[lxml-dev] Serialization with namespaces

[Anders Bruun Olsen]

Stefan Behnel wrote:
> Stefan Behnel wrote:
>> Stefan Behnel wrote:
>>> Anders Bruun Olsen wrote:
>>>> Now the problem occurs when I try to serialize. When I serialize the
>>>> root, everything looks fine:
>>>>
>>>>    >>> etree.tostring(root, pretty_print=True)
>>>>    '<topicMap xmlns="http://www.topicmaps.org/xtm/1.0/"
>>>> xmlns:xlink="http://www.w3.org/1999/xlink" id="personnavnereg1">
>>>>    ...
>>>>
>>>> The XML Namespace is applied as it should. However on the topic-element
>>>> that I found using XPath no XML Namespace is output:
>>>>
>>>>    >>> etree.tostring(elem, pretty_print=True)
>>>>    '<topic id="abeleHenriksdatter">\n\t\t<instanceOf>\n\t\t\t<topicRef
>>>>   ...
>>>>
>>>> Even though the nsmap attribute is set correctly:
>>>>
>>>>    >>> elem.nsmap
>>>>    {None: 'http://www.topicmaps.org/xtm/1.0/', 'xlink':
>>>> 'http://www.w3.org/1999/xlink'}
>>> Hmm, I actually thought these problems were gone with 1.3, but I can reproduce
>>> this with the current trunk.
>> Ok, so the problem here is libxml2. It serialises only the namespaces that are
>> defined on the node itself, not all those that are defined in the node's context.
> 
> Here's a patch (against the trunk) that works for me. It copies the node
> before the serialisation and adds all namespaces that were declared up in the
> tree.
> 
> Stefan
> 

Something seems amiss with the patch:

$ svn co http://codespeak.net/svn/lxml/trunk lxml
$ cd lxml
$ patch <~/download/ns-serialisation.patch
can't find file to patch at input line 5
Perhaps you should have used the -p or --strip option?
The text leading up to this was:
--------------------------
|Index: src/lxml/proxy.pxi
|===================================================================
|--- src/lxml/proxy.pxi (Revision 46423)
|+++ src/lxml/proxy.pxi (Arbeitskopie)
--------------------------
File to patch:

-- 
Anders