def uncompact_uint32(self):
if self.pos == self.size(): raise MarshalException()
x = ord(self.getbyte(self.pos)) & 0xe0
if x == 0xe0:
self.unmarshal_uint8()
return self.unmarshal_uint32()
if x == 0xc0:
return self.unmarshal_uint32() & ~0xc0000000L
if x == 0xa0 or x == 0x80:
return self.unmarshal_uint16() & ~0x8000
return self.unmarshal_uint8()
def uncompact_sint32(self):
if self.pos == self.size(): raise MarshalException()
x = ord(self.getbyte(self.pos)) & 0xf0
if x == 0xf0:
self.unmarshal_uint8()
return -(self.unmarshal_uint32())
if x == 0xe0:
self.unmarshal_uint8()
return self.unmarshal_uint32()
if x == 0xd0:
return -(self.unmarshal_uint32() & ~0xd0000000L)
if x == 0xc0:
return self.unmarshal_uint32() & ~0xc0000000L
if x == 0xb0 or x == 0xa0:
return -(self.unmarshal_uint16() & ~0xa000)
if x == 0x90 or x == 0x80:
return self.unmarshal_uint16() & ~0x8000
if x == 0x70 or x == 0x60 or x == 0x50 or x == 0x40:
return -(self.unmarshal_uint8() & ~0x40)
return self.unmarshal_uint8()
def unmarshal_uint8(self):
if self.pos + 1 > self.size(): raise MarshalException()
self.pos += 1
return unpack('!B', self.getstr(self.pos - 1, self.pos))[0]
def unmarshal_os(self):
size = self.uncompact_uint32()
if self.pos + size > self.size(): raise MarshalException()
os = Octets().replace2(self, self.pos, size)
self.pos = self.pos + size
return os
def unmarshalos(self, o):
size = self.uncompact_uint32()
if self.pos + size > self.size(): raise MarshalException()
o.replace2(self, self.pos, size)
self.pos = self.pos + size
return self
def unmarshal_double(self):
if self.pos + 8 > self.size(): raise MarshalException()
self.pos += 8
return unpack('!d', self.getstr(self.pos - 8, self.pos))[0]
def unmarshal_float(self):
if self.pos + 4 > self.size(): raise MarshalException()
self.pos += 4
return unpack('!f', self.getstr(self.pos - 4, self.pos))[0]
def unmarshal_uint16(self):
if self.pos + 2 > self.size(): raise MarshalException()
self.pos += 2
return unpack('!H', self.getstr(self.pos - 2, self.pos))[0]