#!/usr/bin/env python3 # Copyright 2023 Google Inc. All rights reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. from __future__ import print_function import argparse import py_compile import os import sys import shutil import tempfile import zipfile # This file needs to support both python 2 and 3. def process_one_file(name, infile, outzip): # Create a ZipInfo instance with a fixed date to ensure a deterministic output. # Date was chosen to be the same as # https://cs.android.com/android/platform/superproject/main/+/main:build/soong/jar/jar.go;l=36;drc=2863e4535eb65e15f955dc8ed48fa99b1d2a1db5 info = zipfile.ZipInfo(filename=name, date_time=(2008, 1, 1, 0, 0, 0)) info.compress_type = zipfile.ZIP_DEFLATED if not info.filename.endswith('.py'): outzip.writestr(info, infile.read()) return # Unfortunately py_compile requires the input/output files to be written # out to disk. with tempfile.NamedTemporaryFile(prefix="Soong_precompile_", delete=False) as tmp: shutil.copyfileobj(infile, tmp) in_name = tmp.name with tempfile.NamedTemporaryFile(prefix="Soong_precompile_", delete=False) as tmp: out_name = tmp.name try: # Ensure a deterministic .pyc output by using the hash rather than the timestamp. # Only works on Python 3.7+ # See https://docs.python.org/3/library/py_compile.html#py_compile.PycInvalidationMode if sys.version_info >= (3, 7): py_compile.compile(in_name, out_name, info.filename, doraise=True, invalidation_mode=py_compile.PycInvalidationMode.CHECKED_HASH) else: py_compile.compile(in_name, out_name, info.filename, doraise=True) with open(out_name, 'rb') as f: info.filename = info.filename + 'c' outzip.writestr(info, f.read()) finally: os.remove(in_name) os.remove(out_name) def main(): parser = argparse.ArgumentParser() parser.add_argument('src_zip') parser.add_argument('dst_zip') args = parser.parse_args() errors = [] with open(args.dst_zip, 'wb') as outf, open(args.src_zip, 'rb') as inf: with zipfile.ZipFile(outf, mode='w') as outzip, zipfile.ZipFile(inf, mode='r') as inzip: for name in inzip.namelist(): with inzip.open(name, mode='r') as inzipf: try: process_one_file(name, inzipf, outzip) except py_compile.PyCompileError as e: errors.append(e) if errors: for i, error in enumerate(errors): # Print an empty line in between each error if i > 0: print(file=sys.stderr) print(str(error).strip(), file=sys.stderr) sys.exit(1) if __name__ == "__main__": main()