def accept_type(available):
"""Returns the best match for the supplied list of media types in the
Accept header.
>>> accept_type([MediaType("text", "plain"), MediaType("text", "html")])
MediaType('text', 'html')
>>> os.environ["HTTP_ACCEPT"] = "text/html, text/*, */*"
>>> accept_type([MediaType("text", "html"), MediaType("image", "gif")])
MediaType('text', 'html')
>>> accept_type([MediaType("text", "plain"), MediaType("image", "gif")])
MediaType('text', 'plain')
>>> accept_type([MediaType("image", "gif")])
MediaType('image', 'gif')
"""
accept = request.accept()
if not accept:
accept = [MediaRange("text", "html"), MediaRange("*", "*")]
for pattern in accept:
for content_type in available:
if isinstance(content_type, MediaType):
parsed = content_type
else:
try:
parsed = parse_media_type(content_type)
except Exception as e:
raise Exception("Couldn't parse media type %s" % content_type)
if pattern.matches(parsed):
return content_type
raise NotAcceptable(available)
def content_type():
"""Returns the content type of the request (if any).
>>> print content_type()
None
>>> os.environ["CONTENT_TYPE"] = "text/plain; charset=UTF-8"
>>> content_type()
MediaType('text', 'plain', charset='UTF-8')
"""
if not os.environ.has_key("CONTENT_TYPE"):
return None
return parse_media_type(os.environ["CONTENT_TYPE"])