\ProvidesFile{software.bbx}[2022/08/01 bibliography driver extension for software entries, Roberto Di Cosmo]
%
% Reference implementation of a BibLaTeX style for the software family of bibliographic entries
%
% 2020 - 2022 Roberto Di Cosmo <roberto@dicosmo.org>
%
\RequireBiber[3]
\RequirePackage{xurl}
%
% Toggles for typesetting additional ids and printing labels
%
\newtoggle{bbx:halid}
\newtoggle{bbx:swhid}
\newtoggle{bbx:shortswhid}
\newtoggle{bbx:vcs}
\newtoggle{bbx:swlabels}
\newtoggle{bbx:license}

\DeclareBibliographyOption[boolean]{halid}[true]{%
  \settoggle{bbx:halid}{#1}}
\DeclareBibliographyOption[boolean]{swhid}[true]{%
  \settoggle{bbx:swhid}{#1}}
\DeclareBibliographyOption[boolean]{shortswhid}[false]{%
  \settoggle{bbx:shortswhid}{#1}}
\DeclareBibliographyOption[boolean]{swlabels}[true]{%
  \settoggle{bbx:swlabels}{#1}}
\DeclareBibliographyOption[boolean]{vcs}[true]{%
  \settoggle{bbx:vcs}{#1}}
\DeclareBibliographyOption[boolean]{license}[true]{%
  \settoggle{bbx:license}{#1}}

\ExecuteBibliographyOptions{halid,swhid,shortswhid,swlabels,vcs,license}

%
% Declare inheritance rules (valid only in LaTeX preamble!)
%
\DeclareDataInheritance{software}{softwareversion,softwaremodule,codefragment}{\inherit{*}{*}}
\DeclareDataInheritance{softwareversion}{softwaremodule,codefragment}{\inherit{*}{*}}
\DeclareDataInheritance{softwaremodule}{codefragment}{\inherit{*}{*}}

%
% Localization
%
\DeclareLanguageMapping{english}{english-software}
\DeclareLanguageMapping{french}{french-software}

%
% Macros
%

%
% Notice the use of \edef to force expansion of the macro parameters before calling \nolinkurl
%
\newbibmacro*{swurl+urldate}{%
  \mkbibacro{URL}\addcolon\addspace%
     \ifhyperref%
        {\href{\strfield{url}}{\nolinkurl{\strfield{url}}}}%
        {\edef\temp{\noexpand\nolinkurl{\strfield{url}}}\temp}%
  \iffieldundef{urlyear}%
    {}%
    {\setunit*{\addspace}%
     \usebibmacro{urldate}}}

%
% Support multiline SWHIDs and create swhidcore field from swhid if missing
%
\DeclareStyleSourcemap{
  \maps[datatype=bibtex,overwrite=true]{
    \map{
      \step[fieldsource=swhid, match=\regexp{\s}, replace={}]
    }
    \map{
      \step[fieldsource=swhid]
      \step[fieldset=swhidcore, origfieldval]
      \step[fieldsource=swhidcore, match=\regexp{;.*}, replace={}]
    }
  }
}

%
% Formatting fields for the software entries
%

\DeclareFieldFormat[softwaremodule,codefragment]{subtitle}{\mkbibquote{#1\isdot}}
\DeclareFieldFormat[software,softwareversion,softwaremodule,codefragment]{url}{
  \iftoggle{bbx:url}%
	   {\usebibmacro{swurl+urldate}}
           {}%
}
\DeclareFieldFormat[software,softwareversion,softwaremodule,codefragment]{hal_id}{
  \iftoggle{bbx:halid}%
           {\mkbibacro{HAL}\addcolon\addspace%
             \ifhyperref%
                 {\href{https://hal.archives-ouvertes.fr/#1\thefield{hal_version}}{\(\langle\)\nolinkurl{#1\thefield{hal_version}}\(\rangle\)}}%
                 {\(\langle\)\nolinkurl{#1}\thefield{hal_version}\(\rangle\)}%
           }%
           {}%
}

%
% Notice the use of \edef to force expansion of the macro parameters before calling \nolinkurl
%
\DeclareFieldFormat[software,softwareversion,softwaremodule,codefragment]{swhid}{%
  \iftoggle{bbx:swhid}%
           {\mkbibacro{SWHID}\addcolon\addspace%
             \ifhyperref%
                 {\href{http://archive.softwareheritage.org/#1}{\(\langle\)\nolinkurl{%
  		    \iftoggle{bbx:shortswhid}{\thefield{swhidcore}}{#1}%
		    }\(\rangle\)}}%
                 {\(\langle\){\edef\temp{\noexpand\nolinkurl{%
  		    \iftoggle{bbx:shortswhid}{\thefield{swhidcore}}{#1}%
		    }}\temp}\(\rangle\)}%
           }%
           {}%
}
\DeclareFieldFormat[software,softwareversion,softwaremodule,codefragment]{repository}{%
  \iftoggle{bbx:vcs}%
           {\mkbibacro{VCS}\addcolon\addspace%
               \ifhyperref%
                   {\href{#1}{\nolinkurl{#1}}}%
                   {\nolinkurl{#1}}%
           }%
           {}%
}
\DeclareListFormat[software,softwareversion,softwaremodule,codefragment]{license}{%
  \usebibmacro{list:delim}{#1}%
  #1\isdot
  \usebibmacro{list:andothers}}

%
% Add here special eprint formats
%

%
% ASCL
%
\DeclareFieldFormat{eprint:ascl}{%
 \mkbibacro{ASCL}\addcolon\addspace%
  \ifhyperref
    {\href{https://ascl.net/#1}{%
         \(\langle\)ascl\addcolon\nolinkurl{#1}\(\rangle\)%
       \iffieldundef{eprintclass}
         {}
         {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}
    {\(\langle\)ascl\addcolon\nolinkurl{#1}\(\rangle\)%
     \iffieldundef{eprintclass}
       {}
       {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}
}

%
% swMATH
%
\DeclareFieldFormat{eprint:swmath}{%
 \mkbibacro{SWMATH}\addcolon\addspace%
  \ifhyperref
    {\href{https://www.swmath.org/software/#1}{%
         \(\langle\)swmath\addcolon\nolinkurl{#1}\(\rangle\)%
       \iffieldundef{eprintclass}
         {}
         {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}}
    {\(\langle\)swmath\addcolon\nolinkurl{#1}\(\rangle\)%
     \iffieldundef{eprintclass}
       {}
       {\addspace\texttt{\mkbibbrackets{\thefield{eprintclass}}}}}
}

%
% Macros to format output
%
\newbibmacro*{swtitleauthoreditoryear}{%
  \printnames{author}\addcomma%
  \setunit{\addspace}%
  \printfield{title}\addspace%
  \printfield{version}\addspace%
  \ifnameundef{editor}%
    {}%
    {\printtext[parens]{%
        \bibstring{edited}\addspace%
        \printnames{editor}}}%
    \setunit*{\addcomma\addspace}%
    \printdate%
}

%
\newbibmacro*{swsubtitleauthoreditoryear}{%
  \printnames{author}\addcomma%
  \setunit{\addspace}%
  \iffieldundef{subtitle}%
               {}
               {\printfield{subtitle}\addcomma\addspace%
                 \bibstring{swpartof}\addspace
               }%
  \printfield{title}\addspace%
  \printfield{version}\addspace%
  \ifnameundef{editor}%
    {}
    {\printtext[parens]{%
        \bibstring{edited}\addspace%
        \printnames{editor}}}%
    \setunit*{\addcomma\addspace}%
    \printdate%
}

\newbibmacro*{codefragmenttitleauthoreditoryear}{%
  \printnames{author}\addcomma%
  \setunit{\addspace}%
  \iffieldundef{subtitle}%
               {}
               {\printfield{subtitle}\addcomma\addspace%
                 \bibstring{swexc}\addspace
               }%
  \printfield{title}\addspace%
  \printfield{version}\addspace%
  \ifnameundef{editor}%
    {}
    {\printtext[parens]{%
        \bibstring{edited}\addspace%
        \printnames{editor}}}%
    \setunit*{\addcomma\addspace}%
    \printdate%
}

\newbibmacro{licenses}{%
  \iflistundef{license}
               {}
               {\iftoggle{bbx:license}%
                 {\newunitpunct
                   \mkbibacro{Lic}\addcolon
                   \printlist{license}
                 }%
                 {}%
               }
}
  
\newbibmacro*{swids}{%
  \printfield{doi}%
  \setunit*{\addcomma\addspace}%
  \printfield{hal_id}%
  \setunit*{\addcomma\addspace}%
  \iftoggle{bbx:eprint}
    {\usebibmacro{eprint}}
    {}%  
  \setunit*{\addcomma\addspace}%
  \printfield{url}%
  \setunit*{\addcomma\addspace}%
  \printfield{repository}%
  \setunit*{\addcomma\addspace}%
  \printfield{swhid}%
  %
  % If only the url is present, output it regardless of bbx:url directive
  %
  \ifboolexpr{%
    not test {\iftoggle{bbx:url}}%
    and
    not test {\iffieldundef{url}}%
    and 
    test {\iffieldundef{doi}}%
    and 
    test {\iffieldundef{eprint}}%
    and 
    test {\iffieldundef{hal_id}}%
    and
    test {\iffieldundef{swhid}}%
    and
    test {\iffieldundef{repository}}%
  }%
   {\usebibmacro{swurl+urldate}}%
   {}%
}               

\newbibmacro*{swrelated}{%
  \iffieldundef{related}%
               {}%
               {\iftoggle{bbx:related}
	         {\usebibmacro{related:init}%
	         \usebibmacro{related}
		 }
	         {}%
	       }%
}               

%
% Formatting the entries
%

\DeclareBibliographyDriver{software}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \iftoggle{bbx:swlabels}{\bibstring{software}{\addspace}}{}%
  \usebibmacro{swtitleauthoreditoryear}%
  \newunit\newblock%
  \printlist{institution}
  \newunit\newblock%
  \printlist{organization}
  \newunit\newblock%
  \usebibmacro{licenses}%
  \newunit\newblock%
  \usebibmacro{swids}%
  \newunit\newblock%
  \usebibmacro{swrelated}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{softwareversion}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \iftoggle{bbx:swlabels}{\bibstring{swversion}\addspace}{}%
  \usebibmacro{swsubtitleauthoreditoryear}%
  \newunit\newblock%
  \printlist{institution}
  \newunit\newblock%
  \printlist{organization}
  \newunit\newblock%
  \usebibmacro{licenses}%
  \newunit\newblock%
  \usebibmacro{swids}%
  \newunit\newblock%
  \usebibmacro{swrelated}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{softwaremodule}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \iftoggle{bbx:swlabels}{\bibstring{swmodule}\addspace}{}%
  \usebibmacro{swsubtitleauthoreditoryear}%
  \newblock\newblock%
  \printlist{institution}
  \newunit\newblock%
  \printlist{organization}
  \newunit\newblock%
  \usebibmacro{licenses}%
  \newunit\newblock%
  \usebibmacro{swids}%
  \newunit\newblock%
  \usebibmacro{swrelated}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{codefragment}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \iftoggle{bbx:swlabels}{\bibstring{swexcerpt}\addspace}{}%
  \usebibmacro{codefragmenttitleauthoreditoryear}%
  \newunit\newblock%
  \printlist{institution}
  \newunit\newblock%
  \printlist{organization}
  \newunit\newblock%
  \usebibmacro{licenses}%
  \newunit\newblock%
  \usebibmacro{swids}%
  \newunit\newblock%
  \usebibmacro{swrelated}%
  \setunit{\bibpagerefpunct}\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}