| Lei Zhang | ac975fb | 2021-04-21 03:51:06 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| Avi Drissman | dfd88085 | 2022-09-15 20:11:09 | [diff] [blame] | 2 | # Copyright 2021 The Chromium Authors |
| Lei Zhang | ac975fb | 2021-04-21 03:51:06 | [diff] [blame] | 3 | # Use of this source code is governed by a BSD-style license that can be |
| 4 | # found in the LICENSE file. |
| 5 | """Applies cpplint build/header_guard recommendations. |
| 6 | |
| 7 | Reads cpplint build/header_guard recommendations from stdin and applies them. |
| 8 | |
| 9 | Run cpplint for a single header: |
| 10 | cpplint.py --filter=-,+build/header_guard foo.h 2>&1 | grep build/header_guard |
| 11 | |
| 12 | Run cpplint for all headers in dir foo in parallel: |
| 13 | find foo -name '*.h' | \ |
| 14 | xargs parallel cpplint.py --filter=-,+build/header_guard -- 2>&1 | \ |
| 15 | grep build/header_guard |
| 16 | """ |
| 17 | |
| 18 | import sys |
| 19 | |
| 20 | IFNDEF_MSG = ' #ifndef header guard has wrong style, please use' |
| 21 | ENDIF_MSG_START = ' #endif line should be "' |
| 22 | ENDIF_MSG_END = '" [build/header_guard] [5]' |
| 23 | NO_GUARD_MSG = ' No #ifndef header guard found, suggested CPP variable is' |
| 24 | |
| 25 | |
| 26 | def process_cpplint_recommendations(cpplint_data): |
| Sumaid Syed | 7263132b | 2021-07-23 04:57:13 | [diff] [blame] | 27 | root = sys.argv[1] if len(sys.argv) > 1 else '' |
| 28 | root = "_".join(root.upper().strip(r'[/]+').split('/'))+"_" |
| Lei Zhang | ac975fb | 2021-04-21 03:51:06 | [diff] [blame] | 29 | for entry in cpplint_data: |
| 30 | entry = entry.split(':') |
| 31 | header = entry[0] |
| 32 | line = entry[1] |
| 33 | index = int(line) - 1 |
| 34 | msg = entry[2].rstrip() |
| 35 | if msg == IFNDEF_MSG: |
| 36 | assert len(entry) == 4 |
| 37 | |
| 38 | with open(header, 'rb') as f: |
| 39 | content = f.readlines() |
| 40 | |
| 41 | if not content[index + 1].startswith(b'#define '): |
| 42 | raise Exception('Missing #define: %s:%d' % (header, index + 2)) |
| 43 | |
| 44 | guard = entry[3].split(' ')[1] |
| Sumaid Syed | 7263132b | 2021-07-23 04:57:13 | [diff] [blame] | 45 | guard = guard.replace(root, '') if len(root) > 1 else guard |
| Lei Zhang | ac975fb | 2021-04-21 03:51:06 | [diff] [blame] | 46 | content[index] = ('#ifndef %s\n' % guard).encode('utf-8') |
| 47 | # Since cpplint does not print messages for the #define line, just |
| 48 | # blindly overwrite the #define that was here. |
| 49 | content[index + 1] = ('#define %s\n' % guard).encode('utf-8') |
| 50 | elif msg.startswith(ENDIF_MSG_START): |
| 51 | assert len(entry) == 3 |
| 52 | assert msg.endswith(ENDIF_MSG_END) |
| 53 | |
| 54 | with open(header, 'rb') as f: |
| 55 | content = f.readlines() |
| 56 | endif = msg[len(ENDIF_MSG_START):-len(ENDIF_MSG_END)] |
| Sumaid Syed | 7263132b | 2021-07-23 04:57:13 | [diff] [blame] | 57 | endif = endif.replace(root, '') if len(root) > 1 else endif |
| Lei Zhang | ac975fb | 2021-04-21 03:51:06 | [diff] [blame] | 58 | content[index] = ('%s\n' % endif).encode('utf-8') |
| 59 | elif msg == NO_GUARD_MSG: |
| 60 | assert index == -1 |
| 61 | continue |
| 62 | else: |
| 63 | raise Exception('Unknown cpplint message: %s for %s:%s' % |
| 64 | (msg, header, line)) |
| 65 | |
| 66 | with open(header, 'wb') as f: |
| 67 | f.writelines(content) |
| 68 | |
| 69 | |
| 70 | if __name__ == '__main__': |
| 71 | process_cpplint_recommendations(sys.stdin) |