//---------------------------------------------------------------------
// Private methods
//---------------------------------------------------------------------
private string Encode(UTF32String pSource, IEncodingOption pOption)
{
bool bAllAscii = false;
string encoded = null;
UTF32String prepared = null;
// Step #1: set the flag, all ascii?
bAllAscii = Converter.IsAllAscii(pSource);
// Step #2
if (!bAllAscii)
{
// check if we need to prepare the string
if (null != m_preparer)
{
prepared = m_preparer.Prepare(pSource, pOption);
}
else
{
prepared = pSource;
}
}
// Step #3: check if we need to apply the rules
if (pOption.IsOptionSet(EncodingOption.USE_STD3_RULES))
{
// failed on Dns compatible?
if (!Converter.IsAllDnsCompatible(prepared))
{
throw new Std3RuleCodePointException(string.Format("The input does not conform to the STD 3 ASCII rules(DNS Compatible): {0}", prepared.ToString()));
}
if (0 < prepared.Length)
{
// first char is hyphen?
if (prepared[0] == Converter.CHAR_HYPHEN)
{
throw new Std3RuleCodePointException(string.Format("The input does not conform to the STD 3 ASCII rules(Hyphen at the beginning): {0}", prepared.ToString()));
}
// last char is hyphen?
if (prepared[prepared.Length - 1] == Converter.CHAR_HYPHEN)
{
throw new Std3RuleCodePointException(string.Format("The input does not conform to the STD 3 ASCII rules(Hyphen at the end): {0}", prepared.ToString()));
}
}
}
//Step #4: check if it's all ascii already
if (!bAllAscii)
{
// Step #5: check if it begin with the 'prefix'
if (m_converter.IsBeginWithPrefix(prepared))
{
throw new ACEException(string.Format("The input can't begin with an ACE prefix: {0}", pSource.ToString()));
}
// Step #6:
encoded = m_converter.Encode(prepared, new bool[prepared.Length]);
//Step #7: insert the prefix
encoded = encoded.Insert(0, m_converter.Prefix);
}
else
{
encoded = pSource.ToUTF16();
}
// Step #8
if (encoded.Length > Converter.LABEL_MAX_LENGTH)
{
throw new ACEException(string.Format("Encoded name too long: {0}", encoded.Length));
}
// Done
return(encoded);
}
/// <summary>
/// Calls method to write out drink to console
/// </summary>
/// <param name="drink">
/// Drink to be written out
/// </param>
public void Prepare(IDrink drink)
{
Preparer.Prepare(drink);
}