public IOInfo AddEncoding(RubyContext /*!*/ context, MutableString /*!*/ encoding)
{
if (!encoding.IsAscii())
{
context.ReportWarning(String.Format("Unsupported encoding {0} ignored", encoding.ToAsciiString()));
return(this);
}
if (HasEncoding)
{
throw RubyExceptions.CreateArgumentError("encoding specified twice");
}
string[] parts = encoding.ToString().Split(':');
return(new IOInfo(
_mode,
TryParseEncoding(context, parts[0]),
(parts.Length > 1) ? TryParseEncoding(context, parts[1]) : null
));
}