def normalize_url(url, ref_base_url=None):
'''
:param url:
An absolute URL, absolute path or relative path.
:type url:
URL | string
:param ref_base_url:
Default absolute URL used to expand a path to a full URL.
Uses ``smisk.core.request.url`` if not set.
:type ref_base_url:
URL
:rtype:
URL
'''
is_relative_uri = False
if '/' not in url:
is_relative_uri = True
u = URL()
u.path = url
url = u
else:
url = URL(url) # make a copy so we don't modify the original
if not ref_base_url:
if Application.current and Application.current.request:
ref_base_url = Application.current.request.url
else:
ref_base_url = URL()
if url.scheme is None:
url.scheme = ref_base_url.scheme
if url.user is None:
url.user = ref_base_url.user
if url.user is not None and url.password is None:
url.password = ref_base_url.password
if url.host is None:
url.host = ref_base_url.host
if url.port == 0:
url.port = ref_base_url.port
if is_relative_uri:
base_path = ref_base_url.path
if not base_path:
base_path = '/'
elif not base_path.endswith('/'):
base_path = base_path + '/'
url.path = base_path + url.path
return url
