/// <summary>
/// Utility to fetch locale display data from resource bundle tables. Uses fallback
/// through the "Fallback" resource if available.
/// </summary>
public static string GetTableString(ICUResourceBundle bundle, string tableName,
string subtableName, string item, string defaultValue)
{
string result = null;
try
{
for (; ;)
{
ICUResourceBundle table = bundle.FindWithFallback(tableName);
if (table == null)
{
return(defaultValue);
}
ICUResourceBundle stable = table;
if (subtableName != null)
{
stable = table.FindWithFallback(subtableName);
}
if (stable != null)
{
result = stable.FindStringWithFallback(item);
if (result != null)
{
break; // possible real exception
}
}
// if we get here, stable was null, or there was no string for the item
if (subtableName == null)
{
// may be a deprecated code
string currentName = null;
if (tableName.Equals("Countries"))
{
currentName = LocaleIDs.GetCurrentCountryID(item);
}
else if (tableName.Equals("Languages"))
{
currentName = LocaleIDs.GetCurrentLanguageID(item);
}
if (currentName != null)
{
result = table.FindStringWithFallback(currentName);
if (result != null)
{
break; // possible real exception
}
}
}
// still can't figure it out? try the fallback mechanism
string fallbackLocale = table.FindStringWithFallback("Fallback"); // again, possible exception
if (fallbackLocale == null)
{
return(defaultValue);
}
if (fallbackLocale.Length == 0)
{
fallbackLocale = "root";
}
if (fallbackLocale.Equals(table.GetULocale().GetName()))
{
return(defaultValue);
}
bundle = (ICUResourceBundle)UResourceBundle.GetBundleInstance(
bundle.GetBaseName(), fallbackLocale);
}
}
catch (Exception e)
{
// If something is seriously wrong, we might call getString on a resource that is
// not a string. That will throw an exception, which we catch and ignore here.
}
// If the result is empty return item instead
return((result != null && result.Length > 0) ? result : defaultValue);
}
