That was too quick, sorry.
Hi Duncan,
I have used context’s own injectors for this :
<?context-directive injector addlinetopage ?>
\startsetups xml:directive:injector:addlinetopage
\adaptlayout[lines=+1]
\stopsetups
Or, for your line break example :
<?context-directive injector newline ?>
\startsetups xml:directive:injector:newline
\crlf
\stopsetups
Also, I have learned that you can just use arbitrary context code in xml:
\def\xmltexdirective#1#2{\doif{#1}{command}{#2}}
\xmlinstalldirective{tex}{xmltexdirective}
<?context-directive tex command \inframed{xxx} ?>
<?context-directive tex command \page ?>
<?context-directive tex command \crlf ?>
Best,
Denis
Von: Maier, Denis Christian (UB)
Gesendet: Montag, 2. Mai 2022 09:45
An: 'mailing list for ConTeXt users' <[email protected]>
Cc: Duncan Hothersall <[email protected]>
Betreff: AW: [NTG-context] XML processing instructions
Von: ntg-context
<[email protected]<mailto:[email protected]>> Im Auftrag von
Duncan Hothersall via ntg-context
Gesendet: Montag, 2. Mai 2022 09:20
An: mailing list for ConTeXt users
<[email protected]<mailto:[email protected]>>
Cc: Duncan Hothersall <[email protected]<mailto:[email protected]>>
Betreff: [NTG-context] XML processing instructions
I have a big set of existing XML books (held in a derivative of DocBook) which
I'm looking to start processing directly with ConTeXt. (Up to now I have a
system which converts the XML into ConTeXt code which is then processed, but
this is inefficient and lots of the code is now unsupported.)
I've had some success producing output, but my first real sticking point has
come with processing instructions. The existing XML contains lots of processing
instructions of the form
<?capdm whatever?>, some of which can be conditional and introduce new data
etc. But I'd be happy at this stage if I could just process the most basic one
of them, which is used to introduce a line stop in a running paragraph of text.
My best guess at how to do this was to use the lxml.preprocessor function to
convert the processing instruction into an element, and then process the
element as normal. But (a) my attempt didn't work, and (b) there may well be a
better way.
Minimal working example below, except that obviously the processing instruction
bit doesn't work!
Thanks for any help or insights.
Duncan
MWE:
------
\startbuffer[demo]
<book>
<para>A paragraph with<?capdm force_line_stop?>a processing
instruction.</para>
</book>
\stopbuffer
\startxmlsetups xml:demo:base
\xmlsetsetup{#1}{*}{xml:demo:*}
\stopxmlsetups
\xmlregisterdocumentsetup{demo}{xml:demo:base}
\startxmlsetups xml:demo:book
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups xml:demo:para
\xmlflush{#1}\endgraf
\stopxmlsetups
\startluacode
function lxml.preprocessor(data,settings)
return string.find(data,"<?capdm *force_line_stop?>")
and string.gsub(data,"<?capdm
*force_line_stop?>","<capdmlinestop></capdmlinestop/>")
or data
end
\stopluacode
\startxmlsetups xml:demo:capdmlinestop
\crlf
\xmlflush{#1}
\stopxmlsetups
\setupbodyfont[modern]
\starttext
\xmlprocessbuffer{demo}{demo}{}
\stoptext
------
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