updates

Backend/venv/lib/python3.12/site-packages/authlib/common/encoding.py

@@ -0,0 +1,66 @@
+import base64
+import json
+import struct
+
+
+def to_bytes(x, charset="utf-8", errors="strict"):
+    if x is None:
+        return None
+    if isinstance(x, bytes):
+        return x
+    if isinstance(x, str):
+        return x.encode(charset, errors)
+    if isinstance(x, (int, float)):
+        return str(x).encode(charset, errors)
+    return bytes(x)
+
+
+def to_unicode(x, charset="utf-8", errors="strict"):
+    if x is None or isinstance(x, str):
+        return x
+    if isinstance(x, bytes):
+        return x.decode(charset, errors)
+    return str(x)
+
+
+def to_native(x, encoding="ascii"):
+    if isinstance(x, str):
+        return x
+    return x.decode(encoding)
+
+
+def json_loads(s):
+    return json.loads(s)
+
+
+def json_dumps(data, ensure_ascii=False):
+    return json.dumps(data, ensure_ascii=ensure_ascii, separators=(",", ":"))
+
+
+def urlsafe_b64decode(s):
+    s += b"=" * (-len(s) % 4)
+    return base64.urlsafe_b64decode(s)
+
+
+def urlsafe_b64encode(s):
+    return base64.urlsafe_b64encode(s).rstrip(b"=")
+
+
+def base64_to_int(s):
+    data = urlsafe_b64decode(to_bytes(s, charset="ascii"))
+    buf = struct.unpack(f"{len(data)}B", data)
+    return int("".join([f"{byte:02x}" for byte in buf]), 16)
+
+
+def int_to_base64(num):
+    if num < 0:
+        raise ValueError("Must be a positive integer")
+
+    s = num.to_bytes((num.bit_length() + 7) // 8, "big", signed=False)
+    return to_unicode(urlsafe_b64encode(s))
+
+
+def json_b64encode(text):
+    if isinstance(text, dict):
+        text = json_dumps(text)
+    return urlsafe_b64encode(to_bytes(text))