Implement portage.config.setdefault() in order to provide more of the standard mapping interface.

svn path=/main/trunk/; revision=3172

1 files changed, 8 insertions, 0 deletions

diff --git a/pym/portage.py b/pym/portage.py
index 7a8258547..3c026ebc6 100644
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -1615,6 +1615,14 @@ class config:
 		"""Called to implement membership test operators (in and not in)."""
 		return bool(self.has_key(mykey))
 
+	def setdefault(self, k, x=None):
+		if k in self:
+			return self[k]
+		else:
+			myvalue = x
+			self[k] = x
+			return myvalue
+
 	def keys(self):
 		return unique_array(flatten([x.keys() for x in self.lookuplist]))