1#!/usr/bin/env python3 2# Copyright (C) 2020 The Android Open Source Project 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# http://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16# This script writes an empty file to disk at the specified path. The main use 17# of this is to allow noop targets to be written in GN which simply propogate 18# information to the GN description files without actually generating any data. 19 20import argparse 21import sys 22import os 23 24 25def touch(fname, times=None): 26 with open(fname, 'a'): 27 os.utime(fname, times) 28 29 30def main(): 31 parser = argparse.ArgumentParser() 32 parser.add_argument('--output') 33 args = parser.parse_args() 34 35 touch(args.output) 36 return 0 37 38 39if __name__ == '__main__': 40 sys.exit(main()) 41