mcs/class/corlib/System.IO/StringWriter.cs

   1 //\r
   2 // System.IO.StringWriter\r
   3 //\r
   4 // Authors
   5 //      Marcin Szczepanski (marcins@zipworld.com.au)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // Copyright (C) 2004 Novell (http://www.novell.com)\r
   9 //\r
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System.Globalization;\r
  35 using System.Text;\r
  36 \r
  37 namespace System.IO {\r
  38
  39         [Serializable]\r
  40         [MonoTODO ("Fix serialization compatibility with MS.NET")]\r
  41         public class StringWriter : TextWriter {\r
  42                 \r
  43                 private StringBuilder internalString;\r
  44                 private bool disposed = false;\r
  45 \r
  46                 public StringWriter () : this (new StringBuilder ())
  47                 {
  48                 }\r
  49 \r
  50                 public StringWriter (IFormatProvider formatProvider) :
  51                         this (new StringBuilder (), formatProvider)
  52                 {
  53                 }\r
  54 \r
  55                 public StringWriter (StringBuilder sb) :
  56                         this (sb, null)
  57                 {\r
  58                 }\r
  59 \r
  60                 public StringWriter (StringBuilder sb, IFormatProvider formatProvider)
  61                 {\r
  62                         if (sb == null)\r
  63                                 throw new ArgumentNullException ("sb");\r
  64 \r
  65                         internalString = sb;\r
  66                         internalFormatProvider = formatProvider;\r
  67                 }\r
  68 \r
  69                 public override System.Text.Encoding Encoding {\r
  70                         get {\r
  71                                 return System.Text.Encoding.Unicode;\r
  72                         }\r
  73                 }\r
  74 \r
  75                 public override void Close ()
  76                 {\r
  77                         Dispose (true);\r
  78                         disposed = true;\r
  79                 }\r
  80 \r
  81                 protected override void Dispose (bool disposing)\r
  82                 {\r
  83                         // MS.NET doesn't clear internal buffer.\r
  84                         // internalString = null;\r
  85                         base.Dispose (disposing);\r
  86                         disposed = true;\r
  87                 }\r
  88 \r
  89                 public virtual StringBuilder GetStringBuilder ()
  90                 {\r
  91                         return internalString;\r
  92                 }\r
  93 \r
  94                 public override string ToString ()
  95                 {\r
  96                         return internalString.ToString ();\r
  97                 }\r
  98 \r
  99                 public override void Write (char value)
 100                 {\r
 101                         if (disposed) {\r
 102                                 throw new ObjectDisposedException ("StringReader",
 103                                         Locale.GetText ("Cannot write to a closed StringWriter"));
 104                         }\r
 105 \r
 106                         internalString.Append (value);\r
 107                 }\r
 108 \r
 109                 public override void Write (string value)
 110                 {\r
 111                         if (disposed) {\r
 112                                 throw new ObjectDisposedException ("StringReader",
 113                                         Locale.GetText ("Cannot write to a closed StringWriter"));
 114                         }\r
 115
 116                         internalString.Append (value);\r
 117                 }\r
 118 \r
 119                 public override void Write (char[] buffer, int index, int count)
 120                 {\r
 121                         if (disposed) {\r
 122                                 throw new ObjectDisposedException ("StringReader",
 123                                         Locale.GetText ("Cannot write to a closed StringWriter"));
 124                         }\r
 125                         if (buffer == null)\r
 126                                 throw new ArgumentNullException ("buffer");
 127                         if (index < 0)\r
 128                                 throw new ArgumentOutOfRangeException ("index", "< 0");
 129                         if (count < 0)\r
 130                                 throw new ArgumentOutOfRangeException ("count", "< 0");
 131                         // re-ordered to avoid possible integer overflow
 132                         if (index > buffer.Length - count)\r
 133                                 throw new ArgumentException ("index + count > buffer.Length");\r
 134
 135                         internalString.Append (buffer, index, count);\r
 136                 }\r
 137         }\r
 138 }\r
 139               \r