def make_localizer(current_locale_name, translation_directories, domain=None):
""" Create a :class:`pyramid.i18n.Localizer` object
corresponding to the provided locale name from the
translations found in the list of translation directories."""
locale = Locale.parse(current_locale_name)
translations = Translations(domain=domain)
translations._catalog = {}
locales_to_try = []
if not current_locale_name == locale.language:
locales_to_try.append(locale.language)
locales_to_try.append(current_locale_name)
# intent: order locales left to right in least specific to most specific,
# e.g. ['de', 'de_DE']. This services the intent of creating a
# translations object that returns a "more specific" translation for a
# region, but will fall back to a "less specific" translation for the
# locale if necessary. Ordering from least specific to most specific
# allows us to call translations.add in the below loop to get this
# behavior.
for tdir in translation_directories:
locale_dirs = []
for lname in locales_to_try:
ldir = os.path.realpath(os.path.join(tdir, lname))
if os.path.isdir(ldir):
locale_dirs.append(ldir)
for locale_dir in locale_dirs:
messages_dir = os.path.join(locale_dir, 'LC_MESSAGES')
if not os.path.isdir(os.path.realpath(messages_dir)):
continue
for mofile in os.listdir(messages_dir):
mopath = os.path.realpath(os.path.join(messages_dir,
mofile))
if mofile.endswith('.mo') and os.path.isfile(mopath):
with open(mopath, 'rb') as mofp:
domain = mofile[:-3]
dtrans = Translations(mofp, domain)
translations.add(dtrans)
return Localizer(locale=locale, translations=translations)
