#region License Information /* HeuristicLab * Copyright (C) 2002-2015 Heuristic and Evolutionary Algorithms Laboratory (HEAL) * * This file is part of HeuristicLab. * * HeuristicLab is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * HeuristicLab is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with HeuristicLab. If not, see . */ #endregion using System; using System.Collections.Generic; using System.IO; using System.IO.Compression; using System.Linq; using System.Reflection; using System.Text.RegularExpressions; namespace HeuristicLab.Problems.Instances.CordeauGQAP { public class CordeauGQAPInstanceProvider : ProblemInstanceProvider { public override string Name { get { return "Cordeau et al. GQAP instances"; } } public override string Description { get { return "GQAP instances published by Cordeau, Gaudioso, Laporte, and Moccia."; } } public override Uri WebLink { get { return null; } } public override string ReferencePublication { get { return @"Cordeau, J.-F., Gaudioso, M., Laporte, G., Moccia, L. 2006. A memetic heuristic for the generalized quadratic assignment problem. INFORMS Journal on Computing, 18, pp. 433–443."; } } private const string FileName = "CordeauGQAP"; public override IEnumerable GetDataDescriptors() { var instanceArchiveName = GetResourceName(FileName + @"\.zip"); if (String.IsNullOrEmpty(instanceArchiveName)) yield break; using (var instanceStream = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) { foreach (var entry in instanceStream.Entries.Select(x => x.Name).OrderBy(x => x)) { yield return new CordeauGQAPDataDescriptor(Path.GetFileNameWithoutExtension(entry), GetDescription(), entry); } } } public override GQAPData LoadData(IDataDescriptor id) { var descriptor = (CordeauGQAPDataDescriptor)id; var instanceArchiveName = GetResourceName(FileName + @"\.zip"); using (var instancesZipFile = new ZipArchive(GetType().Assembly.GetManifestResourceStream(instanceArchiveName), ZipArchiveMode.Read)) { var entry = instancesZipFile.GetEntry(descriptor.InstanceIdentifier); using (var stream = entry.Open()) { var parser = new CordeauGQAPParser(); parser.Parse(stream); var instance = Load(parser); instance.Name = id.Name; instance.Description = id.Description; return instance; } } } public override bool CanImportData { get { return true; } } public override GQAPData ImportData(string path) { var parser = new CordeauGQAPParser(); parser.Parse(path); var instance = Load(parser); instance.Name = Path.GetFileName(path); instance.Description = "Loaded from file \"" + path + "\" on " + DateTime.Now.ToString(); return instance; } private GQAPData Load(CordeauGQAPParser parser) { var instance = new GQAPData(); instance.BestKnownQuality = parser.BestKnownQuality; instance.Equipments = parser.Equipments; instance.Locations = parser.Locations; instance.Demands = parser.Demands; instance.Capacities = parser.Capacities; instance.Weights = parser.Weights; instance.Distances = parser.Distances; instance.InstallationCosts = parser.InstallationCosts; instance.TransportationCosts = parser.TransportationCosts; return instance; } private string GetDescription() { return "Embedded instance of plugin version " + Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyFileVersionAttribute), true).Cast().First().Version + "."; } protected virtual string GetResourceName(string fileName) { return Assembly.GetExecutingAssembly().GetManifestResourceNames() .Where(x => Regex.Match(x, @".*\.Data\." + fileName).Success).SingleOrDefault(); } } }