wildcard selection in xmlfilter

* wildcard selection in xmlfilter
@ 2018-09-12 11:03 Hans van der Meer
  2018-09-12 11:23 ` Hans Hagen
  0 siblings, 1 reply; 3+ messages in thread
From: Hans van der Meer @ 2018-09-12 11:03 UTC (permalink / raw)
  To: NTG ConTeXt

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There is a difference of behaviour in \xmlfilter between 
(1) \xmlfilter{#1}{node/command(xmlsetup)} and
(2) \xmlfilter{#1}{*/command(xmlsetup)}
(3) \xmlfilter{#1}{*/*/command(xmlsetup)}

In case (1) the lpath ‘node’ results in processing of the <wildcard> nodes in all child nodes.
In case (2) and (3) no more than the corresponding level is searched.

Thus there is a difference in behaviour between node and * as an lpath.
Very unfortunate for me, because I need to process all nodes regardless of theeir node name, but selected on the basis of an attribute: \xmlfilter{#1}{*[@attribute==“yes”]. 
The difference in behaviour makes this impossible, because a general proceudre is impossible and doing a search with * and */* and */*/* etc. always will be one level too short, I expect.

Is this intended behaviour, and if so, is there a general solution?

dr. Hans van der Meer

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\startxmlsetups xml:testsetups
	\xmlsetsetup{test}{test|subnode}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:testsetups}

\startxmlsetups xml:shownamed
	<\xmltag{#1}> from <\xmltext{#1}{../tag()}> \type{wildcard[@selector=="yes"]}: \xmlflush{#1}\crlf
\stopxmlsetups
\startxmlsetups xml:showstarred
	<\xmltag{#1}> from <\xmltext{#1}{../tag()}> \type{*[@selector=="yes"]}: \xmlflush{#1}\crlf
\stopxmlsetups
\startxmlsetups xml:showdoublestarred
	<\xmltag{#1}> from <\xmltext{#1}{../tag()}> \type{*/*[@selector=="yes"]}: \xmlflush{#1}\crlf
\stopxmlsetups

\startxmlsetups xml:test
	\xmlfilter{#1}{wildcard[@selector=="yes"]/command(xml:shownamed)}\crlf
	\xmlfilter{#1}{*[@selector=="yes"]/command(xml:showstarred)}\crlf
	\xmlfilter{#1}{*/*[@selector=="yes"]/command(xml:showdoublestarred)}\crlf
\stopxmlsetups

\startxmlsetups xml:subnode
	Inside \xmltag{#1}\space\xmlflush{#1}
\stopxmlsetups

\startbuffer[test]
<test>
	<wildcard selector="yes">WILDCARD-1</wildcard>
	<subnode>
		<wildcard selector="yes">WILDCARD-2</wildcard>
	</subnode>
</test>
\stopbuffer

\starttext
\currentdate-\currenttime\quad\ConTeXt-version=\contextversion\blank
{\bf Testing wildcard}\par
\xmlprocessbuffer{test}{test}{}

\stoptext

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