kernel-rebase.py

#!/usr/env python3

import os
import stat
import sys


def main():

	argc = len(sys.argv)
	if argc < 2:
		print("[ERROR] invalid argument count, expected: " + str(2)
			  + ", got: " + str(argc))
		sys.exit(1)

	file = sys.argv[1]

	# read from file
	buf = None
	with open(file, "r") as fp:
		buf = fp.read()

	if buf is None:
		print("[ERROR] could not open file: " + file + " for reading")
		sys.exit(1)

	num_changes_performed = 0
	for line in buf.split('\n'):
		if "delete mode" in line:
			print("[INFO] deleted file: " + line)
		continue

		if "mode change" in line:
			index = line.find("=>")
			elements = line.split()
			previous = elements[2]
			following = elements[4]
			file_path = elements[5]
			print("[INFO] " + file_path + ": " + following + " => " + previous)
			statbuf = os.stat(file_path)
			mode = statbuf.st_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH
			os.chmod(file_path, mode)
			num_changes_performed += 1

	print("[INFO] done, performed " + str(num_changes_performed) + " changes")

if __name__ == "__main__":
    main()