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.ma...@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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