[NTG-context] Map XML attributes to variables, dynamically

* [NTG-context] Map XML attributes to variables, dynamically
@ 2023-08-10  7:10 Thangalin
  2023-08-10  7:43 ` [NTG-context] " Hans Hagen
  0 siblings, 1 reply; 6+ messages in thread
From: Thangalin @ 2023-08-10  7:10 UTC (permalink / raw)
  To: mailing list for ConTeXt users

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Hello!

A Markdown document resembles the following:

::: {.concurrent title="Berth 5" location="San Diego"}
Text Goes Here
:::

::: {.concurrent title="Road" location="Beale AFB"}
Different Text Goes Here
:::

The XHTML generated from that document resembles:

<div class="concurrent" data-title="Berth 5" data-location="San Diego">
Text Goes Here
</div>
<div class="concurrent" data-title="Road" data-location="Beale AFB">
Different Text Goes Here
</div>

Environments for the DIV element gets translated using:

\startxmlsetups xml:div
  \start[\xmlatt{#1}{class}]\xmlflush{#1}\stop
\stopxmlsetups

This creates "\startconcurrent" and "\stopconcurrent", which are later
defined using "\definestartstop[concurrent]".

I'd like to dynamically define all the data- attributes to make key/value
pairs accessible from the document. For example, I have this:

\definestartstop[concurrent][
  before={%
    \blank[big]%
    \setMPtext{1}{Berth 5}%
    \startTextConcurrentFrame},
  after={\stopTextConcurrentFrame\blank[big]},
]

I'd like to replace \setMPText calls with a reference to a dynamically
created variable reference. For example:

\setMPtext{1}{\usermap[concurrent.title]}
\setMPtext{2}{\usermap[concurrent.location]}

I can verify the attribute values exist by exporting them to the document:

\startxmlsetups xml:div
  title:\xmlatt{#1}{data-title} location:\xmlatt{#1}{data-location}
  \start[\xmlatt{#1}{class}]\xmlflush{#1}\stop
\stopxmlsetups

How would you change the xml:div setup to create a map of its attributes as
key/value pairs?

Thank you!

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