mcs/class/System.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 using System.Drawing;
  30 using System.IO;
  31 using System.Reflection;
  32 using System.Text;
  33
  34 namespace System.Resources {
  35         [Serializable]
  36         [TypeConverter(typeof(ResXFileRef.Converter))]
  37 #if INSIDE_SYSTEM_WEB
  38         internal
  39 #else
  40         public
  41 #endif
  42         class ResXFileRef {
  43 #if INSIDE_SYSTEM_WEB
  44                 internal
  45 #else
  46                 public
  47 #endif
  48                 class Converter : TypeConverter {
  49                         public Converter() {
  50                         }
  51
  52                         public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
  53                                 return sourceType == typeof(string);
  54                         }
  55
  56                         public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
  57                                 return destinationType == typeof(string);
  58                         }
  59
  60                         public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) {
  61                                 byte[]          buffer;
  62
  63                                 if ( !(value is String)) {
  64                                         return null;
  65                                 }
  66
  67                                 string [] parts = ResXFileRef.Parse ((string) value);
  68                                 if (parts.Length == 1)
  69                                         throw new ArgumentException ("value");
  70
  71                                 string filename = parts [0];
  72                                 if (Path.DirectorySeparatorChar == '/')
  73                                         filename = filename.Replace ("\\", "/");
  74
  75                                 Type type = Type.GetType (parts [1]);
  76                                 if (type == typeof(string)) {
  77                                         Encoding encoding;
  78                                         if (parts.Length > 2) {
  79                                                 encoding = Encoding.GetEncoding (parts [2]);
  80                                         } else {
  81                                                 encoding = Encoding.Default;
  82                                         }
  83
  84                                         using (TextReader reader = new StreamReader(filename, encoding)) {
  85                                                 return reader.ReadToEnd();
  86                                         }
  87                                 }
  88
  89                                 using (FileStream file = new FileStream (filename, FileMode.Open, FileAccess.Read, FileShare.Read)) {
  90                                         buffer = new byte [file.Length];
  91                                         file.Read(buffer, 0, (int) file.Length);
  92                                 }
  93
  94                                 if (type == typeof(System.Byte[]))
  95                                         return buffer;
  96
  97                                 if (type == typeof (Bitmap) && Path.GetExtension (filename) == ".ico") {
  98                                         MemoryStream ms = new MemoryStream (buffer);
  99                                         return new Icon (ms).ToBitmap ();
 100                                 }
 101
 102                                 if (type == typeof (MemoryStream))
 103                                         return new MemoryStream (buffer);
 104
 105                                 return Activator.CreateInstance(type, BindingFlags.CreateInstance
 106                                         | BindingFlags.Public | BindingFlags.Instance, null,
 107                                         new object[] { new MemoryStream (buffer) }, culture);
 108                         }
 109
 110                         public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType) {
 111                                 if (destinationType != typeof(String)) {
 112                                         return base.ConvertTo (context, culture, value, destinationType);
 113                                 }
 114
 115                                 return ((ResXFileRef)value).ToString();
 116                         }
 117                 }
 118
 119                 private string filename;
 120                 private string typename;
 121                 private Encoding textFileEncoding;
 122
 123                 public ResXFileRef (string fileName, string typeName)
 124                 {
 125                         if (fileName == null)
 126                                 throw new ArgumentNullException ("fileName");
 127                         if (typeName == null)
 128                                 throw new ArgumentNullException ("typeName");
 129
 130                         this.filename = fileName;
 131                         this.typename = typeName;
 132                 }
 133
 134                 public ResXFileRef (string fileName, string typeName, Encoding textFileEncoding)
 135                         : this (fileName, typeName)
 136                 {
 137                         this.textFileEncoding = textFileEncoding;
 138                 }
 139
 140                 public string FileName {
 141                         get { return filename; }
 142                 }
 143
 144                 public Encoding TextFileEncoding {
 145                         get { return textFileEncoding; }
 146                 }
 147
 148                 public string TypeName {
 149                         get { return typename; }
 150                 }
 151
 152                 public override string ToString() {
 153                         StringBuilder sb = new StringBuilder ();
 154                         if (filename != null) {
 155                                 sb.Append (filename);
 156                         }
 157                         sb.Append (';');
 158                         if (typename != null) {
 159                                 sb.Append (typename);
 160                         }
 161                         if (textFileEncoding != null) {
 162                                 sb.Append (';');
 163                                 sb.Append (textFileEncoding.WebName);
 164                         }
 165                         return sb.ToString ();
 166                 }
 167
 168                 internal static string [] Parse (string fileRef)
 169                 {
 170                         // we cannot return ResXFileRef, as that would mean we'd have to
 171                         // instantiate the encoding, and we do not always need this
 172
 173                         if (fileRef == null)
 174                                 throw new ArgumentNullException ("fileRef");
 175
 176                         return fileRef.Split (';');
 177                 }
 178         }
 179 }