1# Copyright 2017 The Android Open Source Project 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15from __future__ import print_function 16 17import os 18import sys 19 20"""Shared functions for use in tzdata scripts.""" 21 22def GetIanaTarFile(dir_name, file_type): 23 matching_files = [] 24 for filename in os.listdir(dir_name): 25 if filename.startswith('tz%s20' % file_type) and filename.endswith('.tar.gz'): 26 matching_files.append(filename); 27 28 if len(matching_files) == 0: 29 return None 30 elif len(matching_files) == 1: 31 return '%s/%s' % (dir_name, matching_files[0]) 32 else: 33 print('Multiple tz%s files found unexpectedly %s' % (file_type, matching_files)) 34 sys.exit(1) 35 36