| 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2018 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.IO;
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| 24 | using HeuristicLab.Problems.Instances.TSPLIB;
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| 25 |
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| 26 | namespace HeuristicLab.Problems.Instances.VehicleRouting {
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| 27 | public abstract class TSPLibFormatInstanceProvider : VRPInstanceProvider<CVRPData> {
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| 28 | protected override CVRPData LoadData(Stream stream) {
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| 29 | return LoadInstance(new TSPLIBParser(stream));
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| 30 | }
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| 31 |
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| 32 | public override bool CanImportData {
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| 33 | get { return true; }
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| 34 | }
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| 35 | public override CVRPData ImportData(string path) {
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| 36 | return LoadInstance(new TSPLIBParser(path));
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| 37 | }
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| 38 |
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| 39 | private CVRPData LoadInstance(TSPLIBParser parser) {
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| 40 | parser.Parse();
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| 41 |
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| 42 | var instance = new CVRPData();
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| 43 | instance.Dimension = parser.Dimension;
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| 44 | instance.Coordinates = parser.Vertices != null ? parser.Vertices : parser.DisplayVertices;
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| 45 | instance.Distances = parser.Distances;
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| 46 | instance.Capacity = parser.Capacity.Value;
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| 47 | instance.Demands = parser.Demands;
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| 48 | switch (parser.EdgeWeightType) {
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| 49 | case TSPLIBEdgeWeightTypes.ATT:
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| 50 | instance.DistanceMeasure = DistanceMeasure.Att; break;
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| 51 | case TSPLIBEdgeWeightTypes.CEIL_2D:
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| 52 | instance.DistanceMeasure = DistanceMeasure.UpperEuclidean; break;
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| 53 | case TSPLIBEdgeWeightTypes.EUC_2D:
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| 54 | case TSPLIBEdgeWeightTypes.EUC_3D:
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| 55 | instance.DistanceMeasure = DistanceMeasure.RoundedEuclidean; break;
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| 56 | case TSPLIBEdgeWeightTypes.EXPLICIT:
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| 57 | instance.DistanceMeasure = DistanceMeasure.Direct; break;
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| 58 | case TSPLIBEdgeWeightTypes.GEO:
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| 59 | instance.DistanceMeasure = DistanceMeasure.Geo; break;
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| 60 | case TSPLIBEdgeWeightTypes.MAN_2D:
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| 61 | case TSPLIBEdgeWeightTypes.MAN_3D:
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| 62 | instance.DistanceMeasure = DistanceMeasure.Manhattan; break;
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| 63 | case TSPLIBEdgeWeightTypes.MAX_2D:
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| 64 | case TSPLIBEdgeWeightTypes.MAX_3D:
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| 65 | instance.DistanceMeasure = DistanceMeasure.Maximum; break;
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| 66 | default:
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| 67 | throw new InvalidDataException("The given edge weight is not supported by HeuristicLab.");
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| 68 | }
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| 69 |
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| 70 | instance.Name = parser.Name;
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| 71 | instance.Description = parser.Comment
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| 72 | + Environment.NewLine + Environment.NewLine
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| 73 | + GetInstanceDescription();
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| 74 |
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| 75 | return instance;
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| 76 | }
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| 77 | }
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| 78 | }
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