Grasscutter/format_whitespace.py
2022-12-13 14:01:27 +08:00

73 lines
2.6 KiB
Python

import re
import subprocess
UPSTREAM = 'https://github.com/Grasscutters/Grasscutter.git'
RATCHET = 'LintRatchet'
RATCHET_FALLBACK = 'c517b8a2c95473811eb07e12e73c4a69e59fbbdc'
re_leading_whitespace = re.compile(r'^[ \t]+', re.MULTILINE) # Replace with \1.replace('\t', ' ')
re_trailing_whitespace = re.compile(r'[ \t]+$', re.MULTILINE) # Replace with ''
# Replace 'for (foo){bar' with 'for (foo) {bar'
re_bracket_space = re.compile(r'\) *\{(?!\})') # Replace with ') {'
# Replace 'for(foo)' with 'foo (bar)'
re_keyword_space = re.compile(r'(?<=\b)(if|for|while|switch|try|else|catch|finally|synchronized) *(?=[\(\{])') # Replace with '\1 '
def get_changed_filelist():
# subprocess.run(['git', 'fetch', UPSTREAM, f'{RATCHET}:{RATCHET}']) # Ensure LintRatchet ref is matched to upstream
# result = subprocess.run(['git', 'diff', RATCHET, '--name-only'], capture_output=True, text=True)
# if result.returncode != 0:
# print(f'{RATCHET} not found, trying fallback {RATCHET_FALLBACK}')
print(f'Attempting to diff against {RATCHET_FALLBACK}')
result = subprocess.run(['git', 'diff', RATCHET_FALLBACK, '--name-only'], capture_output=True, text=True)
if result.returncode != 0:
# print('Fallback is also missing, aborting.')
print(f'Could not find {RATCHET_FALLBACK}, aborting.')
exit(1)
return result.stdout.strip().split('\n')
def format_string(data: str):
data = re_leading_whitespace.sub(lambda m: m.group(0).replace('\t', ' '), data)
data = re_trailing_whitespace.sub('', data)
data = re_bracket_space.sub(') {', data)
data = re_keyword_space.sub(r'\1 ', data)
if not data.endswith('\n'): # Enforce trailing \n
data = data + '\n'
return data
def format_file(filename: str) -> bool:
try:
with open(filename, 'r') as file:
data = file.read()
data = format_string(data)
with open(filename, 'w') as file:
file.write(data)
return True
except FileNotFoundError:
print(f'File not found, probably deleted: {filename}')
return False
def main():
filelist = [f for f in get_changed_filelist() if f.endswith('.java') and not f.startswith('src/generated')]
replaced = 0
not_found = 0
if not filelist:
print('No changed files due for formatting!')
return
print('Changed files due for formatting: ', filelist)
for file in filelist:
if format_file(file):
replaced += 1
else:
not_found += 1
print(f'Format complete! {replaced} formatted, {not_found} missing.')
if __name__ == '__main__':
main()