On 11/01/19 10:26 AM, Aditya Mahajan wrote:
> Hi,
>
> I have an XML file (which is generated via a program that I have no
> control over), which contains elements as follows:
>
> <p>
> <equation text="$$y_1(t) = 1, t \geq 0$$">
> <img alt="$$y_1(t) = 1, t \geq 0$$" class="equation"
> height="15px" src="Lab01_eq10401623798909303081.png" width="95px"/>
> </equation>
> </p>
>
> I want to typeset the `text` attribute of equation (and ignore the <img>
> tag). So, I tried:
>
> \startxmlsetups matlab
> % Bunch of missing definitions
> \xmlsetsetup{#1}{equation}{matlab:*}
> \stopxmlsetups
>
> \startxmlsetups matlab:equation
> \xmlatt{#1}{text}
> \stopxmlsetups
>
> This literally typesets `$$y_1(t) = 1, t \geq 0$$`. How can I flush the
> attribute using ctxcatcodes? (There is \xmlflushcontent, but that is for
> content and not attributes).
You could write your own attribute fetcher in Lua. Probably there is a
more elegant method.
\startbuffer[test]
<p>
<equation text="$$y_1(t) = 1, t \geq 0$$">
<img alt="$$y_1(t) = 1, t \geq 0$$" class="equation"
height="15px" src="Lab01_eq10401623798909303081.png" width="95px"/>
</equation>
</p>
\stopbuffer
\startxmlsetups matlab
% Bunch of missing definitions
\xmlsetsetup{#1}{p}{matlab:*}
\xmlsetsetup{#1}{equation}{matlab:*}
\stopxmlsetups
\startxmlsetups matlab:p
\xmlflush{#1}
\stopxmlsetups
\startxmlsetups matlab:equation
\xmlfunction{#1}{equation}
\stopxmlsetups
\startluacode
local a = "text"
local ctxcatcodes = catcodes.numbers.ctxcatcodes
function xml.functions.equation(id)
local e = lxml.getid(id)
if e then
local at = e.at
if at then
local att = at[a]
if att ~= "" then
context.sprint(ctxcatcodes,att)
end
end
end
end
\stopluacode
\xmlregistersetup{matlab}
\starttext
\xmlprocessbuffer{test}{test}{}
\stoptext
>
> Thanks,
> Aditya
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