def __init__(self,
pkr,
dec_mapping,
enc_mapping,
dec_default=NotImplemented,
enc_default=NotImplemented):
Adapter.__init__(self, pkr)
self.enc_mapping = enc_mapping
self.enc_default = enc_default
self.dec_mapping = dec_mapping
self.dec_default = dec_default
def __init__(self, underlying, encoding):
Adapter.__init__(self, underlying)
self.encoding = encoding
def __init__(self, lengthpkr):
underlying = Sequence(lengthpkr, Raw(this[0]))
Adapter.__init__(self, underlying)
def __init__(self, lengthpkr):
Adapter.__init__(self, Sequence(lengthpkr, Raw(this[0])))
def __init__(self, lengthpkr):
Adapter.__init__(self, Sequence(lengthpkr, Raw(this[0])))
def __init__(self, underlying, bits):
Adapter.__init__(self, underlying)
self.maxval = 1 << bits
self.midval = self.maxval >> 1
def __init__(self):
self.fmt = _struct.Struct(self.FORMAT)
Adapter.__init__(self, Raw(self.fmt.size))
def __init__(self, bottom, top):
Adapter.__init__(self, bottom)
self.top = top
__slots__ = ["maxval", "midval"]
def __init__(self, underlying, bits):
Adapter.__init__(self, underlying)
self.maxval = 1 << bits
self.midval = self.maxval >> 1
def encode(self, obj, ctx):
return obj + self.maxval if obj < 0 else obj
def decode(self, obj, ctx):
return obj - self.maxval if obj & self.midval else obj
uint24b = Adapter(Sequence(uint8, uint16b),
decode=lambda obj, _: (obj[0] << 16) | obj[1],
encode=lambda obj, _: (obj >> 16, obj & 0xffff))
sint24b = TwosComplement(uint24b, 24)
uint24l = Adapter(uint24b,
decode=lambda obj, _:
((obj >> 16) & 0xff) | (obj & 0xff00) | ((obj & 0xff) << 16),
encode=lambda obj, _:
((obj >> 16) & 0xff) | (obj & 0xff00) | ((obj & 0xff) << 16))
sint24l = TwosComplement(uint24l, 24)
class MaskedInteger(Adapter):
r"""
>>> m = MaskedInteger(uint16l,
... bottom4 = (0, 4),
... upper12 = (4, 12),
def __init__(self, bottom, top):
Adapter.__init__(self, bottom)
self.top = top
def __init__(self, underlying, **flags):
Adapter.__init__(self, underlying)
self.flags = flags
def __init__(self, length, padchar=six.b("\x00"), strict=False):
self.length = _contextify(length)
self.padchar = padchar
self.strict = strict
Adapter.__init__(self, Raw(self.length))
def __init__(self, underlying, encoding):
Adapter.__init__(self, underlying)
self.encoding = encoding
def __init__(self, length, padchar = six.b("\x00"), strict = False):
self.length = _contextify(length)
self.padchar = padchar
self.strict = strict
Adapter.__init__(self, Raw(self.length))
def __init__(self):
self.fmt = _struct.Struct(self.FORMAT)
Adapter.__init__(self, Raw(self.fmt.size))
def __init__(self, underlying, **flags):
Adapter.__init__(self, underlying)
self.flags = flags
def __init__(self, width, swapped=False, signed=False, bytesize=8):
Adapter.__init__(self, Raw(width))
self.width = width
self.swapped = swapped
self.signed = signed
self.bytesize = bytesize
def __init__(self, pkr, dec_mapping, enc_mapping, dec_default = NotImplemented, enc_default = NotImplemented):
Adapter.__init__(self, pkr)
self.enc_mapping = enc_mapping
self.enc_default = enc_default
self.dec_mapping = dec_mapping
self.dec_default = dec_default
def __init__(self, underlying, bits):
Adapter.__init__(self, underlying)
self.maxval = 1 << bits
self.midval = self.maxval >> 1
def __init__(self, width, swapped = False, signed = False, bytesize = 8):
Adapter.__init__(self, Raw(width))
self.width = width
self.swapped = swapped
self.signed = signed
self.bytesize = bytesize
def __init__(self, underlying, **fields):
Adapter.__init__(self, underlying)
self.fields = [(k, offset, (1 << size) - 1)
for k, (offset, size) in fields.items()]
def __init__(self, underlying, **fields):
Adapter.__init__(self, underlying)
self.fields = [(k, offset, (1 << size) - 1) for k, (offset, size) in fields.items()]
def __init__(self, lengthpkr):
underlying = Sequence(lengthpkr, Raw(this[0]))
Adapter.__init__(self, underlying)