1 files changed, 102 insertions, 0 deletions
diff --git a/src/boost/libs/graph/example/reachable-loop-head.cpp b/src/boost/libs/graph/example/reachable-loop-head.cpp
new file mode 100644
index 00000000..eedd4b06
--- /dev/null
+++ b/src/boost/libs/graph/example/reachable-loop-head.cpp
@@ -0,0 +1,102 @@
+//=======================================================================
+// 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/graph/adjacency_list.hpp>
+#include <boost/graph/depth_first_search.hpp>
+#include <boost/graph/graphviz.hpp>
+#include <boost/graph/copy.hpp>
+
+int
+main(int argc, char *argv[])
+{
+  if (argc < 3) {
+    std::cerr << "usage: reachable-loop-head.exe <in-file> <out-file>"
+      << std::endl;
+    return -1;
+  }
+  using namespace boost;
+  GraphvizDigraph g;
+  read_graphviz(argv[1], g);
+  graph_traits < GraphvizDigraph >::vertex_descriptor loop_head = 1;
+  typedef color_traits < default_color_type > Color;
+
+  std::vector < default_color_type >
+    reachable_from_head(num_vertices(g), Color::white());
+  default_color_type c;
+  depth_first_visit(g, loop_head, default_dfs_visitor(),
+                    make_iterator_property_map(reachable_from_head.begin(),
+                                               get(vertex_index, g), c));
+
+  property_map<GraphvizDigraph, vertex_attribute_t>::type
+    vattr_map = get(vertex_attribute, g);
+
+  graph_traits < GraphvizDigraph >::vertex_iterator i, i_end;
+  for (boost::tie(i, i_end) = vertices(g); i != i_end; ++i)
+    if (reachable_from_head[*i] != Color::white()) {
+      vattr_map[*i]["color"] = "gray";
+      vattr_map[*i]["style"] = "filled";
+    }
+
+  std::ofstream loops_out(argv[2]);
+#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
+  // VC++ has trouble with the get_property() functions
+  loops_out << "digraph G  {\n"
+            << "size=\"3,3\"\n"
+            << "ratio=\"fill\"\n"
+            << "shape=\"box\"\n";
+  graph_traits<GraphvizDigraph>::vertex_iterator vi, vi_end;
+  for (boost::tie(vi, vi_end) = vertices(g); vi != vi_end; ++vi) {
+    loops_out << *vi << "[";
+    for (std::map<std::string,std::string>::iterator ai = vattr_map[*vi].begin();
+         ai != vattr_map[*vi].end(); ++ai) {
+      loops_out << ai->first << "=" << ai->second;
+      if (next(ai) != vattr_map[*vi].end())
+        loops_out << ", ";
+    }
+    loops_out<< "]";
+  }
+  property_map<GraphvizDigraph, edge_attribute_t>::type
+    eattr_map = get(edge_attribute, g);
+  graph_traits<GraphvizDigraph>::edge_iterator ei, ei_end;
+  for (boost::tie(ei, ei_end) = edges(g); ei != ei_end; ++ei) {
+    loops_out << source(*ei, g) << " -> " << target(*ei, g) << "[";
+    std::map<std::string,std::string>& attr_map = eattr_map[*ei];
+    for (std::map<std::string,std::string>::iterator eai = attr_map.begin();
+         eai != attr_map.end(); ++eai) {
+      loops_out << eai->first << "=" << eai->second;
+      if (next(eai) != attr_map.end())
+        loops_out << ", ";
+    }
+    loops_out<< "]";
+  }
+  loops_out << "}\n";
+#else
+  get_property(g, graph_graph_attribute)["size"] = "3,3";
+  get_property(g, graph_graph_attribute)["ratio"] = "fill";
+  get_property(g, graph_vertex_attribute)["shape"] = "box";
+
+  write_graphviz(loops_out, g,
+                 make_vertex_attributes_writer(g),
+                 make_edge_attributes_writer(g),
+                 make_graph_attributes_writer(g));
+#endif
+
+
+  return EXIT_SUCCESS;
+}