Moved types

libfb2/types.py

@@ -0,0 +1,80 @@
+# -*- coding: utf-8 -*-
+"""
+    libfb2.types
+    ~~~~~~~~~~~~
+
+    Common type wrappers.
+
+    :copyright: (c) Copyright 2011 by Armin Ronacher.
+    :license: BSD, see LICENSE for more details.
+"""
+
+
+class PrimitiveWrapper(object):
+    __slots__ = ()
+
+    @property
+    def primitive(self):
+        raise NotImplementedError()
+
+    def __hash__(self):
+        return hash(self.primitive)
+
+    def __eq__(self, other):
+        if type(self) is not type(other):
+            return False
+        return self.primitive == other.primitive
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __repr__(self):
+        rv = self.primitive
+        if isinstance(rv, basestring):
+            rv = repr(rv)
+        return '<%s %s>' % (self.__class__.__name__, rv)
+
+
+class BytesPrimitiveWrapper(PrimitiveWrapper):
+    __slots__ = ('bytes',)
+
+    def __init__(self, bytes):
+        self.bytes = bytes
+
+    def __len__(self):
+        return len(self.bytes)
+
+    def __str__(self):
+        return str(self.bytes)
+
+    @property
+    def primitive(self):
+        return self.bytes
+
+
+class Blob(BytesPrimitiveWrapper):
+    """Represents a blob."""
+    __slots__ = ()
+
+
+class SHA1(BytesPrimitiveWrapper):
+    """SHA1 hashes are used for content hashes as it seems."""
+    __slots__ = ()
+
+    def __init__(self, bytes):
+        self.bytes = bytes
+
+    @property
+    def hex(self):
+        return self.bytes.encode('hex')
+
+    def __repr__(self):
+        return '<SHA1 %s>' % self.hex
+
+
+class Unknown(BytesPrimitiveWrapper):
+    __slots__ = ('code',)
+
+    def __init__(self, code, bytes):
+        self.code = code
+        self.bytes = bytes