class/corlib/System.Text/EncodingInfo.cs

   1 //
   2 // System.Text.EncodingInfo.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7
   8 //
   9 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31
  32 namespace System.Text
  33 {
  34         [Serializable]
  35         public sealed class EncodingInfo
  36         {
  37                 readonly int codepage;
  38                 Encoding encoding;
  39
  40                 internal EncodingInfo (int cp)
  41                 {
  42                         codepage = cp;
  43                 }
  44
  45                 public int CodePage {
  46                         get { return codepage; }
  47                 }
  48
  49                 [MonoTODO]
  50                 public string DisplayName {
  51                         get { return Name; }
  52                 }
  53
  54                 public string Name {
  55                         get {
  56                                 if (encoding == null)
  57                                         encoding = GetEncoding ();
  58                                 return encoding.WebName;
  59                         }
  60                 }
  61
  62                 public override bool Equals (object value)
  63                 {
  64                         EncodingInfo ei = value as EncodingInfo;
  65                         return ei != null &&
  66                                 ei.codepage == codepage;
  67                 }
  68
  69                 public override int GetHashCode ()
  70                 {
  71                         return codepage;
  72                 }
  73
  74                 public Encoding GetEncoding ()
  75                 {
  76                         return Encoding.GetEncoding (codepage);
  77                 }
  78         }
  79 }