public static LanguageTag ChooseAppLanguage(this HttpContextBase context, IEnumerable <LanguageTag> AppLanguages)
{
string text;
return(LanguageMatching.MatchLists(
context.GetRequestUserLanguages(),
AppLanguages,
null,
null,
out text));
}
public virtual string GetText(string msgid, string msgcomment, LanguageItem[] languages, out LanguageTag o_langtag, int maxPasses = -1)
{
// Validate arguments.
if (maxPasses > (int)LanguageTag.MatchGrade._MaxMatch + 1)
{
maxPasses = (int)LanguageTag.MatchGrade._MaxMatch + 1;
}
// Init.
bool fallbackOnDefault = maxPasses == (int)LanguageTag.MatchGrade._MaxMatch + 1 ||
maxPasses == -1;
// Determine the key for the msg lookup. This may be either msgid or msgid+msgcomment, depending on the prevalent
// MessageContextEnabledFromComment setting.
string msgkey = msgid == null ?
msgid:
TemplateItem.KeyFromMsgidAndComment(msgid, msgcomment, _settings.MessageContextEnabledFromComment);
// Perform language matching based on UserLanguages, AppLanguages, and presence of
// resource under msgid for any particular AppLanguage.
string text;
o_langtag = LanguageMatching.MatchLists(
languages,
GetAppLanguages().Values,
msgkey,
TryGetTextFor,
out text,
Math.Min(maxPasses, (int)LanguageTag.MatchGrade._MaxMatch));
// If match was successfull
if (text != null)
{
// If the msgkey was returned...don't output that but rather the msgid as the msgkey
// may be msgid+msgcomment.
if (text == msgkey)
{
return(msgid);
}
return(text);
}
// Optionally try default language.
if (fallbackOnDefault)
{
o_langtag = LocalizedApplication.Current.DefaultLanguageTag;
return(msgid);
}
//
return(null);
}