[Python][Git] php-cs-fixer Git pre-commit hook

pre-commit.py

#!/usr/bin/env python
#
# by @Nattfarinn, improved by @alongosz
# Requires php-cs-fixer executable
# Place it in your repository, in .git/hooks/pre-commit

import sys
import subprocess

process = subprocess.Popen(['git', 'diff', '--cached', '--name-only', '--diff-filter=ACMRT'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
output, errors = process.communicate()

paths = output.decode("utf-8").rstrip("\n").split("\n")
need_fix = []

for path in paths:
    if path.endswith(".php"):
        process = subprocess.Popen(['php-cs-fixer', 'fix', '--diff', '--no-interaction', '--dry-run', path], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        output, errors = process.communicate()

        if process.returncode:
            print(output.decode("utf-8"))
            need_fix.append(path)

if len(need_fix):
    print("These files do not follow the PHP Coding Standards:")
    for path in need_fix:
        print(" * ", path)
    print()
    print("Fix them before commiting.")
    exit(1)

exit(0)