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view bin/cek.py @ 725:0a896ffe3029
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bsdunzip doesn't seem to unzip from stdin.
author | nanaya <me@nanaya.net> |
---|---|
date | Mon, 19 Aug 2024 17:03:52 +0900 |
parents | 137b18a1898e |
children |
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#!/usr/bin/env python import zlib, os, sys def get_file_crc32(filename): block_size = 1*2**20 return_code = 0 file_crc32 = 0 file_digest = 0 file_handle = open(filename, "rb") if return_code == 0: file_block = file_handle.read(block_size) while file_block: file_digest = zlib.crc32(file_block, file_digest) file_block = file_handle.read(block_size) file_handle.close() file_digest = file_digest & 0xffffffff return "%08X" % file_digest if __name__ == "__main__": for file in sys.argv[1:]: print(f'{file} {get_file_crc32(file)}')