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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:45:59 +0000
commit19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch)
tree42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/graph/example/last-mod-time.cpp
parentInitial commit. (diff)
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Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/graph/example/last-mod-time.cpp')
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diff --git a/src/boost/libs/graph/example/last-mod-time.cpp b/src/boost/libs/graph/example/last-mod-time.cpp
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+//=======================================================================
+// 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 appears to be broken and crashes at runtime, see
+ https://github.com/boostorg/graph/issues/148
+
+*/
+
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+
+#include <boost/config.hpp>
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <ctime>
+#ifdef BOOST_HAS_UNISTD_H
+#include <unistd.h>
+#endif
+#include <sys/stat.h>
+#include <boost/graph/adjacency_list.hpp>
+
+using namespace boost;
+
+template < typename Graph, typename VertexNamePropertyMap >
+void read_graph_file(std::istream& graph_in, std::istream& name_in, Graph& g,
+ VertexNamePropertyMap name_map)
+{
+ typedef typename graph_traits< Graph >::vertices_size_type size_type;
+ size_type n_vertices;
+ typename graph_traits< Graph >::vertex_descriptor u;
+ typename property_traits< VertexNamePropertyMap >::value_type name;
+
+ graph_in >> n_vertices; // read in number of vertices
+ for (size_type i = 0; i < n_vertices; ++i)
+ { // Add n vertices to the graph
+ u = add_vertex(g);
+ name_in >> name;
+ put(name_map, u, name); // ** Attach name property to vertex u **
+ }
+ size_type src, targ;
+ while (graph_in >> src) // Read in edges
+ if (graph_in >> targ)
+ add_edge(src, targ, g); // add an edge to the graph
+ else
+ break;
+}
+
+int main(int argc, const char** argv)
+{
+ typedef adjacency_list< listS, // Store out-edges of each vertex in a
+ // std::list
+ vecS, // Store vertex set in a std::vector
+ directedS, // The graph is directed
+ property< vertex_name_t, std::string > // Add a vertex property
+ >
+ graph_type;
+
+ graph_type g; // use default constructor to create empty graph
+ std::ifstream file_in(argc >= 2 ? argv[1] : "makefile-dependencies.dat"),
+ name_in(argc >= 2 ? argv[1] : "makefile-target-names.dat");
+ if (!file_in)
+ {
+ std::cerr << "** Error: could not open file makefile-target-names.dat"
+ << std::endl;
+ exit(-1);
+ }
+ // Obtain internal property map from the graph
+ property_map< graph_type, vertex_name_t >::type name_map
+ = get(vertex_name, g);
+ read_graph_file(file_in, name_in, g, name_map);
+
+ // Create storage for last modified times
+ std::vector< time_t > last_mod_vec(num_vertices(g));
+ // Create nickname for the property map type
+ typedef iterator_property_map< std::vector< time_t >::iterator,
+ property_map< graph_type, vertex_index_t >::type, time_t, time_t& >
+ iter_map_t;
+ // Create last modified time property map
+ iter_map_t mod_time_map(last_mod_vec.begin(), get(vertex_index, g));
+
+ property_map< graph_type, vertex_name_t >::type name = get(vertex_name, g);
+ struct stat stat_buf;
+ graph_traits< graph_type >::vertex_descriptor u;
+ typedef graph_traits< graph_type >::vertex_iterator vertex_iter_t;
+ std::pair< vertex_iter_t, vertex_iter_t > p;
+ for (p = vertices(g); p.first != p.second; ++p.first)
+ {
+ u = *p.first;
+ if (stat(name[u].c_str(), &stat_buf) != 0)
+ std::cerr << "error in stat() for file " << name[u] << std::endl;
+ put(mod_time_map, u, stat_buf.st_mtime);
+ }
+
+ for (p = vertices(g); p.first != p.second; ++p.first)
+ {
+ std::cout << name[*p.first] << " was last modified at "
+ << ctime(&mod_time_map[*p.first]);
+ }
+ assert(num_vertices(g) == 15);
+ assert(num_edges(g) == 19);
+ return 0;
+}