Re: Wrapping sections of existing document in <div></div>

[H <agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org>]

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On 06/21/2023 11:36 AM, BPJ wrote:
> 1.  You have two lists, the original/old one and the new one.
> 2.  Push elements from the old list onto the new list until you get to the first element which should go into the new nested div.
> 3.  Create a third list and
> push elements from the old list onto that list until you get to the last
> element which should go into the div.
> 4.  Create a div from the third
> list.
> 5.  Push the div onto the new list.
> 6.  Either repeat steps 2–5 or resume pushing elements from the old
> list onto the new list until you get to the last element.
>
> ``````lua
> function Pandoc(doc)
>   local old = doc.blocks
>   local new = pandoc.Blocks({ })
>   local div = false
>   local i = 0
>   local elem = nil
>   while i < #old do
>     i = i + 1
>     elem = old[i]
>     if test_div_start_condition(elem) then
>       div = pandoc.Blocks({ elem })
>     elseif test_div_end_condition(elem) then
>       if div then
>         div[#div + 1] = elem
>         new[#new + 1] = pandoc.Div(div, { class = 'foo', bar = 'baz' })
>         div = nil
>         -- -- If this is the only div
>         -- while i < #old do
>         --   i = i + 1
>         --   new[#new + 1] = = old[i]
>         -- end
>       else
>         new[#new + 1] = elem
>       end
>     elseif div then
>       div[#div + 1] = elem
>     else
>       new[#new + 1] = elem
>     end
>   end
>   doc.blocks = new
>   return doc
> end
> ``````
>
>
> Den tis 20 juni 2023 02:16H <agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org <mailto:agents@meddatainc.com>> skrev:
>
>     On June 19, 2023 6:11:35 PM EDT, H <agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org <mailto:agents-FcZObrvlYduBUy7/sJONFg@public.gmane.org>> wrote:
>     >What is the "best" way of wrapping parts of an existing document in
>     ><div></div> in a filter?
>     >
>     >Using insert.table(existingtable, pandoc.Div(existingtextblocks)) does
>     >not work since the existing text blocks get duplicated in the output.
>     >
>     >I see two options but there might be others:
>     >
>     >- Surround existing text blocks with pandoc.RawInline(1, 'html,
>     >'<div>') and pandoc.RawInLine('html', '</div>').
>     >
>     >- Create a new table and use insert.table(newtable,
>     >pandoc.Div(existingtextblock)) and also insert the rest of the
>     >document.
>     >
>     >Are there other options?
>
>     Replying to my own question, it seems the most "elegant" way of accomplishing this requires this to be done be in two stages:
>
>     - First, delete the blocks in question from the block list table, eg doc.blocks.
>     - Second, insert them into the same table using pandoc.Div().
>
>     Unfortunately it seems table.delete() does not accept a list of blocks, only one block at a time, pandoc.Div, on the other hand, accepts a table. Here is a code example when I was trying it out:
>
>     local temp = {}
>     for i = 3, 1, -1 do
>       table.insert(temp, table.remove(doc.blocks, 5))
>     end
>
>     table.insert(doc.blocks, 2, pandoc.Div(temp))
>
>     The above code removes blocks 5 through 7 from doc.blocks, then inserts them, in the same order but surrounded by <div></div>, in position 2.
>
>     If there is a better way of accomplishing this, I would appreciate hearing it.
>
Thank you, it seems both your and mf's suggestion are similar so I should be all set.

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