| 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 <fstream> |
| 10 | #include <iostream> |
| 11 | #include <string> |
| 12 | #include <boost/graph/adjacency_list.hpp> |
| 13 | #include <boost/graph/graph_utility.hpp> |
| 14 | |
| 15 | using namespace boost; |
| 16 | |
| 17 | namespace std |
| 18 | { |
| 19 | template < typename T > |
| 20 | std::istream& operator>>(std::istream& in, std::pair< T, T >& p) |
| 21 | { |
| 22 | in >> p.first >> p.second; |
| 23 | return in; |
| 24 | } |
| 25 | } |
| 26 | |
| 27 | typedef adjacency_list< listS, // Store out-edges of each vertex in a std::list |
| 28 | vecS, // Store vertex set in a std::vector |
| 29 | directedS // The file dependency graph is directed |
| 30 | > |
| 31 | file_dep_graph; |
| 32 | |
| 33 | typedef graph_traits< file_dep_graph >::vertex_descriptor vertex_t; |
| 34 | typedef graph_traits< file_dep_graph >::edge_descriptor edge_t; |
| 35 | |
| 36 | void topo_sort_dfs( |
| 37 | const file_dep_graph& g, vertex_t u, vertex_t*& topo_order, int* mark) |
| 38 | { |
| 39 | mark[u] = 1; // 1 means visited, 0 means not yet visited |
| 40 | graph_traits< file_dep_graph >::adjacency_iterator vi, vi_end; |
| 41 | for (boost::tie(t0&: vi, t1&: vi_end) = adjacent_vertices(u, g_: g); vi != vi_end; ++vi) |
| 42 | if (mark[*vi] == 0) |
| 43 | topo_sort_dfs(g, u: *vi, topo_order, mark); |
| 44 | |
| 45 | *--topo_order = u; |
| 46 | } |
| 47 | |
| 48 | void topo_sort(const file_dep_graph& g, vertex_t* topo_order) |
| 49 | { |
| 50 | std::vector< int > mark(num_vertices(g_: g), 0); |
| 51 | graph_traits< file_dep_graph >::vertex_iterator vi, vi_end; |
| 52 | for (boost::tie(t0&: vi, t1&: vi_end) = vertices(g_: g); vi != vi_end; ++vi) |
| 53 | if (mark[*vi] == 0) |
| 54 | topo_sort_dfs(g, u: *vi, topo_order, mark: &mark[0]); |
| 55 | } |
| 56 | |
| 57 | int main(int argc, const char** argv) |
| 58 | { |
| 59 | std::ifstream file_in(argc >= 2 ? argv[1] : "makefile-dependencies.dat" ); |
| 60 | typedef graph_traits< file_dep_graph >::vertices_size_type size_type; |
| 61 | size_type n_vertices; |
| 62 | file_in >> n_vertices; // read in number of vertices |
| 63 | std::istream_iterator< std::pair< size_type, size_type > > input_begin( |
| 64 | file_in), |
| 65 | input_end; |
| 66 | #if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 |
| 67 | // VC++ can't handle the iterator constructor |
| 68 | file_dep_graph g(n_vertices); |
| 69 | while (input_begin != input_end) |
| 70 | { |
| 71 | size_type i, j; |
| 72 | boost::tie(i, j) = *input_begin++; |
| 73 | add_edge(i, j, g); |
| 74 | } |
| 75 | #else |
| 76 | file_dep_graph g(input_begin, input_end, n_vertices); |
| 77 | #endif |
| 78 | |
| 79 | std::vector< std::string > name(num_vertices(g_: g)); |
| 80 | std::ifstream name_in(argc >= 3 ? argv[2] : "makefile-target-names.dat" ); |
| 81 | graph_traits< file_dep_graph >::vertex_iterator vi, vi_end; |
| 82 | for (boost::tie(t0&: vi, t1&: vi_end) = vertices(g_: g); vi != vi_end; ++vi) |
| 83 | name_in >> name[*vi]; |
| 84 | |
| 85 | std::vector< vertex_t > order(num_vertices(g_: g)); |
| 86 | topo_sort(g, topo_order: &order[0] + num_vertices(g_: g)); |
| 87 | for (size_type i = 0; i < num_vertices(g_: g); ++i) |
| 88 | std::cout << name[order[i]] << std::endl; |
| 89 | |
| 90 | return 0; |
| 91 | } |
| 92 | |