1 files changed, 21 insertions, 0 deletions
diff --git a/pym/portage/env/validators.py b/pym/portage/env/validators.py
new file mode 100644
index 000000000..fb29b8d29
--- /dev/null
+++ b/pym/portage/env/validators.py
@@ -0,0 +1,21 @@
+# validators.py Portage File Loader Code
+# Copyright 2007 Gentoo Foundation
+# $Id$
+
+from portage.dep import isvalidatom
+
+ValidAtomValidator = isvalidatom
+
+def PackagesFileValidator(atom):
+	""" This function mutates atoms that begin with - or *
+	    It then checks to see if that atom is valid, and if
+	    so returns True, else it returns False.
+	    
+	    Args:
+		atom: a string representing an atom such as sys-apps/portage-2.1
+	"""
+	if atom.startswith("*") or atom.startswith("-"):
+		atom = atom[1:]
+	if not isvalidatom(atom):
+		return False
+	return True