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"""
Internationalization support.
"""
from django.utils.encoding import force_unicode
from django.utils.functional import lazy, curry
__all__ = ['gettext', 'gettext_noop', 'gettext_lazy', 'ngettext',
'ngettext_lazy', 'string_concat', 'activate', 'deactivate',
'get_language', 'get_language_bidi', 'get_date_formats',
'get_partial_date_formats', 'check_for_language', 'to_locale',
'get_language_from_request', 'templatize', 'ugettext', 'ugettext_lazy',
'ungettext', 'deactivate_all']
# Here be dragons, so a short explanation of the logic won't hurt:
# We are trying to solve two problems: (1) access settings, in particular
# settings.USE_I18N, as late as possible, so that modules can be imported
# without having to first configure Django, and (2) if some other code creates
# a reference to one of these functions, don't break that reference when we
# replace the functions with their real counterparts (once we do access the
# settings).
def delayed_loader(real_name, *args, **kwargs):
"""
Call the real, underlying function. We have a level of indirection here so
that modules can use the translation bits without actually requiring
Django's settings bits to be configured before import.
"""
from django.conf import settings
if settings.USE_I18N:
from django.utils.translation import trans_real as trans
else:
from django.utils.translation import trans_null as trans
# Make the originally requested function call on the way out the door.
return getattr(trans, real_name)(*args, **kwargs)
g = globals()
for name in __all__:
g['real_%s' % name] = curry(delayed_loader, name)
del g, delayed_loader
def gettext_noop(message):
return real_gettext_noop(message)
ugettext_noop = gettext_noop
def gettext(message):
return real_gettext(message)
def ngettext(singular, plural, number):
return real_ngettext(singular, plural, number)
def ugettext(message):
return real_ugettext(message)
def ungettext(singular, plural, number):
return real_ungettext(singular, plural, number)
ngettext_lazy = lazy(ngettext, str)
gettext_lazy = lazy(gettext, str)
ungettext_lazy = lazy(ungettext, unicode)
ugettext_lazy = lazy(ugettext, unicode)
def activate(language):
return real_activate(language)
def deactivate():
return real_deactivate()
def get_language():
return real_get_language()
def get_language_bidi():
return real_get_language_bidi()
def get_date_formats():
return real_get_date_formats()
def get_partial_date_formats():
return real_get_partial_date_formats()
def check_for_language(lang_code):
return real_check_for_language(lang_code)
def to_locale(language):
return real_to_locale(language)
def get_language_from_request(request):
return real_get_language_from_request(request)
def templatize(src):
return real_templatize(src)
def deactivate_all():
return real_deactivate_all()
def _string_concat(*strings):
"""
Lazy variant of string concatenation, needed for translations that are
constructed from multiple parts.
"""
return u''.join([force_unicode(s) for s in strings])
string_concat = lazy(_string_concat, unicode)
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