Your IP : 216.73.217.13
#!/usr/bin/env python3
#
# Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: MIT
class AWSVarStoreFile(object):
def __init__(self, file):
self.file = file
def read(self, size):
value = self.file.read(size)
if len(value) != size:
raise Exception("Unexpected end of %s at 0x%x" % (self.file, self.file.tell()))
return value
def read64(self):
return int.from_bytes(self.read(8), byteorder='little', signed=False)
def read32(self):
return int.from_bytes(self.read(4), byteorder='little', signed=False)
def read16(self):
return int.from_bytes(self.read(2), byteorder='little', signed=False)
def read8(self):
return int.from_bytes(self.read(1), byteorder='little', signed=False)
def readdata(self):
size = self.read64()
return self.read(size)
def readstr(self):
return self.readdata().decode('utf-8')
def readguid(self):
return self.read(16)
def readtimestamp(self):
return self.read(16)
def readall(self):
return self.file.read()
def write(self, data):
self.file.write(data)
def write64(self, data):
self.write(data.to_bytes(8, byteorder='little'))
def write32(self, data):
self.write(data.to_bytes(4, byteorder='little'))
def write16(self, data):
self.write(data.to_bytes(2, byteorder='little'))
def write8(self, data):
self.write(data.to_bytes(1, byteorder='little'))
def writedata(self, data):
self.write64(len(data))
self.write(data)
def writestr(self, data):
return self.writedata(data.encode('utf-8'))
def writeguid(self, data):
return self.write(data)
def writetimestamp(self, data):
return self.write(data)