pre-commit inside your favorite repos (original) (raw)

#!/usr/bin/env PYTHONIOENCODING=utf-8 python

# encoding: utf-8

"""Git pre-commit hook which lints Python, JavaScript, SASS and CSS"""

from __future__ import absolute_import, print_function, unicode_literals

import os

import subprocess

import sys

FS_ENCODING = sys.getfilesystemencoding()

def check_linter(cmd, files, **kwargs):

if not files:

return

print('Running %s' % cmd[0])

return subprocess.check_output(cmd + files, stderr=subprocess.STDOUT, **kwargs).decode(FS_ENCODING)

def filter_ext(extension, files, exclude=None):

files = [f for f in files if f.endswith(extension)]

if exclude is not None:

files = [i for i in files if exclude not in i]

return files

def lint_files(changed_files):

changed_files = [i.strip() for i in changed_files.splitlines() if '/external/' not in i]

changed_extensions = {ext for root, ext in map(os.path.splitext, changed_files)}

if '.py' in changed_extensions:

py_files = filter_ext('.py', changed_files)

check_linter(['frosted'], py_files)

check_linter(['isort', '-c'], py_files)

if '.js' in changed_extensions:

check_linter(['eslint'], filter_ext('.js', changed_files, exclude='.min.'))

if '.scss' in changed_extensions:

try:

check_linter(['scss-lint'], filter_ext('.scss', changed_files))

except subprocess.CalledProcessError as exc:

if exc.returncode == 1:

# scss-lint rc=1 means no message more severe than a warning

pass

else:

raise

if '.css' in changed_extensions:

check_linter(['csslint'], filter_ext('.css', changed_files, exclude='.min.'))

if __name__ == "__main__":

os.chdir(os.path.join(os.path.dirname(__file__), '..', '..'))

changed_files = subprocess.check_output('git diff --cached --name-only --diff-filter=ACM'.split())

changed_files = changed_files.decode(FS_ENCODING)

try:

lint_files(changed_files)

except subprocess.CalledProcessError as exc:

print('Quality check failed:', file=sys.stderr)

print(' '.join(exc.cmd), file=sys.stderr)

if exc.output:

output = exc.output.decode(FS_ENCODING)

print('\t', '\n\t'.join(output.splitlines()), sep='', file=sys.stderr)

sys.exit(1)