/// <summary>
/// Set extension/private subtags in a single string representation
/// </summary>
public InternalLocaleBuilder SetExtensions(string subtags)
{
if (subtags == null || subtags.Length == 0)
{
ClearExtensions();
return(this);
}
subtags = subtags.Replace(BaseLocale.Separator, LanguageTag.Separator);
StringTokenEnumerator itr = new StringTokenEnumerator(subtags, LanguageTag.Separator);
List <string> extensions = null;
string privateuse = null;
int parsed = 0;
int start;
// Move to first element
itr.MoveNext();
// Make a list of extension subtags
while (!itr.IsDone)
{
string s = itr.Current;
if (LanguageTag.IsExtensionSingleton(s))
{
start = itr.CurrentStart;
string singleton = s;
StringBuilder sb = new StringBuilder(singleton);
itr.MoveNext();
while (!itr.IsDone)
{
s = itr.Current;
if (LanguageTag.IsExtensionSubtag(s))
{
sb.Append(LanguageTag.Separator).Append(s);
parsed = itr.CurrentEnd;
}
else
{
break;
}
itr.MoveNext();
}
if (parsed < start)
{
throw new FormatException("Incomplete extension '" + singleton + "'" /*, start*/);
}
if (extensions == null)
{
extensions = new List <string>(4);
}
extensions.Add(sb.ToString());
}
else
{
break;
}
}
if (!itr.IsDone)
{
string s = itr.Current;
if (LanguageTag.IsPrivateusePrefix(s))
{
start = itr.CurrentStart;
StringBuilder sb = new StringBuilder(s);
itr.MoveNext();
while (!itr.IsDone)
{
s = itr.Current;
if (!LanguageTag.IsPrivateuseSubtag(s))
{
break;
}
sb.Append(LanguageTag.Separator).Append(s);
parsed = itr.CurrentEnd;
itr.MoveNext();
}
if (parsed <= start)
{
throw new FormatException("Incomplete privateuse:" + subtags.Substring(start) /*, start*/);
}
else
{
privateuse = sb.ToString();
}
}
}
if (!itr.IsDone)
{
throw new FormatException("Ill-formed extension subtags:" + subtags.Substring(itr.CurrentStart) /*, itr.CurrentStart*/);
}
return(SetExtensions(extensions, privateuse));
}
