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from django.core.urlresolvers import (RegexURLPattern,
RegexURLResolver, LocaleRegexURLResolver)
from django.core.exceptions import ImproperlyConfigured
from django.utils.importlib import import_module
from django.utils import six
__all__ = ['handler400', 'handler403', 'handler404', 'handler500', 'include', 'patterns', 'url']
handler400 = 'django.views.defaults.bad_request'
handler403 = 'django.views.defaults.permission_denied'
handler404 = 'django.views.defaults.page_not_found'
handler500 = 'django.views.defaults.server_error'
def include(arg, namespace=None, app_name=None):
if isinstance(arg, tuple):
# callable returning a namespace hint
if namespace:
raise ImproperlyConfigured('Cannot override the namespace for a dynamic module that provides a namespace')
urlconf_module, app_name, namespace = arg
else:
# No namespace hint - use manually provided namespace
urlconf_module = arg
if isinstance(urlconf_module, six.string_types):
urlconf_module = import_module(urlconf_module)
patterns = getattr(urlconf_module, 'urlpatterns', urlconf_module)
# Make sure we can iterate through the patterns (without this, some
# testcases will break).
if isinstance(patterns, (list, tuple)):
for url_pattern in patterns:
# Test if the LocaleRegexURLResolver is used within the include;
# this should throw an error since this is not allowed!
if isinstance(url_pattern, LocaleRegexURLResolver):
raise ImproperlyConfigured(
'Using i18n_patterns in an included URLconf is not allowed.')
return (urlconf_module, app_name, namespace)
def patterns(prefix, *args):
pattern_list = []
for t in args:
if isinstance(t, (list, tuple)):
t = url(prefix=prefix, *t)
elif isinstance(t, RegexURLPattern):
t.add_prefix(prefix)
pattern_list.append(t)
return pattern_list
def url(regex, view, kwargs=None, name=None, prefix=''):
if isinstance(view, (list,tuple)):
# For include(...) processing.
urlconf_module, app_name, namespace = view
return RegexURLResolver(regex, urlconf_module, kwargs, app_name=app_name, namespace=namespace)
else:
if isinstance(view, six.string_types):
if not view:
raise ImproperlyConfigured('Empty URL pattern view name not permitted (for pattern %r)' % regex)
if prefix:
view = prefix + '.' + view
return RegexURLPattern(regex, view, kwargs, name)
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