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1#!/usr/bin/env python
2
3# Copyright 2017 Google Inc.
4#
5# Use of this source code is governed by a BSD-style license that can be
6# found in the LICENSE file.
7
8import fnmatch
9import multiprocessing
10import os
11import subprocess
12import sys
13
14'''
15If called with arguments, this script will verify that those headers are
16self-sufficient and idempotent.
17
18Otherwise, test all checked-in headers except for those in the ignore list.
19'''
20
21public_header_args = [
22    '-Iinclude/core',
23    '-Iinclude/config',
24    '-Iinclude/android',
25    '-Iinclude/codec',
26    '-Iinclude/effects',
27    '-Iinclude/gpu',
28    '-Iinclude/gpu/gl',
29    '-Iinclude/pathops',
30    '-Iinclude/ports',
31    '-Iinclude/private',
32    '-Iinclude/svg',
33    '-Iinclude/third_party/vulkan',
34    '-Iinclude/utils',
35    '-Iinclude/utils/mac',
36    '-Iinclude/views',
37]
38
39all_header_args = [
40    '-Iinclude/core',
41    '-Iinclude/config',
42    '-Iinclude/android',
43    '-Iinclude/c',
44    '-Iinclude/codec',
45    '-Iinclude/effects',
46    '-Iinclude/gpu',
47    '-Iinclude/gpu/gl',
48    '-Iinclude/pathops',
49    '-Iinclude/ports',
50    '-Iinclude/private',
51    '-Iinclude/svg',
52    '-Iinclude/third_party/vulkan',
53    '-Iinclude/utils',
54    '-Iinclude/utils/mac',
55    '-Iinclude/views',
56    '-Isrc/codec',
57    '-Isrc/core',
58    '-Isrc/effects',
59    '-Isrc/effects/gradients',
60    '-Isrc/fonts',
61    '-Isrc/gpu',
62    '-Isrc/image',
63    '-Isrc/images',
64    '-Isrc/lazy',
65    '-Isrc/opts',
66    '-Isrc/pathops',
67    '-Isrc/ports',
68    '-Isrc/sfnt',
69    '-Isrc/shaders',
70    '-Isrc/sksl',
71    '-Isrc/utils',
72    '-Isrc/utils/win',
73    '-Isrc/xml',
74    '-Igm',
75    '-Itests',
76    '-Itools',
77    '-Itools/debugger',
78    '-Itools/flags',
79    '-Itools/gpu',
80    '-Itools/timer',
81    '-Ithird_party/etc1',
82    '-Ithird_party/externals/libjpeg-turbo',
83    '-Ithird_party/externals/sfntly/cpp/src',
84    '-Ithird_party/externals/zlib',
85    '-Ithird_party/gif',
86]
87
88ignore = [
89    '*/lex.*.h',
90    '*/osmesa_wrapper.h',
91    'debugger/QT/*',
92    'example/*',
93    'experimental/*',
94    'include/config/*',
95    'include/core/SkPostConfig.h',
96    'include/gpu/vk/*',
97    'include/ports/SkFontMgr_android.h',
98    'include/ports/SkFontMgr_fontconfig.h',
99    'include/ports/SkTypeface_win.h',
100    'include/private/*_impl.h',
101    'include/utils/mac/SkCGUtils.h',
102    'include/views/SkOSWindow_*.h',
103    'src/c/sk_c_from_to.h',
104    'src/core/*Template.h',
105    'src/core/SkBitmapProcState_*.h',
106    'src/core/SkLinearBitmapPipeline.h',
107    'src/core/SkLinearBitmapPipeline_*.h',
108    'src/gpu/vk/*',
109    'src/opts/*_SSE2.h',
110    'src/opts/*_SSSE3.h',
111    'src/opts/*_neon.h',
112    'src/opts/*_sse.h',
113    'src/opts/Sk4px_*.h',
114    'src/ports/*',
115    'src/utils/*_win.h',
116    'src/utils/win/*',
117    'src/views/*',
118    'third_party/*',
119    'tools/fiddle/*',
120    'tools/viewer/*',
121]
122
123# test header for self-sufficiency and idempotency.
124# Returns a string containing errors, or None iff there are no errors.
125def compile_header(header):
126    args = ([]                 if fnmatch.fnmatch(header, 'include/c/*') else
127            public_header_args if fnmatch.fnmatch(header, 'include/*')   else
128            all_header_args)
129    cmd = ['c++', '--std=c++14'] + args + [ '-o', '/dev/null', '-c', '-x', 'c++', '-']
130    proc = subprocess.Popen(cmd, stdin=subprocess.PIPE,
131                            stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
132    proc.stdin.write('#include "%s"\n#include "%s"\n' % (header, header))
133    proc.stdin.close()
134    errors = proc.stdout.read().strip()
135    if proc.wait() != 0 or len(errors) > 0:
136        return '\n\033[7m ERROR: %s \033[0m\n%s\n\n' % (header, errors)
137    return None
138
139#     for h in headers:
140#         compile_header(h)
141# ...Except use a multiprocessing pool.
142# Exit at first error.
143def compile_headers(headers):
144    class N: good = True
145    # N.good is a global scoped to this function to make a print_and_exit_if() a closure
146    pool = multiprocessing.Pool()
147    def print_and_exit_if(r):
148        if r is not None:
149            sys.stdout.write(r)
150            N.good = False
151            pool.terminate()
152    for path in headers:
153        assert os.path.exists(path)
154        pool.apply_async(compile_header, args=(path, ), callback=print_and_exit_if)
155    pool.close()
156    pool.join()
157    if N.good:
158        sys.stdout.write('all good :)\n')
159    else:
160        exit(1)
161
162
163def main(argv):
164    skia_dir = os.path.join(os.path.dirname(__file__), os.pardir)
165    if len(argv) > 1:
166        paths = [os.path.relpath(os.path.abspath(arg), skia_dir) for arg in argv[1:]]
167        os.chdir(skia_dir)
168    else:
169        os.chdir(skia_dir)
170        paths = [path for path in subprocess.check_output(['git', 'ls-files']).splitlines()
171                 if path.endswith('.h')
172                 and not any(fnmatch.fnmatch(path, pattern) for pattern in ignore)]
173    compile_headers(paths)
174
175
176if __name__ == '__main__':
177    main(sys.argv)
178
179