Lua vs Python filters

Lua vs Python filters

[Saša Janiška]

Hello,

I'd like to write Tiki writer filter
(https://github.com/jgm/pandoc/issues/4825) and not being overly familiar with
either Lua or Python (although learning more Python* would probably provide
better investment of my time), I wonder which method is considered better
and/or easier Pandoc-wise? 


Sincerely,
Gour

* here I'm thinking about using e.g. Panflute

-- 
The working senses are superior to dull matter; mind is higher
than the senses; intelligence is still higher than the mind;
and he [the soul] is even higher than the intelligence.

Re: Lua vs Python filters

[Christophe Demko]

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If you choose python, panflute is a good choice

Le lundi 20 avril 2020 11:07:18 UTC+2, Saša Janiška a écrit :
>
> Hello, 
>
> I'd like to write Tiki writer filter 
> (https://github.com/jgm/pandoc/issues/4825) and not being overly familiar 
> with 
> either Lua or Python (although learning more Python* would probably 
> provide 
> better investment of my time), I wonder which method is considered better 
> and/or easier Pandoc-wise? 
>
>
> Sincerely, 
> Gour 
>
> * here I'm thinking about using e.g. Panflute 
>
> -- 
> The working senses are superior to dull matter; mind is higher 
> than the senses; intelligence is still higher than the mind; 
> and he [the soul] is even higher than the intelligence. 
>
>
>

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Re: Lua vs Python filters

[Albert Krewinkel]

Hi,

Saša Janiška writes:
> I'd like to write Tiki writer filter
> (https://github.com/jgm/pandoc/issues/4825) and not being overly familiar with
> either Lua or Python (although learning more Python* would probably provide
> better investment of my time), I wonder which method is considered better
> and/or easier Pandoc-wise?

There may be a bit of a misunderstanding: for a custom writer, Lua is
the only option. Writers and filters both receive the internal document
representation ("the AST") as input, but filters only modify the
document. Writers on the other hand create a "flat" string in the
desired output format from the input.

The code of filters and writers looks similar, as both deal with the
same input structure. However, filter functions receive AST elements as
input, while writer functions receive plain strings.

So for a Tiki writer, I suggest to write the output of

    pandoc --print-default-data-file=sample.lua

to a file and modify it to suite your needs.

---

For completeness, here's a quick comparison of Lua and Python filters:

Lua

  * is built-in and doesn't require additional software,
  * may work better in combination with Windows (Python is less commonly
    installed on Windows), and
  * is generally faster due to the way it is integrated into pandoc.

Python

  * is widely used and has more learning resources available,
  * makes it easier to access parents and siblings of AST elements, and
  * may be a natural choice when doing machine learning or data
    science.

--
Albert Krewinkel
GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124

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