| # Copyright 2017 The Android Open Source Project |
| # |
| # 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. |
| |
| """Utility methods to work with Zip archives.""" |
| |
| try: |
| import itertools.izip as zip |
| except ImportError: |
| pass |
| |
| from operator import attrgetter |
| from zipfile import ZipFile |
| import os |
| |
| |
| def ZipCompare(path_a, path_b): |
| """Compares the contents of two Zip archives, returns True if equal.""" |
| |
| if not os.path.isfile(path_a) or not os.path.isfile(path_b): |
| return False |
| |
| with ZipFile(path_a, 'r') as zip_a: |
| info_a = zip_a.infolist() |
| |
| with ZipFile(path_b, 'r') as zip_b: |
| info_b = zip_b.infolist() |
| |
| if len(info_a) != len(info_b): |
| return False |
| |
| info_a.sort(key=attrgetter('filename')) |
| info_b.sort(key=attrgetter('filename')) |
| |
| return all( |
| a.filename == b.filename and |
| a.file_size == b.file_size and |
| a.CRC == b.CRC |
| for a, b in zip(info_a, info_b)) |