1 from django.core.urlresolvers import RegexURLPattern, RegexURLResolver

     2 from django.core.exceptions import ImproperlyConfigured

     3 

     4 __all__ = ['handler404', 'handler500', 'include', 'patterns', 'url']

     5 

     6 handler404 = 'django.views.defaults.page_not_found'

     7 handler500 = 'django.views.defaults.server_error'

     8 

     9 def include(arg, namespace=None, app_name=None):

    10     if isinstance(arg, tuple):

    11         # callable returning a namespace hint

    12         if namespace:

    13             raise ImproperlyConfigured('Cannot override the namespace for a dynamic module that provides a namespace')

    14         urlconf_module, app_name, namespace = arg

    15     else:

    16         # No namespace hint - use manually provided namespace

    17         urlconf_module = arg

    18     return (urlconf_module, app_name, namespace)

    19 

    20 def patterns(prefix, *args):

    21     pattern_list = []

    22     for t in args:

    23         if isinstance(t, (list, tuple)):

    24             t = url(prefix=prefix, *t)

    25         elif isinstance(t, RegexURLPattern):

    26             t.add_prefix(prefix)

    27         pattern_list.append(t)

    28     return pattern_list

    29 

    30 def url(regex, view, kwargs=None, name=None, prefix=''):

    31     if isinstance(view, (list,tuple)):

    32         # For include(...) processing.

    33         urlconf_module, app_name, namespace = view

    34         return RegexURLResolver(regex, urlconf_module, kwargs, app_name=app_name, namespace=namespace)

    35     else:

    36         if isinstance(view, basestring):

    37             if not view:

    38                 raise ImproperlyConfigured('Empty URL pattern view name not permitted (for pattern %r)' % regex)

    39             if prefix:

    40                 view = prefix + '.' + view

    41         return RegexURLPattern(regex, view, kwargs, name)

    42