From misa at rpath.com  Tue Jan 31 16:07:46 2012
From: misa at rpath.com (Mihai Ibanescu)
Date: Tue, 31 Jan 2012 21:07:46 +0000
Subject: rpath-xmllib: Hopefully properly handling xml:base attributes
Message-ID: <201201312107.q0VL7kDo016618@scc.eng.rpath.com>

changeset:   14e25159a12e
user:        Mihai Ibanescu <https://issues.rpath.com/>
date:        Tue, 31 Jan 2012 16:06:23 -0500

Hopefully properly handling xml:base attributes

diff --git a/rpath_xmllib/api1.py b/rpath_xmllib/api1.py
--- a/rpath_xmllib/api1.py
+++ b/rpath_xmllib/api1.py
@@ -19,6 +19,7 @@
 """
 
 import os
+import sys
 import StringIO
 from xml import sax
 
@@ -344,6 +345,12 @@
         # Now walk all attributes and qualify them with the namespace if
         # necessary
         for (nsName, attrName), attrVal in nonNsAttr:
+            if nsName == 'xml' and nsName not in self._nsMap:
+                # Bare xml: with no xmlns:xml specification
+                # Reading http://www.w3.org/TR/xmlbase/#syntax
+                # we'll assume that an undefined xml namespace prefix is
+                # bound to DataBinder.xmlBaseNamespace
+                self._nsMap[nsName] = self._nsAttributes[nsName] = DataBinder.xmlBaseNamespace
             if nsName is not None and nsName not in self._nsMap:
                 raise UndefinedNamespaceError(nsName)
             self._otherAttributes[(nsName, attrName)] = attrVal
@@ -855,6 +862,7 @@
 
     """
     xmlSchemaNamespace = 'http://www.w3.org/2001/XMLSchema-instance'
+    xmlBaseNamespace = 'http://www.w3.org/XML/1998/namespace'
     BindingHandlerFactory = BindingHandler
 
     def __init__(self, typeDict = None):
@@ -1035,7 +1043,8 @@
         try:
             parser.parse(stream)
         except sax.SAXParseException:
-            raise InvalidXML
+            exc_info = sys.exc_info()
+            raise InvalidXML, exc_info[1], exc_info[2]
         rootNode = self.contentHandler.rootNode
         self.contentHandler.rootNode = None
         return rootNode