare the dynamic_property_maps.
graph_t graph(0);
dynamic_properties dp;
property_map< graph_t, vertex_name_t >::type vname
= get(vertex_name, graph);
dp.property("node_id", vname);
property_map< graph_t, vertex_label_t >::type vlabel
= get(vertex_label_t(), graph);
dp.property("label", vlabel);
property_map< graph_t, vertex_root_t >::type root = get(vertex_root, graph);
dp.property("root", root);
property_map< graph_t, edge_name_t >::type elabel = get(edge_name, graph);
dp.property("label", elabel);
// Use ref_property_map to turn a graph property into a property map
ref_property_map< graph_t*, string > gname(get_property(graph, graph_name));
dp.property("name", gname);
// Use ref_property_map to turn a graph property into a property map
ref_property_map< graph_t*, string > gid(
get_property(graph, graph_identifier_t()));
dp.property("identifier", gid);
// Sample graph as an istream;
const char* dot = "digraph \
{ \
graph [name=\"GRAPH\", identifier=\"CX2A1Z\"] \
\
a [label=\"NODE_A\", root=\"1\"] \
b [label=\"NODE_B\", root=\"0\"] \
\
a -> b [label=\"EDGE_1\"] \
b -> c [label=\"EDGE_2\"] \
}";
istringstream gvgraph(dot);
bool status = read_graphviz(gvgraph, graph, dp, "node_id");
if (!status)
{
cerr << "read_graphviz() failed." << endl;
return -1;
}
cout << "graph " << get("name", dp, &graph) << " ("
<< get("identifier", dp, &graph) << ")\n\n";
BOOST_FOREACH (graph_t::vertex_descriptor v, vertices(graph))
{
cout << "vertex " << get("node_id", dp, v) << " ("
<< get("label", dp, v) << ")\n";
}
return 0;
}
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