ExecutionEnvironment.cs :  » Build-Systems » CruiseControl.NET » ThoughtWorks » CruiseControl » Core » Util » C# / CSharp Open Source

using System;
using System.IO;
using System.Runtime.InteropServices;

namespace ThoughtWorks.CruiseControl.Core.Util{
  public sealed class ExecutionEnvironment : IExecutionEnvironment
  {
    private static bool? isRunningOnWindows;

    public char DirectorySeparator
    {
      get { return Path.DirectorySeparatorChar; }
    }

    /// <summary>
    /// Returns true if CruiseControl is running on a windows platform
    /// </summary>
    /// <remarks>
    /// If this method returns false, expect any DllImport not to work!
    /// </remarks>
    public bool IsRunningOnWindows
    {
      get
      {
        if (isRunningOnWindows.HasValue)
          return isRunningOnWindows.Value;

        // mono returns 4, 128 when running on linux, .NET 2.0 returns 4
        // and 6 for MacOSX
        // see http://www.mono-project.com/FAQ:_Technical
        int platform = (int) Environment.OSVersion.Platform;
        isRunningOnWindows = ((platform != 4) // PlatformID.Unix
          && (platform != 6) // PlatformID.MacOSX
          && (platform != 128)); // Mono compability value for PlatformID.Unix on .NET 1.x profile

        return isRunningOnWindows.Value;
      }
    }

    /// <summary>
    /// Gets the directory where the common language runtime is installed. 
    /// </summary>
    public string RuntimeDirectory
    {
      get
      {
        return RuntimeEnvironment.GetRuntimeDirectory();
      }
    }

    /// <summary>
    /// Get the directory for the default location of the CruiseControl.NET data files.
    /// </summary>
    /// <param name="application">Type of the application. E.g. Server or WebDashboard.</param>
    /// <returns>The location of the CruiseControl.NET data files.</returns>
    public string GetDefaultProgramDataFolder(ApplicationType application)
    {
            if (application == ApplicationType.Unknown)
            {
                throw new ArgumentOutOfRangeException("application");
            }

            var pgfPath = AppDomain.CurrentDomain.BaseDirectory;
            return pgfPath;
    }

    /// <summary>
    /// Enstures the path is rooted.
    /// </summary>
    /// <param name="path"></param>
    /// <returns></returns>
    public string EnsurePathIsRooted(string path)
    {
      if (!Path.IsPathRooted(path))
      {
        path = Path.Combine(
          GetDefaultProgramDataFolder(ApplicationType.Server),
          path);
      }
      return path;
    }
  }

  public interface IExecutionEnvironment
  {
    char DirectorySeparator { get; }
    bool IsRunningOnWindows { get; }
    string RuntimeDirectory { get; }
    string GetDefaultProgramDataFolder(ApplicationType application);
    string EnsurePathIsRooted(string path);
  }

  public enum ApplicationType
  {
    Unknown = 0,
    Server = 1,
    WebDashboard = 2
  }
}