[NTG-context] Re: xmldoif: checking for contents of attribute

["Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>]

One way would be to do the search in Lua; when you have multiple searches to perform, that may be the easiest way to go. For example:

\startxmlsetups xml:test
                \xmlsetsetup{#1}{*}{-}
                \xmlsetsetup{#1}{doc|element}{xml:*}
\stopxmlsetups
 
\xmlregisterdocumentsetup{test}{xml:test}
 
\startxmlsetups xml:doc
\xmlflush{#1}
\stopxmlsetups
 
\startxmlsetups xml:element
	 \xmlfunction {#1} {element}
\stopxmlsetups
 
\startluacode
function xml.functions.element (t)
	 if t.at.class and t.at.class:find ("abc") then
			context.startcolor { "blue" }
			lxml.flush (t)
			context.stopcolor ()
	 else
			context.startcolor { "red" }
			lxml.flush (t)
			context.stopcolor ()
	 end
end
\stopluacode 
 
\startbuffer[test]
<?xml version="1.0" encoding="UTF-8"?>
<doc>
<element class="abcdefg">Yes</element>
<element>No</element>
</doc>
\stopbuffer
 
\starttext
 
\xmlprocessbuffer{test}{test}{}
 
\stoptext

Hope that gets you started.

Thomas

> On 24. Aug 2023, at 16:11, denis.maier@unibe.ch wrote:
> 
> Hi,
>  I’m trying to check whether an attribute contains (or, actually starts with) a given string.
> I’ve tried a whole bunch of different combinations, but I’ve had no luck so far. Minimal example below. Anyone has a hint?
>  Best,
> Denis
>   %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
> \startxmlsetups xml:test
>                 \xmlsetsetup{#1}{*}{-}
>                 \xmlsetsetup{#1}{doc|element}{xml:*} \stopxmlsetups
>  \xmlregisterdocumentsetup{test}{xml:test}
>   \startxmlsetups xml:doc
> \xmlflush{#1}
> \stopxmlsetups
>  \startxmlsetups xml:element
> \xmlfilter{#1}{./find(attribute('class'), 'abc')/command(xml:whatever)}
>  \xmldoifelse{#1}{./attribute('class')/contains('abc')} {Yes}{No}
> \stopxmlsetups
>  \startxmlsetups xml:whatever
> Yes
> \stopxmlsetups
>  \startbuffer[test]
> <?xml version="1.0" encoding="UTF-8"?>
> <doc>
> <element class="abcdefg">Yes</element>
> <element>No</element>
> </doc>
> \stopbuffer
>  \starttext
>  \xmlprocessbuffer{test}{test}{}
>  \stoptext


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