.

xmlrpcserver/deps/pygost-5.12/pygost/iface.py

@@ -0,0 +1,50 @@
+from abc import ABCMeta
+from abc import abstractmethod
+
+from pygost.utils import hexenc
+
+
+# This function is taken from six package as is
+def add_metaclass(metaclass):
+    """Class decorator for creating a class with a metaclass."""
+    def wrapper(cls):
+        orig_vars = cls.__dict__.copy()
+        slots = orig_vars.get("__slots__")
+        if slots is not None:
+            if isinstance(slots, str):
+                slots = [slots]
+            for slots_var in slots:
+                orig_vars.pop(slots_var)
+        orig_vars.pop("__dict__", None)
+        orig_vars.pop("__weakref__", None)
+        return metaclass(cls.__name__, cls.__bases__, orig_vars)
+    return wrapper
+
+
+@add_metaclass(ABCMeta)
+class PEP247(object):
+    @property
+    @abstractmethod
+    def digest_size(self):
+        """The size of the digest produced by the hashing objects.
+        """
+
+    @abstractmethod
+    def copy(self):
+        """Return a separate copy of this hashing object.
+        """
+
+    @abstractmethod
+    def update(self, data):
+        """Hash data into the current state of the hashing object.
+        """
+
+    @abstractmethod
+    def digest(self):
+        """Return the hash value as a string containing 8-bit data.
+        """
+
+    def hexdigest(self):
+        """Return the hash value as a string containing hexadecimal digits.
+        """
+        return hexenc(self.digest())