On Monday, 23 April 2012 12:03:49 UTC+5:30, Karra wrote:
>
>
> On Monday, 23 April 2012 06:28:08 UTC+5:30, Karra wrote:
>
>
>> cElementTree.ParseError: unbound prefix: line 5, column 1552
>
>
> I just found this thread that suggests there is an uncaught parsing error
> in the internal google code. Can someone from the Contacts team comment on
> this, please?
>
> https://code.google.com/p/sync-google-contacts/issues/detail?id=5
>
I guess this issue has been known since Aug 2011, but there has been no
response from Google. But thank goodness, the code is open... I am able to
apply the attached patch and move on. Posting here so others can benefit as
well.
As noted in the comments, I have no idea why the invalid XML is being
generated, and hence, what the real impact of the patch is. I guess I'll
find out soon...
------
Fix invalid contact entry XML from Google Data server
Certain contacts - it is not entirely clear what sort of contacts -
generate invliad XML from Google that the client libraries are
unable to parse. This can cause an irrecoverable exception that looks
like: "cElementTree.ParseError: unbound prefix: line 1, column 3089"
The actual column number and line number may differ. We fix the problem
by patching the incoming XML by editing out the invalid parts. This p
atch is not extensively tested, but certainly allows life to move
forward.
diff --git a/lib/atom/core.py b/lib/atom/core.py
index a19a70d..1da703a 100644
--- a/lib/atom/core.py
+++ b/lib/atom/core.py
@@ -21,6 +21,7 @@
__author__ = '[email protected] (Jeff Scudder)'
+import string
import inspect
try:
from xml.etree import cElementTree as ElementTree
@@ -517,6 +518,19 @@ def parse(xml_string, target_class=None, version=1,
encoding=None):
xml_string = xml_string.encode(STRING_ENCODING)
else:
xml_string = xml_string.encode(encoding)
+
+ # For some contacts, the google data protocol returns invalid XML. This
+ # issue was originally reported on the python client api google groups,
but
+ # it essentially an underlying data api error. More on this error at:
+ # https://code.google.com/p/gdata-python-client/issues/detail?id=538
+ #
+ # This is a fatal error and applications cannot proceed when this error
+ # occurs. The following hack patches the received xml and allows life to
+ # go on. Ofcourse, there is really no confirmation yet from Google on
why we
+ # are getting invalid XML for certain contacts in the first place.
+ xml_string = string.replace(xml_string, r'<ns0:cc>', '')
+ xml_string = string.replace(xml_string, r'</ns0:cc>', '')
+
tree = ElementTree.fromstring(xml_string)
return _xml_element_from_tree(tree, target_class, version)
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