/// <summary> Extracts the subtypes from the specified attribute name.
///
/// For example, if the attribute name is cn;lang-ja;phonetic,
/// this method returns an array containing lang-ja and phonetic.
///
/// </summary>
/// <param name="attrName"> Name of the attribute from which to extract
/// the subtypes.
///
/// </param>
/// <returns> An array subtypes or null if the attribute has none.
///
/// @throws IllegalArgumentException if attrName is null
/// </returns>
public static System.String[] getSubtypes(System.String attrName)
{
if ((System.Object)attrName == null)
{
throw new System.ArgumentException("Attribute name cannot be null");
}
SupportClass.Tokenizer st = new SupportClass.Tokenizer(attrName, ";");
System.String[] subTypes = null;
int cnt = st.Count;
if (cnt > 0)
{
st.NextToken(); // skip over basename
subTypes = new System.String[cnt - 1];
int i = 0;
while (st.HasMoreTokens())
{
subTypes[i++] = st.NextToken();
}
}
return(subTypes);
}