daemon: Some code reorganization to make XML support more modular.

trunk/daemon/core/misc/xmlsession.py

@@ -0,0 +1,33 @@
+#
+# CORE
+# Copyright (c)2011-2013 the Boeing Company.
+# See the LICENSE file included in this distribution.
+#
+# author: Jeff Ahrenholz <jeffrey.m.ahrenholz@boeing.com>
+#
+
+'''
+Helpers for loading and saving XML files. savesessionxml(session, filename) is
+the main public interface here.
+'''
+
+import os.path
+from core.netns import nodes
+from xmlparser import CoreDocumentParser
+from xmlwriter import CoreDocumentWriter
+
+def opensessionxml(session, filename, start=False, nodecls=nodes.CoreNode):
+    ''' Import a session from the EmulationScript XML format.
+    '''
+    doc = CoreDocumentParser(session, filename, start, nodecls)
+    if start:
+        session.name = os.path.basename(filename)
+        session.filename = filename
+        session.node_count = str(session.getnodecount())
+        session.instantiate()
+
+def savesessionxml(session, filename):
+    ''' Export a session to the EmulationScript XML format.
+    '''
+    doc = CoreDocumentWriter(session)
+    doc.writexml(filename)