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1 #!/usr/bin/env python | |
2 # Copyright 2016 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 """Find header files missing in GN. | |
7 | |
8 This script gets all the header files from ninja_deps, which is from the true | |
9 dependency generated by the compiler, and report if they don't exist in GN. | |
10 """ | |
11 | |
12 import argparse | |
13 import json | |
14 import os | |
15 import subprocess | |
16 import sys | |
17 | |
18 | |
19 def get_d_headers(out_dir): | |
20 """Return all the header files from ninja_deps""" | |
21 ninja_out = subprocess.check_output(['ninja', '-C', out_dir, '-t', 'deps']) | |
wychen
2016/12/28 15:33:50
Note to self:
Might need universal_newlines=True i
| |
22 return extract_d_headers(ninja_out) | |
23 | |
24 | |
25 def extract_d_headers(ninja_out): | |
26 """Extract header files from ninja output""" | |
27 all_headers = set() | |
28 | |
29 prefix = '..' + os.sep + '..' + os.sep | |
30 | |
31 is_valid = False | |
32 for line in ninja_out.split('\n'): | |
33 if line.startswith(' '): | |
34 if not is_valid: | |
35 continue | |
36 if line.endswith('.h') or line.endswith('.hh'): | |
37 f = line.strip() | |
38 if f.startswith(prefix): | |
39 f = f[6:] # Remove the '../../' prefix | |
40 # build/ only contains build-specific files like build_config.h | |
41 # and buildflag.h, and system header files, so they should be | |
42 # skipped. | |
43 if not f.startswith('build'): | |
44 all_headers.add(f) | |
45 else: | |
46 is_valid = line.endswith('(VALID)') | |
47 | |
48 return all_headers | |
49 | |
50 | |
51 def get_gn_headers(out_dir): | |
52 """Return all the header files from GN""" | |
53 subprocess.check_call(['gn', 'gen', out_dir, '--ide=json', '-q']) | |
54 gn_json = json.load(open(os.path.join(out_dir, 'project.json'))) | |
55 return extract_gn_headers(gn_json) | |
56 | |
57 | |
58 def extract_gn_headers(gn): | |
59 """Extract header files from GN output""" | |
60 all_headers = set() | |
61 | |
62 for target, properties in gn['targets'].iteritems(): | |
63 for f in properties.get('sources', []): | |
64 if f.endswith('.h') or f.endswith('.hh'): | |
65 if f.startswith('//'): | |
66 f = f[2:] # Strip the '//' prefix. | |
67 all_headers.add(f) | |
68 | |
69 return all_headers | |
70 | |
71 | |
72 def main(): | |
73 parser = argparse.ArgumentParser() | |
74 parser.add_argument('--out-dir', default='out/Release') | |
75 parser.add_argument('--json') | |
76 parser.add_argument('--whitelist') | |
77 parser.add_argument('args', nargs=argparse.REMAINDER) | |
78 | |
79 args, extras = parser.parse_known_args() | |
80 | |
81 d = get_d_headers(args.out_dir) | |
82 gn = get_gn_headers(args.out_dir) | |
83 missing = d - gn | |
84 | |
85 if args.whitelist: | |
86 whitelist = set(open(args.whitelist).read().split('\n')) | |
87 missing -= whitelist | |
88 | |
89 missing = sorted(missing) | |
90 | |
91 if args.json: | |
92 with open(args.json, 'w') as f: | |
93 json.dump(missing, f) | |
94 | |
95 if len(missing) == 0: | |
96 return 0 | |
97 | |
98 print 'The following files should be included in gn files:' | |
99 for i in missing: | |
100 print i | |
101 return 1 | |
102 | |
103 if __name__ == '__main__': | |
104 sys.exit(main()) | |
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