improve cb32 handling

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.4.0
+
+👀
+
+## 0.3.5
+
+- Fixed cb32 handling. Now leading zeros in SIQ's are stripped, and `.from_cb32()` was implemented.
+
 ## 0.3.4
 
 - Bug fixes in `.flask_restx` regarding error handling

src/suou/__init__.py

@@ -27,7 +27,7 @@ from .itertools import makelist, kwargs_prefix, ltuple, rtuple, additem
 from .i18n import I18n, JsonI18n, TomlI18n
 from .snowflake import Snowflake, SnowflakeGen
 
-__version__ = "0.3.4"
+__version__ = "0.3.5"
 
 __all__ = (
     'Siq', 'SiqCache', 'SiqType', 'SiqGen', 'StringCase',

src/suou/flask_sqlalchemy.py

@@ -40,7 +40,7 @@ class FlaskAuthSrc(AuthSrc):
     def get_signature(self) -> bytes:
         sig = request.headers.get('authorization-signature', None)
         return want_bytes(sig) if sig else None
-    def invalid_exc(self, msg: str = 'validation failed') -> Never:
+    def invalid_exc(self, msg: str = 'Validation failed') -> Never:
         abort(400, msg)
     def required_exc(self):
         abort(401, 'Login required')

src/suou/iding.py

@@ -41,7 +41,7 @@ from typing import Iterable, override
 import warnings
 
 from .functools import deprecated
-from .codecs import b32lencode, b64encode, cb32encode
+from .codecs import b32lencode, b64encode, cb32decode, cb32encode, want_str
 
 
 class SiqType(enum.Enum):
@@ -235,9 +235,14 @@ class Siq(int):
 
     def to_base64(self, length: int = 15, *, strip: bool = True) -> str:
         return b64encode(self.to_bytes(length), strip=strip)
+    
     def to_cb32(self) -> str:
-        return cb32encode(self.to_bytes(15, 'big'))
+        return cb32encode(self.to_bytes(15, 'big')).lstrip('0')
     to_crockford = to_cb32
+    @classmethod
+    def from_cb32(cls, val: str | bytes):
+        return cls.from_bytes(cb32decode(want_str(val).zfill(24)))
+
     def to_hex(self) -> str:
         return f'{self:x}'
     def to_oct(self) -> str:

src/suou/sqlalchemy.py

@@ -278,7 +278,7 @@ def require_auth_base(cls: type[DeclarativeBase], *, src: AuthSrc, column: str |
         raise ValueError(msg)
         
     invalid_exc = src.invalid_exc or _default_invalid
-    required_exc = src.required_exc or (lambda: _default_invalid())
+    required_exc = src.required_exc or (lambda: _default_invalid('Login required'))
 
     def decorator(func: Callable):
         @wraps(func)