From 63a71baae6fab9e8a59d82a7158549d63c2c58cf Mon Sep 17 00:00:00 2001
From: calvin <calvin@e7d03fd6-7b0d-0410-9947-9c21f3af8025>
Date: Tue, 29 Mar 2005 11:30:47 +0000
Subject: [PATCH] add get_true method to ListDict

git-svn-id: https://linkchecker.svn.sourceforge.net/svnroot/linkchecker/trunk/linkchecker@2471 e7d03fd6-7b0d-0410-9947-9c21f3af8025
---
 linkcheck/containers.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/linkcheck/containers.py b/linkcheck/containers.py
index 8ae0f71a..441bc6c2 100644
--- a/linkcheck/containers.py
+++ b/linkcheck/containers.py
@@ -133,6 +133,15 @@ class ListDict (dict):
         self._keys = []
         super(ListDict, self).clear()
 
+    def get_true (self, key, default):
+        """
+        Reteurn default element if key is not in the dict, of if the
+        self[key] evaluates to False.
+        """
+        if key not in self or not self[key]:
+            return default
+        return self[key]
+
 
 class Node (object):
     """