[5598] | 1 | using System;
|
---|
| 2 | using System.IO;
|
---|
| 3 |
|
---|
| 4 | namespace HeuristicLab.Problems.QuadraticAssignment {
|
---|
| 5 | public class QAPLIBSolutionParser {
|
---|
| 6 | public int Size { get; private set; }
|
---|
| 7 | public int[] Assignment { get; private set; }
|
---|
| 8 | public double Qualiy { get; private set; }
|
---|
| 9 | public Exception Error { get; private set; }
|
---|
| 10 |
|
---|
| 11 | public QAPLIBSolutionParser() {
|
---|
| 12 | Reset();
|
---|
| 13 | }
|
---|
| 14 |
|
---|
| 15 | public void Reset() {
|
---|
| 16 | Size = 0;
|
---|
| 17 | Assignment = null;
|
---|
| 18 | Qualiy = double.NaN;
|
---|
| 19 | Error = null;
|
---|
| 20 | }
|
---|
| 21 |
|
---|
| 22 | public bool Parse(string file) {
|
---|
| 23 | using (Stream stream = new FileStream(file, FileMode.Open, FileAccess.Read)) {
|
---|
| 24 | return Parse(stream);
|
---|
| 25 | }
|
---|
| 26 | }
|
---|
| 27 |
|
---|
| 28 | /// <summary>
|
---|
| 29 | /// Reads from the given stream data which is expected to be in the QAPLIB format.
|
---|
| 30 | /// </summary>
|
---|
| 31 | /// <remarks>
|
---|
| 32 | /// The stream is not closed or disposed. The caller has to take care of that.
|
---|
| 33 | /// </remarks>
|
---|
| 34 | /// <param name="stream">The stream to read data from.</param>
|
---|
| 35 | /// <returns>True if the file was successfully read or false otherwise.</returns>
|
---|
| 36 | public bool Parse(Stream stream) {
|
---|
| 37 | Error = null;
|
---|
| 38 | try {
|
---|
| 39 | StreamReader reader = new StreamReader(stream);
|
---|
[5648] | 40 | char[] delim = new char[] { ' ', ',' }; // comma is added for nug30.sln which is the only file that separates the permutation with commas
|
---|
[5598] | 41 | string[] firstline = reader.ReadLine().Split(delim, StringSplitOptions.RemoveEmptyEntries);
|
---|
| 42 | Size = int.Parse(firstline[0]);
|
---|
| 43 | Qualiy = double.Parse(firstline[1]);
|
---|
| 44 | Assignment = new int[Size];
|
---|
| 45 | int read = 0;
|
---|
| 46 | while (!reader.EndOfStream) {
|
---|
| 47 | string valLine = reader.ReadLine();
|
---|
| 48 | string[] vals = valLine.Split(delim, StringSplitOptions.RemoveEmptyEntries);
|
---|
| 49 | for (int j = 0; j < vals.Length; j++) {
|
---|
| 50 | Assignment[read++] = int.Parse(vals[j]);
|
---|
| 51 | }
|
---|
| 52 | }
|
---|
| 53 | return true;
|
---|
| 54 | } catch (Exception e) {
|
---|
| 55 | Error = e;
|
---|
| 56 | return false;
|
---|
| 57 | }
|
---|
| 58 | }
|
---|
| 59 | }
|
---|
| 60 | }
|
---|