| # Copyright 2018 The Bazel Authors. 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. |
| import argparse |
| import os |
| import zipfile |
| |
| |
| def _is_jar(jar): |
| if not os.path.exists(jar): |
| raise argparse.ArgumentTypeError("jar:{0} does not exist".format(jar)) |
| else: |
| return zipfile.ZipFile(jar) |
| |
| |
| def _extract_root_entry(jar, entry_path, touch=False): |
| """ |
| Extracts a root entry from a jar. and write it to a path. |
| |
| entry_path is absolute and the basename is used to extract the entry from the jar. |
| |
| :param jar: The jar from which to make the extraction. |
| :param entry_path: An absolute file path to where the entry should be written. |
| :param touch: Should the file be touched if it was not found in the jar. |
| """ |
| basename = os.path.basename(entry_path) |
| try: |
| jar.read(basename) |
| except Exception as ex: |
| if touch: |
| f = open(entry_path, 'a') |
| f.close() |
| return |
| else: |
| raise ex |
| jar.extract(basename, path=os.path.dirname(entry_path)) |
| |
| |
| def _main(p): |
| args = p.parse_args() |
| _extract_root_entry(args.jar, args.out) |
| for e in args.aux: |
| _extract_root_entry(args.jar, e, touch=True) |
| |
| |
| parser = argparse.ArgumentParser() |
| |
| parser.add_argument("--jar", type=_is_jar, required=True) |
| parser.add_argument("--out", required=True, help="mandatory paths to files that should be extracted from the root") |
| parser.add_argument( |
| "--aux", nargs="*", |
| help="""paths to files that should be extracted from the root, if the files do not exist they are touched.""") |
| |
| _main(parser) |