add some functions

oxutils/hashes.py

@@ -0,0 +1,17 @@
+# -*- coding: utf-8 -*-
+# vi:si:et:sw=2:sts=2:ts=2
+# GPL written 2008 by j@pad.ma
+import sha
+import os
+
+def sha1sum(filename):
+  sha1 = sha.new()
+  file=open(filename)
+  buffer=file.read(4096)
+  while buffer:
+    sha1.update(buffer)
+    buffer=file.read(4096)
+  file.close()
+  return sha1.hexdigest()
+
+