[7465] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2012 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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| 23 | using System.Collections.Generic;
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| 24 | using System.IO;
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| 25 | using System.Linq;
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| 26 | using System.Reflection;
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| 27 | using System.Text.RegularExpressions;
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| 28 |
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| 29 | namespace HeuristicLab.Problems.Instances.TSPLIB {
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| 30 | public class TSPLIBTSPInstanceProvider : ProblemInstanceProvider<ITSPInstance> {
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| 31 |
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| 32 | public override string Name {
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| 33 | get { return "TSPLIB (symmetric TSP)"; }
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| 34 | }
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| 35 |
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| 36 | public override string Description {
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| 37 | get { return "Traveling Salesman Problem Library"; }
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| 38 | }
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| 39 |
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| 40 | public override Uri Link {
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| 41 | get { return new Uri("http://comopt.ifi.uni-heidelberg.de/software/TSPLIB95/"); }
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| 42 | }
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| 43 |
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| 44 | public override IEnumerable<IInstanceDescriptor> GetInstanceDescriptors() {
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| 45 | var solutions = Assembly.GetExecutingAssembly()
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| 46 | .GetManifestResourceNames()
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| 47 | .Where(x => x.EndsWith(".opt.tour"))
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| 48 | .ToDictionary(x => x.Substring(0, x.Length - ".opt.tour".Length) + ".tsp", x => x);
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| 49 |
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| 50 | return Assembly.GetExecutingAssembly()
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| 51 | .GetManifestResourceNames()
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| 52 | .Where(x => x.EndsWith(".tsp"))
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| 53 | .OrderBy(x => x)
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| 54 | .Select(x => new TSPLIBInstanceDescriptor(GetPrettyName(x), GetDescription(), x, solutions.ContainsKey(x) ? solutions[x] : String.Empty));
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| 55 | }
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| 56 |
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| 57 | public override ITSPInstance GetInstance(IInstanceDescriptor id) {
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| 58 | var descriptor = (TSPLIBInstanceDescriptor)id;
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| 59 | var instance = new TSPLIBInstance();
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| 60 | using (var stream = Assembly.GetExecutingAssembly()
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| 61 | .GetManifestResourceStream(descriptor.InstanceIdentifier)) {
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| 62 | var tspParser = new TSPLIBParser(stream);
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| 63 | tspParser.Parse();
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| 64 | instance.Coordinates = tspParser.Vertices != null ? tspParser.Vertices : tspParser.DisplayVertices;
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| 65 | instance.Distances = tspParser.Distances;
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| 66 |
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| 67 | instance.Name = tspParser.Name;
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| 68 | instance.Description = tspParser.Comment
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| 69 | + Environment.NewLine + Environment.NewLine
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| 70 | + GetDescription();
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| 71 |
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| 72 | if (!String.IsNullOrEmpty(descriptor.SolutionIdentifier)) {
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| 73 | using (Stream solStream = Assembly.GetExecutingAssembly()
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| 74 | .GetManifestResourceStream(descriptor.SolutionIdentifier)) {
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| 75 | var slnParser = new TSPLIBParser(solStream);
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| 76 | slnParser.Parse();
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| 77 | instance.BestKnownTour = slnParser.Tour[0];
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| 78 | }
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| 79 | }
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| 80 | }
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| 81 | return instance;
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| 82 | }
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| 83 |
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| 84 | private string GetPrettyName(string instanceIdentifier) {
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| 85 | return Regex.Match(instanceIdentifier, GetType().Namespace + @"\.Data\.TSP\.(.*)\.tsp").Groups[1].Captures[0].Value;
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| 86 | }
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| 87 |
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| 88 | private string GetDescription() {
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| 89 | return "Embedded instance of plugin version " + Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyFileVersionAttribute), true).Cast<AssemblyFileVersionAttribute>().First().Version + ".";
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| 90 | }
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| 91 | }
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| 92 | }
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