module I18nData

def recognise_code(type, search)
  search = search.strip
  # common languages first <-> faster in majority of cases
  language_codes = ['EN', 'ES', 'FR', 'DE', 'ZH'] | available_language_codes
  language_codes.each do |language_code|
    options =
      begin
        send(type, language_code)
      rescue NoTranslationAvailable
        next
      end
    options.each do |code, name|
      # support "Dutch" and "Dutch; Flemish", checks for inclusion first to skip the splitting
      # then check for exact match
      return code if name.include?(search) && (name == search || name.split('; ').include?(search))
    end
  end
  nil # not found
end