1 files changed, 68 insertions, 1 deletions
diff --git a/lib/git/base.py b/lib/git/base.py
index 5e470181..687fb50a 100644
--- a/lib/git/base.py
+++ b/lib/git/base.py
@@ -1,4 +1,4 @@
-# lazy.py
+# base.py
 # Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
 #
 # This module is part of GitPython and is released under
@@ -30,3 +30,70 @@ class LazyMixin(object):
 
     def __bake_it__(self):
         self.__baked__ = True
+        
+        
+class Object(LazyMixin):
+    """
+    Implements an Object which may be Blobs, Trees, Commits and Tags
+    """
+    TYPES = ("blob", "tree", "commit", "tag")
+    __slots__ = ("repo", "id", "size")
+    type = None			# to be set by subclass
+    
+    def __init__(self, repo, id, size=None):
+        """
+        Initialize an object by identifying it by its id. All keyword arguments
+        will be set on demand if None.
+        
+        ``repo``
+        	repository this object is located in
+        ``id``
+            SHA1 or ref suitable for git-rev-parse
+        ``size``
+            Size of the object's data in bytes
+        """
+        super(Object,self).__init__()
+        self.repo = repo
+        self.id = id
+        self.size = size
+        
+    def __bake__(self):
+        """
+        Retrieve object information
+        """
+        self.size = int(self.repo.git.cat_file(self.id, s=True).rstrip())
+        
+    def __eq__(self, other):
+        """
+        Returns
+            True if the objects have the same SHA1
+        """
+        return self.id == other.id
+        
+    def __ne__(self, other):
+        """
+        Returns
+            True if the objects do not have the same SHA1
+        """
+        return self.id != other.id
+        
+    def __hash__(self):
+        """
+        Returns
+            Hash of our id allowing objects to be used in dicts and sets
+        """
+        return hash(self.id)
+        
+    def __str__(self):
+        """
+        Returns
+            string of our SHA1 as understood by all git commands
+        """
+        return self.id
+        
+    def __repr__(self):
+        """
+        Returns
+            string with pythonic representation of our object
+        """
+        return '<git.%s "%s">' % (self.__class__.__name__, self.id)