ResXFileRef.cs :  » 2.6.4-mono-.net-core » System.Resources » System » Resources » C# / CSharp Open Source

// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
//
// Authors:
//  Peter Bartok  (pbartok@novell.com)
//  Gert Driesen  (drieseng@users.sourceforge.net)
//

using System;
using System.ComponentModel;
#if NET_2_0
using System.Drawing;
#endif
using System.IO;
using System.Reflection;
using System.Text;

namespace System.Resources{
  [Serializable]
  [TypeConverter(typeof(ResXFileRef.Converter))]
#if INSIDE_SYSTEM_WEB
  internal
#else
  public 
#endif
  class ResXFileRef {
#if INSIDE_SYSTEM_WEB
    internal
#else
    public
#endif
    class Converter : TypeConverter {
      public Converter() {
      }

      public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) {
        return sourceType == typeof(string);
      }

      public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType) {
        return destinationType == typeof(string);
      }

      public override object ConvertFrom(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value) {
        byte[]    buffer;

        if ( !(value is String)) {
          return null;
        }

        string [] parts = ResXFileRef.Parse ((string) value);
#if NET_2_0
        if (parts.Length == 1)
          throw new ArgumentException ("value");
#endif

        Type type = Type.GetType (parts [1]);
#if NET_2_0
        if (type == typeof(string)) {
          Encoding encoding;
          if (parts.Length > 2) {
            encoding = Encoding.GetEncoding (parts [2]);
          } else {
            encoding = Encoding.Default;
          }

          using (TextReader reader = new StreamReader(parts [0], encoding)) {
            return reader.ReadToEnd();
          }
        }
#endif

        using (FileStream file = new FileStream (parts [0], FileMode.Open, FileAccess.Read, FileShare.Read)) {
          buffer = new byte [file.Length];
          file.Read(buffer, 0, (int) file.Length);
        }

#if NET_2_0
        if (type == typeof(System.Byte[]))
          return buffer;

        if (type == typeof (Bitmap) && Path.GetExtension (parts [0]) == ".ico") {
          MemoryStream ms = new MemoryStream (buffer);
          return new Icon (ms).ToBitmap ();
        }

        if (type == typeof (MemoryStream))
          return new MemoryStream (buffer);
#endif

        return Activator.CreateInstance(type, BindingFlags.CreateInstance
          | BindingFlags.Public | BindingFlags.Instance, null, 
          new object[] { new MemoryStream (buffer) }, culture);
      }

      public override object ConvertTo(ITypeDescriptorContext context, System.Globalization.CultureInfo culture, object value, Type destinationType) {
        if (destinationType != typeof(String)) {
          return base.ConvertTo (context, culture, value, destinationType);
        }

        return ((ResXFileRef)value).ToString();
      }
    }

    private string filename;
    private string typename;
    private Encoding textFileEncoding;

    public ResXFileRef (string fileName, string typeName)
    {
#if NET_2_0
      if (fileName == null)
        throw new ArgumentNullException ("fileName");
      if (typeName == null)
        throw new ArgumentNullException ("typeName");
#endif

      this.filename = fileName;
      this.typename = typeName;
    }

#if NET_2_0
    public
#else
    internal
#endif
    ResXFileRef (string fileName, string typeName, Encoding textFileEncoding)
      : this (fileName, typeName) 
    {
      this.textFileEncoding = textFileEncoding;
    }

#if NET_2_0
    public
#else
    internal
#endif
    string FileName {
      get { return filename; }
    }

#if NET_2_0
    public
#else
    internal
#endif
    Encoding TextFileEncoding {
      get { return textFileEncoding; }
    }

#if NET_2_0
    public
#else
    internal
#endif
    string TypeName {
      get { return typename; }
    }

    public override string ToString() {
      StringBuilder sb = new StringBuilder ();
      if (filename != null) {
        sb.Append (filename);
      }
      sb.Append (';');
      if (typename != null) {
        sb.Append (typename);
      }
      if (textFileEncoding != null) {
        sb.Append (';');
        sb.Append (textFileEncoding.WebName);
      }
      return sb.ToString ();
    }

    internal static string [] Parse (string fileRef)
    {
      // we cannot return ResXFileRef, as that would mean we'd have to
      // instantiate the encoding, and we do not always need this

      if (fileRef == null)
        throw new ArgumentNullException ("fileRef");

      return fileRef.Split (';');
    }
  }
}