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63 lines
2.2 KiB
C++
63 lines
2.2 KiB
C++
//=======================================================================
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// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
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//
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// This file is part of the Boost Graph Library
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//
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// You should have received a copy of the License Agreement for the
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// Boost Graph Library along with the software; see the file LICENSE.
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// If not, contact Office of Research, Indiana University,
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// Bloomington, IN 47405.
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//
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// Permission to modify the code and to distribute the code is
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// granted, provided the text of this NOTICE is retained, a notice if
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// the code was modified is included with the above COPYRIGHT NOTICE
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// and with the COPYRIGHT NOTICE in the LICENSE file, and that the
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// LICENSE file is distributed with the modified code.
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//
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// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
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// By way of example, but not limitation, Licensor MAKES NO
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// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
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// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
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// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
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// OR OTHER RIGHTS.
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//=======================================================================
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#include <boost/config.hpp>
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#include <fstream>
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#include <boost/graph/adjacency_list.hpp>
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using namespace boost;
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template < typename Graph > void
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read_graph_file(std::istream & in, Graph & g)
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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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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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add_vertex(g);
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size_type u, v;
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while (in >> u) // Read in pairs of integers as edges
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if (in >> v)
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add_edge(u, v, g);
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else
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break;
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}
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int
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main()
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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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> graph_type;
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graph_type g; // use default constructor to create empty graph
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std::ifstream file_in("makefile-dependencies.dat");
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read_graph_file(file_in, 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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