[+] File name escaping

hypy_utils/file_utils.py

@@ -0,0 +1,37 @@
+import base64
+
+FILENAME_BLACKLIST = [
+    # Unix and Windows
+    "/",
+
+    # Windows only
+    "<", ">", ":", '"', "\\", "|", "?", "*", "\0",
+    "CON", "PRN", "AUX", "NUL",
+    "COM1", "COM2", "COM3", "COM4", "COM5", "COM6", "COM7", "COM8", "COM9",
+    "LPT1", "LPT2", "LPT3", "LPT4", "LPT5", "LPT6", "LPT7", "LPT8", "LPT9",
+
+    # Just for extra safety
+    "~"
+]
+
+FILENAME_REPLACE = {c: f"%{base64.b64encode(c.encode()).decode().replace('=', '')}" for c in FILENAME_BLACKLIST}
+
+
+def escape_filename(fn: str) -> str:
+    fn = fn.replace("%", "[ PeRcEnT EsCaPe owo ]")
+
+    for c, r in FILENAME_REPLACE.items():
+        fn = fn.replace(c, r)
+
+    fn = fn.replace("[ PeRcEnT EsCaPe owo ]", "%%")
+    return fn
+
+
+def unescape_filename(fn: str) -> str:
+    fn = fn.replace("%%", "[ PeRcEnT EsCaPe owo ]")
+
+    for c, r in FILENAME_REPLACE.items():
+        fn = fn.replace(r, c)
+
+    fn = fn.replace("[ PeRcEnT EsCaPe owo ]", "%")
+    return fn