def init_parser():
"""Set up the parser with the grammar to be recognized.
"""
# CORE
digit = h.ch_range(0x30, 0x39)
alpha = h.choice(h.ch_range(0x41, 0x5a), h.ch_range(0x61, 0x7a))
space = h.in_(b" \t\n\r\f\v")
# AUX.
plus = h.ch(b'+')
slash = h.ch(b'/')
equals = h.ch(b'=')
bsfdig = h.choice(alpha, digit, plus, slash)
bsfdig_4bit = h.in_(b"AEIMQUYcgkosw048")
bsfdig_2bit = h.in_(b"AQgw")
base64_3 = h.repeat_n(bsfdig, 4)
base64_2 = h.sequence(bsfdig, bsfdig, bsfdig_4bit, equals)
base64_1 = h.sequence(bsfdig, bsfdig_2bit, equals, equals)
base64 = h.action(
h.sequence(h.many(base64_3), h.optional(h.choice(base64_2, base64_1))),
act_base64)
# TODO This is not quite the same as the C example, with uses act_ignore.
# But I can't get hammer to filter any value returned by act_ignore.
ws = h.ignore(h.many(space))
document = h.action(h.sequence(ws, base64, ws, h.end_p()), act_document)
# BUG sometimes inputs that should just don't parse.
# It *seemed* to happen mostly with things like "bbbbaaaaBA==".
# Using less actions seemed to make it less likely.
return document
def init_parser():
"""Set up the parser with the grammar to be recognized.
"""
# CORE
digit = h.ch_range(0x30, 0x39)
alpha = h.choice(h.ch_range(0x41, 0x5a), h.ch_range(0x61, 0x7a))
space = h.in_(" \t\n\r\f\v")
# AUX.
plus = h.ch('+')
slash = h.ch('/')
equals = h.ch('=')
bsfdig = h.choice(alpha, digit, plus, slash)
bsfdig_4bit = h.in_("AEIMQUYcgkosw048")
bsfdig_2bit = h.in_("AQgw")
base64_3 = h.repeat_n(bsfdig, 4)
base64_2 = h.sequence(bsfdig, bsfdig, bsfdig_4bit, equals)
base64_1 = h.sequence(bsfdig, bsfdig_2bit, equals, equals)
base64 = h.action(h.sequence(h.many(base64_3),
h.optional(h.choice(base64_2,
base64_1))),
act_base64)
# TODO This is not quite the same as the C example, with uses act_ignore.
# But I can't get hammer to filter any value returned by act_ignore.
ws = h.ignore(h.many(space))
document = h.action(h.sequence(ws, base64, ws, h.end_p()),
act_document)
# BUG sometimes inputs that should just don't parse.
# It *seemed* to happen mostly with things like "bbbbaaaaBA==".
# Using less actions seemed to make it less likely.
return document
def init_parser():
"""Return a parser with the grammar to be recognized.
"""
# CORE
# This is a direct translation of the C example. In C the literal 0x30
# is interchangable with the char literal '0' (note the single quotes).
# This is not the case in Python.
# TODO In the interests of being more Pythonic settle on either string
# literals, or integers
digit = h.ch_range(0x30, 0x39)
alpha = h.choice(h.ch_range(0x41, 0x5a), h.ch_range(0x61, 0x7a))
space = h.in_(" \t\n\r\f\v")
# AUX.
plus = h.ch('+')
slash = h.ch('/')
equals = h.action(h.ch('='), act_equals)
bsfdig = h.action(h.choice(alpha, digit, plus, slash), act_bsfdig)
bsfdig_4bit = h.action(h.in_("AEIMQUYcgkosw048"), act_bsfdig_4bit)
bsfdig_2bit = h.action(h.in_("AQgw"), act_bsfdig_2bit)
base64_3 = h.action(h.repeat_n(bsfdig, 4), act_base64_3)
base64_2 = h.action(h.sequence(bsfdig, bsfdig, bsfdig_4bit, equals),
act_base64_2)
base64_1 = h.action(h.sequence(bsfdig, bsfdig_2bit, equals, equals),
act_base64_1)
base64 = h.action(h.sequence(h.many(base64_3),
h.optional(h.choice(base64_2,
base64_1))),
act_base64)
# TODO This is not quite the same as the C example, with uses act_ignore.
# But I can't get hammer to filter any value returned by act_ignore.
ws = h.ignore(h.many(space))
document = h.action(h.sequence(ws, base64, ws, h.end_p()),
act_document)
# BUG sometimes inputs that should just don't parse.
# It *seemed* to happen mostly with things like "bbbbaaaaBA==".
# Using less actions seemed to make it less likely.
return document
def length_block():
parser = h.sequence(
h.ch('\x01'),
h.uint16(),
h.and_(h._h_length_value(h.uint32(), h.ch_range('\x00', '\xff'))),
h.uint32(),
h.many(h.ch_range('\x00', '\xff')),
h.end_p())
return parser
def basic_consume_parser():
parser = h.sequence(
h.ch('\x01'), # type
h.uint16(), # Channel
h.uint32(), # Length
h.token("\x00\x3c"), # Class
h.token("\x00\x14"), # Method
# Arguments
h.uint16(), # Ticket
# how do you parse that long message? #Queue
h.many(h.ch_range('\x00', '\xff')),
# consumer-tag
h.end_p()
)
return parser
def queue_declare_ok_parser():
parser = h.sequence(
h.ch('\x01'), # type
h.uint16(), # Channel
h.uint32(), # Length
h.token("\x00\x32"), # Class
h.token("\x00\x0b"), # Method
# Arguments
#how do you parse that long message? #Queue
h.many(h.ch_range('\x00', '\xff')),
#h.uint32(), # message-count
#h.uint32(), # consumer-count
h.end_p()
)
return parser
def queue_declare_parser():
parser = h.sequence(
h.ch('\x01'), # type
h.uint16(), # Channel
h.uint32(), # Length
h.token("\x00\x32"), # Class
h.token("\x00\x0a"), # Method
# Arguments
h.uint16(), # Ticket
# how do you parse that long message?#Queue
h.many(h.ch_range('\x00', '\xff')),
#When you parse this out... (, ,, , 0L, ('','','',''))
h.end_p()
)
return parser
def init_parser():
# CORE
digit = h.ch_range(0x30, 0x39)
alpha = h.choice(h.ch_range(0x41, 0x5a), h.ch_range(0x61, 0x7a))
# AUX.
plus = h.ch(b'+')
slash = h.ch(b'/')
equals = h.ch(b'=')
bsfdig = h.choice(alpha, digit, plus, slash)
bsfdig_4bit = h.in_(b'AEIMQUYcgkosw048')
bsfdig_2bit = h.in_(b'AQgw')
base64_3 = h.repeat_n(bsfdig, 4)
base64_2 = h.sequence(bsfdig, bsfdig, bsfdig_4bit, equals)
base64_1 = h.sequence(bsfdig, bsfdig_2bit, equals, equals)
base64 = h.sequence(h.many(base64_3),
h.optional(h.choice(base64_2, base64_1)))
return h.sequence(h.whitespace(base64), h.whitespace(h.end_p()))
def init_parser():
# CORE
digit = h.ch_range(0x30, 0x39)
alpha = h.choice(h.ch_range(0x41, 0x5a), h.ch_range(0x61, 0x7a))
# AUX.
plus = h.ch('+')
slash = h.ch('/')
equals = h.ch('=')
bsfdig = h.choice(alpha, digit, plus, slash)
bsfdig_4bit = h.in_('AEIMQUYcgkosw048')
bsfdig_2bit = h.in_('AQgw')
base64_3 = h.repeat_n(bsfdig, 4)
base64_2 = h.sequence(bsfdig, bsfdig, bsfdig_4bit, equals)
base64_1 = h.sequence(bsfdig, bsfdig_2bit, equals, equals)
base64 = h.sequence(h.many(base64_3),
h.optional(h.choice(base64_2, base64_1)))
return h.sequence(h.whitespace(base64), h.whitespace(h.end_p()))
import hammer as h
digit = h.ch_range('0','9')
upper = h.ch_range('A', 'Z')
lower = h.ch_range('a', 'z')
chars = h.choice(digit, upper, lower)
alphanumeric = h.many(chars)
words = h.sepBy1(alphanumeric, h.ch(' '))
version = h.token("Version")
allchars = h.ch_range("!", "~")
printable_chars = h.many(allchars)
token = h.many1(printable_chars)
tokens = h.sepBy1(printable_chars, h.choice(h.ch(' '), h.ch('\n'), h.ch('\r')))
# Action Modifiers
def tuple_string(t):
new_coll = list()
for c in t:
if isinstance(c, tuple):
new_coll.append("".join(c))
else:
return "".join(t)
return tuple(new_coll)
def setUpClass(cls):
cls.parser = h.many(h.choice(h.ch("a"), h.ch("b")))
def setUpClass(cls):
cls.parser = h.many(h.choice(h.ch(b"a"), h.ch(b"b")))
import hammer as h
abcd = h.sequence(h.many1(h.uint8()), h.many(h.uint16()),
h.sequence(h.uint8()))
efgh = h.sequence(h.many1(h.uint8()), h.many(h.uint16()),
h.sequence(h.uint8()))
