Created
June 22, 2020 13:05
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Calculate Header TAGS
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| #!/usr/bin/env python3 | |
| import argparse | |
| import operator | |
| from functools import reduce | |
| def mktag(tag: str) -> int: | |
| letters = [i for i in tag] | |
| letters.reverse() | |
| ords = [ord(i) for i in letters] | |
| shifted = [operator.lshift(i, counter*8) for counter, i in enumerate(ords)] | |
| return reduce(operator.or_, shifted) | |
| def test() -> None: | |
| assert mktag("CASt") == 1128354676 | |
| if __name__ == "__main__": | |
| parser = argparse.ArgumentParser(description='Calculate TAG.') | |
| parser.add_argument('tag', type=str, help='Tag to be calculated') | |
| parser.add_argument('--test', help="run the test suite.", | |
| action="store_true") | |
| args = parser.parse_args() | |
| if args.test: | |
| test() | |
| else: | |
| print(mktag(args.tag)) |
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