def parserule(self, rule_str):
class State:
matching_static = 0
matching_converter = 1
matching_name = 2
ignore_char = 3
failed = 4
done = 5
state = State.matching_static
static_buf = ""
conv_buf = ""
name_buf = ""
self.valid = False
self.matcher = CombiMatcher()
rule_str += ' '
rule_length = len(rule_str)
for i in range(rule_length):
c = rule_str[i]
do_store_static = False
do_store_converter_and_name = False
if state == State.matching_static:
if c == '\\':
state = State.ignore_char
elif c == '<':
state = State.matching_converter
do_store_static = True
elif i == rule_length -1:
state = State.done
do_store_static = True
else:
static_buf += c
elif state == State.matching_converter:
if c == ':':
state = State.matching_name
elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._":
conv_buf += c
else:
state = State.failed
elif state == State.matching_name:
if c == '>':
state = State.matching_static
do_store_converter_and_name = True
elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._":
name_buf += c
else:
state = State.failed
elif state == State.ignore_char:
state = State.matching_static
elif state == State.failed:
pass
elif state == State.done:
pass
# store static buffer if needed by state
if do_store_static:
if len(static_buf) > 0:
self.__add_static_matcher(static_buf)
static_buf = ""
# store converter if needed by state
if do_store_converter_and_name:
if len(conv_buf) > 0 \
and len(name_buf) > 0:
self.__add_dynamic_matcher(conv_buf, name_buf)
conv_buf = ""
name_buf = ""
if state is State.done:
self.valid = True
else:
self.valid = False
self.matcher = None
class Rule(object):
def __init__(self, rule_str, extra_converters = {}):
self.valid = False
self.matcher = None
self.rule_str = None
global _converters
self.converters = _converters
self.converters.update(extra_converters)
self.setrule(rule_str)
def setrule(self, rule_str):
self.parserule(rule_str)
if not self.isvalid():
self.rule_str = None
raise InvalidRule("Invalid rule: '%s'" % rule_str)
self.rule_str = rule_str
def rule(self):
return self.rule_str
def parserule(self, rule_str):
class State:
matching_static = 0
matching_converter = 1
matching_name = 2
ignore_char = 3
failed = 4
done = 5
state = State.matching_static
static_buf = ""
conv_buf = ""
name_buf = ""
self.valid = False
self.matcher = CombiMatcher()
rule_str += ' '
rule_length = len(rule_str)
for i in range(rule_length):
c = rule_str[i]
do_store_static = False
do_store_converter_and_name = False
if state == State.matching_static:
if c == '\\':
state = State.ignore_char
elif c == '<':
state = State.matching_converter
do_store_static = True
elif i == rule_length -1:
state = State.done
do_store_static = True
else:
static_buf += c
elif state == State.matching_converter:
if c == ':':
state = State.matching_name
elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._":
conv_buf += c
else:
state = State.failed
elif state == State.matching_name:
if c == '>':
state = State.matching_static
do_store_converter_and_name = True
elif c in "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789._":
name_buf += c
else:
state = State.failed
elif state == State.ignore_char:
state = State.matching_static
elif state == State.failed:
pass
elif state == State.done:
pass
# store static buffer if needed by state
if do_store_static:
if len(static_buf) > 0:
self.__add_static_matcher(static_buf)
static_buf = ""
# store converter if needed by state
if do_store_converter_and_name:
if len(conv_buf) > 0 \
and len(name_buf) > 0:
self.__add_dynamic_matcher(conv_buf, name_buf)
conv_buf = ""
name_buf = ""
if state is State.done:
self.valid = True
else:
self.valid = False
self.matcher = None
def __add_static_matcher(self, string):
m = StaticStringMatcher(string)
self.matcher.add(m)
def __add_dynamic_matcher(self, converter, name):
m = self.__get_matcher(converter)
if m is None:
return None
self.matcher.add(m, name)
def __get_matcher(self, converter):
c = self.converters.get(converter, None)
m = c()
return m
def isvalid(self):
return self.valid
def test(self, check_str):
if not self.valid:
return None
result = TestResult(self)
result.setmatch(False)
if check_str is not None and len(check_str) > 0:
for char in check_str:
s = self.matcher.feed(char)
if s:
result.setmatch(True)
else:
result.setmatch(False)
break
if not self.matcher.full_match():
result.setmatch(False)
v = self.matcher.getvalue()
if v is not None:
result.setparams(v)
self.matcher.reset()
return result
