import binascii
+
def insert_crc(i_filename, fbi_mode=False, o_filename=None):
- if o_filename is None:
- o_filename = i_filename
+ if o_filename is None:
+ o_filename = i_filename
- with open(i_filename, 'rb') as f:
- fdata = f.read()
- fcrc = binascii.crc32(fdata).to_bytes(4, byteorder="big")
- flength = len(fdata).to_bytes(4, byteorder="big")
+ with open(i_filename, 'rb') as f:
+ fdata = f.read()
+ fcrc = binascii.crc32(fdata).to_bytes(4, byteorder="big")
+ flength = len(fdata).to_bytes(4, byteorder="big")
- with open(o_filename, 'wb') as f:
- if fbi_mode:
- f.write(flength)
- f.write(fcrc)
- f.write(fdata)
- else:
- f.write(fdata)
- f.write(fcrc)
+ with open(o_filename, 'wb') as f:
+ if fbi_mode:
+ f.write(flength)
+ f.write(fcrc)
+ f.write(fdata)
+ else:
+ f.write(fdata)
+ f.write(fcrc)