/// <summary>
/// Read the LDML file at the root element and populate the writing system.
/// </summary>
/// <param name="element">Root element</param>
/// <param name="ws">Writing System to populate</param>
/// <remarks>
/// For elements that have * annotation in the LDML spec, we use the extensions NonAltElement
/// and NonAltElements to ignore the elements that have the alt attribute.
/// </remarks>
private void ReadLdml(XElement element, WritingSystemDefinition ws)
{
Debug.Assert(element != null);
Debug.Assert(ws != null);
if (element.Name != "ldml")
throw new ApplicationException("Unable to load writing system definition: Missing <ldml> tag.");
ResetWritingSystemDefinition(ws);
XElement identityElem = element.Element("identity");
if (identityElem != null)
ReadIdentityElement(identityElem, ws);
// Check for the proper LDML version after reading identity element so that we have the proper language tag if an error occurs.
foreach (XElement specialElem in element.NonAltElements("special"))
CheckVersion(specialElem, ws);
XElement charactersElem = element.Element("characters");
if (charactersElem != null)
ReadCharactersElement(charactersElem, ws);
XElement delimitersElem = element.Element("delimiters");
if (delimitersElem != null)
ReadDelimitersElement(delimitersElem, ws);
XElement layoutElem = element.Element("layout");
if (layoutElem != null)
ReadLayoutElement(layoutElem, ws);
XElement numbersElem = element.Element("numbers");
if (numbersElem != null)
ReadNumbersElement(numbersElem, ws);
XElement collationsElem = element.Element("collations");
if (collationsElem != null)
ReadCollationsElement(collationsElem, ws);
foreach (XElement specialElem in element.NonAltElements("special"))
ReadTopLevelSpecialElement(specialElem, ws);
// Validate collations after all of them have been read in (for self-referencing imports)
foreach (CollationDefinition cd in ws.Collations)
{
string message;
cd.Validate(out message);
}
ws.Id = string.Empty;
ws.AcceptChanges();
}