Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 66 insertions, 0 deletions

diff --git a/src/boost/libs/graph/example/kruskal-telephone.cpp b/src/boost/libs/graph/example/kruskal-telephone.cpp
new file mode 100644
index 00000000..614775b6
--- /dev/null
+++ b/src/boost/libs/graph/example/kruskal-telephone.cpp
@@ -0,0 +1,66 @@
+//=======================================================================
+// 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)
+//=======================================================================
+
+/*
+   IMPORTANT!!!
+   ~~~~~~~~~~~~
+   This example uses interfaces that have been deprecated and removed from Boost.Grpah.
+   Someone needs to update it, as it does NOT compile.
+*/
+
+
+#include <boost/config.hpp>
+#include <iostream>
+#include <fstream>
+#include <boost/lexical_cast.hpp>
+#include <boost/graph/graphviz.hpp>
+#include <boost/graph/kruskal_min_spanning_tree.hpp>
+
+int
+main()
+{
+  using namespace boost;
+  GraphvizGraph g_dot;
+  read_graphviz("figs/telephone-network.dot", g_dot);
+
+  typedef adjacency_list < vecS, vecS, undirectedS, no_property,
+    property < edge_weight_t, int > > Graph;
+  Graph g(num_vertices(g_dot));
+  property_map < GraphvizGraph, edge_attribute_t >::type
+    edge_attr_map = get(edge_attribute, g_dot);
+  graph_traits < GraphvizGraph >::edge_iterator ei, ei_end;
+  for (boost::tie(ei, ei_end) = edges(g_dot); ei != ei_end; ++ei) {
+    int weight = lexical_cast < int >(edge_attr_map[*ei]["label"]);
+    property < edge_weight_t, int >edge_property(weight);
+    add_edge(source(*ei, g_dot), target(*ei, g_dot), edge_property, g);
+  }
+
+  std::vector < graph_traits < Graph >::edge_descriptor > mst;
+  typedef std::vector < graph_traits < Graph >::edge_descriptor >::size_type size_type;
+  kruskal_minimum_spanning_tree(g, std::back_inserter(mst));
+
+  property_map < Graph, edge_weight_t >::type weight = get(edge_weight, g);
+  int total_weight = 0;
+  for (size_type e = 0; e < mst.size(); ++e)
+    total_weight += get(weight, mst[e]);
+  std::cout << "total weight: " << total_weight << std::endl;
+
+  typedef graph_traits < Graph >::vertex_descriptor Vertex;
+  for (size_type i = 0; i < mst.size(); ++i) {
+    Vertex u = source(mst[i], g), v = target(mst[i], g);
+    edge_attr_map[edge(u, v, g_dot).first]["color"] = "black";
+  }
+  std::ofstream out("figs/telephone-mst-kruskal.dot");
+  graph_property < GraphvizGraph, graph_edge_attribute_t >::type &
+    graph_edge_attr_map = get_property(g_dot, graph_edge_attribute);
+  graph_edge_attr_map["color"] = "gray";
+  graph_edge_attr_map["style"] = "bold";
+  write_graphviz(out, g_dot);
+
+  return EXIT_SUCCESS;
+}