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Meta: Only check changed files in check-style.py during pre-commit

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This speeds up the script from about 90ms down to about 10ms, for
reasonably common changesets.

80ms may not feel like much, but it adds up quickly, especially since
we run a dozen scripts during pre-commit.
This commit is contained in:
Ben Wiederhake 2022-09-18 20:10:57 +02:00 committed by Brian Gianforcaro
parent 532786848b
commit f8a42ef0b3
Notes: sideshowbarker 2024-07-17 06:51:00 +09:00 
Author: https://github.com/BenWiederhake
Commit: https://github.com/SerenityOS/serenity/commit/f8a42ef0b3
Pull-request: https://github.com/SerenityOS/serenity/pull/15281
Reviewed-by: https://github.com/bgianfo ✅
1 changed files with 20 additions and 5 deletions
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25
Meta/check-style.py
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@ -37,18 +37,33 @@ PRAGMA_ONCE_CHECK_EXCLUDES = {
# We make sure that there's a blank line before and after pragma once
GOOD_PRAGMA_ONCE_PATTERN = re.compile('(^|\\S\n\n)#pragma once(\n\n\\S.|$)')
GIT_LS_FILES = ['git', 'ls-files', '--', '*.cpp', '*.h', ':!:Base', ':!:Kernel/FileSystem/ext2_fs.h']
def should_check_file(filename):
if not filename.endswith('.cpp') and not filename.endswith('.h'):
return False
if filename.startswith('Base/'):
return False
if filename == 'Kernel/FileSystem/ext2_fs.h':
return False
return True
def find_files_here_or_argv():
if len(sys.argv) > 1:
raw_list = sys.argv[1:]
else:
process = subprocess.run(["git", "ls-files"], check=True, capture_output=True)
raw_list = process.stdout.decode().strip('\n').split('\n')
return filter(should_check_file, raw_list)
def run():
files = subprocess.run(GIT_LS_FILES, check=True, capture_output=True).stdout.decode().strip('\n').split('\n')
assert len(files) > 1000
errors_license = []
errors_pragma_once_bad = []
errors_pragma_once_missing = []
for filename in files:
for filename in find_files_here_or_argv():
with open(filename, "r") as f:
file_content = f.read()
if not any(filename.startswith(forbidden_prefix) for forbidden_prefix in LICENSE_HEADER_CHECK_EXCLUDES):