From: "be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org" <berg-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org>
To: pandoc-discuss <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
Subject: Re: Lua filter for section numbers in internal references
Date: Wed, 22 Dec 2021 22:59:40 -0800 (PST) [thread overview]
Message-ID: <d7ed1a43-0312-408d-a08a-94d1988837een@googlegroups.com> (raw)
In-Reply-To: <87sfukn12g.fsf-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
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Wow, thanks for that Albert! I wasn't aware that it was your code on
stackoverflow. I yet need to understand what it does exactly but I see the
key thing is obviously to look at div.content[1] in order to get the link
title.
On Wednesday, December 22, 2021 at 3:53:21 PM UTC+1 Albert Krewinkel wrote:
> be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org <be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org> writes:
>
> > I am trying to make a Lua filter that will replace the normal link text
> in
> > internal links with section numbers. I want to use internal links in my
> > markdown document like this:
> >
> > See the [Quick introduction].
> >
> > So, the links are given by the full title of the respective section they
> > refer to.
>
> Here's a quick rewrite of my old code that should do it.
> If there are internal links that should not be modified, simply add a
> title or a class to that link, and the filter will leave it alone.
>
> ``` lua
> local sections = {}
>
> function populate_section_numbers (doc)
> function populate (blocks)
> for _, div in pairs(blocks) do
> if div.t == 'Div' and div.attributes.number then
> local header = div.content[1]
> if header and header.t == 'Header' then
> sections['#' .. div.attr.identifier] = {
> number = div.attributes.number,
> }
> populate(div.content)
> end
> end
> end
> end
> populate(pandoc.utils.make_sections(true, nil, doc.blocks))
> end
>
> function resolve_section_ref (link)
> -- don't edit non-internal links or those with a title or a class.
> if link.target:sub(1, 1) ~= '#' or #link.classes > 0 or #link.title > 0
> then
> return nil
> end
> local section = sections[link.target]
> if section then
> link.content = {pandoc.Str(section.number .. '\u{A0}')} .. link.content
> return link
> end
> end
>
> return {
> {Pandoc = populate_section_numbers},
> {Link = resolve_section_ref}
> }
> ```
>
>
> --
> Albert Krewinkel
> GPG: 8eed e3e2 e8c5 6f18 81fe e836 388d c0b2 1f63 1124
>
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prev parent reply other threads:[~2021-12-23 6:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-22 9:16 be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org
[not found] ` <186dfc25-8ebd-43ef-8a5b-0fae22106712n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2021-12-22 11:12 ` Bastien DUMONT
2021-12-22 12:07 ` be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org
2021-12-22 12:12 ` be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org
[not found] ` <c8df6f45-5119-4d7c-b95c-ce1ecfc57a64n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2021-12-22 13:46 ` Bastien DUMONT
2021-12-22 14:53 ` Albert Krewinkel
[not found] ` <87sfukn12g.fsf-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
2021-12-23 6:59 ` be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org [this message]
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