moz2d_dump2bin.py - mozsearch

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#!/usr/bin/env python

# This Source Code Form is subject to the terms of the Mozilla Public

# License, v. 2.0. If a copy of the MPL was not distributed with this

# file, You can obtain one at http://mozilla.org/MPL/2.0/.

import os

from argparse import ArgumentParser

from pathlib import Path

from re import match

from tempfile import mkstemp

def main():

    aparse = ArgumentParser()

    aparse.add_argument(

        "stdout",

        type=Path,

        help="stdout file from Firefox run with MOZ2D_CAPTURE=1",

    args = aparse.parse_args()

    with args.stdout.open() as dump:

        for line in dump:

            result = match(r"^<dump>([0-9A-Fa-f]+)</dump>\s*$", line)

            if result is not None:

                data = bytes.fromhex(result.group(1))

                fd, fn = mkstemp(prefix="moz2d-", suffix=".bin", dir=".")

                os.write(fd, data)

                os.close(fd)

                print(f"wrote {fn}")

if __name__ == "__main__":

    main()