def parse_acl(acl):
"""Parse ACL entry.
>>> parse_acl('user=rwx/owner')
('user', 'rwx', 'owner')
>>> parse_acl('" ""user"=rwx/" ""owner"')
(' "user', 'rwx', ' "owner')
>>> parse_acl('user=rwx')
('user', 'rwx', None)
>>> parse_acl('=/f')
(None, '', 'f')
"""
global _acl_rc
if not _acl_rc:
_acl_rc = re.compile(_acl_re, re.I | re.X)
m = _acl_rc.match(acl)
if not m:
return None
target = m.group('tgt')
perm = m.group('perm')
owner = m.group('owner')
if target:
target = unquote_ident(target)
if perm:
perm = perm[1:]
if owner:
owner = unquote_ident(owner[1:])
return (target, perm, owner)
def parse_sql(self, op, sql):
tk = self.tokenizer(sql)
fields = []
values = []
try:
if op == "I":
self.parse_insert(tk, fields, values)
elif op == "U":
self.parse_update(tk, fields, values)
elif op == "D":
self.parse_delete(tk, fields, values)
raise Exception("syntax error")
except StopIteration:
# last sanity check
if len(fields) == 0 or len(fields) != len(values):
raise Exception("syntax error, fields do not match values")
fields = [unquote_ident(f) for f in fields]
values = [unquote_literal(f) for f in values]
return dict(zip(fields, values))
