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 15import os 16import sys 17 18"""Shared functions for use in tzdata scripts.""" 19 20def GetIanaTarFile(dir_name, file_type): 21 matching_files = [] 22 for filename in os.listdir(dir_name): 23 if filename.startswith('tz%s20' % file_type) and filename.endswith('.tar.gz'): 24 matching_files.append(filename); 25 26 if len(matching_files) == 0: 27 return None 28 elif len(matching_files) == 1: 29 return '%s/%s' % (dir_name, matching_files[0]) 30 else: 31 print 'Multiple tz%s files found unexpectedly %s' % (file_type, matching_files) 32 sys.exit(1) 33 34