added filter method used to remove elements from the dom tree

diff --git a/geni/util/rspec.py b/geni/util/rspec.py
index 7aaae85..86b50fd 100644 (file)
--- a/geni/util/rspec.py
+++ b/geni/util/rspec.py
@@ -174,4 +174,26 @@ class Rspec():
                 return rdict
               
         return tempdict
+
+
+    def filter(self, tagname, attribute, valuelist, dom = None):
+        """
+        Removes all elements where:
+        1. tagname matches the element tag
+        2. attribute matches the element attribte
+        3. attribute value is in valuelist  
+        """
+
+        tempdict = {}
+        if not dom:
+            dom = self.rootNode
+       
+        if dom.localName in [tagname] and dom.attributes.has_key(attribute) and \
+           dom.attributes.get(attribute).value in valuelist:
+            dom.parentNode.removeChild(dom)
+           
+        if dom.hasChildNodes():
+            for child in dom.childNodes:
+                self.filter(tagname, attribute, valuelist, child) 
+
 # vim:ts=4:expandtab