source: branches/2864_PermutationProblems/HeuristicLab.Problems.Instances.PFSP/3.3/FSSPTAILIBParser.cs @ 15521

Last change on this file since 15521 was 15521, checked in by fholzing, 22 months ago

#2864: First commit of new branch of Permutation based benchmark problems.

File size: 5.3 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using System.Globalization;
24using System.IO;
25using System.Linq;
26using System.Text;
27
28namespace HeuristicLab.Problems.Instances.PFSP
29{
30    public class FSSPTAILIBParser
31    {
32        public string Name { get; set; }
33        public string Description { get; set; }
34        public int Jobs { get; set; }
35        public int Machines { get; set; }
36        public double[,] ProcessingTimes { get; set; }
37
38        public int[] BestKnownSchedule { get; set; }
39        public int BestKnownQuality { get; set; }
40
41        public FSSPTAILIBParser()
42        {
43            Reset();
44        }
45
46        public void Reset()
47        {
48            Name = Description = String.Empty;
49            Jobs = Machines = BestKnownQuality = 0;
50            ProcessingTimes = null;
51            BestKnownSchedule = null;
52        }
53
54        public void Parse(string file)
55        {
56            using (Stream stream = new FileStream(file, FileMode.Open, FileAccess.Read))
57            {
58                Parse(stream);
59            }
60        }
61
62        public void Export(string file)
63        {
64            using (Stream stream = new FileStream(file, FileMode.Create, FileAccess.Write))
65            {
66                Export(stream);
67            }
68        }
69
70        /// <summary>
71        /// Reads from the given stream data which is expected to be in the JSSP ORLIB format.
72        /// </summary>
73        /// <remarks>
74        /// The stream is not closed or disposed. The caller has to take care of that.
75        /// </remarks>
76        /// <param name="stream">The stream to read data from.</param>
77        public void Parse(Stream stream)
78        {
79            using (var reader = new StreamReader(stream, Encoding.UTF8, true, 4092, true))
80            {
81                Name = reader.ReadLine().Trim();
82                Description = reader.ReadLine().Trim();
83                var delim = new char[] { ' ', '\t' };
84
85                var info = reader.ReadLine().Split(delim, StringSplitOptions.RemoveEmptyEntries);
86                Jobs = int.Parse(info[0]);
87                Machines = int.Parse(info[1]);
88                var bestKnownQuality = reader.ReadLine().Trim();
89                BestKnownQuality = int.Parse(bestKnownQuality);
90                ProcessingTimes = new double[Machines, Jobs];
91
92                for (int k = 0; k < Machines; k++)
93                {
94                    if (reader.EndOfStream) throw new InvalidDataException("Unexpected End of Stream.");
95                    var valLine = reader.ReadLine();
96                    while (String.IsNullOrWhiteSpace(valLine)) valLine = reader.ReadLine();
97                    var vals = valLine.Split(delim, StringSplitOptions.RemoveEmptyEntries);
98
99
100                    for (int i = 0; i < Jobs; i++)
101                    {
102                        ProcessingTimes[k, i] = double.Parse(vals[i], CultureInfo.InvariantCulture.NumberFormat);
103                    }
104                }
105
106                while (!reader.EndOfStream)
107                {
108                    var vals = reader.ReadLine().Split(delim, StringSplitOptions.RemoveEmptyEntries);
109                    if (vals.Count() == Jobs) { BestKnownSchedule = vals.Select(val => Int32.Parse(val)).ToArray(); }
110                }
111            }
112        }
113
114        /// <summary>
115        /// Writes to the given stream data which is expected to be in the JSSP ORLIB format.
116        /// </summary>
117        /// <remarks>
118        /// The stream is not closed or disposed. The caller has to take care of that.
119        /// </remarks>
120        /// <param name="stream">The stream to write data to.</param>
121        public void Export(Stream stream)
122        {
123            //TODO: complete Export, seems as if it is just a dummy (copy-paste)-implementation
124            using (var writer = new StreamWriter(stream, Encoding.UTF8, 4092, true))
125            {
126                writer.WriteLine(Name);
127                writer.WriteLine(Description);
128                writer.WriteLine(Jobs.ToString(CultureInfo.InvariantCulture.NumberFormat) + " " + Machines.ToString(CultureInfo.InvariantCulture.NumberFormat));
129                for (int i = 0; i < Machines; i++)
130                {
131                    for (int j = 0; j < Jobs; j++)
132                    {
133                        writer.Write(ProcessingTimes[i, j] + " ");
134                    }
135                    writer.WriteLine();
136                }
137                writer.Flush();
138            }
139        }
140
141    }
142}
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