Implements a locales_utils file to handle language changes

scripts/lua/modules/locales_utils.lua

@@ -0,0 +1,29 @@
+--
+-- (C) 2014-17 - ntop.org
+--
+i18n = require "i18n"
+i18n.loadFile(dirs.installdir..'/scripts/locales/it.lua')
+i18n.loadFile(dirs.installdir..'/scripts/locales/en.lua')
+
+local locales = {}
+
+locales.default_locale = "en"
+
+-- language is a global variable set from C that corresponds to the user default language
+-- it may be null when lua_utils are imported from periodic scripts
+if language == nil then
+   language = locales.default_locale
+end
+
+i18n.setLocale(language)
+
+local available_locales = {
+   {code="en", name=i18n("locales.en")},
+   -- {code="it", name=i18n("locales.it")}
+}
+
+function locales.getAvailableLocales()
+   return available_locales
+end
+
+return locales