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%%
%% This is file `bib2qr.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% bib2qr.dtx  (with options: `package')
%% 
%% Copyright (C) 2024 Christian Schreinemachers
%% 
%% This work may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c of this
%% license or (at your option) any later version. The latest version
%% of this license is in
%% 
%%    http://www.latex-project.org/lppl.txt
%% 
%% and version 1.3c or later is part of all distributions of LaTeX
%% version 2008-05-04 or later.
%% 
%% This work has the LPPL maintenance status `maintained'.
%% 
%% The current maintainer of this work is
%%   Christian Schreinemachers.
%% 
%% This work consists of the files
%%    bib2qr.dtx
%%    bib2qr.ins
%% and the derived files
%%    bib2qr.sty
%%    bib2qr.pdf
%% 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{bib2qr}
         [2024-07-31 v0.2 Cite BibTeX entries with QR codes]
\RequirePackage{biblatex}
\RequirePackage{ifthen}
\RequirePackage{qrcode}
\RequirePackage{xstring}
\DeclareKeys[@bibiiqr]{
  doiurlbase.store = \@bibiiqr@doiurlbase,
  doiurlbase.usage = load,
  qrdelimiter.store = \@bibiiqr@qrdelimiter,
  qrdelimiter.usage = load,
  qrversion.store = \@bibiiqr@qrversion,
  qrversion.usage = load,
  qrwidth.store = \@bibiiqr@qrwidth,
  qrwidth.usage = load,
}%
\SetKeys[@bibiiqr]{
  doiurlbase=https://doi.org/,
  qrdelimiter=\space,
  qrversion=0,
  qrwidth=2cm,
}%
\ProcessKeyOptions[@bibiiqr]\relax
\newcommand\@bibiiqr@showqr[1]{%
  \qrcode[height=\@bibiiqr@qrwidth,version=\@bibiiqr@qrversion]{#1}%
}%
\DeclareFieldFormat{@bibiiqr@fldFmtDoi}{%
  \IfBeginWith{#1}{\@bibiiqr@doiurlbase}%
    {\@bibiiqr@showqr{#1}}%
    {\@bibiiqr@showqr{\@bibiiqr@doiurlbase#1}}%
}%
\DeclareFieldFormat{@bibiiqr@fldFmtUrl}{\@bibiiqr@showqr{#1}}
\DeclareBibliographyDriver{@bibiiqr@bibDrvQR}{%
  \usebibmacro{begentry}%
  \ifboolexpr{test{\iffieldundef{doi}}}
    {%
      \ifboolexpr{test{\iffieldundef{url}}}%
      {%
        \PackageWarning{bib2qr}%
          {BibTeX entry without DOI or URL: \thefield{entrykey}}{}%
      }%
      {\printfield[@bibiiqr@fldFmtUrl]{url}}%
    }%
    {\printfield[@bibiiqr@fldFmtDoi]{doi}}%
  \usebibmacro{finentry}%
}
\DeclareCiteCommand{\qrcite}
  {\usebibmacro{prenote}}%
  {\usedriver{}{@bibiiqr@bibDrvQR}}%
  {\@bibiiqr@qrdelimiter}%
  {\usebibmacro{postnote}}%
\NewDocumentCommand{\qrfullcite}{O{}m}{%
  \par%
  \ifthenelse{\equal{#1}{noindent}}{%
    \noindent%
    \edef\@bibiiqr@mpiiwidth{\dimexpr\linewidth-\@bibiiqr@qrwidth-0.5em}%
  }{%
    \edef\@bibiiqr@mpiiwidth{%
      \dimexpr\linewidth-\parindent-\@bibiiqr@qrwidth-0.5em}%
  }%
  \begin{minipage}[t]{\@bibiiqr@qrwidth}
    \qrcite{#2}%
  \end{minipage}
  \hspace{0.5em}%
  \begin{minipage}{\@bibiiqr@mpiiwidth}
    \fullcite{#2}%
  \end{minipage}
  \par%
}%

\endinput
%%
%% End of file `bib2qr.sty'.