public static bool FallbackMode(LanguageTag languageTagInstance, string resourceKey,
IReadOnlyDictionary <LanguageTag, ITranslateResource> resources, FallbackExperimenter experimenter)
{
if (resources.TryGetValue(languageTagInstance, out var resource) && resource.CanTranslate(resourceKey))
{
return(true);
}
var suitableTags = experimenter.GetSuitableTags(languageTagInstance).ToList();
if (!suitableTags.Any())
{
return(false);
}
foreach (var tag in suitableTags)
{
if (resources.TryGetValue(tag, out resource) && resource.CanTranslate(resourceKey))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Get resource by given language tag
/// </summary>
/// <param name="languageTag"></param>
/// <returns></returns>
/// <exception cref="ArgumentException"></exception>
public ITranslateResource GetResource(string languageTag)
{
if (string.IsNullOrWhiteSpace(languageTag))
{
return(null);
}
// ReSharper disable once InconsistentlySynchronizedField
if (_langAndResourceMapCache.TryGetValue(languageTag, out var resource))
{
return(resource);
}
var languageTagInstance = LanguageTagManager.Get(languageTag);
if (languageTagInstance == null)
{
throw new ArgumentException($"Cannot resolve an instance of LanguageTag by '{languageTag}'.");
}
if (_resources.TryGetValue(languageTagInstance, out resource))
{
return(resource);
}
var suitableTags = _fallbackExperimenter.GetSuitableTags(languageTagInstance).ToList();
if (!suitableTags.Any())
{
throw new ArgumentException($"Cannot resolve a suitable LanguageTag by '{languageTag}'.");
}
var theMostSuitableTag = suitableTags.First();
if (_resources.TryGetValue(theMostSuitableTag, out resource))
{
return(CacheAndReturn(languageTag, resource));
}
throw new ArgumentException($"Cannot resolve the resource by the given LanguageTag '{languageTag}'");
}
