Re: MWE for building a table using Lua

[msprev <msprevak-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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Thanks for the replies, and the hints. I'll continue to experiment to see 
if I can build a table in lua.

On Friday, May 27, 2022 at 11:43:11 AM UTC+1 BPJ wrote:

>
>
> Den tors 26 maj 2022 12:53K4zuki <k.yamamot...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
>
>> hint 1 - my note about Table structure (might be inaccurate w/ 2.18):
>>     https://gist.github.com/K4zuki/04e1e1af2fcf06db1a6ea640aa8feadd 
>>
>
> Thanks for this! My own stab at this, which may be seriously outdated, is 
> here:
>
> https://groups.google.com/g/pandoc-discuss/c/XE9YdlJNamU/m/oWZapmV5CwAJ
>
> I was aiming at the JSON structure because my intention was to implement 
> support for complex tables in Perl JSON filters, which I still use from 
> time to time because Perl has real Unicode support!
>
> As for col/row spans: doesn't the HTML reader/writer support them yet?
>
>
> hint 2 - my implementation in a filter (
>> https://github.com/pandocker/pandocker-lua-filters/blob/master/lua/csv2table.lua
>> ):
>> 1. prepare a minimum table markdown text as a local variable
>> 2. let pandoc convert the text, then extract Table object
>> ```lua
>> local table_template = [==[
>> | table |
>> |-------|
>> | cell |
>>
>> Table: caption
>> ]==]
>>
>> local my_table = pandoc.read(table_template, "markdown").blocks[1]
>> ```
>> 3. clone the object and replace the contents
>>
>
> Nice trick — once you have grokked the structure.
>
>
>
>> 2022年5月26日木曜日 18:06:06 UTC+9 Bastien Dumont:
>>
>>> The constructors don't take tables as their argument, but discrete 
>>> values. I have not found the definition of the constructors in the official 
>>> documentation, but you can look into this filter to see how they work: 
>>> https://github.com/pandoc/lua-filters/blob/master/list-table/list-table.lua 
>>>
>>> Le Thursday 26 May 2022 à 01:53:39AM, msprev a écrit : 
>>> > This creates the following structure -- all ok, except the table body, 
>>> which is 
>>> > empty ('[]'), and I cannot get it to appear. Any suggestions on what 
>>> I'm doing 
>>> > wrong would be gratefully received. 
>>> > 
>>> > ``` 
>>> > Table 
>>> > ( "" , [] , [] ) 
>>> > (Caption Nothing []) 
>>> > [ ( AlignLeft , ColWidthDefault ) 
>>> > , ( AlignDefault , ColWidthDefault ) 
>>> > ] 
>>> > (TableHead ( "" , [] , [] ) []) 
>>> > [] 
>>> > (TableFoot ( "" , [] , [] ) []) 
>>> > ``` 
>>> > On Wednesday, May 25, 2022 at 12:48:06 PM UTC+1 msprev wrote: 
>>> > 
>>> > I've been struggling to get my head around handling tables with Lua in 
>>> > pandoc 2.18. I'm trying to write a minimal working example to create a 
>>> > table as I can't seem to find one online. The code below does create a 
>>> > table, but with any empty table body and I can't figure out how to get 
>>> the 
>>> > body to appear. Can anyone help tell me what has gone wrong here? 
>>> > 
>>> > BTW, I tried to call the pandoc.TableBody() constructor, but that 
>>> throws an 
>>> > error as it doesn't seem to be defined ("attempt to call a nil value 
>>> (field 
>>> > 'TableBody')") 
>>> > 
>>> > ``` 
>>> > local caption = {long = {}} 
>>> > local colspecs = {{pandoc.AlignLeft, pandoc.ColWidthDefault}, 
>>> > {pandoc.AlignDefault, pandoc.ColWidthDefault}} 
>>> > local head = pandoc.TableHead() 
>>> > local cell1contents = { pandoc.Plain({pandoc.Str("cell1")}) } 
>>> > local cell2contents = { pandoc.Plain({pandoc.Str("cell2")}) } 
>>> > local cell1 = { alignment=pandoc.AlignDefault, contents=cell1contents, 
>>> > col_span=1, row_span=1 } 
>>> > local cell2 = { alignment=pandoc.AlignDefault, contents=cell2contents, 
>>> > col_span=1, row_span=1 } 
>>> > local row1 = { cells={pandoc.Cell(cell1), pandoc.Cell(cell2)} } 
>>> > local rows = { pandoc.Row(row1) } 
>>> > local bodies = { body=rows, head={}, row_head_columns=0 } 
>>> > local foot = pandoc.TableFoot() 
>>> > local mytable = pandoc.Table(caption, colspecs, head, bodies, foot) 
>>> > table.insert(doc.blocks, mytable) 
>>> > ``` 
>>> > 
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