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1#!/usr/bin/env python
2
3# Copyright 2017 gRPC authors.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17import os
18import sys
19
20os.chdir(os.path.join(os.path.dirname(sys.argv[0]), '../../..'))
21
22
23def check_port_platform_inclusion(directory_root):
24    bad_files = []
25    for root, dirs, files in os.walk(directory_root):
26        for filename in files:
27            path = os.path.join(root, filename)
28            if os.path.splitext(path)[1] not in ['.c', '.cc', '.h']: continue
29            if path in [
30                    os.path.join('include', 'grpc', 'support',
31                                 'port_platform.h'),
32                    os.path.join('include', 'grpc', 'impl', 'codegen',
33                                 'port_platform.h'),
34            ]:
35                continue
36            if filename.endswith('.pb.h') or filename.endswith('.pb.c'):
37                continue
38            with open(path) as f:
39                all_lines_in_file = f.readlines()
40                for index, l in enumerate(all_lines_in_file):
41                    if '#include' in l:
42                        if l not in [
43                                '#include <grpc/support/port_platform.h>\n',
44                                '#include <grpc/impl/codegen/port_platform.h>\n'
45                        ]:
46                            bad_files.append(path)
47                        elif all_lines_in_file[index + 1] != '\n':
48                            # Require a blank line after including port_platform.h in
49                            # order to prevent the formatter from reording it's
50                            # inclusion order upon future changes.
51                            bad_files.append(path)
52                        break
53    return bad_files
54
55
56all_bad_files = []
57all_bad_files += check_port_platform_inclusion(os.path.join('src', 'core'))
58all_bad_files += check_port_platform_inclusion(os.path.join('include', 'grpc'))
59
60if len(all_bad_files) > 0:
61    for f in all_bad_files:
62        print(('port_platform.h is not the first included header or there '
63               'is not a blank line following its inclusion in %s') % f)
64    sys.exit(1)
65