113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//=======================================================================
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#include <boost/config.hpp>
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <boost/graph/adjacency_list.hpp>
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using namespace boost;
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template < typename Graph, typename VertexNamePropertyMap > void
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read_graph_file(std::istream & graph_in, std::istream & name_in,
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Graph & g, VertexNamePropertyMap name_map)
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{
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typedef typename graph_traits < Graph >::vertices_size_type size_type;
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size_type n_vertices;
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typename graph_traits < Graph >::vertex_descriptor u;
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typename property_traits < VertexNamePropertyMap >::value_type name;
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graph_in >> n_vertices; // read in number of vertices
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for (size_type i = 0; i < n_vertices; ++i) { // Add n vertices to the graph
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u = add_vertex(g);
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name_in >> name;
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put(name_map, u, name); // ** Attach name property to vertex u **
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}
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size_type src, targ;
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while (graph_in >> src) // Read in edges
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if (graph_in >> targ)
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add_edge(src, targ, g); // add an edge to the graph
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else
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break;
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}
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template < typename Graph, typename VertexNameMap > void
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output_out_edges(std::ostream & out, const Graph & g,
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typename graph_traits < Graph >::vertex_descriptor u,
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VertexNameMap name_map)
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{
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typename graph_traits < Graph >::out_edge_iterator ei, ei_end;
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for (boost::tie(ei, ei_end) = out_edges(u, g); ei != ei_end; ++ei)
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out << get(name_map, source(*ei, g)) << " -> "
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<< get(name_map, target(*ei, g)) << std::endl;
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}
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template < typename NameMap > class name_equals_t {
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public:
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name_equals_t(const std::string & n, NameMap map)
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: m_name(n), m_name_map(map)
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{
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}
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template < typename Vertex > bool operator()(Vertex u) const
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{
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return get(m_name_map, u) == m_name;
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}
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private:
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std::string m_name;
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NameMap m_name_map;
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};
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// object generator function
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template < typename NameMap >
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inline name_equals_t < NameMap >
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name_equals(const std::string & str, NameMap name)
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{
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return name_equals_t < NameMap > (str, name);
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}
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int
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main(int argc, const char** argv)
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{
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typedef adjacency_list < listS, // Store out-edges of each vertex in a std::list
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vecS, // Store vertex set in a std::vector
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directedS, // The graph is directed
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property < vertex_name_t, std::string > // Add a vertex property
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>graph_type;
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graph_type g; // use default constructor to create empty graph
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const char* dep_file_name = argc >= 2 ? argv[1] : "makefile-dependencies.dat";
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const char* target_file_name = argc >= 3 ? argv[2] : "makefile-target-names.dat";
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std::ifstream file_in(dep_file_name), name_in(target_file_name);
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if (!file_in) {
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std::cerr << "** Error: could not open file " << dep_file_name
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<< std::endl;
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return -1;
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}
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if (!name_in) {
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std::cerr << "** Error: could not open file " << target_file_name
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<< std::endl;
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return -1;
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}
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// Obtain internal property map from the graph
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property_map < graph_type, vertex_name_t >::type name_map =
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get(vertex_name, g);
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read_graph_file(file_in, name_in, g, name_map);
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graph_traits < graph_type >::vertex_iterator i, end;
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boost::tie(i, end) = vertices(g);
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typedef property_map < graph_type, vertex_name_t >::type name_map_t;
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name_equals_t < name_map_t > predicate("dax.h", get(vertex_name, g));
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i = std::find_if(i, end, predicate);
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output_out_edges(std::cout, g, *i, get(vertex_name, g));
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assert(num_vertices(g) == 15);
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assert(num_edges(g) == 19);
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return 0;
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}
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