1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// Copyright 2005 The Trustees of Indiana University.
// Use, modification and distribution is subject to 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)
// Authors: Douglas Gregor
// Andrew Lumsdaine
#include <boost/graph/compressed_sparse_row_graph.hpp>
#include <string>
#include <boost/graph/iteration_macros.hpp>
#include <iostream>
#include <fstream>
#include <boost/graph/graphviz.hpp>
using namespace boost;
class WebPage
{
public:
std::string url;
};
int main()
{
typedef std::pair< int, int > E;
const char* urls[6] = {
"http://www.boost.org/libs/graph/doc/index.html",
"http://www.boost.org/libs/graph/doc/table_of_contents.html",
"http://www.boost.org/libs/graph/doc/adjacency_list.html",
"http://www.boost.org/libs/graph/doc/history.html",
"http://www.boost.org/libs/graph/doc/bundles.html",
"http://www.boost.org/libs/graph/doc/using_adjacency_list.html",
};
E the_edges[] = { E(0, 1), E(0, 2), E(0, 3), E(1, 0), E(1, 3), E(1, 5),
E(2, 0), E(2, 5), E(3, 1), E(3, 4), E(4, 1), E(5, 0), E(5, 2) };
typedef compressed_sparse_row_graph< directedS, WebPage > WebGraph;
WebGraph g(boost::edges_are_sorted, &the_edges[0],
&the_edges[0] + sizeof(the_edges) / sizeof(E), 6);
// Set the URLs of each vertex
int index = 0;
BGL_FORALL_VERTICES(v, g, WebGraph)
g[v].url = urls[index++];
// Output each of the links
std::cout << "The web graph:" << std::endl;
BGL_FORALL_EDGES(e, g, WebGraph)
std::cout << " " << g[source(e, g)].url << " -> " << g[target(e, g)].url
<< std::endl;
// Output the graph in DOT format
dynamic_properties dp;
dp.property("label", get(&WebPage::url, g));
std::ofstream out("web-graph.dot");
write_graphviz_dp(out, g, dp, std::string(), get(vertex_index, g));
return 0;
}
|
