Re: [xml] Xpath question

["Yong Chen (yongche)" <chen cisco com>]

Thanks Daniel. I did some tests for xmlSaveTree, it basically prints out
the selected nodes and their children.

Is there any way to print out the selected nodes and their parents (till
root)? I can certainly do the traversal via node->parent. Just in case
you already have some API available (which will trim the non-selected
nodes from the original doc and do xmlDocDump(stdout, doc)).

Thanks,
Yong Chen

> -----Original Message-----
> From: Daniel Veillard [mailto:veillard redhat com] 
> Sent: Thursday, January 11, 2007 2:07 AM
> To: Yong Chen (yongche)
> Cc: xml gnome org
> Subject: Re: [xml] Xpath question
> 
> On Wed, Jan 10, 2007 at 05:57:37PM -0800, Yong Chen (yongche) wrote:
> >  
> > Hi,
> > 
> > I plan to use xpath in libxml2 to get a subset of a xmldoc, 
> I know it 
> > can be done by calling xmlXPathEvalExpression(), the result is a 
> > xmlXPathObjectPtr which has a "nodesetval" member pointing 
> to selected 
> > nodes (of type xmlNodeSetPtr).
> > 
> > My question is, after getting the selected nodes, is there 
> any API I 
> > can call to dump the selected nodes in xml tree format? There is a 
> > convenient API xmlDocDump(stdout, doc) to dump the whole doc in xml 
> > tree format, I'm looking for something like xmlDocDumpSubset(doc,
> > selected-nodes) to dump only the selected nodes in the doc.
> 
>   See http://xmlsoft.org/html/libxml-xmlsave.html#xmlSaveTree
> 
> Daniel
> 
> --
> Red Hat Virtualization group http://redhat.com/virtualization/
> Daniel Veillard      | virtualization library  http://libvirt.org/
> veillard redhat com  | libxml GNOME XML XSLT toolkit  
> http://xmlsoft.org/ http://veillard.com/ | Rpmfind RPM search 
> engine  http://rpmfind.net/
>