| #!/usr/bin/env python |
| # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """Make a symlink and optionally touch a file (to handle dependencies). |
| |
| Usage: |
| symlink.py [options] sources... target |
| |
| A sym link to source is created at target. If multiple sources are specfied, |
| then target is assumed to be a directory, and will contain all the links to |
| the sources (basenames identical to their source). |
| """ |
| |
| import errno |
| import optparse |
| import os.path |
| import shutil |
| import sys |
| |
| |
| def Main(argv): |
| parser = optparse.OptionParser() |
| parser.add_option('-f', '--force', action='store_true') |
| parser.add_option('--touch') |
| |
| options, args = parser.parse_args(argv[1:]) |
| if len(args) < 2: |
| parser.error('at least two arguments required.') |
| |
| target = args[-1] |
| sources = args[:-1] |
| for s in sources: |
| t = os.path.join(target, os.path.basename(s)) |
| if len(sources) == 1 and not os.path.isdir(target): |
| t = target |
| t = os.path.expanduser(t) |
| if os.path.realpath(t) == s: |
| continue |
| try: |
| os.symlink(s, t) |
| except OSError, e: |
| if e.errno == errno.EEXIST and options.force: |
| if os.path.isdir(t): |
| shutil.rmtree(t, ignore_errors=True) |
| else: |
| os.remove(t) |
| os.symlink(s, t) |
| else: |
| raise |
| |
| |
| if options.touch: |
| with open(options.touch, 'w') as f: |
| pass |
| |
| |
| if __name__ == '__main__': |
| sys.exit(Main(sys.argv)) |