Re: Modifying bibliography entries using lua

[Hans Hagen <j.hagen@xs4all.nl>]

On 7/23/2018 6:42 PM, Stanislav Sokolenko wrote:
> Dear list,
> 
> I'm struggling to output bibliography entries into lua for string 
> modification (like making a particular author name bold). In effect, I 
> just need something like the following:
> 
> \starttexdefinition btx:customauthor
>      \startluacode
>      local text = context.btxflush('author')
>      -- tex.sprint(text) -- fails because text remains nil
>      \stopluacode
> \stoptexdefinition
> 
> It's clear that btxflux is the wrong function for this as it writes the 
> contents to file rather than returning a variable in lua... Is there a 
> way to directly access what btxflush is writing through the publications 
> table or other means? I've gone over the source code but I can't 
> decipher what btxflush is actually doing.

This is not for the fainthearted so here we go

\startluacode
     function document.MyBoldPub(set,tag)
      -- local a = publications.getfield(set,tag,"author")
      -- inspect(a)
      -- local c = publications.getcasted(set,tag,"author")
      -- inspect(c)
         if c[1].surnames[1] == "Myname" then
             context.bold(function()
                 context.btxflush('author')
             end )
         else
             context.btxflush('author')
         end
     end
\stopluacode

\starttexdefinition btx:customauthor
     \ctxluacode{document.MyBoldPub("\currentbtxdataset","\currentbtxtag")}
\stoptexdefinition

try to avoid tex.print cum suis, use the proper context.* interface instead


> Thanks,
> 
> Stan
> 
> Longer MNWE:
> 
> \stopluacode
> 
> \startbuffer[ref]
> @article{solo,
>    author = {Lastname, Firstname},
>    title = {Solo work},
>    journal = {Journal},
>    year = {2000},
>    month = {1},
>    volume = {1}
> }
> \stopbuffer
> 
> \usebtxdataset[ref][ref.buffer]
> \setupbtx[dataset=ref]
> 
> \definebtxrendering[ref][dataset=ref]
> \setupbtx[default:cite]
>    [alternative=authoryear,
>     etallimit=1]
> 
> 
> \starttexdefinition btx:customauthor
>      \startluacode
>      local text = context.btxflush('author')
>      -- tex.sprint(text) -- text remains nill
>      \stopluacode
> \stoptexdefinition
> 
> \startsetups btx:default:list:article
>      \texdefinition{btx:customauthor}
>      \texdefinition{btx:default:title}
>      \texdefinition{btx:default:journal}
>      \texdefinition{btx:default:year}
>      \removeunwantedspaces
>      \removepunctuation
>      \btxperiod
> \stopsetups
> 
> \starttext
> 
> Citations: \cite[solo]
> 
> \startsubject[title=Bibliography]
> \placelistofpublications[ref][method=dataset]
> \stopsection
> 
> \stoptext
> 
> 
> ___________________________________________________________________________________ 
> 
> If your question is of interest to others as well, please add an entry 
> to the Wiki!
> 
> maillist : ntg-context@ntg.nl / 
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : http://contextgarden.net
___________________________________________________________________________________