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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 <fstream>
#include <iostream>
#include <string>
#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/graph_utility.hpp>
using namespace boost;
namespace std
{
template < typename T >
std::istream &
operator >> (std::istream & in, std::pair < T, T > &p)
{
in >> p.first >> p.second;
return
in;
}
}
typedef adjacency_list <
listS, // Store out-edges of each vertex in a std::list
vecS, // Store vertex set in a std::vector
directedS // The file dependency graph is directed
> file_dep_graph;
typedef graph_traits <file_dep_graph >::vertex_descriptor vertex_t;
typedef graph_traits <file_dep_graph >::edge_descriptor edge_t;
template < typename Visitor > void
dfs_v1(const file_dep_graph & g, vertex_t u, default_color_type * color,
Visitor vis)
{
color[u] = gray_color;
vis.discover_vertex(u, g);
graph_traits < file_dep_graph >::out_edge_iterator ei, ei_end;
for (tie(ei, ei_end) = out_edges(u, g); ei != ei_end; ++ei) {
if (color[target(*ei, g)] == white_color) {
vis.tree_edge(*ei, g);
dfs_v1(g, target(*ei, g), color, vis);
} else if (color[target(*ei, g)] == gray_color)
vis.back_edge(*ei, g);
else
vis.forward_or_cross_edge(*ei, g);
}
color[u] = black_color;
vis.finish_vertex(u, g);
}
template < typename Visitor > void
generic_dfs_v1(const file_dep_graph & g, Visitor vis)
{
std::vector < default_color_type > color(num_vertices(g), white_color);
graph_traits < file_dep_graph >::vertex_iterator vi, vi_end;
for (tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
if (color[*vi] == white_color)
dfs_v1(g, *vi, &color[0], vis);
}
}
struct dfs_visitor_default
{
template < typename V, typename G > void
discover_vertex(V, const G &)
{
}
template < typename E, typename G > void
tree_edge(E, const G &)
{
}
template < typename E, typename G > void
back_edge(E, const G &)
{
}
template < typename E, typename G > void
forward_or_cross_edge(E, const G &)
{
}
template < typename V, typename G > void
finish_vertex(V, const G &)
{
}
};
struct topo_visitor : public dfs_visitor_default
{
topo_visitor(vertex_t * &order) : topo_order(order)
{
}
void
finish_vertex(vertex_t u, const file_dep_graph &)
{
*--topo_order = u;
}
vertex_t*& topo_order;
};
void
topo_sort(const file_dep_graph & g, vertex_t * topo_order)
{
topo_visitor vis(topo_order);
generic_dfs_v1(g, vis);
}
int
main()
{
std::ifstream file_in("makefile-dependencies.dat");
typedef graph_traits<file_dep_graph>::vertices_size_type size_type;
size_type n_vertices;
file_in >> n_vertices; // read in number of vertices
std::istream_iterator < std::pair < size_type,
size_type > >input_begin(file_in), input_end;
#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
// VC++ can't handle the iterator constructor
file_dep_graph g(n_vertices);
while (input_begin != input_end) {
size_type i, j;
tie(i, j) = *input_begin++;
add_edge(i, j, g);
}
#else
file_dep_graph g(input_begin, input_end, n_vertices);
#endif
std::vector < std::string > name(num_vertices(g));
std::ifstream name_in("makefile-target-names.dat");
graph_traits < file_dep_graph >::vertex_iterator vi, vi_end;
for (tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi)
name_in >> name[*vi];
std::vector < vertex_t > order(num_vertices(g));
topo_sort(g, &order[0] + num_vertices(g));
for (size_type i = 0; i < num_vertices(g); ++i)
std::cout << name[order[i]] << std::endl;
return 0;
}
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