#region License Information
/* HeuristicLab
* Copyright (C) 2002-2019 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.Globalization;
using System.IO;
using System.Linq;
using System.Text;
namespace HeuristicLab.Problems.Instances.Scheduling {
public class JSSPORLIBParser {
public string Name { get; set; }
public string Description { get; set; }
public int Jobs { get; set; }
public int Resources { get; set; }
public double[,] ProcessingTimes { get; set; }
public int[,] Demands { get; set; }
public double[] DueDates { get; set; }
public JSSPORLIBParser() {
Reset();
}
public void Reset() {
Name = Description = String.Empty;
Jobs = Resources = 0;
ProcessingTimes = null;
Demands = null;
}
public void Parse(string file) {
using (Stream stream = new FileStream(file, FileMode.Open, FileAccess.Read)) {
Parse(stream);
}
}
public void Export(string file) {
using (Stream stream = new FileStream(file, FileMode.Create, FileAccess.Write)) {
Export(stream);
}
}
///
/// Reads from the given stream data which is expected to be in the JSSP ORLIB format.
///
///
/// The stream is not closed or disposed. The caller has to take care of that.
///
/// The stream to read data from.
public void Parse(Stream stream) {
using (var reader = new StreamReader(stream, Encoding.UTF8, true, 4092, true)) {
Name = reader.ReadLine().Trim();
Description = reader.ReadLine().Trim();
var delim = new char[] {' ', '\t'};
var info = reader.ReadLine().Split(delim, StringSplitOptions.RemoveEmptyEntries);
Jobs = int.Parse(info[0]);
Resources = int.Parse(info[1]);
ProcessingTimes = new double[Jobs, Resources];
Demands = new int[Jobs, Resources];
for (int k = 0; k < Jobs; k++) {
if (reader.EndOfStream) throw new InvalidDataException("Unexpected End of Stream.");
var valLine = reader.ReadLine();
while (String.IsNullOrWhiteSpace(valLine)) valLine = reader.ReadLine();
var vals = valLine.Split(delim, StringSplitOptions.RemoveEmptyEntries);
if (vals.Length > 2 * Resources) {
if (DueDates == null) DueDates = new double[Jobs];
DueDates[k] = double.Parse(vals.Last(), CultureInfo.InvariantCulture.NumberFormat);
}
for (int i = 0; i < Resources; i++) {
Demands[k, i] = int.Parse(vals[2 * i]);
ProcessingTimes[k, i] = double.Parse(vals[2 * i + 1], CultureInfo.InvariantCulture.NumberFormat);
}
}
}
}
///
/// Writes to the given stream data which is expected to be in the JSSP ORLIB format.
///
///
/// The stream is not closed or disposed. The caller has to take care of that.
///
/// The stream to write data to.
public void Export(Stream stream) {
using (var writer = new StreamWriter(stream, Encoding.UTF8, 4092, true)) {
writer.WriteLine(Name);
writer.WriteLine(Description);
writer.WriteLine(Jobs.ToString(CultureInfo.InvariantCulture.NumberFormat) + " " + Resources.ToString(CultureInfo.InvariantCulture.NumberFormat));
for (int i = 0; i < Jobs; i++) {
for (int j = 0; j < Resources; j++) {
writer.Write(Demands[i, j] + " " + ProcessingTimes[i, j] + " ");
}
if (DueDates != null) writer.Write(DueDates[i].ToString("r", CultureInfo.InvariantCulture.NumberFormat));
writer.WriteLine();
}
writer.Flush();
}
}
}
}