source: branches/PushGP/HeuristicLab.PushGP/HeuristicLab.Tests/Benchmark/Problem/Problem.cs @ 14727

namespace HeuristicLab.Tests.Benchmark.Problem {
  using System;
  using System.Collections.Generic;
  using System.IO;
  using System.IO.Compression;
  using System.Linq;
  using System.Reflection;
  using System.Text.RegularExpressions;
  using HeuristicLab.BenchmarkSuite.ProblemData;

  public class Problem<Tin, Tout> {
    public const char ExampleSeparator = ',';

    public const string ArchiveFileName = "BenchmarkExamples.zip";

    private static readonly string instanceArchiveName = GetResourceName(ArchiveFileName);

    protected List<Example<Tin, Tout>> Examples { get; set; }

    protected List<Example<Tin, Tout>> GetExamples(
      string problemName,
      Converter<string, Tin> inputConverter,
      Converter<string, Tout> outputConverter) {
      using (var file = this.GetType().Assembly.GetManifestResourceStream(instanceArchiveName)) {
        using (var archive = new ZipArchive(file, ZipArchiveMode.Read)) {
          var entry = archive.Entries.SingleOrDefault(x => x.Name == problemName);

          using (var reader = new StreamReader(entry.Open())) {
            var examples = new List<Example<Tin, Tout>>();

            // skip training headline
            if (reader.Peek() >= 0) reader.ReadLine();

            while (reader.Peek() >= 0) {
              var line = reader.ReadLine();

              // return
              if (line.StartsWith("test")) break;

              var values = line.Split(ExampleSeparator);

              examples.Add(
                new Example<Tin, Tout> { Input = inputConverter(values[0]), Output = outputConverter(values[1]) });
            }

            return examples;
          }
        }
      }
    }

    private static string GetResourceName(string fileName) {
      return Assembly
          .GetExecutingAssembly()
          .GetManifestResourceNames()
          .SingleOrDefault(x => Regex.Match(x, @".*\.Data\." + fileName).Success);
    }
  }
}