On Sat, Mar 23, 2013 at 12:09:25PM +0000, Alex Bligh wrote:
> Daniel,
>
> On 23 Mar 2013, at 11:52, Daniel Veillard wrote:
>
> > ctxt->node = node;
actually it's good to set the doc too at that point before reusing
the context in the loop.
ctxt->doc = doc;
> > res = xmlXPathEval("./foo..", ctxt);
> > ...
> >
> > of course the subtree query will have to be relative, i.e. not
> > starting by /
>
> Ah! The point I'd missed is that you can set ctxt->node. I couldn't
> see an API call to set the current node. Could I suggest this might
> be a useful function (if only an inline) so it gets into the docs?
I though I had added a macro but searched for it an no it's not there.
In the python bindings there is an extra function called
libxml2mod.xmlXPathSetContextNode()
we could do something along this line in C or another way could be
to add a new function:
xmlXPathObjectPtr
xmlXPathNodeEval(xmlNodePtr node, const xmlChar *str, xmlXPathContextPtr ctx)
as a simple wrapper around xmlXPathEval
Daniel
--
Daniel Veillard | Open Source and Standards, Red Hat
veill...@redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
http://veillard.com/ | virtualization library http://libvirt.org/
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