def parse_element(script):
content = None
content_length = 0
uns = unhexlify(script)
mark = uns[0]
if 0x00 <= mark and mark <= 0x4B:
content_length = mark
content = script[2:2 + content_length * 2]
script = script[2 + content_length * 2:]
elif 0x4C <= mark and mark <= 0x4E:
if 0x4C == mark:
content_length = int(script[2:4], 16)
content = script[4:4 + content_length * 2]
script = script[4 + content_length * 2:]
if 0x4D == mark:
content_length = int(CT.big_or_little(script[2:6]), 16)
content = script[6:6 + content_length * 2]
script = script[6 + content_length * 2:]
if 0x4E == mark:
content_length = int(CT.big_or_little(script[2:10]), 16)
content = script[10:10 + content_length * 2]
script = script[10 + content_length * 2:]
elif 0x4F == mark:
content = -1
script = script[2:]
elif 0x51 <= mark and mark <= 0x60:
content = mark - 0x50
script = script[2:]
else:
pass
return content, script
def script_to_hash(unhex):
intermed = hashlib.sha256(unhex).digest()
return CT.big_or_little(
hexlify(hashlib.new('ripemd160',
intermed).digest()).decode('ascii'))
def parse_return_type(cls, mark):
if isinstance(mark, str): mark = int(CT.big_or_little(mark), 16)
if isinstance(mark, int): return cls.get_arg_name(mark)
raise ValueError('wrong type for return {}'.format(mark))
