filter contents of xml elements

* filter contents of xml elements
@ 2009-10-28 15:17 Jelle Huisman
  2009-10-28 15:32 ` Taco Hoekwater
  0 siblings, 1 reply; 6+ messages in thread
From: Jelle Huisman @ 2009-10-28 15:17 UTC (permalink / raw)
  To: mailing list for ConTeXt users

Hi all,

First of all a big thank you to Hans for MkIV xml support which is so 
much easier to understand than the MKII based method (or is that just 
me?) Anyway, I'm processing a rather messy html file and I would like to 
do some conditional processing based on the actual content of the 
element. See example below: I have linked <h3> with \subject but I would 
like to drop this element if the content of the element matches 'Skip 
title'.
Any hints? Thanks!
Jelle

\startbuffer[test]
<html>
<h3>Title 1</h3>
<p>Hello world.</p>
<h3>Skip title</h3>
<p>Hello world!</p>
<h3>Title 2</h3>
<p>Hello world?</p>
<h3>Title 3</h3>
<p>Hello :-)</p>
</html>
\stopbuffer

\startxmlsetups xml:setups
     \xmlsetsetup{main}{html|h3|p}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:setups}

\startxmlsetups xml:html
     \xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:h3
     \subject{\xmlflush{#1}} % but drop this if content of element is 
'Skip Title'
\stopxmlsetups

\startxmlsetups xml:p
     \xmlflush{#1}\par
\stopxmlsetups

\starttext
   \xmlprocessbuffer{main}{test}{}
\stoptext

Expected outcome:
   Title 1
   Hello world.
   Hello world!
   Title 2
   Hello world?
   Title 3
   Hello :-)
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