How to add raw Markdown in filter?

How to add raw Markdown in filter?

[Ivan Lazar Miljenovic]

Is there any way using a filter to be able to inject markdown into a
document using a filter and have it be parsed/processed when
converting?  Ideally, I'd like to be able to generate PDF from the
result (`pandoc --read=markdown --write=latex --output=foo.pdf
--filter=./myFilter input.md`).

Using `RawBlock "markdown"` doesn't work as the rest of the document
has already been parsed, so the contents of those blocks are then
ignored.

As such, as far as I'm aware my options are:

* Try and write my own mini-parser that handles a subset of Markdown
and thus the filter can inject the correct Haskell representation of
the intended Markdown

* Use a 2-stage process for Pandoc to first apply the filter and write
out to Markdown, then pipe the results into Pandoc to convert to PDF
(not ideal as this is for a library that should be able to just
generate whatever results you want).

Is there anything else I can try and do?

-- 
Ivan Lazar Miljenovic
Ivan.Miljenovic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
http://IvanMiljenovic.wordpress.com

Re: How to add raw Markdown in filter?

[John MacFarlane]

If you write the filter in Haskell, you can simply use
the readMarkdown file from Text.Pandoc to parse the
Markdown.

Note that the lua filters functionality in the dev version
also provides access to the parsers, so you can do this
in lua also.

In other languages you'd have to shell out to pandoc.

+++ Ivan Lazar Miljenovic [Oct 09 17 12:38 ]:
>Is there any way using a filter to be able to inject markdown into a
>document using a filter and have it be parsed/processed when
>converting?  Ideally, I'd like to be able to generate PDF from the
>result (`pandoc --read=markdown --write=latex --output=foo.pdf
>--filter=./myFilter input.md`).
>
>Using `RawBlock "markdown"` doesn't work as the rest of the document
>has already been parsed, so the contents of those blocks are then
>ignored.
>
>As such, as far as I'm aware my options are:
>
>* Try and write my own mini-parser that handles a subset of Markdown
>and thus the filter can inject the correct Haskell representation of
>the intended Markdown
>
>* Use a 2-stage process for Pandoc to first apply the filter and write
>out to Markdown, then pipe the results into Pandoc to convert to PDF
>(not ideal as this is for a library that should be able to just
>generate whatever results you want).
>
>Is there anything else I can try and do?
>
>-- 
>Ivan Lazar Miljenovic
>Ivan.Miljenovic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>http://IvanMiljenovic.wordpress.com
>
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Re: How to add raw Markdown in filter?

[Ivan Lazar Miljenovic]

On 9 October 2017 at 14:50, John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org> wrote:
> If you write the filter in Haskell, you can simply use
> the readMarkdown file from Text.Pandoc to parse the
> Markdown.

Might have to do that, but was hoping to keep it using pandoc-types
only for licensing reasons (maybe just tell end-users to do it?
*shrug*).

> Note that the lua filters functionality in the dev version
> also provides access to the parsers, so you can do this
> in lua also.
>
> In other languages you'd have to shell out to pandoc.
>
> +++ Ivan Lazar Miljenovic [Oct 09 17 12:38 ]:
>>
>> Is there any way using a filter to be able to inject markdown into a
>> document using a filter and have it be parsed/processed when
>> converting?  Ideally, I'd like to be able to generate PDF from the
>> result (`pandoc --read=markdown --write=latex --output=foo.pdf
>> --filter=./myFilter input.md`).
>>
>> Using `RawBlock "markdown"` doesn't work as the rest of the document
>> has already been parsed, so the contents of those blocks are then
>> ignored.
>>
>> As such, as far as I'm aware my options are:
>>
>> * Try and write my own mini-parser that handles a subset of Markdown
>> and thus the filter can inject the correct Haskell representation of
>> the intended Markdown
>>
>> * Use a 2-stage process for Pandoc to first apply the filter and write
>> out to Markdown, then pipe the results into Pandoc to convert to PDF
>> (not ideal as this is for a library that should be able to just
>> generate whatever results you want).
>>
>> Is there anything else I can try and do?
>>
>> --
>> Ivan Lazar Miljenovic
>> Ivan.Miljenovic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
>> http://IvanMiljenovic.wordpress.com
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "pandoc-discuss" group.
>> To unsubscribe from this group and stop receiving emails from it, send an
>> email to pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> To post to this group, send email to pandoc-discuss-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/pandoc-discuss/CA%2Bu6gbxdqnG3Ok00OmZiC1V4kW6GyAZKnuS2robnJNq%2Bz_Z2AQ%40mail.gmail.com.
>> For more options, visit https://groups.google.com/d/optout.
>
>
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-- 
Ivan Lazar Miljenovic
Ivan.Miljenovic-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
http://IvanMiljenovic.wordpress.com

Re: How to add raw Markdown in filter?

[Saivan Hamama]

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If you're willing to use python, panflute also exposes a run_pandoc option, 
that you can use in a filter to parse your markdown to an AST.
This should work if you're willing to go that route :)

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