#region License Information /* HeuristicLab * Copyright (C) 2002-2016 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.Linq; namespace HeuristicLab.Problems.Instances.VehicleRouting { public abstract class SolomonFormatInstanceProvider : VRPInstanceProvider { protected override CVRPTWData LoadData(Stream stream) { return LoadInstance(new SolomonParser(stream)); } public override bool CanImportData { get { return true; } } public override CVRPTWData ImportData(string path) { return LoadInstance(new SolomonParser(path)); } private CVRPTWData LoadInstance(SolomonParser parser) { parser.Parse(); var instance = new CVRPTWData(); instance.Dimension = parser.Cities + 1; instance.Coordinates = parser.Coordinates; instance.Capacity = parser.Capacity; instance.Demands = parser.Demands; instance.DistanceMeasure = DistanceMeasure.Euclidean; instance.ReadyTimes = parser.Readytimes; instance.ServiceTimes = parser.Servicetimes; instance.DueTimes = parser.Duetimes; instance.MaximumVehicles = parser.Vehicles; instance.Name = parser.ProblemName; return instance; } protected override void LoadSolution(Stream stream, CVRPTWData instance) { using (var reader = new StreamReader(stream)) { string instanceName = ExtractValue(reader.ReadLine()); string authors = ExtractValue(reader.ReadLine()); string date = ExtractValue(reader.ReadLine()); string reference = ExtractValue(reader.ReadLine()); reader.ReadLine(); // Solution var routesQuery = from line in reader.ReadAllLines() where !string.IsNullOrEmpty(line) let tokens = ExtractValue(line).Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries) let stops = tokens.Select(int.Parse).Select(s => s - 1) select stops; var routes = routesQuery.Select(s => s.ToArray()).ToArray(); instance.BestKnownTour = routes; } } private static string ExtractValue(string line) { return line.Split(new[] { ':' }, StringSplitOptions.RemoveEmptyEntries).Last().Trim(); } } }