ijar.py - mozsearch

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#!/usr/bin/env python3

# Copyright 2018 The Chromium Authors. All rights reserved.

# Use of this source code is governed by a BSD-style license that can be

# found in the LICENSE file.

import argparse

import os

import subprocess

import sys

from util import build_utils

# python -c "import zipfile; zipfile.ZipFile('test.jar', 'w')"

# du -b test.jar

_EMPTY_JAR_SIZE = 22

def main():

  # The point of this wrapper is to use AtomicOutput so that output timestamps

  # are not updated when outputs are unchanged.

  ijar_bin, in_jar, out_jar = sys.argv[1:]

  with build_utils.AtomicOutput(out_jar) as f:

    # ijar fails on empty jars: https://github.com/bazelbuild/bazel/issues/10162

    if os.path.getsize(in_jar) <= _EMPTY_JAR_SIZE:

      with open(in_jar, 'rb') as in_f:

        f.write(in_f.read())

    else:

      build_utils.CheckOutput([ijar_bin, in_jar, f.name])

if __name__ == '__main__':

  main()