def _from_string(self, header_string, value_re=HEADER_VALUE_REGEXP):
# Match header value and remove from string
m = value_re.match(header_string)
if not m:
raise HttpHeaderError('%s: invalid header' % header_string)
value = m.groups()[0]
attr_string = header_string[m.end():]
# Split and parse string of header attributes
attributes = []
for s in split_quoted(attr_string, delimiter=';'):
if not s:
continue
try:
k, v = split_quoted(s.strip(), delimiter='=', remove_quotes=True)
except ValueError:
raise HttpHeaderError("'%s': failed to parse header attribute" % s)
attributes.append((k, v))
return (value, attributes)
def _from_string(self, s):
try:
k, v = split_quoted(s, delimiter='=', remove_quotes=True)
except ValueError:
raise HttpHeaderError
return (k, v)
def parse(self, header_value):
self._headers = [self._from_string(value.strip()) for value in split_quoted(header_value)]
return self._headers
