| # 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. |
| |
| from __future__ import print_function |
| |
| import os |
| import sys |
| |
| """Shared functions for use in tzdata scripts.""" |
| |
| def GetIanaTarFile(dir_name, file_prefix): |
| matching_files = [] |
| for filename in os.listdir(dir_name): |
| if filename.startswith(file_prefix) and filename.endswith('.tar.gz'): |
| matching_files.append(filename); |
| |
| if len(matching_files) == 0: |
| return None |
| elif len(matching_files) == 1: |
| return '%s/%s' % (dir_name, matching_files[0]) |
| else: |
| print('Multiple %s files found unexpectedly %s' % (file_prefix, matching_files)) |
| sys.exit(1) |
| |
