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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)
//=======================================================================
#include <boost/config.hpp>
#include <iostream>
#include <fstream>
#include <string>
#include <boost/graph/adjacency_list.hpp>
using namespace boost;
template < typename Graph, typename VertexNamePropertyMap >
void read_graph_file(std::istream& graph_in, std::istream& name_in, Graph& g,
VertexNamePropertyMap name_map)
{
typedef typename graph_traits< Graph >::vertices_size_type size_type;
size_type n_vertices;
typename graph_traits< Graph >::vertex_descriptor u;
typename property_traits< VertexNamePropertyMap >::value_type name;
graph_in >> n_vertices; // read in number of vertices
for (size_type i = 0; i < n_vertices; ++i)
{ // Add n vertices to the graph
u = add_vertex(g);
name_in >> name;
put(name_map, u, name); // ** Attach name property to vertex u **
}
size_type src, targ;
while (graph_in >> src) // Read in edges
if (graph_in >> targ)
add_edge(src, targ, g); // add an edge to the graph
else
break;
}
template < typename Graph, typename VertexNameMap >
void output_adjacent_vertices(std::ostream& out,
typename graph_traits< Graph >::vertex_descriptor u, const Graph& g,
VertexNameMap name_map)
{
typename graph_traits< Graph >::adjacency_iterator vi, vi_end;
out << get(name_map, u) << " -> { ";
for (boost::tie(vi, vi_end) = adjacent_vertices(u, g); vi != vi_end; ++vi)
out << get(name_map, *vi) << " ";
out << "}" << std::endl;
}
template < typename NameMap > class name_equals_t
{
public:
name_equals_t(const std::string& n, NameMap map)
: m_name(n), m_name_map(map)
{
}
template < typename Vertex > bool operator()(Vertex u) const
{
return get(m_name_map, u) == m_name;
}
private:
std::string m_name;
NameMap m_name_map;
};
// object generator function
template < typename NameMap >
inline name_equals_t< NameMap > name_equals(
const std::string& str, NameMap name)
{
return name_equals_t< NameMap >(str, name);
}
int main(int argc, const char** argv)
{
typedef adjacency_list< listS, // Store out-edges of each vertex in a
// std::list
vecS, // Store vertex set in a std::vector
directedS, // The graph is directed
property< vertex_name_t, std::string > // Add a vertex property
>
graph_type;
graph_type g; // use default constructor to create empty graph
const char* dep_file_name
= argc >= 2 ? argv[1] : "makefile-dependencies.dat";
const char* target_file_name
= argc >= 3 ? argv[2] : "makefile-target-names.dat";
std::ifstream file_in(dep_file_name), name_in(target_file_name);
if (!file_in)
{
std::cerr << "** Error: could not open file " << dep_file_name
<< std::endl;
return -1;
}
if (!name_in)
{
std::cerr << "** Error: could not open file " << target_file_name
<< std::endl;
return -1;
}
// Obtain internal property map from the graph
property_map< graph_type, vertex_name_t >::type name_map
= get(vertex_name, g);
read_graph_file(file_in, name_in, g, name_map);
graph_traits< graph_type >::vertex_iterator i, end;
boost::tie(i, end) = vertices(g);
i = std::find_if(i, end, name_equals("dax.h", get(vertex_name, g)));
output_adjacent_vertices(std::cout, *i, g, get(vertex_name, g));
assert(num_vertices(g) == 15);
assert(num_edges(g) == 19);
return 0;
}
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