/// ------------------------------------------------------------------------------------
/// <summary>
/// Loads the valid characters from the specified language definition into a new
/// instance of the <see cref="ValidCharacters"/> class.
/// </summary>
/// <param name="ws">The writing system.</param>
/// <param name="exceptionHandler">The exception handler to use if valid character data
/// cannot be loaded.</param>
/// <returns>A <see cref="ValidCharacters"/> initialized with the valid characters data
/// from the language definition.</returns>
/// ------------------------------------------------------------------------------------
public static ValidCharacters Load(CoreWritingSystemDefinition ws, LoadExceptionDelegate exceptionHandler = null)
{
var validChars = new ValidCharacters();
validChars.LoadException += exceptionHandler;
var invalidChars = new List <string>();
validChars.AddCharactersFromWritingSystem(ws, "main", ValidCharacterType.WordForming, invalidChars);
validChars.AddCharactersFromWritingSystem(ws, "numeric", ValidCharacterType.Numeric, invalidChars);
validChars.AddCharactersFromWritingSystem(ws, "punctuation", ValidCharacterType.Other, invalidChars);
if (invalidChars.Count > 0)
{
var bldr = new StringBuilder();
bldr.AppendFormat("Invalid ValidChars field while loading the {0} writing system. The following characters are invalid:",
ws.DisplayLabel);
foreach (string chr in invalidChars)
{
bldr.Append(Environment.NewLine);
bldr.Append("\t");
bldr.AppendFormat("{0} (U+{1:X4}", chr, (int)chr[0]);
for (int ich = 1; ich < chr.Length; ich++)
{
bldr.AppendFormat(", U+{0:X4}", (int)chr[ich]);
}
bldr.Append(")");
}
validChars.ReportError(new ArgumentException(bldr.ToString(), "ws"));
}
if (invalidChars.Count > 0 && validChars.m_wordFormingCharacters.Count == 0)
{
validChars.m_wordFormingCharacters.AddRange(DefaultWordformingChars);
validChars.Sort(validChars.m_wordFormingCharacters);
}
validChars.InitSortComparer(ws);
return(validChars);
}
