static byte[] EncodeReferencesHeader (ParserOptions options, FormatOptions format, Encoding charset, string field, string value)
{
var encoded = new StringBuilder ();
int lineLength = field.Length + 1;
int count = 0;
foreach (var reference in MimeUtils.EnumerateReferences (value)) {
if (count > 0 && lineLength + reference.Length + 3 > format.MaxLineLength) {
encoded.Append (format.NewLine);
encoded.Append ('\t');
lineLength = 1;
count = 0;
} else {
encoded.Append (' ');
lineLength++;
}
encoded.Append ('<').Append (reference).Append ('>');
lineLength += reference.Length + 2;
count++;
}
encoded.Append (format.NewLine);
return charset.GetBytes (encoded.ToString ());
}