Re: [NTG-context] Modifying bibliography entries using lua

23 Jul 2018


      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
-----------------------------------------------------------------