backported woraround for unicode issue in

zope.tal.xmlparser.XMLParser.parseString()

lib/python/Products/PageTemplates/__init__.py

@@ -26,7 +26,30 @@ misc_ = {}
 # available in sys.modules
 import ZTUtils
 
+
 def initialize(context):
     # Import lazily, and defer initialization to the module
     import ZopePageTemplate
     ZopePageTemplate.initialize(context)
+
+
+# HACK!!!
+# We need to monkeypatch the parseString method of the Zope 3 
+# XMLParser since the internal ZPT representation uses unicode
+# however the XMLParser (using Expat) can only deal with standard
+# Python strings. However we won't and can't convert directly
+# to UTF-8 within the ZPT wrapper code. 
+# Unicode support for (this issue) should be directly added
+# to zope.tal.xmlparser however this requires a new Zope 3.3.X
+# release. For now we fix it here.
+
+from zope.tal.xmlparser import XMLParser
+import logging
+
+def parseString(self, s):
+    if isinstance(s, unicode):
+        s = s.encode('utf-8')
+    self.parser.Parse(s, 1)
+
+XMLParser.parseString = parseString
+logging.info('Monkeypatching zope.tal.xmlparser.XMLParser.parseString()')

lib/python/Products/PageTemplates/tests/testZopePageTemplate.py

@@ -196,12 +196,14 @@ class ZopePageTemplateFileTests(ZopeTestCase):
         zpt = self._put(xml_iso_8859_15)
         self.assertEqual(zpt.output_encoding, 'utf-8')
         self.assertEqual(zpt.content_type, 'text/xml')
+        result = zpt.pt_render() # should not raise an exception
 
     def testPutXMLUTF8(self):
         """ XML: use always UTF-8 als output encoding """
         zpt = self._put(xml_utf8)
         self.assertEqual(zpt.output_encoding, 'utf-8')
         self.assertEqual(zpt.content_type, 'text/xml')
+        result = zpt.pt_render() # should not raise an exception
 
 class ZPTRegressions(unittest.TestCase):