| #!/usr/bin/env python3.8 |
| # Copyright 2020 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| description = """ |
| Copies a file, and then makes a symlink to the copy. |
| """ |
| usage = "%prog source copy_to link_to" |
| epilog = """ |
| A normal copy (not a hardlink) is made from source -> copy_to. |
| A soft link is made from copy_to -> link_to, assuming that they're |
| in the same directory. |
| |
| This script will not work on Windows. |
| """ |
| |
| import errno |
| import optparse |
| import os.path |
| import shutil |
| import subprocess |
| import sys |
| |
| |
| def Main(argv): |
| parser = optparse.OptionParser(usage=usage, description=description, |
| epilog=epilog) |
| options, args = parser.parse_args(argv[1:]) |
| if len(args) != 3: |
| parser.error('exactly 3 arguments required') |
| |
| if os.name == 'nt': |
| print('Windows not supported.', file=sys.stderr) |
| return 1 |
| |
| source, copy_to, link_to = args |
| |
| if os.path.dirname(copy_to) != os.path.dirname(link_to): |
| print('copy_to and link_to expected to be in the same directory.', |
| file=sys.stderr) |
| return 1 |
| |
| shutil.copyfile(source, copy_to) |
| if os.path.isfile(link_to): |
| os.remove(link_to) |
| os.symlink(os.path.split(copy_to)[1], link_to) |
| return 0 |
| |
| if __name__ == '__main__': |
| sys.exit(Main(sys.argv)) |
