1 //=======================================================================
2 // Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
3 //
4 // Distributed under the Boost Software License, Version 1.0. (See
5 // accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
7 //=======================================================================
8 #include <boost/config.hpp>
9 #include <iostream>
10 #include <fstream>
11 #include <string>
12 #include <boost/graph/adjacency_list.hpp>
13
14 using namespace boost;
15
16 template < typename Graph, typename VertexNamePropertyMap >
read_graph_file(std::istream & graph_in,std::istream & name_in,Graph & g,VertexNamePropertyMap name_map)17 void read_graph_file(std::istream& graph_in, std::istream& name_in, Graph& g,
18 VertexNamePropertyMap name_map)
19 {
20 typedef typename graph_traits< Graph >::vertices_size_type size_type;
21 size_type n_vertices;
22 typename graph_traits< Graph >::vertex_descriptor u;
23 typename property_traits< VertexNamePropertyMap >::value_type name;
24
25 graph_in >> n_vertices; // read in number of vertices
26 for (size_type i = 0; i < n_vertices; ++i)
27 { // Add n vertices to the graph
28 u = add_vertex(g);
29 name_in >> name;
30 put(name_map, u, name); // ** Attach name property to vertex u **
31 }
32 size_type src, targ;
33 while (graph_in >> src) // Read in edges
34 if (graph_in >> targ)
35 add_edge(src, targ, g); // add an edge to the graph
36 else
37 break;
38 }
39
40 template < typename Graph, typename VertexNameMap >
output_out_edges(std::ostream & out,const Graph & g,typename graph_traits<Graph>::vertex_descriptor u,VertexNameMap name_map)41 void output_out_edges(std::ostream& out, const Graph& g,
42 typename graph_traits< Graph >::vertex_descriptor u, VertexNameMap name_map)
43 {
44 typename graph_traits< Graph >::out_edge_iterator ei, ei_end;
45 for (boost::tie(ei, ei_end) = out_edges(u, g); ei != ei_end; ++ei)
46 out << get(name_map, source(*ei, g)) << " -> "
47 << get(name_map, target(*ei, g)) << std::endl;
48 }
49
50 template < typename NameMap > class name_equals_t
51 {
52 public:
name_equals_t(const std::string & n,NameMap map)53 name_equals_t(const std::string& n, NameMap map)
54 : m_name(n), m_name_map(map)
55 {
56 }
operator ()(Vertex u) const57 template < typename Vertex > bool operator()(Vertex u) const
58 {
59 return get(m_name_map, u) == m_name;
60 }
61
62 private:
63 std::string m_name;
64 NameMap m_name_map;
65 };
66
67 // object generator function
68 template < typename NameMap >
name_equals(const std::string & str,NameMap name)69 inline name_equals_t< NameMap > name_equals(
70 const std::string& str, NameMap name)
71 {
72 return name_equals_t< NameMap >(str, name);
73 }
74
main(int argc,const char ** argv)75 int main(int argc, const char** argv)
76 {
77 typedef adjacency_list< listS, // Store out-edges of each vertex in a
78 // std::list
79 vecS, // Store vertex set in a std::vector
80 directedS, // The graph is directed
81 property< vertex_name_t, std::string > // Add a vertex property
82 >
83 graph_type;
84
85 graph_type g; // use default constructor to create empty graph
86 const char* dep_file_name
87 = argc >= 2 ? argv[1] : "makefile-dependencies.dat";
88 const char* target_file_name
89 = argc >= 3 ? argv[2] : "makefile-target-names.dat";
90 std::ifstream file_in(dep_file_name), name_in(target_file_name);
91 if (!file_in)
92 {
93 std::cerr << "** Error: could not open file " << dep_file_name
94 << std::endl;
95 return -1;
96 }
97 if (!name_in)
98 {
99 std::cerr << "** Error: could not open file " << target_file_name
100 << std::endl;
101 return -1;
102 }
103 // Obtain internal property map from the graph
104 property_map< graph_type, vertex_name_t >::type name_map
105 = get(vertex_name, g);
106 read_graph_file(file_in, name_in, g, name_map);
107
108 graph_traits< graph_type >::vertex_iterator i, end;
109 boost::tie(i, end) = vertices(g);
110 typedef property_map< graph_type, vertex_name_t >::type name_map_t;
111 name_equals_t< name_map_t > predicate("dax.h", get(vertex_name, g));
112 i = std::find_if(i, end, predicate);
113 output_out_edges(std::cout, g, *i, get(vertex_name, g));
114
115 assert(num_vertices(g) == 15);
116 assert(num_edges(g) == 19);
117 return 0;
118 }
119