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1 #!/usr/bin/env python | |
2 # Copyright (c) 2013 The Chromium Authors. All rights reserved. | |
3 # Use of this source code is governed by a BSD-style license that can be | |
4 # found in the LICENSE file. | |
5 """Make a symlink and optionally touch a file (to handle dependencies).""" | |
6 import errno | |
7 import optparse | |
8 import os.path | |
9 import shutil | |
10 import sys | |
11 def Main(argv): | |
12 parser = optparse.OptionParser() | |
13 parser.add_option('-f', '--force', action='store_true') | |
14 parser.add_option('--touch') | |
15 options, args = parser.parse_args(argv[1:]) | |
16 if len(args) < 2: | |
17 parser.error('at least two arguments required.') | |
18 target = args[-1] | |
19 sources = args[:-1] | |
20 for s in sources: | |
21 t = os.path.join(target, os.path.basename(s)) | |
22 if len(sources) == 1 and not os.path.isdir(target): | |
23 t = target | |
24 try: | |
25 os.symlink(s, t) | |
26 except OSError, e: | |
27 if e.errno == errno.EEXIST and options.force: | |
28 if os.path.isdir(t): | |
29 shutil.rmtree(t, ignore_errors=True) | |
30 else: | |
31 os.remove(t) | |
32 os.symlink(s, t) | |
33 else: | |
34 raise | |
35 if options.touch: | |
36 with open(options.touch, 'w') as f: | |
37 pass | |
38 if __name__ == '__main__': | |
39 sys.exit(Main(sys.argv)) | |
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