def consume(self, f):
f = _filelike(f)
# Add the Endianess to the format string.
format_string = self.endian + self.format_string
# Calculate the number of necessary bytes.
num_bytes = self.size()
# Unpack the data.
self.value = struct.unpack(format_string, f.read(num_bytes))[0]
def consume(self, f):
f = _filelike(f)
raw = b''
# Read until a null-byte is hit.
char = f.read(1)
while char != b'\x00':
if char == b'':
raise NotEnoughDataException("End of C-string not reached")
raw += char
char = f.read(1)
self.value = raw
def consume(self, f):
f = _filelike(f)
# The length is the first byte
length = f.read(1)
if length == '':
raise NotEnoughDataException("0-length string is invalid P-string")
length = ord(length)
# Attempt to read that length.
self.value = f.read(length)
if len(self.value) < length:
raise NotEnoughDataException(
"Not enough data for P-string, expected: %d, got: %d" %
(length, len(self.value)))