mcs/class/Managed.Windows.Forms/System.Resources/ResXFileRef.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
  21 //
  22 // Authors:
  23 //      Peter Bartok    (pbartok@novell.com)
  24 //      Gert Driesen    (drieseng@users.sourceforge.net)
  25 //
  26
  27 using System;
  28 using System.ComponentModel;
  29 #if NET_2_0
  30 using System.Drawing;
  31 #endif
  32 using System.IO;
  33 using System.Reflection;
  34 using System.Text;
  35
  36 namespace System.Resources {
  37         [Serializable]
  38         [TypeConverter(typeof(ResXFileRef.Converter))]
  39         public class ResXFileRef {
  40                 public class Converter : TypeConverter {
  41                         public Converter() {
  42                         }
  43
  44                         public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
  45                                 return sourceType == typeof(string);
  46                         }
  47
  48                         public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
  49                                 return destinationType == typeof(string);
  50                         }
  51
  52                         public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) {
  53                                 byte[]          buffer;
  54
  55                                 if ( !(value is String)) {
  56                                         return null;
  57                                 }
  58
  59                                 string [] parts = ResXFileRef.Parse ((string) value);
  60 #if NET_2_0
  61                                 if (parts.Length == 1)
  62                                         throw new ArgumentException ("value");
  63 #endif
  64
  65                                 Type type = Type.GetType (parts [1]);
  66 #if NET_2_0
  67                                 if (type == typeof(string)) {
  68                                         Encoding encoding;
  69                                         if (parts.Length > 2) {
  70                                                 encoding = Encoding.GetEncoding (parts [2]);
  71                                         } else {
  72                                                 encoding = Encoding.Default;
  73                                         }
  74
  75                                         using (TextReader reader = new StreamReader(parts [0], encoding)) {
  76                                                 return reader.ReadToEnd();
  77                                         }
  78                                 }
  79 #endif
  80
  81                                 using (FileStream file = new FileStream (parts [0], FileMode.Open, FileAccess.Read, FileShare.Read)) {
  82                                         buffer = new byte [file.Length];
  83                                         file.Read(buffer, 0, (int) file.Length);
  84                                 }
  85
  86                                 if (type == typeof(System.Byte[]))
  87                                         return buffer;
  88
  89 #if NET_2_0
  90                                 if (type == typeof (Bitmap) && Path.GetExtension (parts [0]) == ".ico") {
  91                                         MemoryStream ms = new MemoryStream (buffer);
  92                                         return new Icon (ms).ToBitmap ();
  93                                 }
  94 #endif
  95
  96                                 return Activator.CreateInstance(type, BindingFlags.CreateInstance
  97                                         | BindingFlags.Public | BindingFlags.Instance, null,
  98                                         new object[] { new MemoryStream (buffer) }, culture);
  99                         }
 100
 101                         public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType) {
 102                                 if (destinationType != typeof(String)) {
 103                                         return base.ConvertTo (context, culture, value, destinationType);
 104                                 }
 105
 106                                 return ((ResXFileRef)value).ToString();
 107                         }
 108                 }
 109
 110                 private string filename;
 111                 private string typename;
 112                 private Encoding textFileEncoding;
 113
 114                 public ResXFileRef (string fileName, string typeName)
 115                 {
 116 #if NET_2_0
 117                         if (fileName == null)
 118                                 throw new ArgumentNullException ("fileName");
 119                         if (typeName == null)
 120                                 throw new ArgumentNullException ("typeName");
 121 #endif
 122
 123                         this.filename = fileName;
 124                         this.typename = typeName;
 125                 }
 126
 127 #if NET_2_0
 128                 public
 129 #else
 130                 internal
 131 #endif
 132                 ResXFileRef (string fileName, string typeName, Encoding textFileEncoding)
 133                         : this (fileName, typeName)
 134                 {
 135                         this.textFileEncoding = textFileEncoding;
 136                 }
 137
 138 #if NET_2_0
 139                 public
 140 #else
 141                 internal
 142 #endif
 143                 string FileName {
 144                         get { return filename; }
 145                 }
 146
 147 #if NET_2_0
 148                 public
 149 #else
 150                 internal
 151 #endif
 152                 Encoding TextFileEncoding {
 153                         get { return textFileEncoding; }
 154                 }
 155
 156 #if NET_2_0
 157                 public
 158 #else
 159                 internal
 160 #endif
 161                 string TypeName {
 162                         get { return typename; }
 163                 }
 164
 165                 public override string ToString() {
 166                         StringBuilder sb = new StringBuilder ();
 167                         if (filename != null) {
 168                                 sb.Append (filename);
 169                         }
 170                         sb.Append (';');
 171                         if (typename != null) {
 172                                 sb.Append (typename);
 173                         }
 174                         if (textFileEncoding != null) {
 175                                 sb.Append (';');
 176                                 sb.Append (textFileEncoding.WebName);
 177                         }
 178                         return sb.ToString ();
 179                 }
 180
 181                 internal static string [] Parse (string fileRef)
 182                 {
 183                         // we cannot return ResXFileRef, as that would mean we'd have to
 184                         // instantiate the encoding, and we do not always need this
 185
 186                         if (fileRef == null)
 187                                 throw new ArgumentNullException ("fileRef");
 188
 189                         return fileRef.Split (';');
 190                 }
 191         }
 192 }