reading attribute from ancestor element in XML

reading attribute from ancestor element in XML

[massifr]

Hello list,
I have an XML fragment like this:

<div id="myid">
  <p><sup>12</sup> blah blah...</p>
</div>

In the typeset text I want to substitute the text of the sup element ("12") 
with the id ("myid") in its div grandfather.

The xmlsetup associated to the sup element looks like this:

\startxmlsetups xml:sup
  \xmlatt{\xmlfirst{#1}{../..}}{id}
\stopxmlsetups

This gives an error (TeX capacity exceeded).
I'm using ConTeXt version 2015.06.15.
I've tried \xmlfilter and \xmlall too, with different lpaths.
Sometimes ConTeXt ends without errors,
but I've never managed to get the text of that attribute.

What's the right way to backtrack to parent and ancestor nodes?
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___________________________________________________________________________________

Re: reading attribute from ancestor element in XML

[Hans Hagen]

On 10/6/2015 12:06 PM, massifr@fastwebnet.it wrote:
> Hello list,
> I have an XML fragment like this:
>
> <div id="myid">
>    <p><sup>12</sup> blah blah...</p>
> </div>
>
> In the typeset text I want to substitute the text of the sup element ("12")
> with the id ("myid") in its div grandfather.
>
> The xmlsetup associated to the sup element looks like this:
>
> \startxmlsetups xml:sup
>    \xmlatt{\xmlfirst{#1}{../..}}{id}
> \stopxmlsetups

\xmlattribute{#1}{../..}{id}


> This gives an error (TeX capacity exceeded).
> I'm using ConTeXt version 2015.06.15.
> I've tried \xmlfilter and \xmlall too, with different lpaths.
> Sometimes ConTeXt ends without errors,
> but I've never managed to get the text of that attribute.
>
> What's the right way to backtrack to parent and ancestor nodes?
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________