/usr/lib/python2.7/dist-packages/zope/i18n/locales/provider.py is in python-zope.i18n 4.1.0-1.
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#
# Copyright (c) 2004 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Locale Provider
The Locale Provider looks up locales and loads them from the XML data, if
necessary.
"""
import os
from zope.interface import implementer
from zope.i18n.interfaces.locales import ILocaleProvider
class LoadLocaleError(Exception):
"""This error is raised if a locale cannot be loaded."""
@implementer(ILocaleProvider)
class LocaleProvider(object):
"""A locale provider that get's its data from the XML data."""
def __init__(self, locale_dir):
self._locales = {}
self._locale_dir = locale_dir
def loadLocale(self, language=None, country=None, variant=None):
"""See zope.i18n.interfaces.locales.ILocaleProvider"""
# Creating the filename
if language == None and country == None and variant == None:
filename = 'root.xml'
else:
filename = language
if country is not None:
filename += '_'+country
if variant is not None:
if '_' not in filename:
filename += '_'
filename += '_'+variant
filename += '.xml'
# Making sure we have this locale
path = os.path.join(self._locale_dir, filename)
if not os.path.exists(path):
raise LoadLocaleError(
'The desired locale is not available.\nPath: %s' % path)
# Import here to avoid circular imports
from zope.i18n.locales.xmlfactory import LocaleFactory
# Let's get it!
locale = LocaleFactory(path)()
self._locales[(language, country, variant)] = locale
def getLocale(self, language=None, country=None, variant=None):
"""See zope.i18n.interfaces.locales.ILocaleProvider"""
# We want to be liberal in what we accept, but the standard is lower
# case language codes, upper case country codes, and upper case
# variants, so coerce case here.
if language:
language = language.lower()
if country:
country = country.upper()
if variant:
variant = variant.upper()
if (language, country, variant) not in self._locales:
self.loadLocale(language, country, variant)
return self._locales[(language, country, variant)]
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