5c503d1c43
This signifigantly improves the startup time of soong-built python binaries. For example, running `m apexer && time out/host/linux-x86/bin/apexer` gives 0.734s before this cl, and 0.094s after. Fixes: 259718110 Test: Presubmits Change-Id: Ib19e83e2c60c39a849525be117279c318de3afa7
61 lines
2 KiB
Python
61 lines
2 KiB
Python
#!/usr/bin/env python3
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# Copyright 2023 Google Inc. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import argparse
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import py_compile
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import os
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import shutil
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import tempfile
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import zipfile
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# This file needs to support both python 2 and 3.
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def process_one_file(name, inf, outzip):
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if not name.endswith('.py'):
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outzip.writestr(name, inf.read())
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return
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# Unfortunately py_compile requires the input/output files to be written
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# out to disk.
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with tempfile.NamedTemporaryFile(prefix="Soong_precompile_", delete=False) as tmp:
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shutil.copyfileobj(inf, tmp)
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in_name = tmp.name
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with tempfile.NamedTemporaryFile(prefix="Soong_precompile_", delete=False) as tmp:
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out_name = tmp.name
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try:
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py_compile.compile(in_name, out_name, name, doraise=True)
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with open(out_name, 'rb') as f:
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outzip.writestr(name + 'c', f.read())
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finally:
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os.remove(in_name)
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os.remove(out_name)
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('src_zip')
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parser.add_argument('dst_zip')
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args = parser.parse_args()
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with open(args.dst_zip, 'wb') as outf, open(args.src_zip, 'rb') as inf:
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with zipfile.ZipFile(outf, mode='w') as outzip, zipfile.ZipFile(inf, mode='r') as inzip:
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for name in inzip.namelist():
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with inzip.open(name, mode='r') as inzipf:
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process_one_file(name, inzipf, outzip)
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if __name__ == "__main__":
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main()
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