Method OnLocalizationChanged

Source/Engine/Localization/Localization.cpp:216–328

}

void LocalizationService::OnLocalizationChanged()
{
    PROFILE_CPU();
    PROFILE_MEM(Localization);

    Instance.LocalizedStringTables.Clear();
    Instance.FallbackStringTables.Clear();
    const StringView en(TEXT("en"));

    // Collect all localization tables into mapping locale -> tables
    auto& settings = *LocalizationSettings::Get();
    Dictionary<String, Array<AssetReference<LocalizedStringTable>, InlinedAllocation<32>>> tables;
    for (auto& e : settings.LocalizedStringTables)
    {
        auto table = e.Get();
        if (table && !table->WaitForLoaded())
        {
            tables[table->Locale].Add(table);
        }
    }

    // Pick localization tables for a current language
    auto* table = tables.TryGet(Instance.CurrentLanguage.GetName());
    if (!table)
    {
        // Try using parent culture (eg. en if en-GB is missing)
        const CultureInfo parentLanguage(Instance.CurrentLanguage.GetParentLCID());
        if (parentLanguage.GetName().HasChars())
            table = tables.TryGet(parentLanguage.GetName());
        if (!table)
        {
            // Fallback to Default
            table = tables.TryGet(settings.DefaultFallbackLanguage);
            if (!table)
            {
                // Fallback to English
                table = tables.TryGet(en);
            }
        }
    }

    // Apply localization table
    if (table)
    {
        String locale;
        for (auto& e : tables)
        {
            if (&e.Value == table)
            {
                locale = e.Key;
                break;
            }
        }
        LOG(Info, "Using localization for {0}", locale);
        Instance.LocalizedStringTables.Add(table->Get(), table->Count());
        if (locale != settings.DefaultFallbackLanguage || locale != en)
        {
            // Cache fallback language tables to support additional text resolving in case of missing entries in the current language