mcs/class/corlib/Microsoft.Win32/Registry.cs

   1 //
   2 // Microsoft.Win32.Registry.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@novell.com)
   6 //   stubbed out by Alexandre Pigolkine (pigolkine@gmx.de)
   7 //
   8
   9 //
  10 // Copyright (C) 2004, 2005 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 #if !NET_2_1
  33
  34 using System;
  35
  36 #if NET_2_0
  37 using System.Runtime.InteropServices;
  38 #endif
  39
  40 namespace Microsoft.Win32
  41 {
  42 #if NET_2_0
  43         [ComVisible (true)]
  44 #endif
  45         public
  46 #if NET_2_0
  47         static
  48 #else
  49         sealed
  50 #endif
  51         class Registry
  52         {
  53 #if !NET_2_0
  54                 private Registry () { }
  55 #endif
  56                 public static readonly RegistryKey ClassesRoot = new RegistryKey (
  57                                 RegistryHive.ClassesRoot);
  58                 public static readonly RegistryKey CurrentConfig = new RegistryKey (
  59                                 RegistryHive.CurrentConfig);
  60                 public static readonly RegistryKey CurrentUser = new RegistryKey (
  61                                 RegistryHive.CurrentUser);
  62                 public static readonly RegistryKey DynData = new RegistryKey (
  63                                 RegistryHive.DynData);
  64                 public static readonly RegistryKey LocalMachine = new RegistryKey (
  65                                 RegistryHive.LocalMachine);
  66                 public static readonly RegistryKey PerformanceData = new RegistryKey (
  67                                 RegistryHive.PerformanceData);
  68                 public static readonly RegistryKey Users = new RegistryKey (
  69                                 RegistryHive.Users);
  70
  71 #if NET_2_0
  72                 static RegistryKey ToKey (string keyName, bool setting)
  73                 {
  74                         if (keyName == null)
  75                                 throw new ArgumentException ("Not a valid registry key name", "keyName");
  76
  77                         RegistryKey key = null;
  78                         string [] keys = keyName.Split ('\\');
  79
  80                         switch (keys [0]){
  81                         case "HKEY_CLASSES_ROOT":
  82                                 key = ClassesRoot;
  83                                 break;
  84                         case "HKEY_CURRENT_CONFIG":
  85                                 key = CurrentConfig;
  86                                 break;
  87                         case "HKEY_CURRENT_USER":
  88                                 key = CurrentUser;
  89                                 break;
  90                         case "HKEY_DYN_DATA":
  91                                 key = DynData;
  92                                 break;
  93                         case "HKEY_LOCAL_MACHINE":
  94                                 key = LocalMachine;
  95                                 break;
  96                         case "HKEY_PERFORMANCE_DATA":
  97                                 key = PerformanceData;
  98                                 break;
  99                         case "HKEY_USERS":
 100                                 key = Users;
 101                                 break;
 102                         default:
 103                                 throw new ArgumentException ("Keyname does not start with a valid registry root", "keyName");
 104                         }
 105
 106                         for (int i = 1; i < keys.Length; i++){
 107                                 RegistryKey nkey = key.OpenSubKey (keys [i], true);
 108                                 if (nkey == null){
 109                                         if (!setting)
 110                                                 return null;
 111                                         nkey = key.CreateSubKey (keys [i]);
 112                                 }
 113                                 key = nkey;
 114                         }
 115                         return key;
 116                 }
 117
 118                 public static void SetValue (string keyName, string valueName, object value)
 119                 {
 120                         RegistryKey key = ToKey (keyName, true);
 121                         if (valueName.Length > 255)
 122                                 throw new ArgumentException ("valueName is larger than 255 characters", "valueName");
 123
 124                         if (key == null)
 125                                 throw new ArgumentException ("cant locate that keyName", "keyName");
 126
 127                         key.SetValue (valueName, value);
 128                 }
 129
 130                 public static void SetValue (string keyName, string valueName, object value, RegistryValueKind valueKind)
 131                 {
 132                         RegistryKey key = ToKey (keyName, true);
 133                         if (valueName.Length > 255)
 134                                 throw new ArgumentException ("valueName is larger than 255 characters", "valueName");
 135
 136                         if (key == null)
 137                                 throw new ArgumentException ("cant locate that keyName", "keyName");
 138
 139                         key.SetValue (valueName, value, valueKind);
 140                 }
 141
 142                 public static object GetValue (string keyName, string valueName, object defaultValue)
 143                 {
 144                         RegistryKey key = ToKey (keyName, false);
 145                         if (key == null)
 146                                 return defaultValue;
 147
 148                         return key.GetValue (valueName, defaultValue);
 149                 }
 150 #endif
 151         }
 152 }
 153
 154 #endif // NET_2_1
 155