Move file functions

g4f/files.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+import re
+from urllib.parse import unquote
+import os
+
+from .cookies import get_cookies_dir
+
+def secure_filename(filename: str) -> str:
+    if filename is None:
+        return None
+    # Keep letters, numbers, basic punctuation and all Unicode chars
+    filename = re.sub(
+        r'[^\w.,_+-]+',
+        '_',
+        unquote(filename).strip(),
+        flags=re.UNICODE
+    )
+    encoding = 'utf-8'
+    max_length = 100
+    encoded = filename.encode(encoding)[:max_length]
+    decoded = encoded.decode(encoding, 'ignore')
+    return decoded.strip(".,_+-")
+
+def get_bucket_dir(*parts):
+    return os.path.join(get_cookies_dir(), "buckets", *[secure_filename(part) for part in parts if part])