From 3c2fef87e14a05f9f4deff93ee6d9fbbcfc47ec5 Mon Sep 17 00:00:00 2001
From: "Chris St. Pierre" <chris.a.st.pierre@gmail.com>
Date: Tue, 19 Jun 2012 14:05:47 -0400
Subject: added XMLMatch() method of StructFile to resolve Group/Client tags
 recursively and return an XML document

---
 src/lib/Bcfg2/Server/Plugin.py | 69 +++++++++++++++++++++++++++++++-----------
 1 file changed, 52 insertions(+), 17 deletions(-)

diff --git a/src/lib/Bcfg2/Server/Plugin.py b/src/lib/Bcfg2/Server/Plugin.py
index fb5e115a9..8185edab1 100644
--- a/src/lib/Bcfg2/Server/Plugin.py
+++ b/src/lib/Bcfg2/Server/Plugin.py
@@ -677,35 +677,47 @@ class StructFile(XMLFileBacked):
     def __init__(self, name):
         XMLFileBacked.__init__(self, name)
 
-    def _match(self, item, metadata):
-        """ recursive helper for Match() """
-        if isinstance(item, lxml.etree._Comment):
-            return []
-        elif item.tag == 'Group':
-            rv = []
+    def _include_element(self, item, metadata):
+        """ determine if an XML element matches the metadata """
+        if item.tag == 'Group':
             if ((item.get('negate', 'false').lower() == 'true' and
                  item.get('name') not in metadata.groups) or
                 (item.get('negate', 'false').lower() == 'false' and
                  item.get('name') in metadata.groups)):
-                for child in item.iterchildren():
-                    rv.extend(self._match(child, metadata))
-            return rv
+                return True
+            else:
+                return False
         elif item.tag == 'Client':
-            rv = []
             if ((item.get('negate', 'false').lower() == 'true' and
                  item.get('name') != metadata.hostname) or
                 (item.get('negate', 'false').lower() == 'false' and
                  item.get('name') == metadata.hostname)):
+                return True
+            else:
+                return False
+        elif isinstance(item, lxml.etree._Comment):
+            return False
+        else:
+            return True
+
+    def _match(self, item, metadata):
+        """ recursive helper for Match() """
+        if self._include_element(item, metadata):
+            if item.tag == 'Group' or item.tag == 'Client':
+                rv = []
+                if self._include_element(item, metadata):
+                    for child in item.iterchildren():
+                        rv.extend(self._match(child, metadata))
+                return rv
+            else:
+                rv = copy.copy(item)
+                for child in rv.iterchildren():
+                    rv.remove(child)
                 for child in item.iterchildren():
                     rv.extend(self._match(child, metadata))
-            return rv
+                return [rv]
         else:
-            rv = copy.copy(item)
-            for child in rv.iterchildren():
-                rv.remove(child)
-            for child in item.iterchildren():
-                rv.extend(self._match(child, metadata))
-            return [rv]
+            return []
 
     def Match(self, metadata):
         """Return matching fragments of independent."""
@@ -714,6 +726,29 @@ class StructFile(XMLFileBacked):
             rv.extend(self._match(child, metadata))
         return rv
 
+    def _xml_match(self, item, metadata):
+        """ recursive helper for XMLMatch """
+        if self._include_element(item, metadata):
+            if item.tag == 'Group' or item.tag == 'Client':
+                for child in item.iterchildren():
+                    item.remove(child)
+                    item.getparent().append(child)
+                    self._xml_match(child, metadata)
+                item.getparent().remove(item)
+            else:
+                for child in item.iterchildren():
+                    self._xml_match(child, metadata)
+        else:
+            item.getparent().remove(item)
+
+    def XMLMatch(self, metadata):
+        """ Return a rebuilt XML document that only contains the
+        matching portions """
+        rv = copy.deepcopy(self.xdata)
+        for child in rv.iterchildren():
+            self._xml_match(child, metadata)
+        return rv
+
 
 class INode:
     """
-- 
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