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.BinPacking {
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30 | public class BPPORLIBInstanceProvider : ProblemInstanceProvider<BPPData> {
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31 |
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32 | public override string Name {
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33 | get { return "ORLIB BPP"; }
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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 "Bin packing problems from the Operations Research Library."; }
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38 | }
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39 |
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40 | public override Uri WebLink {
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41 | get { return new Uri("http://people.brunel.ac.uk/~mastjjb/jeb/orlib/binpacktwoinfo.html , http://www.diku.dk/~pisinger/new3dbpp/readme.3dbpp"); }
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42 | }
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43 |
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44 | public override string ReferencePublication {
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45 | get { return String.Empty; }
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46 | }
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47 |
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48 | public override IEnumerable<IDataDescriptor> GetDataDescriptors() {
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49 | var instanceArchiveName = GetResourceName("BPPORLIB.zip");
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50 | if (String.IsNullOrEmpty(instanceArchiveName)) yield break;
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51 |
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52 | using (var instanceStream = new ZipInputStream(GetType().Assembly.GetManifestResourceStream(instanceArchiveName))) {
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53 | foreach (var entry in GetZipContents(instanceStream).OrderBy(x => x)) {
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54 | yield return new BPPORLIBDataDescriptor(Path.GetFileNameWithoutExtension(entry), GetDescription(), entry, null);
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55 | }
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56 | }
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57 | }
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58 |
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59 | public override BPPData LoadData(IDataDescriptor id) {
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60 | var descriptor = (BPPORLIBDataDescriptor)id;
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61 | var instanceArchiveName = GetResourceName("JSSPORLIB.zip");
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62 | using (var instancesZipFile = new ZipFile(GetType().Assembly.GetManifestResourceStream(instanceArchiveName))) {
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63 | var entry = instancesZipFile.GetEntry(descriptor.InstanceIdentifier);
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64 |
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65 | using (var stream = instancesZipFile.GetInputStream(entry)) {
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66 | var parser = new BPPORLIBParser();
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67 | parser.Parse(stream);
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68 | var instance = Load(parser);
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69 | instance.Name = id.Name;
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70 | instance.Description = id.Description;
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71 |
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72 | return instance;
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73 | }
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74 | }
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75 | }
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76 |
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77 | public override bool CanImportData {
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78 | get { return true; }
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79 | }
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80 | public override BPPData ImportData(string path) {
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81 | var parser = new BPPORLIBParser();
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82 | parser.Parse(path);
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83 | var instance = Load(parser);
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84 | instance.Name = Path.GetFileName(path);
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85 | instance.Description = "Loaded from file \"" + path + "\" on " + DateTime.Now.ToString();
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86 | return instance;
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87 | }
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88 |
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89 | private BPPData Load(BPPORLIBParser parser) {
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90 | var instance = new BPPData {
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91 | Items = parser.Items,
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92 | BinMeasures = parser.BinMeasures,
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93 | ItemMeasures = parser.ItemMeasures
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94 | };
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95 | return instance;
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96 | }
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97 |
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98 | public override bool CanExportData {
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99 | get { return true; }
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100 | }
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101 |
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102 | public override void ExportData(BPPData instance, string path) {
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103 | var parser = new BPPORLIBParser {
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104 | Name = instance.Name,
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105 | Description = instance.Description,
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106 | Items = instance.Items,
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107 | BinMeasures = instance.BinMeasures,
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108 | ItemMeasures = instance.ItemMeasures
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109 | };
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110 | parser.Export(path);
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111 | }
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112 |
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113 | private string GetDescription() {
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114 | return "Embedded instance of plugin version " + Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyFileVersionAttribute), true).Cast<AssemblyFileVersionAttribute>().First().Version + ".";
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115 | }
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116 |
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117 | protected virtual string GetResourceName(string fileName) {
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118 | return Assembly.GetExecutingAssembly().GetManifestResourceNames()
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119 | .SingleOrDefault(x => Regex.Match(x, @".*\.Data\." + fileName).Success);
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120 | }
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121 |
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122 | protected IEnumerable<string> GetZipContents(ZipInputStream zipFile) {
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123 | ZipEntry entry;
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124 | while ((entry = zipFile.GetNextEntry()) != null) {
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125 | yield return entry.Name;
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126 | }
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127 | }
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128 | }
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129 | }
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