[NTG-context] XML and math
Aditya Mahajan
adityam at umich.edu
Fri Jan 11 00:21:53 CET 2019
On Thu, 10 Jan 2019, Hans Hagen wrote:
> On 1/10/2019 10:26 PM, 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).
> Time for an "aha, I knew it" moment ...
:-) Thanks.
Follow-up question: How do I escape entities inside the attributes. One
snippet is:
<p>
<equation text="$$x_2(t) = \begin{cases} t, & 0 \leq t
< 5 \\ -t+10, & t \geq
5\end{cases}$$">$$x_2(t) =
\begin{cases} t, & 0 \leq t < 5 \\ -t+10, & t \geq
5\end{cases}$$</equation>
</p>
This contains `
` which I want to convert to either newline or blank.
(I have to use the text attribute. The content has the right information
in this particular instance due to a bug in the conversion)
Aditya
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