class/corlib/System.Text/DecoderReplacementFallback.cs

   1 //
   2 // DecoderReplacementFallback.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7
   8 //
   9 // Copyright (C) 2005 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 namespace System.Text
  32 {
  33         [Serializable]
  34         public sealed class DecoderReplacementFallback : DecoderFallback
  35         {
  36                 public DecoderReplacementFallback ()
  37                         : this ("?")
  38                 {
  39                 }
  40
  41                 [MonoTODO]
  42                 public DecoderReplacementFallback (string replacement)
  43                 {
  44                         if (replacement == null)
  45                                 throw new ArgumentNullException ();
  46                         // FIXME: check replacement validity (invalid surrogate)
  47
  48                         this.replacement = replacement;
  49                 }
  50
  51                 string replacement;
  52
  53                 public string DefaultString {
  54                         get { return replacement; }
  55                 }
  56
  57                 public override int MaxCharCount {
  58                         get { return replacement.Length; }
  59                 }
  60
  61                 public override DecoderFallbackBuffer CreateFallbackBuffer ()
  62                 {
  63                         return new DecoderReplacementFallbackBuffer (this);
  64                 }
  65
  66                 public override bool Equals (object value)
  67                 {
  68                         DecoderReplacementFallback f = value as DecoderReplacementFallback;
  69                         return f != null && replacement == f.replacement;
  70                 }
  71
  72                 public override int GetHashCode ()
  73                 {
  74                         return replacement.GetHashCode ();
  75                 }
  76         }
  77 }