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blacklist.py
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blacklist.py
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import re
from pathlib import Path
def _blacklist_normalize_username(username: str) -> str:
return re.sub(r'[^a-z0-9]', '', username.lower())
class Blacklist:
_blacklist: set[str]
def __init__(self, path_or_text: Path | str) -> None:
if isinstance(path_or_text, str):
text = path_or_text
else:
with open(path_or_text) as f:
text = f.read()
text = re.sub(r'[\t\r]', '', text)
self._blacklist = set(
_blacklist_normalize_username(t.strip())
for t in text.splitlines()
if t.strip()
and t.strip()[0] != '#'
)
print(f'[BLACKLIST] Loaded {len(self._blacklist)} entries')
def is_blacklisted(self, username: str) -> bool:
return _blacklist_normalize_username(username) in self._blacklist