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1 #!/usr/bin/env python | |
2 # Copyright (c) 2012 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 | |
6 """ | |
7 Generates shim headers that mirror the directory structure of bundled headers, | |
8 but just forward to the system ones. | |
9 | |
10 This allows seamless compilation against system headers with no changes | |
11 to our source code. | |
12 """ | |
13 | |
14 | |
15 import optparse | |
16 import os.path | |
17 import sys | |
18 | |
19 | |
20 SHIM_TEMPLATE = """ | |
21 #if defined(OFFICIAL_BUILD) | |
22 #error shim headers must not be used in official builds! | |
23 #endif | |
24 | |
25 #include <%s> | |
26 """ | |
27 | |
28 | |
29 def GeneratorMain(argv): | |
30 parser = optparse.OptionParser() | |
31 parser.add_option('--headers-root') | |
32 parser.add_option('--output-directory') | |
33 parser.add_option('--outputs', action='store_true') | |
34 parser.add_option('--generate', action='store_true') | |
35 | |
36 options, args = parser.parse_args(argv) | |
Mark Mentovai
2012/12/17 23:23:24
I still think an assert on len(args) >= 1 is a goo
Paweł Hajdan Jr.
2012/12/17 23:35:48
Done.
| |
37 | |
38 if not options.headers_root: | |
39 parser.error('Missing --headers-root parameter.') | |
40 if not options.output_directory: | |
41 parser.error('Missing --output-directory parameter.') | |
42 | |
43 source_tree_root = os.path.abspath( | |
44 os.path.join(os.path.dirname(__file__), '..', '..')) | |
45 | |
46 target_directory = os.path.join( | |
47 options.output_directory, | |
48 os.path.relpath(options.headers_root, source_tree_root)) | |
49 if options.generate and not os.path.exists(target_directory): | |
50 os.makedirs(target_directory) | |
51 for header_filename in args: | |
52 if options.outputs: | |
53 yield os.path.join(target_directory, header_filename) | |
54 if options.generate: | |
55 with open(os.path.join(target_directory, header_filename), 'w') as f: | |
56 f.write(SHIM_TEMPLATE % header_filename) | |
57 | |
58 | |
59 def DoMain(argv): | |
60 return '\n'.join(GeneratorMain(argv)) | |
61 | |
62 | |
63 if __name__ == '__main__': | |
64 DoMain(sys.argv[1:]) | |
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