|
@@ -25,96 +25,115 @@ PART_VERSION_SIZE = 21
|
|
|
|
|
|
|
|
|
def auto_int(x):
|
|
|
- return int(x, 0)
|
|
|
+ return int(x, 0)
|
|
|
+
|
|
|
|
|
|
def str_to_bytes_pad(string, size):
|
|
|
- str_bytes = string.encode()
|
|
|
- num_bytes = len(str_bytes)
|
|
|
- if (num_bytes >= size):
|
|
|
- str_bytes = str_bytes[:size - 1] + '\0'.encode()
|
|
|
- else:
|
|
|
- str_bytes += '\0'.encode() * (size - num_bytes)
|
|
|
- return str_bytes
|
|
|
+ str_bytes = string.encode()
|
|
|
+ num_bytes = len(str_bytes)
|
|
|
+ if num_bytes >= size:
|
|
|
+ str_bytes = str_bytes[: size - 1] + "\0".encode()
|
|
|
+ else:
|
|
|
+ str_bytes += "\0".encode() * (size - num_bytes)
|
|
|
+ return str_bytes
|
|
|
+
|
|
|
|
|
|
def create_tag(args, in_bytes, size):
|
|
|
# JAM CRC32 is bitwise not and unsigned
|
|
|
- crc = (~binascii.crc32(in_bytes) & 0xFFFFFFFF)
|
|
|
+ crc = ~binascii.crc32(in_bytes) & 0xFFFFFFFF
|
|
|
+
|
|
|
+ tag = bytearray()
|
|
|
+ tag += struct.pack(">I", args.part_id)
|
|
|
+ tag += struct.pack(">I", size)
|
|
|
+ tag += struct.pack(">H", args.part_flags)
|
|
|
+ tag += str_to_bytes_pad(args.part_name, PART_NAME_SIZE)
|
|
|
+ tag += str_to_bytes_pad(args.part_version, PART_VERSION_SIZE)
|
|
|
+ tag += struct.pack(">I", crc)
|
|
|
|
|
|
- tag = bytearray()
|
|
|
- tag += struct.pack('>I', args.part_id)
|
|
|
- tag += struct.pack('>I', size)
|
|
|
- tag += struct.pack('>H', args.part_flags)
|
|
|
- tag += str_to_bytes_pad(args.part_name, PART_NAME_SIZE)
|
|
|
- tag += str_to_bytes_pad(args.part_version, PART_VERSION_SIZE)
|
|
|
- tag += struct.pack('>I', crc)
|
|
|
+ return tag
|
|
|
|
|
|
- return tag
|
|
|
|
|
|
def create_output(args):
|
|
|
- in_st = os.stat(args.input_file)
|
|
|
- in_size = in_st.st_size
|
|
|
+ in_st = os.stat(args.input_file)
|
|
|
+ in_size = in_st.st_size
|
|
|
|
|
|
- in_f = open(args.input_file, 'r+b')
|
|
|
- in_bytes = in_f.read(in_size)
|
|
|
- in_f.close()
|
|
|
+ in_f = open(args.input_file, "r+b")
|
|
|
+ in_bytes = in_f.read(in_size)
|
|
|
+ in_f.close()
|
|
|
|
|
|
- tag = create_tag(args, in_bytes, in_size)
|
|
|
+ tag = create_tag(args, in_bytes, in_size)
|
|
|
+
|
|
|
+ out_f = open(args.output_file, "w+b")
|
|
|
+ out_f.write(tag)
|
|
|
+ out_f.close()
|
|
|
|
|
|
- out_f = open(args.output_file, 'w+b')
|
|
|
- out_f.write(tag)
|
|
|
- out_f.close()
|
|
|
|
|
|
def main():
|
|
|
- global args
|
|
|
-
|
|
|
- parser = argparse.ArgumentParser(description='')
|
|
|
-
|
|
|
- parser.add_argument('--flags',
|
|
|
- dest='part_flags',
|
|
|
- action='store',
|
|
|
- type=auto_int,
|
|
|
- help='Partition Flags')
|
|
|
-
|
|
|
- parser.add_argument('--id',
|
|
|
- dest='part_id',
|
|
|
- action='store',
|
|
|
- type=auto_int,
|
|
|
- help='Partition ID')
|
|
|
-
|
|
|
- parser.add_argument('--input-file',
|
|
|
- dest='input_file',
|
|
|
- action='store',
|
|
|
- type=str,
|
|
|
- help='Input file')
|
|
|
-
|
|
|
- parser.add_argument('--output-file',
|
|
|
- dest='output_file',
|
|
|
- action='store',
|
|
|
- type=str,
|
|
|
- help='Output file')
|
|
|
-
|
|
|
- parser.add_argument('--name',
|
|
|
- dest='part_name',
|
|
|
- action='store',
|
|
|
- type=str,
|
|
|
- help='Partition Name')
|
|
|
-
|
|
|
- parser.add_argument('--version',
|
|
|
- dest='part_version',
|
|
|
- action='store',
|
|
|
- type=str,
|
|
|
- help='Partition Version')
|
|
|
-
|
|
|
- args = parser.parse_args()
|
|
|
-
|
|
|
- if ((not args.part_flags) or
|
|
|
- (not args.part_id) or
|
|
|
- (not args.input_file) or
|
|
|
- (not args.output_file) or
|
|
|
- (not args.part_name) or
|
|
|
- (not args.part_version)):
|
|
|
- parser.print_help()
|
|
|
- else:
|
|
|
- create_output(args)
|
|
|
+ global args
|
|
|
+
|
|
|
+ parser = argparse.ArgumentParser(description="")
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--flags",
|
|
|
+ dest="part_flags",
|
|
|
+ action="store",
|
|
|
+ type=auto_int,
|
|
|
+ help="Partition Flags",
|
|
|
+ )
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--id",
|
|
|
+ dest="part_id",
|
|
|
+ action="store",
|
|
|
+ type=auto_int,
|
|
|
+ help="Partition ID",
|
|
|
+ )
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--input-file",
|
|
|
+ dest="input_file",
|
|
|
+ action="store",
|
|
|
+ type=str,
|
|
|
+ help="Input file",
|
|
|
+ )
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--output-file",
|
|
|
+ dest="output_file",
|
|
|
+ action="store",
|
|
|
+ type=str,
|
|
|
+ help="Output file",
|
|
|
+ )
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--name",
|
|
|
+ dest="part_name",
|
|
|
+ action="store",
|
|
|
+ type=str,
|
|
|
+ help="Partition Name",
|
|
|
+ )
|
|
|
+
|
|
|
+ parser.add_argument(
|
|
|
+ "--version",
|
|
|
+ dest="part_version",
|
|
|
+ action="store",
|
|
|
+ type=str,
|
|
|
+ help="Partition Version",
|
|
|
+ )
|
|
|
+
|
|
|
+ args = parser.parse_args()
|
|
|
+
|
|
|
+ if (
|
|
|
+ (not args.part_flags)
|
|
|
+ or (not args.part_id)
|
|
|
+ or (not args.input_file)
|
|
|
+ or (not args.output_file)
|
|
|
+ or (not args.part_name)
|
|
|
+ or (not args.part_version)
|
|
|
+ ):
|
|
|
+ parser.print_help()
|
|
|
+ else:
|
|
|
+ create_output(args)
|
|
|
+
|
|
|
|
|
|
main()
|