def open(self, uri, etag=None):
p = parse.urlparse(uri)
netloc = p.hostname
if p.port:
netloc += ":" + p.port
uri = parse.urlunparse((p.scheme, netloc, p[2], p[3], p[4], p[5]))
req = request.Request(uri)
if p.username and p.password:
header = base64.encodestring("%s:%s" % (p.username, p.password))
req.add_header("Authorization", "Basic " + header)
if etag:
req.add_header("If-None-Match", etag)
try:
fp = request.urlopen(req)
except request.URLError as exc:
raise NotFound("URL '%s' not found (URLError)" % uri)
except request.HTTPError as exc:
if exc.code == 304:
raise NotModified("URL '%s' has not been modified" % uri)
raise NotFound(
"URL '%s' could not be found (HTTP response %s)" % (uri, exc.code))
class Resource(FpAdaptor):
@property
def etag(self):
info = self.fp.info()
if "etag" in info:
return info["etag"]
return None
@property
def len(self):
return int(self.fp.info()['content-length'])
@property
def labels(self):
return ()
uri = uri
return Resource(fp)
def _scheme(self, uri):
parsed = parse.urlparse(uri)
return parsed.scheme