diff -r 000000000000 -r e4d67989cc36 stdcpp/tsrc/Boost_test/graph/src/dijkstra-example.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/stdcpp/tsrc/Boost_test/graph/src/dijkstra-example.cpp Tue Feb 02 02:01:42 2010 +0200 @@ -0,0 +1,116 @@ +//======================================================================= +// 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) +//======================================================================= + +/* + * © Portions copyright (c) 2006-2007 Nokia Corporation. All rights reserved. +*/ + + +#include +#include +#include + +#include +#include +#include + +#ifdef __SYMBIAN32__ +#include "std_log_result.h" +#define LOG_FILENAME_LINE __FILE__, __LINE__ +#endif + + + +using namespace boost; + +int +main(int, char *[]) +{ + typedef adjacency_list < listS, vecS, directedS, + no_property, property < edge_weight_t, int > > graph_t; + typedef graph_traits < graph_t >::vertex_descriptor vertex_descriptor; + typedef graph_traits < graph_t >::edge_descriptor edge_descriptor; + typedef std::pair Edge; + + const int num_nodes = 5; + enum nodes { A, B, C, D, E }; + char name[] = "ABCDE"; + Edge edge_array[] = { Edge(A, C), Edge(B, B), Edge(B, D), Edge(B, E), + Edge(C, B), Edge(C, D), Edge(D, E), Edge(E, A), Edge(E, B) + }; + int weights[] = { 1, 2, 1, 2, 7, 3, 1, 1, 1 }; + int num_arcs = sizeof(edge_array) / sizeof(Edge); +#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 + graph_t g(num_nodes); + property_map::type weightmap = get(edge_weight, g); + for (std::size_t j = 0; j < num_arcs; ++j) { + edge_descriptor e; bool inserted; + tie(e, inserted) = add_edge(edge_array[j].first, edge_array[j].second, g); + weightmap[e] = weights[j]; + } +#else + graph_t g(edge_array, edge_array + num_arcs, weights, num_nodes); + property_map::type weightmap = get(edge_weight, g); +#endif + std::vector p(num_vertices(g)); + std::vector d(num_vertices(g)); + vertex_descriptor s = vertex(A, g); + +#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300 + // VC++ has trouble with the named parameters mechanism + property_map::type indexmap = get(vertex_index, g); + dijkstra_shortest_paths(g, s, &p[0], &d[0], weightmap, indexmap, + std::less(), closed_plus(), + (std::numeric_limits::max)(), 0, + default_dijkstra_visitor()); +#else + dijkstra_shortest_paths(g, s, predecessor_map(&p[0]).distance_map(&d[0])); +#endif + + std::cout << "distances and parents:" << std::endl; + graph_traits < graph_t >::vertex_iterator vi, vend; + for (tie(vi, vend) = vertices(g); vi != vend; ++vi) { + std::cout << "distance(" << name[*vi] << ") = " << d[*vi] << ", "; + std::cout << "parent(" << name[*vi] << ") = " << name[p[*vi]] << std:: + endl; + } + std::cout << std::endl; + + std::ofstream dot_file("figs/dijkstra-eg.dot"); + + dot_file << "digraph D {\n" + << " rankdir=LR\n" + << " size=\"4,3\"\n" + << " ratio=\"fill\"\n" + << " edge[style=\"bold\"]\n" << " node[shape=\"circle\"]\n"; + + graph_traits < graph_t >::edge_iterator ei, ei_end; + for (tie(ei, ei_end) = edges(g); ei != ei_end; ++ei) { + graph_traits < graph_t >::edge_descriptor e = *ei; + graph_traits < graph_t >::vertex_descriptor + u = source(e, g), v = target(e, g); + dot_file << name[u] << " -> " << name[v] + << "[label=\"" << get(weightmap, e) << "\""; + if (p[v] == u) + dot_file << ", color=\"black\""; + else + dot_file << ", color=\"grey\""; + dot_file << "]"; + } + dot_file << "}"; + + #ifdef __SYMBIAN32__ + std_log(LOG_FILENAME_LINE,"[End Test Case ]"); + testResultXml("dijkstra-example"); + close_log_file(); + #endif + return EXIT_SUCCESS; +} + + +