From: "Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: xml in lua: how to say "ancestor"?
Date: Fri, 3 Mar 2017 17:47:44 +0100 [thread overview]
Message-ID: <12991568-a5aa-3603-9fe9-55eb5af4b9fe@uni-bonn.de> (raw)
In-Reply-To: <e27e78e5-345c-8d94-eaca-3a27114416a9@wxs.nl>
On 25.02.2017 21:49, Hans Hagen wrote:
> xml.attribute(e,"..[tag()='section' or tag()='chapter']","title")
>
> with an optional default
>
> (there is also p = xml.parent(e) and then you can access p.at.title ..
> so there are several ways(
>
> Hans
I am sorry it took me so long to play with this... But it still doesn't
do what I need. My problem is still: from a given element, I need to
grab the content of an attribute that may be two or three or four levels
up in the xml tree. The code below (adapted from Hans) still only works
for a parent, but I need access to an "ancestor."
Thomas
\starttext
\startbuffer[test]
<document>
<chapter title="OneC">
<section title="OneS">
<subsection title="OneSS">
Subsection Text
</subsection>
</section>
</chapter>
<chapter title="TwoC">
<subsection title="OneSS">
Subsection Text
</subsection>
</chapter>
</document>
\stopbuffer
\startluacode
function xml.functions.xml_subsection(e)
chaptertitle = xml.attribute(e, "..[tag()='chapter']", "title")
context("Title of chapter is: ")
context(chaptertitle)
context.par()
lxml.flush(e)
context.blank( { "2*line" })
end
\stopluacode
\startxmlsetups xml:test:setups
\xmlsetsetup{\xmldocument}{*}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:test:setups}
\startxmlsetups xml:document
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:chapter
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:section
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:subsection
\xmlfunction{#1}{xml_subsection}
\stopxmlsetups
\xmlprocessbuffer{main}{test}{}
\stoptext
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next prev parent reply other threads:[~2017-03-03 16:47 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-25 16:18 Thomas A. Schmitz
2017-02-25 18:30 ` Hans Hagen
2017-02-25 19:24 ` Thomas A. Schmitz
2017-02-25 20:10 ` Hans Hagen
2017-02-25 20:35 ` Thomas A. Schmitz
2017-02-25 20:49 ` Hans Hagen
2017-02-25 21:15 ` Thomas A. Schmitz
2017-03-03 16:47 ` Thomas A. Schmitz [this message]
2017-03-04 9:37 ` Hans Hagen
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