Re: Two treatments of same input file

["Gregory D. Weber" <spottedmetal-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Thu, 2021-12-09 at 09:48 +0000, Bastien DUMONT wrote:
> You can handle all of this using a Lua filter. 

I suspected the answer might lie in that direction.  So now it's time for me to
learn some Lua.  Okay, thanks for your advice!

> Assuming that your first heading will always start with "A" and the second
> with "Code to Produce a", I rewrote slightly your input in test.md:
> 
> ```
> ~~~ {.html heading="Form with a Button"}
> <form>
> <input id="b1" type="button" value="Apply" title="Button"/>
> </form>
> ~~~
> ```
> 
> Then I wrote in test.lua:
> 
> ```
> local HEADING_LEVEL = 2
> 
> function CodeBlock(block)
>   if block.attr.attributes.heading then
>     local raw_heading = block.attr.attributes.heading
>     local html_object_heading = pandoc.Header(HEADING_LEVEL, 'A ' ..
> raw_heading)
>     local html_object = pandoc.RawBlock('html5', block.text)
>     local code_block_heading = pandoc.Header(HEADING_LEVEL, 'Code to produce a
> ' .. raw_heading)
>     return { html_object_heading, html_object, code_block_heading, block }
>   end
> end
> ```
> 
> With the command pandoc test.md -L test.lua, I got the desired result.
> 
> You may want to modify it in order to adapt it to your real needs (like
> setting a "header-level" attribute on your raw block, etc.)
> 
> Le Wednesday 08 December 2021 à 06:52:34PM, Gregory Weber a écrit :
> > I'm work on creating a set of examples of HTML, JavaScript, and SVG code.
> > Each comes from a single source file, from which I want to produce a
> > web page showing
> > (a) the result of rendering the HTML or SVG or executing the JavaScript;
> > (b) the code itself, viewed as if in a text editor, and (ideally) with
> > syntax highlighting.
> > 
> > The best way I can think of doing this involves making two
> > transformations of the source file, running pandoc on each of them,
> > and the combining the outputs, probably by running pandoc a third time
> > with a custom template.
> > 
> > I'm wondering if there's any better way?
> > 
> > Here's a small example:
> > 
> > (1) Original source file:
> > 
> > <form>
> > <input id="b1" type="button" value="Apply" title="Button"/>
> > </form>
> > 
> > 
> > (2) Intermediate file 1:
> > 
> > ```{=html5}
> > <form>
> > <input id="b1" type="button" value="Apply" title="Button"/>
> > </form>
> > ```
> > 
> > (3) Intermediate file 2:
> > 
> > ~~~~{.html}
> > <form>
> > <input id="b1" type="button" value="Apply" title="Button"/>
> > </form>
> > ~~~~
> > 
> > (4) Desired final output would be something like this:
> > 
> > ...
> > 
> > <h2>A Form with a Button</h2>
> > 
> > <form>
> > <input id="b1" type="button" value="Apply" title="Button"/>
> > </form>
> > 
> > <h2>Code to Produce a Form with a Button</h2>
> > 
> > <div class="sourceCode" id="cb1"><pre class="sourceCode html"><code class=
> > "sourceCode html"><a class="sourceLine" id="cb1-1" title="1"><span
> > class="kw">&
> > lt;form&gt;</span></a>
> > <a class="sourceLine" id="cb1-2" title="2"><span class="kw">&lt;input</span>
> > <span class="ot"> id=</span><span class="st">&quot;b1&quot;</span><span
> > class=
> > "ot"> type=</span><span class="st">&quot;button&quot;</span><span
> > class="ot">
> > value=</span><span class="st">&quot;Apply&quot;</span><span class="ot">
> > title=
> > </span><span class="st">&quot;Button&quot;</span><span
> > class="kw">/&gt;</span>
> > </a>
> > <a class="sourceLine" id="cb1-3" title="3"><span class="kw">&lt;/form&gt;</
> > span></a></code></pre></div>
> > 
> > ...
> > 
> > 
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