Re: manipulating headline level

[BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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Super cool!

Den ons 29 juni 2022 14:25Albert Krewinkel <albert+pandoc-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
skrev:

> Dear juh,
>
> "'juh' via pandoc-discuss" <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org> writes:
>
> > Many markdown-files hierarchically ordered in folders.
> > Every file starts with the top-level headline mark "#".
> >
> > I want to convert these files like this:
> >
> > pandoc $(cat outline.txt) -o target.html
> >
> > where outline.txt contains the relative pathes to all files.
> >
> >
> > 00.md
> > 01/00.md
> > 01/01/00.md
> > 01/01/01.md
> > 01/01/02.md
> >
> > Is there a way to tell pandoc that it should regard the headline levels
> > according to the folder structure?
>
> Pandoc can't do this out of the box, but you could use a custom reader
> to correct the headings. The below requires the current dev version
> (nightly build), but could be rewritten to work with a released version,
> too.
>
> The script
>
>  - iterates over all input files,
>  - parses their contents as a separate document,
>  - shifts headers in each document by the number of subdirs the
>    respective file is in, and
>  - concatenates the individual per-file documents into a single
>    document that is then returned.
>
> Pass the reader file to pandoc via the `--from` parameter.
>
> ``` lua
> local format = 'markdown+smart'
>
> function Reader (sources, opts)
>   local doc = pandoc.Pandoc{}
>   for _, source in ipairs(sources) do
>     local path_components = #pandoc.path.split(source.name)
>     -- last path component is the filename
>     local depth = path_components - 1
>     doc = doc .. pandoc.read(source, format, opts):walk {
>       Header = function (h)
>         h.level = h.level + depth
>         return h
>       end
>     }
>   end
>   return doc
> end
> ```
>
> --
> Albert Krewinkel
> GPG: 8eed e3e2 e8c5 6f18 81fe  e836 388d c0b2 1f63 1124
>
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