Handle openaccess with field other than doi/url/eprint

[bastien-roucaries]

Hi,

This is a bug report but I think a documentation one. Some patent are openacess depending of country and if publied.

So I need to add openaccess icon only if type match open access country and if published date exist. And in this case I can generate a url.

I can I think absuse of the eprint and eprinttype field and use a sourcemap to fill eprint and eprinttype=patent if it match.

What do you think ?

Bastien

[bastien-roucaries]

Something like this work

\DeclareSourcemap{
   \maps[datatype=bibtex]{
     \map[overwrite]{
       \step[typesource=patent,typetarget=patent,final]
       \step[notfield=eprint,final]
       \step[notfield=eprinttype,final]
       \step[notfield=eprintclass,final]
       \step[fieldsource=type,fieldset=type,origfieldval,final]
       \step[fieldsource=number,fieldset=number,origfieldval,final]
       \step[fieldsource=type,match=\regexp{patent(?:req)?(?:us|uk|fr)?},final]
       \step[fieldsource=number,fieldset=eprint,append,origfieldval,final=false]
       \step[fieldsource=type,fieldset=eprinttype,fieldvalue={patent},final=false]
       \step[fieldsource=type,fieldset=eprintclass,origfieldval,final=false]
     }
     \map[overwrite]{
       \step[typesource=patent,typetarget=patent,final]
       \step[notfield=pubstate,final]
       \step[notfield=year,final]
       \step[notfield=date,final]
       \step[notfield=publishedyear,final]
       \step[notfield=publisheddate,final]
       \step[fieldsource=fileddate,fieldset=pubstate,fieldvalue=embargoted]
     }
     \map[overwrite]{
       \step[typesource=patent,typetarget=patent,final]
       \step[notfield=pubstate,final]
       \step[notfield=year,final]
       \step[notfield=date,final]
       \step[notfield=publishedyear,final]
       \step[notfield=publisheddate,final]
       \step[fieldsource=filedyear,fieldset=pubstate,fieldvalue=embargoted]
     }
   }
 }

\ExplSyntaxOn
\def\patentcanonical#1#2{
  \str_case_e:nnTF {#1}
  {
    {patentfr} {FR}
    {patentuk} {GB}
    {patentus} {US}
  }{#2}{#1}
}
\def\patenturl#1#2{
  worldwide.espacenet.com/patent/search?q=pn\%3D\patentcanonical{#1}{#2}
}
\ExplSyntaxOff
%\DeclareFieldFormat{eprint:patent}{%
%    EspaceNet\addcolon\space%
%    \hrefeprint{https://\patenturl{\thefield{eprintclass}}{\thefield{eprint}}}{\patentcanonical{\thefield{eprintclass}}{\thefield{eprint}}}
%  }%
\DeclareFieldFormat{eprint:patent}{}
\DeclareOpenAccessEprintUrl[always]{patent}{https://\patenturl{\thefield{eprintclass}}{\thefield{eprint}}}

[moewew]

This looks like very advanced stuff for which I cannot imagine a useful general interface or a place in the documentation.

If you think this could be useful for other people as well, you can always share your code via question and self-answer on TeX.SX or other TeX forums. With the right keywords this makes it likely that those who look for a similar thing will find it.