* Lua filter for section numbers in internal references
@ 2021-12-22 9:16 be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org
[not found] ` <186dfc25-8ebd-43ef-8a5b-0fae22106712n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
0 siblings, 1 reply; 7+ messages in thread
From: be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org @ 2021-12-22 9:16 UTC (permalink / raw)
To: pandoc-discuss
[-- Attachment #1.1: Type: text/plain, Size: 2019 bytes --]
Hi,
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. I found a recipe at stackoverflow
(https://stackoverflow.com/questions/54128461/how-to-use-latex-section-numbers-in-pandoc-cross-reference)
which does this if the link is given like this:
See the [](#quick-introduction)
This is the Lua code:
local make_sections = (require 'pandoc.utils').make_sections
local section_numbers = {}
function populate_section_numbers (doc)
function populate (elements)
for _, el in pairs(elements) do
if el.t == 'Div' and el.attributes.number then
section_numbers['#' .. el.attr.identifier] = el.attributes.number
populate(el.content)
end
end
end
populate(make_sections(true, nil, doc.blocks))
end
function resolve_section_ref (link)
if #link.content > 0 or link.target:sub(1, 1) ~= '#' then
return nil
end
local section_number = pandoc.Str(section_numbers[link.target])
return pandoc.Link({section_number}, link.target, link.title, link.attr)
end
return {
{Pandoc = populate_section_numbers},
{Link = resolve_section_ref}
}
While I do understand what it does, I cannot find out how to change it to
my case. How can I retrieve the part written in [] instead of the
attributes when scanning the document for those internal links? Or is the
not even possible?
Any idea is appreciated.
Torsten
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com.
[-- Attachment #1.2: Type: text/html, Size: 2916 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
[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
2021-12-22 14:53 ` Albert Krewinkel
1 sibling, 2 replies; 7+ messages in thread
From: Bastien DUMONT @ 2021-12-22 11:12 UTC (permalink / raw)
To: pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw
It seems that you can use pandoc-crossref for such case: see the manual here (https://github.com/lierdakil/pandoc-crossref/blob/master/docs/index.md).
To answer the technical part of the question, `pandoc -t native <<< 'See the [Quick introduction].'` shows that "[Quick introduction]" is parsed as a normal string. You can create a span instead by adding a class: [Quick introduction]{.sectionref}. But even then, it will be simplier to parse its content if it is limited to one string (like "Quick-introduction").
Le Wednesday 22 December 2021 à 01:16:01AM, be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org a écrit :
> Hi,
>
> 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. I found a recipe at stackoverflow (https://stackoverflow.com/questions/
> 54128461/how-to-use-latex-section-numbers-in-pandoc-cross-reference) which does
> this if the link is given like this:
>
> See the [](#quick-introduction)
>
> This is the Lua code:
>
> local make_sections = (require 'pandoc.utils').make_sections
> local section_numbers = {}
>
> function populate_section_numbers (doc)
> function populate (elements)
> for _, el in pairs(elements) do
> if el.t == 'Div' and el.attributes.number then
> section_numbers['#' .. el.attr.identifier] = el.attributes.number
> populate(el.content)
> end
> end
> end
> populate(make_sections(true, nil, doc.blocks))
> end
>
> function resolve_section_ref (link)
> if #link.content > 0 or link.target:sub(1, 1) ~= '#' then
> return nil
> end
> local section_number = pandoc.Str(section_numbers[link.target])
> return pandoc.Link({section_number}, link.target, link.title, link.attr)
> end
>
> return {
> {Pandoc = populate_section_numbers},
> {Link = resolve_section_ref}
> }
>
>
>
> While I do understand what it does, I cannot find out how to change it to my
> case. How can I retrieve the part written in [] instead of the attributes when
> scanning the document for those internal links? Or is the not even possible?
>
> Any idea is appreciated.
>
>
> Torsten
>
> --
> 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 [1]pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To view this discussion on the web visit [2]https://groups.google.com/d/msgid/
> pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com.
>
> References:
>
> [1] mailto:pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> [2] https://groups.google.com/d/msgid/pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com?utm_medium=email&utm_source=footer
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/YcMIB/cIBo3JwTa5%40localhost.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
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
1 sibling, 0 replies; 7+ messages in thread
From: be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org @ 2021-12-22 12:07 UTC (permalink / raw)
To: pandoc-discuss
[-- Attachment #1.1: Type: text/plain, Size: 4120 bytes --]
Thanks for your ideas. I had considered pandoc-crossref also but didn't
want to introduce a new dependency without a real need. If it can be
accomplished using a simple and small Lua filter, I would prefer this.
I also observed that the native output creates a normal string. However,
using Pandoc's make_section function, the references are delivered as DIVs
with a number attribute. This is easy
On Wednesday, December 22, 2021 at 12:13:38 PM UTC+1 Bastien Dumont wrote:
> It seems that you can use pandoc-crossref for such case: see the manual
> here (
> https://github.com/lierdakil/pandoc-crossref/blob/master/docs/index.md).
>
> To answer the technical part of the question, `pandoc -t native <<< 'See
> the [Quick introduction].'` shows that "[Quick introduction]" is parsed as
> a normal string. You can create a span instead by adding a class: [Quick
> introduction]{.sectionref}. But even then, it will be simplier to parse its
> content if it is limited to one string (like "Quick-introduction").
>
> Le Wednesday 22 December 2021 à 01:16:01AM, be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org a
> écrit :
> > Hi,
> >
> > 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. I found a recipe at stackoverflow (
> https://stackoverflow.com/questions/
> > 54128461/how-to-use-latex-section-numbers-in-pandoc-cross-reference)
> which does
> > this if the link is given like this:
> >
> > See the [](#quick-introduction)
> >
> > This is the Lua code:
> >
> > local make_sections = (require 'pandoc.utils').make_sections
> > local section_numbers = {}
> >
> > function populate_section_numbers (doc)
> > function populate (elements)
> > for _, el in pairs(elements) do
> > if el.t == 'Div' and el.attributes.number then
> > section_numbers['#' .. el.attr.identifier] = el.attributes.number
> > populate(el.content)
> > end
> > end
> > end
> > populate(make_sections(true, nil, doc.blocks))
> > end
> >
> > function resolve_section_ref (link)
> > if #link.content > 0 or link.target:sub(1, 1) ~= '#' then
> > return nil
> > end
> > local section_number = pandoc.Str(section_numbers[link.target])
> > return pandoc.Link({section_number}, link.target, link.title, link.attr)
> > end
> >
> > return {
> > {Pandoc = populate_section_numbers},
> > {Link = resolve_section_ref}
> > }
> >
> >
> >
> > While I do understand what it does, I cannot find out how to change it
> to my
> > case. How can I retrieve the part written in [] instead of the
> attributes when
> > scanning the document for those internal links? Or is the not even
> possible?
> >
> > Any idea is appreciated.
> >
> >
> > Torsten
> >
> > --
> > 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 [1]pandoc-discus...-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit [2]
> https://groups.google.com/d/msgid/
> > pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com.
> >
> > References:
> >
> > [1] mailto:pandoc-discus...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > [2]
> https://groups.google.com/d/msgid/pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com?utm_medium=email&utm_source=footer
>
>
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/503bf9a0-73f8-49f4-a9a6-abbf01a24650n%40googlegroups.com.
[-- Attachment #1.2: Type: text/html, Size: 6767 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
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>
1 sibling, 1 reply; 7+ messages in thread
From: be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org @ 2021-12-22 12:12 UTC (permalink / raw)
To: pandoc-discuss
[-- Attachment #1.1: Type: text/plain, Size: 4287 bytes --]
Thanks for your ideas. I had considered pandoc-crossref also but didn't
want to introduce a new dependency without a real need. If it can be
accomplished using a simple and small Lua filter, I would prefer this.
I also observed that the native output creates a normal string. However,
using Pandoc's make_section function, the references are delivered as DIVs
with a number attribute. This is easy to process. I just need access to the
text string inside the square brackets. So, how to access the text within a
DIV? I think this is the thing I need to know ...
On Wednesday, December 22, 2021 at 12:13:38 PM UTC+1 Bastien Dumont wrote:
> It seems that you can use pandoc-crossref for such case: see the manual
> here (
> https://github.com/lierdakil/pandoc-crossref/blob/master/docs/index.md).
>
> To answer the technical part of the question, `pandoc -t native <<< 'See
> the [Quick introduction].'` shows that "[Quick introduction]" is parsed as
> a normal string. You can create a span instead by adding a class: [Quick
> introduction]{.sectionref}. But even then, it will be simplier to parse its
> content if it is limited to one string (like "Quick-introduction").
>
> Le Wednesday 22 December 2021 à 01:16:01AM, be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org a
> écrit :
> > Hi,
> >
> > 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. I found a recipe at stackoverflow (
> https://stackoverflow.com/questions/
> > 54128461/how-to-use-latex-section-numbers-in-pandoc-cross-reference)
> which does
> > this if the link is given like this:
> >
> > See the [](#quick-introduction)
> >
> > This is the Lua code:
> >
> > local make_sections = (require 'pandoc.utils').make_sections
> > local section_numbers = {}
> >
> > function populate_section_numbers (doc)
> > function populate (elements)
> > for _, el in pairs(elements) do
> > if el.t == 'Div' and el.attributes.number then
> > section_numbers['#' .. el.attr.identifier] = el.attributes.number
> > populate(el.content)
> > end
> > end
> > end
> > populate(make_sections(true, nil, doc.blocks))
> > end
> >
> > function resolve_section_ref (link)
> > if #link.content > 0 or link.target:sub(1, 1) ~= '#' then
> > return nil
> > end
> > local section_number = pandoc.Str(section_numbers[link.target])
> > return pandoc.Link({section_number}, link.target, link.title, link.attr)
> > end
> >
> > return {
> > {Pandoc = populate_section_numbers},
> > {Link = resolve_section_ref}
> > }
> >
> >
> >
> > While I do understand what it does, I cannot find out how to change it
> to my
> > case. How can I retrieve the part written in [] instead of the
> attributes when
> > scanning the document for those internal links? Or is the not even
> possible?
> >
> > Any idea is appreciated.
> >
> >
> > Torsten
> >
> > --
> > 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 [1]pandoc-discus...-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit [2]
> https://groups.google.com/d/msgid/
> > pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com.
> >
> > References:
> >
> > [1] mailto:pandoc-discus...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > [2]
> https://groups.google.com/d/msgid/pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com?utm_medium=email&utm_source=footer
>
>
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/c8df6f45-5119-4d7c-b95c-ce1ecfc57a64n%40googlegroups.com.
[-- Attachment #1.2: Type: text/html, Size: 6949 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
[not found] ` <c8df6f45-5119-4d7c-b95c-ce1ecfc57a64n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
@ 2021-12-22 13:46 ` Bastien DUMONT
0 siblings, 0 replies; 7+ messages in thread
From: Bastien DUMONT @ 2021-12-22 13:46 UTC (permalink / raw)
To: pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw
Have you looked at this? https://pandoc.org/lua-filters.html#type-div
Le Wednesday 22 December 2021 à 04:12:29AM, be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org a écrit :
> Thanks for your ideas. I had considered pandoc-crossref also but didn't want to
> introduce a new dependency without a real need. If it can be accomplished using
> a simple and small Lua filter, I would prefer this.
>
> I also observed that the native output creates a normal string. However, using
> Pandoc's make_section function, the references are delivered as DIVs with a
> number attribute. This is easy to process. I just need access to the text
> string inside the square brackets. So, how to access the text within a DIV? I
> think this is the thing I need to know ...
>
> On Wednesday, December 22, 2021 at 12:13:38 PM UTC+1 Bastien Dumont wrote:
>
> It seems that you can use pandoc-crossref for such case: see the manual
> here ([1]https://github.com/lierdakil/pandoc-crossref/blob/master/docs/
> index.md).
>
> To answer the technical part of the question, `pandoc -t native <<< 'See
> the [Quick introduction].'` shows that "[Quick introduction]" is parsed as
> a normal string. You can create a span instead by adding a class: [Quick
> introduction]{.sectionref}. But even then, it will be simplier to parse its
> content if it is limited to one string (like "Quick-introduction").
>
> Le Wednesday 22 December 2021 à 01:16:01AM, be...@typoscriptics.de a écrit
> :
> > Hi,
> >
> > 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. I found a recipe at stackoverflow ([2]https://stackoverflow.com/
> questions/
> > 54128461/how-to-use-latex-section-numbers-in-pandoc-cross-reference)
> which does
> > this if the link is given like this:
> >
> > See the [](#quick-introduction)
> >
> > This is the Lua code:
> >
> > local make_sections = (require 'pandoc.utils').make_sections
> > local section_numbers = {}
> >
> > function populate_section_numbers (doc)
> > function populate (elements)
> > for _, el in pairs(elements) do
> > if el.t == 'Div' and el.attributes.number then
> > section_numbers['#' .. el.attr.identifier] = el.attributes.number
> > populate(el.content)
> > end
> > end
> > end
> > populate(make_sections(true, nil, doc.blocks))
> > end
> >
> > function resolve_section_ref (link)
> > if #link.content > 0 or link.target:sub(1, 1) ~= '#' then
> > return nil
> > end
> > local section_number = pandoc.Str(section_numbers[link.target])
> > return pandoc.Link({section_number}, link.target, link.title, link.attr)
> > end
> >
> > return {
> > {Pandoc = populate_section_numbers},
> > {Link = resolve_section_ref}
> > }
> >
> >
> >
> > While I do understand what it does, I cannot find out how to change it to
> my
> > case. How can I retrieve the part written in [] instead of the attributes
> when
> > scanning the document for those internal links? Or is the not even
> possible?
> >
> > Any idea is appreciated.
> >
> >
> > Torsten
> >
> > --
> > 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 [1]pandoc-discus...-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> > To view this discussion on the web visit [2][3]https://groups.google.com/
> d/msgid/
> > pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%[4]
> 40googlegroups.com.
> >
> > References:
> >
> > [1] mailto:pandoc-discus...-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> > [2] [5]https://groups.google.com/d/msgid/pandoc-discuss/
> 186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com?utm_medium=email&
> utm_source=footer
>
>
> --
> 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 [6]pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org
> To view this discussion on the web visit [7]https://groups.google.com/d/msgid/
> pandoc-discuss/c8df6f45-5119-4d7c-b95c-ce1ecfc57a64n%40googlegroups.com.
>
> References:
>
> [1] https://github.com/lierdakil/pandoc-crossref/blob/master/docs/index.md
> [2] https://stackoverflow.com/questions/
> [3] https://groups.google.com/d/msgid/
> [4] http://40googlegroups.com/
> [5] https://groups.google.com/d/msgid/pandoc-discuss/186dfc25-8ebd-43ef-8a5b-0fae22106712n%40googlegroups.com?utm_medium=email&utm_source=footer
> [6] mailto:pandoc-discuss+unsubscribe-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
> [7] https://groups.google.com/d/msgid/pandoc-discuss/c8df6f45-5119-4d7c-b95c-ce1ecfc57a64n%40googlegroups.com?utm_medium=email&utm_source=footer
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/YcMsUFst47Y3iiza%40localhost.
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
[not found] ` <186dfc25-8ebd-43ef-8a5b-0fae22106712n-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>
2021-12-22 11:12 ` Bastien DUMONT
@ 2021-12-22 14:53 ` Albert Krewinkel
[not found] ` <87sfukn12g.fsf-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
1 sibling, 1 reply; 7+ messages in thread
From: Albert Krewinkel @ 2021-12-22 14:53 UTC (permalink / raw)
To: pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw
be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org <berg-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
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: Lua filter for section numbers in internal references
[not found] ` <87sfukn12g.fsf-9EawChwDxG8hFhg+JK9F0w@public.gmane.org>
@ 2021-12-23 6:59 ` be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org
0 siblings, 0 replies; 7+ messages in thread
From: be...-GbY3e145aRm8w6eVIr4Tmg@public.gmane.org @ 2021-12-23 6:59 UTC (permalink / raw)
To: pandoc-discuss
[-- Attachment #1.1: Type: text/plain, Size: 2359 bytes --]
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
>
--
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 view this discussion on the web visit https://groups.google.com/d/msgid/pandoc-discuss/d7ed1a43-0312-408d-a08a-94d1988837een%40googlegroups.com.
[-- Attachment #1.2: Type: text/html, Size: 3327 bytes --]
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-12-23 6:59 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-12-22 9:16 Lua filter for section numbers in internal references 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 is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).