Re: Wrapping sections of text with <div></div> in custom filter

[H <agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org>]

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On 05/25/2023 04:38 PM, 'William Lupton' via pandoc-discuss wrote:
> Have you considered the --sections-divs option (https://pandoc.org/MANUAL.html#option--section-divs)?
>
> For example, this markdown:
>
> # A
>
> ## A1
>
> ## A2
>
> # B
>
> gives the following:
>
> (1) pandoc section-divs.md
>
> <h1 id="a">A</h1>
> <h2 id="a1">A1</h2>
> <h2 id="a2">A2</h2>
> <h1 id="b">B</h1>
>
> (2) pandoc section-divs.md --section-divs
>
> <section id="a" class="level1">
> <h1>A</h1>
> <section id="a1" class="level2">
> <h2>A1</h2>
> </section>
> <section id="a2" class="level2">
> <h2>A2</h2>
> </section>
> </section>
> <section id="b" class="level1">
> <h1>B</h1>
> </section>
>
> (3) pandoc section-divs.md --section-divs --to=html4
>
> <div id="a" class="section level1">
> <h1>A</h1>
> <div id="a1" class="section level2">
> <h2>A1</h2>
> </div>
> <div id="a2" class="section level2">
> <h2>A2</h2>
> </div>
> </div>
> <div id="b" class="section level1">
> <h1>B</h1>
> </div>
>
> On Thu, 25 May 2023 at 20:36, H <agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org <mailto:agents@meddatainc.com>> wrote:
>
>     On May 25, 2023 6:42:49 AM EDT, Felix SOEDJEDE <soefelix-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org <mailto:soefelix-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>> wrote:
>     >You could use Fenced divs:
>     >https://pandoc.org/MANUAL.html#divs-and-spans
>     >
>     >You can put inside headers, paragraphs, code blocks, etc.
>     >
>     >
>     >Le jeudi 25 mai 2023 à 01:20:09 UTC+2, H a écrit :
>     >
>     >> On 05/24/2023 04:51 PM, H wrote:
>     >> > Using pandoc 3.1.2 and am trying my hand at writing my first writer
>     >to
>     >> customize HTML output for a specific, predefined newsletter format.
>     >> >
>     >> > The source document is written in markdown, contains headers of
>     >various
>     >> levels, paragraphs of text, links to images and mail links. No lists,
>     >no
>     >> tables and no code blocks.
>     >> >
>     >> > The document is structured with an introductory section, multiple
>     >> identically formatted sections and then a final section at the end. I
>     >need
>     >> to wrap various portions of the structure with <div></div> at
>     >multiple
>     >> levels in order to achieve the desired formatting. Some of the
>     ><div></div>
>     >> tags need to wrap H1, H2, image, multiple paragraphs, other
>     ><div></div>
>     >> tags wrap only one such item. In addition, most HTML tag need to have
>     >some
>     >> predefined custom style information.
>     >> >
>     >> > This output will be manually added to a certain newsletter editor
>     >in a
>     >> CRM system and I cannot add any CSS information whatsoever,
>     >everything has
>     >> to be structured as outlined above.
>     >> >
>     >> > Since I am new to writing filters, I am looking for some
>     >suggestions how
>     >> approach the <div></div> wrapping when multiple different HTML items
>     >need
>     >> to be wrapped.
>     >> >
>     >> > Thank you.
>     >> >
>     >> I should add that one <div></div> pair may enclose H1, H2, image, and
>     >
>     >> several paragraphs until the next H1 tag or end of document. Another
>     >> <div></div> pair (within the just-mentioned pair) may enclose the
>     >image and
>     >> several paragraphs, again until the next H1 tag (or end of document).
>     >There
>     >> are some additional levels of <div> pairs but this describes the gist
>     >of it.
>     >>
>     >> Suggestions welcome!
>     >>
>     >>
>
>     I do not want to make any changes to the source markdown document, the appropriate processing needs to be done in my custom output HTML filter.
>
>     I am looking into the following (simplified) flow example:
>     - Add a <div> tag when encountering a H2 element.
>     - Add the corresponding </div> tag when encountering a H1 or H2 element or the end of the document.
>
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It's somewhat close but I need to do additional customization. Where can I find the code this uses so I can look at it and use as a base for my own writer?

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