From: Hans Hagen <j.hagen@xs4all.nl>
To: Jano Kula <jano.kula@gmail.com>
Cc: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: Setting and measuring boxes TeX/Lua
Date: Fri, 27 Nov 2020 19:05:29 +0100 [thread overview]
Message-ID: <ee287c4a-9089-0d24-cca0-5d7e17685ca7@xs4all.nl> (raw)
In-Reply-To: <CAPefzZ25tRrNQubBmoT=cYu393GS5AabtbJhfMUsQrN5UR=Mow@mail.gmail.com>
Hi Jano,
It's not clear to me what you want to measure when but here is a weekend
playground (you're locked down anyway).
\def\MacroJano#1%
{\writestatus{JANO}{ONE}
\setbox0=\hbox\bgroup\xmlflush{#1}\egroup}
\startluacode
function document.FunctionJano(id)
context.writestatus("JANO","ZERO")
token.expand_macro("MacroJano",true,id)
context("%p",tex.box[0].width)
context.writestatus("JANO","TWO")
end
\stopluacode
\startbuffer[doc]
<?xml version "1.0"?>
<document>
<section>one</section>
<section>one two</section>
<section>one two three</section>
</document>
\stopbuffer
\startxmlsetups xml:name
\xmlsetsetup{#1}{*}{xml:*}
\stopxmlsetups
\xmlregistersetup{xml:name}
\startxmlsetups xml:section
width: \ctxlua{document.FunctionJano("#1")}\par
\stopxmlsetups
\startxmlsetups xml:document
\xmlflush{#1}
\stopxmlsetups
\starttext
\xmlprocessbuffer{xml:name}{doc}{}
\stoptext
A clue: token.expand_macro will kind of 'run a local tex job'.
If this works for you. you know the price you have to pay ... wikify
Hans
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prev parent reply other threads:[~2020-11-27 18:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-25 18:31 Jano Kula
2020-11-25 20:25 ` Hans Hagen
2020-11-25 21:28 ` Jano Kula
2020-11-26 8:18 ` Hans Hagen
2020-11-27 16:47 ` Jano Kula
2020-11-27 18:05 ` Hans Hagen [this message]
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