mcs/class/corlib/System/OperatingSystem.cs

   1 //------------------------------------------------------------------------------\r
   2 // \r
   3 // System.OperatingSystem.cs \r
   4 //\r
   5 // Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved\r
   6 // \r
   7 // Author:         Jim Richardson, develop@wtfo-guru.com\r
   8 // Created:        Saturday, August 11, 2001 \r
   9 //\r
  10 //------------------------------------------------------------------------------\r
  11 \r
  12 using System;\r
  13 \r
  14 namespace System\r
  15 {\r
  16         /// <summary>\r
  17         /// Class representing a specific operating system version for a specific platform\r
  18         /// </summary>\r
  19         public sealed class OperatingSystem : ICloneable\r
  20         {\r
  21                 private System.PlatformID itsPlatform;\r
  22                 private Version itsVersion;\r
  23 \r
  24                 public OperatingSystem(PlatformID platform, Version version)\r
  25                 {\r
  26                         if(version == null)\r
  27                         {\r
  28                                 throw new ArgumentNullException();\r
  29                         }\r
  30                         \r
  31                         itsPlatform = platform;\r
  32                         itsVersion = version;\r
  33                 }\r
  34 \r
  35                 /// <summary>\r
  36                 /// Get the PlatformID\r
  37                 /// </summary>\r
  38                 public PlatformID Platform\r
  39                 {\r
  40                         get\r
  41                         {\r
  42                                 return itsPlatform;\r
  43                         }\r
  44                 }\r
  45 \r
  46                 /// <summary>\r
  47                 /// Gets the version object\r
  48                 /// </summary>\r
  49                 public Version Version\r
  50                 {\r
  51                         get\r
  52                         {\r
  53                                 return itsVersion;\r
  54                         }\r
  55                 }\r
  56 \r
  57                 /// <summary>\r
  58                 /// Return a clone of this object\r
  59                 /// </summary>\r
  60                 public object Clone()\r
  61                 {\r
  62                         return new OperatingSystem(itsPlatform, itsVersion);\r
  63                 }\r
  64 \r
  65                 /// <summary>\r
  66                 /// Return true if obj equals this object\r
  67                 /// </summary>\r
  68                 public override bool Equals(object obj)\r
  69                 {\r
  70                         //Check for null and compare run-time types.\r
  71                         if (obj == null || GetType() != obj.GetType()) return false;\r
  72                         OperatingSystem os = (OperatingSystem)obj;\r
  73                         return (itsPlatform == os.itsPlatform) && \r
  74                                 (os.itsVersion.Equals(itsVersion));\r
  75                 }\r
  76 \r
  77                 /// <summary>\r
  78                 /// Return hash code\r
  79                 /// </summary>\r
  80                 public override int GetHashCode()\r
  81                 {       // this leave us enuf for 256 unique platforms which should suffice for a good while\r
  82                         return ((int)itsPlatform << 24) | itsVersion.GetHashCode() >> 8;\r
  83                 }\r
  84 \r
  85                 /// <summary>\r
  86                 /// Return a string reprentation of this instance\r
  87                 /// </summary>\r
  88                 public override string ToString()\r
  89                 {\r
  90                         string str;\r
  91                         \r
  92                         switch(itsPlatform)\r
  93                         {\r
  94                         case System.PlatformID.Win32NT: str = "Microsoft Windows NT"; break;\r
  95                         case System.PlatformID.Win32S: str = "Microsoft Win32S";  break;\r
  96                         case System.PlatformID.Win32Windows: str = "Microsoft Windows 98"; break;\r
  97                         case System.PlatformID.Linux: str = "Linux"; break;\r
  98                         default: str = "<unknown>";      break;\r
  99                         }\r
 100 \r
 101                         return str + " " + itsVersion.ToString();\r
 102                 }\r
 103         }\r
 104 }\r