public Encoding LookupEncoding(string tryEncoding) {
Encoding encoding = null;
if (tryEncoding == "windows-1252") {
encoding = new Windows1252Encoding();
} else {
try {
encoding = Encoding.GetEncoding(tryEncoding);
} catch (ArgumentException) {
// The user didn't present a valid string such as "utf-8".
// We're supposed to do auto-encoding here, but I'm too lazy. Guess
// at "utf-8". Don't throw an error.
// http://www.w3.org/TR/FileAPI/#encoding-determination
//
// Silverlight actually only supports UTF-8 and UTF-16, so this
// fallback will happen lots.
// http://msdn.microsoft.com/en-us/library/system.text.encoding(v=vs.95).aspx
encoding = Encoding.UTF8;
}
}
return encoding;
}
/// <summary>
/// Return a <see cref="Encoding" /> object associated with the specified <see cref="Charset" />.
/// The Encoding object is associated with custom implementations for the
/// <see cref"EncoderFallback" /> and <see cref"DecoderFallback" /> objects so
/// that it is possible to determine whether any replacement occurred during decoding.
/// </summary>
/// <param name="charset"></param>
/// <returns></returns>
public static Encoding GetEncoding(Charset charset)
{
var decoderFallback = new CustomReplacementDecoderFallback();
var encoderFallback = EncoderFallback.ReplacementFallback;
switch (charset)
{
case Charset.Greece:
{
var encoding = Windows1253Encoding.Create(
encoderFallback
, decoderFallback)
;
return(encoding);
}
case Charset.CentralEasternEurope:
{
var encoding = Windows1250Encoding.Create(
encoderFallback
, decoderFallback)
;
return(encoding);
}
case Charset.WesternEurope:
{
var encoding = Windows1252Encoding.Create(
encoderFallback
, decoderFallback)
;
return(encoding);
}
case Charset.UnicodeBe:
{
var cp = Encoding.BigEndianUnicode.CodePage;
var encoding = Encoding.GetEncoding(cp
, EncoderFallback.ReplacementFallback
, decoderFallback
);
return(encoding);
}
case Charset.UnicodeLe:
{
var cp = Encoding.Unicode.CodePage;
var encoding = Encoding.GetEncoding(cp
, EncoderFallback.ReplacementFallback
, decoderFallback
);
return(encoding);
}
case Charset.UTF8:
default:
{
var cp = Encoding.UTF8.CodePage;
var encoding = Encoding.GetEncoding(cp
, EncoderFallback.ReplacementFallback
, decoderFallback
);
return(encoding);
}
}
}