libsaria: Save and load python objects

I do this using cPickle.  load_obj() takes a default constructor
function in case the object cannot be created.

libsaria/storage/__init__.py

@@ -6,6 +6,7 @@ import cPickle as pickle
 import libsaria
 
 USER_DIR  = path.expanduser("~")
+PROTO     = pickle.HIGHEST_PROTOCOL
 
 saria = ".saria"
 if libsaria.__dev__ == True:
@@ -14,11 +15,24 @@ SARIA_DIR = path.join(USER_DIR, saria)
 if path.exists(SARIA_DIR) == False:
 	os.mkdir(SARIA_DIR)
 
-def load_file(filename, default):
-	file = path.join(SARIA_DIR, filename)
+
+def full_path(filename):
+	return path.join(SARIA_DIR, filename)
+
+def save_obj(filename, object):
+	f = open(full_path(filename), 'w')
+	p = pickle.Pickler(f, PROTO)
+	p.dump(object)
+	f.close()
+
+def load_obj(filename, default):
+	file = full_path(filename)
 	if path.exists(file) == False:
 		return default()
 	f = open(file)
-	item = pickle.loads(f.read())
+	try:
+		object = pickle.loads(f.read())
+	except:
+		object = default()
 	f.close()
-	return item
+	return object