2019-10-04 17:16:12 -07:00
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#!/usr/bin/env python3
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2021-12-30 15:06:42 -08:00
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# Copyright (c) Meta Platforms, Inc. and affiliates.
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2019-10-04 17:16:12 -07:00
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#
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2019-10-15 12:33:16 -07:00
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# This source code is licensed under the MIT license found in the
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# LICENSE file in the root directory of this source tree.
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2019-10-04 17:16:12 -07:00
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"""
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This module exists so that a Windows build can have access to functionality
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2020-10-14 13:18:35 -07:00
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like xxd -i.
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This script is intended to be compliant with both py2 and py3.
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2019-10-04 17:16:12 -07:00
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"""
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import argparse
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2020-10-14 13:18:35 -07:00
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import sys
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2019-10-04 17:16:12 -07:00
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from os import path
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# This is about 80 characters long (4 characters per byte + comma + space)
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BYTES_PER_LINE = 12
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2020-10-14 13:18:35 -07:00
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IS_PY3 = sys.version_info > (3, 0)
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2019-10-04 17:16:12 -07:00
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument("file")
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args = parser.parse_args()
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# Ensure the file exists before writing out anything
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if not path.exists(args.file):
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2020-10-14 13:18:35 -07:00
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raise Exception('File "{}" doesn\'t exist'.format(args.file))
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2019-10-04 17:16:12 -07:00
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with open(args.file, "rb") as f:
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# Could read in chunks instead for extra performance, but this script
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# isn't meant to be used on gigantic files.
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file_as_bytes = f.read()
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# Make groups of bytes that fit in a single line
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lines = [
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file_as_bytes[i : i + BYTES_PER_LINE]
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for i in range(0, len(file_as_bytes), BYTES_PER_LINE)
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]
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2020-10-14 13:18:35 -07:00
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# in python2, byte is same as str and interating it yield strs.
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# in python3, byte is distinct and interating it yield ints.
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print(
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",\n".join(
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", ".join("0x{:02x}".format(b if IS_PY3 else ord(b)) for b in l)
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for l in lines
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)
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)
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2019-10-04 17:16:12 -07:00
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if __name__ == "__main__":
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main()
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