Re: [NTG-context] xml in lua advice ?

19 Sep 2018


      My 2 cents:

local xmlflush = lxml.flush

local function text_or_xml(...)
  for i,v in ipairs(arg) do
    if "table" == type(v) then
      xmlflush(v)
    else
      context(v)
    end
  end
end

function xml.functions.heading(t)
  text_or_xml( "\\section{" , t , "}" )
end

Massimiliano

Il giorno mer, 19/09/2018 alle 15.56 +0200, Hans Hagen ha scritto:
...
On 9/19/2018 2:50 PM, Taco Hoekwater wrote:
...
Hi,
Is there a more elegant way to feed an xml tree into a context()
command
that what I have below?
\startluacode
function xml.functions.heading(t)
    context.section("{")
    lxml.flush(t)
    context("}")
end
\stopluacode
The subtree in ’t’ could have embedded xml tags that should be
processed,
so just stripping it clean will not do.
(this is not about \section as such, I just needed an example.
\startsection
would be more modern, but it would not help fix the issue )
it actually depends on what you do ... anyway here is some insight
(as 
xml-tex old-timer you'll probably recognize the madness)
% \enabletrackers[context*]
\starttext
% here is your missing mwe
\startbuffer[test]
<document>
     <section>some <b>bold</b> title</section>
</document>
\stopbuffer
% this will assume xml and relate some handlers
\setuphead[section]
   [coding=xml,
    xmlsetup=xml:flush]
\startxmlsetups xml:flush
     \xmlflush{#1}
\stopxmlsetups
% comment this one for your amusement
\startxmlsetups xml:b
     {\bf \xmlflush{#1}}
\stopxmlsetups
% here is the magic: you pass a reference
\startluacode
function xml.finalizers.heading(t)
     context.formatted.section("main::%i",t[1].ix)
end
\stopluacode
% this loads only (can happen at the lua end ... you can sort that
out)
\xmlloadbuffer{main}{test}{}
% this indexes the nodes (the ix keys, basically all these #1
argumehnts 
in setups use that trickery)
\xmladdindex{main}
% to be sure
\xmlsetsetup{main}{b}{xml:b}
% now we filter / apply your finalizer
\xmlfilter{main}{section/heading()}
% done
\stoptext
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Re: [NTG-context] xml in lua advice ?

mf