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i18n.py
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i18n.py
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import os
from babel import Locale, localedata
from babel.core import LOCALE_ALIASES
from babel.support import Translations
from pylons import config
from pylons import i18n
import pylons
import ckan.i18n
from ckan.plugins import PluginImplementations
from ckan.plugins.interfaces import ITranslations
LOCALE_ALIASES['pt'] = 'pt_BR' # Default Portuguese language to
# Brazilian territory, since
# we don't have a Portuguese territory
# translation currently.
def get_locales_from_config():
''' despite the name of this function it gets the locales defined by
the config AND also the locals available subject to the config. '''
locales_offered = config.get('ckan.locales_offered', '').split()
filtered_out = config.get('ckan.locales_filtered_out', '').split()
locale_default = config.get('ckan.locale_default', 'en')
locale_order = config.get('ckan.locale_order', '').split()
known_locales = get_locales()
all_locales = set(known_locales) | set(locales_offered) | set(locale_order) | set(locale_default)
all_locales -= set(filtered_out)
return all_locales
def _get_locales():
# FIXME this wants cleaning up and merging with get_locales_from_config()
assert not config.get('lang'), \
'"lang" config option not supported - please use ckan.locale_default instead.'
locales_offered = config.get('ckan.locales_offered', '').split()
filtered_out = config.get('ckan.locales_filtered_out', '').split()
locale_default = config.get('ckan.locale_default', 'en')
locale_order = config.get('ckan.locale_order', '').split()
locales = ['en']
if config.get('ckan.i18n_directory'):
i18n_path = os.path.join(config.get('ckan.i18n_directory'), 'i18n')
else:
i18n_path = os.path.dirname(ckan.i18n.__file__)
locales += [l for l in os.listdir(i18n_path) if localedata.exists(l)]
assert locale_default in locales, \
'default language "%s" not available' % locale_default
locale_list = []
for locale in locales:
# no duplicates
if locale in locale_list:
continue
# if offered locales then check locale is offered
if locales_offered and locale not in locales_offered:
continue
# remove if filtered out
if locale in filtered_out:
continue
# ignore the default as it will be added first
if locale == locale_default:
continue
locale_list.append(locale)
# order the list if specified
ordered_list = [locale_default]
for locale in locale_order:
if locale in locale_list:
ordered_list.append(locale)
# added so remove from our list
locale_list.remove(locale)
# add any remaining locales not ordered
ordered_list += locale_list
return ordered_list
available_locales = None
locales = None
locales_dict = None
_non_translated_locals = None
def get_locales():
''' Get list of available locales
e.g. [ 'en', 'de', ... ]
'''
global locales
if not locales:
locales = _get_locales()
return locales
def non_translated_locals():
''' These are the locales that are available but for which there are
no translations. returns a list like ['en', 'de', ...] '''
global _non_translated_locals
if not _non_translated_locals:
locales = config.get('ckan.locale_order', '').split()
_non_translated_locals = [x for x in locales if x not in get_locales()]
return _non_translated_locals
def get_locales_dict():
''' Get a dict of the available locales
e.g. { 'en' : Locale('en'), 'de' : Locale('de'), ... } '''
global locales_dict
if not locales_dict:
locales = _get_locales()
locales_dict = {}
for locale in locales:
locales_dict[str(locale)] = Locale.parse(locale)
return locales_dict
def get_available_locales():
''' Get a list of the available locales
e.g. [ Locale('en'), Locale('de'), ... ] '''
global available_locales
if not available_locales:
available_locales = map(Locale.parse, get_locales())
return available_locales
def _set_lang(lang):
''' Allows a custom i18n directory to be specified.
Creates a fake config file to pass to pylons.i18n.set_lang, which
sets the Pylons root path to desired i18n_directory.
This is needed as Pylons will only look for an i18n directory in
the application root.'''
if config.get('ckan.i18n_directory'):
fake_config = {'pylons.paths': {'root': config['ckan.i18n_directory']},
'pylons.package': config['pylons.package']}
i18n.set_lang(lang, pylons_config=fake_config, class_=Translations)
else:
i18n.set_lang(lang, class_=Translations)
for plugin in PluginImplementations(ITranslations):
pylons.translator.merge(Translations.load(
dirname=plugin.directory(),
locales=plugin.locales(),
domain=plugin.domain()
))
def handle_request(request, tmpl_context):
''' Set the language for the request '''
lang = request.environ.get('CKAN_LANG') or \
config.get('ckan.locale_default', 'en')
if lang != 'en':
set_lang(lang)
tmpl_context.language = lang
return lang
def get_lang():
''' Returns the current language. Based on babel.i18n.get_lang but
works when set_lang has not been run (i.e. still in English). '''
langs = i18n.get_lang()
if langs:
return langs[0]
else:
return 'en'
def set_lang(language_code):
''' Wrapper to pylons call '''
if language_code in non_translated_locals():
language_code = config.get('ckan.locale_default', 'en')
if language_code != 'en':
_set_lang(language_code)