% standard-dw.bbx, Dominik Waßenhoven 2023

\ProvidesFile{standard-dw.bbx}[2023/03/11 v1.7b biblatex bibliography style]

\@ifpackagelater{biblatex}{2016/03/11}
  {}
  {\PackageError{biblatex-dw}
    {Outdated 'biblatex' package\MessageBreak
     Upgrade to biblatex v3.3 (2016/03/11) or later.\MessageBreak
     I found: '\csuse{ver@biblatex.sty}'.\MessageBreak
     This is a fatal error. I'm aborting now}%
     \endinput}

\RequireBibliographyStyle{standard}

\DeclareLanguageMapping{english}{english-dw}
\DeclareLanguageMapping{german}{german-dw}

\newbool{bbx:acronym}
\newbool{bbx:journumafteryear}
\newbool{bbx:journumdate}
\newbool{bbx:seriesstandard}
\newbool{bbx:seriesafteryear}
\newbool{bbx:seriesbeforeedition}
\newbool{bbx:seriesinparens}
\newbool{bbx:shorthandacro}
\newbool{bbx:shorthandinbib}
\newbool{bbx:shorthandinbibpunct}% Kontrolle, ob shorthandinbib ausgegeben wurde
\newbool{bbx:shorthandwidthbool}
\newbool{bbx:shortjournal}
\newbool{bbx:terselos}
\newbool{bbx:xref}% soll xref überhaupt verwendet werden?
\newbool{xrefidem}

\newtoggle{listofshorthands}% sind wir in der List of Shorthands?

% Schalter zum ein-/ausblenden bestimmter Felder
\newbool{bbx:pagetotal}

% Längen für Shorthand
\newlength{\bbx@shorthandwidth}
\newlength{\shorthandsep}

% Hilfsbefehl für @review
\newcommand*{\bbx@reviewparent}

\DeclareEntryOption{acronym}[true]{%
  \csuse{bool#1}{bbx:acronym}}
\DeclareEntryOption{idembib}[true]{%
  \csuse{bool#1}{bbx:idembib}}
  
\DeclareBibliographyOption{acronyms}[true]{%
  \csuse{bool#1}{bbx:shorthandacro}}
\DeclareBibliographyOption{shorthandinbib}[true]{%
  \csuse{bool#1}{bbx:shorthandinbib}}
\DeclareBibliographyOption{shorthandwidth}{%
  \setlength{\bbx@shorthandwidth}{#1}
  \setlength{\shorthandsep}{3pt plus 0.5pt minus 0.5pt}
  \renewcommand{\shorthandpunct}{\addcolon}
  \csuse{booltrue}{bbx:shorthandwidthbool}}
\DeclareBibliographyOption{shortjournal}[true]{%
  \csuse{bool#1}{bbx:shortjournal}}
\DeclareBibliographyOption{terselos}[true]{%
  \csuse{bool#1}{bbx:terselos}}
\DeclareBibliographyOption{xref}[true]{%
  \csuse{bool#1}{bbx:xref}}

% Optionen zum ein-/ausblenden bestimmter Felder
\DeclareBibliographyOption{pagetotal}[true]{%
  \csuse{bool#1}{bbx:pagetotal}}

% journalnumber=standard|afteryear|date
\newcommand{\bbx@option@journalnumber}{}
\DeclareBibliographyOption{journalnumber}{%
  \renewcommand{\bbx@option@journalnumber}{#1}}
% zu Ehren von Bernhard Tempel
\newbool{bbx:bernhard}
\DeclareBibliographyOption{bernhard}[true]{%
  \csuse{bool#1}{bbx:bernhard}}

% Option series=standard|afteryear|beforeedition
\DeclareBibliographyOption{series}[standard]{%
  \ifcsdef{bbx@opt@series@#1}
    {\csuse{bbx@opt@series@#1}}
    {\blxdw@error{%
       Invalid option 'series=#1'\MessageBreak
       Valid values are 'standard', 'afteryear', 'beforeedition'}}}
\def\bbx@opt@series@standard{%
  \global\booltrue{bbx:seriesstandard}%
  \global\boolfalse{bbx:seriesafteryear}%
  \global\boolfalse{bbx:seriesbeforeedition}}
\def\bbx@opt@series@afteryear{%
  \global\boolfalse{bbx:seriesstandard}%
  \global\booltrue{bbx:seriesafteryear}%
  \global\boolfalse{bbx:seriesbeforeedition}}
\def\bbx@opt@series@beforeedition{%
  \global\boolfalse{bbx:seriesstandard}%
  \global\boolfalse{bbx:seriesafteryear}%
  \global\booltrue{bbx:seriesbeforeedition}}
  
% Option seriesformat=standard|parens
\newcommand{\bbx@option@seriesformat}{}
\DeclareBibliographyOption{seriesformat}{%
  \renewcommand{\bbx@option@seriesformat}{#1}}
\AtBeginDocument{%
  \ifdefstring{\bbx@option@seriesformat}{parens}
    {\global\booltrue{bbx:seriesinparens}}
    {\global\boolfalse{bbx:seriesinparens}}}

\ExecuteBibliographyOptions{
  doi=false,
  eprint=false,
  isbn=false,
  journalnumber=standard,
  pagetotal=false,
  series=standard,
  seriesformat=parens,
  shorthandinbib=false,
  terselos=true,
  xref=false
}

\AtBeginDocument{%
  \ifbool{bbx:xref}
    {\ExecuteBibliographyOptions{mincrossrefs=1}}
    {}}

\DeclareBibliographyAlias{idemreference}{idemcollection}
\DeclareBibliographyAlias{xrefreference}{xrefcollection}
\DeclareBibliographyAlias{xrefidemreference}{xrefidemcollection}

%% Zeichen bei Zeitschriften:
%% -> vor 'volume' (z.B. 'Jg. ')
\newcommand*{\jourvolstring}{\addspace} 
%% -> zwischen 'volume' und 'number'
%%   (nur mit journumafteryear=true)
\newcommand*{\jourvolnumsep}{\adddot}
%% -> vor 'number' (z.B. ', Nr. ')
\newcommand*{\journumstring}{%
  \addcomma\space%
  \bibstring{number}%
  \addnbspace}
    
%% Zeichen bei Reihen:
%% -> vor 'series' (z.B. '= ')
\newcommand*{\seriespunct}{} 
%% -> vor 'number' (z.B. ', Bd. ')
\newcommand*{\sernumstring}{\addspace}

%% Reihe in Klammern (Option seriesformat)
\renewbibmacro*{series+number}{%
 \iffieldundef{series}%
   {}
   {\ifbool{bbx:seriesinparens}
    {\printtext[parens]{%
      \seriespunct%
      \printfield{series}%
      \setunit*{\sernumstring}%
      \printfield{number}}%
     \newunit}
    {\setunit{\newunitpunct\seriespunct}%
     \printfield{series}%
     \setunit*{\sernumstring}%
     \printfield{number}%
     \newunit}}}

%% Kürzere Ausgabe der List of Shorthands
\newbibmacro*{terselos}{%
  \ifbool{bbx:terselos}
    {\ifnameundef{labelname}
      {}
      {\ifnameundef{author}
         {\printnames{editor}%
          \usebibmacro{editorstringpunct}%
          \usebibmacro{editorstrg}}
         {\printnames{author}}%
       \setunit{\labelnamepunct}}%
    \iffieldundef{booktitle}
      {\usebibmacro{maintitle+title-terselos}}
      {\printfield{title}%
       \newunit\newblock
       \usebibmacro{in:}%
       \usebibmacro{maintitle+booktitle-terselos}}%
    \finentry}
    {\usedriver
      {\DeclareNameAlias{sortname}{default}}
      {\thefield{entrytype}}%
    \finentry}}
  
\newbibmacro*{maintitle+title-terselos}{%
  \iffieldsequal{maintitle}{title}
    {\clearfield{maintitle}%
     \clearfield{mainsubtitle}%
     \clearfield{maintitleaddon}}
    {\iffieldundef{maintitle}
       {}
       {\printfield{maintitle}%
      	\newunit\newblock
        \iffieldundef{volume}
      	  {}
          {\iffieldundef{volumes}
            {}
            {\printfield{volumes}%
             \setunit{\addcomma\space}}%
           \printfield{volume}%
           \printfield{part}%
           \setunit{\addcolon\space}}}}%
        \printfield{title}%
        \newunit}

\newbibmacro*{maintitle+booktitle-terselos}{%
  \iffieldundef{maintitle}
    {}
    {\printfield{maintitle}%
     \newunit\newblock
     \iffieldundef{volume}
       {}
       {\printfield{volume}%
        \printfield{part}%
        \setunit{\addcolon\space}}}%
  \printfield{booktitle}%
  \newunit}
  
\DeclareBibliographyDriver{shorthand}{%
  \toggletrue{listofshorthands}%
  \usebibmacro{terselos}}

%% Zeichensetzung nach dem Shorthand-Label
\newcommand{\shorthandpunct}{}

%% List of Shorthands: Länge der Labels einstellbar
\AtBeginDocument{%
\ifbool{bbx:shorthandwidthbool}
  {\defbibenvironment{shorthand}
    {\list
       {\printfield[shorthandwidth]{shorthand}%
        \printtext{\shorthandpunct}}
       {\setlength{\labelwidth}{\bbx@shorthandwidth}%
        \setlength{\leftmargin}{\labelwidth}%
        \setlength{\labelsep}{\shorthandsep}%
        \addtolength{\leftmargin}{\labelsep}%
        \setlength{\itemsep}{\bibitemsep}%
        \setlength{\parsep}{\bibparsep}%
        \renewcommand*{\makelabel}[1]{##1\hss}}}
    {\endlist}
    {\item}}
  {\defbibenvironment{shorthand}
    {\list
       {\printfield[shorthandwidth]{shorthand}}
       {\setlength{\labelwidth}{\shorthandwidth}%
        \setlength{\leftmargin}{\labelwidth}%
        \setlength{\labelsep}{\biblabelsep}%
        \addtolength{\leftmargin}{\labelsep}%
        \setlength{\itemsep}{\bibitemsep}%
        \setlength{\parsep}{\bibparsep}%
        \renewcommand*{\makelabel}[1]{##1\hss}}}
    {\endlist}
    {\item}}}

%% Option »shorthandinbib«:
%% Shorthands in der Bibliographie ausgeben
%% außerdem für Option »xref«:
%% Autoren in Liste schreiben für späteren Test xrefnamecheck
% \newcommand*{\@xrefauthornames}
\DeclareFieldFormat{shorthandinbib}{\mkbibbrackets{#1}}
\newcommand*{\shorthandinbibpunct}{\addspace}
\renewbibmacro*{begentry}{%
  \ifboolexpr{
    bool {bbx:shorthandinbib}
    and not
    ( test {\ifcitation}
      or
      togl {listofshorthands} )
  }
    {\iffieldundef{shorthand}
      {}
      {\printfield[shorthandinbib]{shorthand}%
       \nopunct\shorthandinbibpunct}}
    {}}
 
%% bei useeditor=true oder usetranslator=true
\newbibmacro*{useeditor+others}{%
  \ifboolexpr{
    test \ifuseeditor
    and
    not test {\ifnameundef{editor}}
  }
    {\usebibmacro{useeditor}}
    {\ifboolexpr{
       test \ifusetranslator
       and
       not test {\ifnameundef{translator}}
     }
       {\usebibmacro{usetranslator}}
       {}}}
       
\newbibmacro*{useeditor}{%
  \ifnamesequal{author}{editor}
    {\ifbool{bbx:edbyidem}
      {\midsentence*\bibstring[\mkidem]{idem\thefield{gender}}%
       \addspace}%
      {\printnames[byeditor]{editor}%
       \usebibmacro{editorstringpunct}%
       \savefield{fullhash}{\bbx@lasthash}}}%
    {\printnames[byeditor]{editor}%
     \usebibmacro{editorstringpunct}%
     \savefield{fullhash}{\bbx@lasthash}}%
   \usebibmacro{editorstrg}%
   \clearname{editor}%
   \setunit{\labelnamepunct}\newblock}

\newbibmacro*{usetranslator}{%
  \ifnamesequal{author}{translator}
    {\ifbool{bbx:edbyidem}
      {\midsentence*\bibstring[\mkidem]{idem\thefield{gender}}%
       \addspace}%
      {\printnames[byeditor]{translator}%
       \usebibmacro{editorstringpunct}%
       \savefield{fullhash}{\bbx@lasthash}}}%
    {\printnames[byeditor]{translator}%
     \usebibmacro{editorstringpunct}%
     \savefield{fullhash}{\bbx@lasthash}}%
   \usebibmacro{translatorstrg}%
   \clearname{translator}%
   \setunit{\labelnamepunct}\newblock}

%% Wenn 'volumes' und 'volume' angegeben sind,
%% 'volumes' immer vor 'volume' ausgeben
\newbibmacro*{volumes+volume+part}{%
  \iffieldundef{maintitle}
    {\iffieldundef{volumes}
      {}
      {\printfield{volumes}%
       \newunit}%
    \iffieldundef{volume}
      {}
      {\printfield{volume}%
       \printfield{part}%
       \setunit{\addcolon\space}}}
    {\iffieldundef{volume}% Wenn es einen maintitle gibt, 
                          % aber kein 'volume'-Feld, wurde
                          % 'volumes' noch nicht ausgegeben!
      {\printfield{volumes}}
      {}}}

\renewbibmacro*{maintitle+title}{%
  \iffieldsequal{maintitle}{title}
    {\clearfield{maintitle}%
     \clearfield{mainsubtitle}%
     \clearfield{maintitleaddon}}
    {\iffieldundef{maintitle}
       {}
       {\usebibmacro{maintitle}%
      	\newunit\newblock
        \iffieldundef{volume}
      	  {}
          {\iffieldundef{volumes}
            {}
            {\printfield{volumes}%
             \setunit{\addcomma\space}}%
           \printfield{volume}%
           \printfield{part}%
           \setunit{\addcolon\space}}}}%
        \usebibmacro{title}%
        \newunit}

%% Test, ob 'volume' vorhanden ist (bei xref parent)
\newbibmacro*{xrefvolumecheck}{%
  \ifbool{bbx:xref}
    {\iffieldundef{volume}
      {\xifinlistcs{\strfield{entrykey}}{novolume@xrefparent}
        {}% schon in Liste vorhanden, dann passiert nichts
        {\listcsxadd{novolume@xrefparent}{\thefield{entrykey}}}}%
      {}}
    {}}

%% Test, ob 'citedas=true' gesetzt ist (bei xref parent)
\newbibmacro*{xrefcitedascheck}{%
  \ifbool{bbx:xref}
    {\ifbool{cbx:citedas}
      {\xifinlistcs{\strfield{entrykey}}{citedas@xrefparent}
        {}% schon in Liste vorhanden, dann passiert nichts
        {\listcsxadd{citedas@xrefparent}{\thefield{entrykey}}}}%
      {}}
    {}}

%% Tests werden bei 'xref=true' in @book, @collection,
%% @proceedings und @reference ausgeführt
\AtDataInput[book]{%
  \usebibmacro{xrefvolumecheck}%
  \usebibmacro{xrefcitedascheck}}
\AtDataInput[collection]{%
  \usebibmacro{xrefvolumecheck}%
  \usebibmacro{xrefcitedascheck}}
\AtDataInput[proceedings]{%
  \usebibmacro{xrefvolumecheck}%
  \usebibmacro{xrefcitedascheck}}
\AtDataInput[reference]{%
  \usebibmacro{xrefvolumecheck}%
  \usebibmacro{xrefcitedascheck}}

%% 'volume' bei xref-child ausgeben, falls
%% in xref-parent nicht definiert 
\newbibmacro*{xrefvolume}{%
  \xifinlistcs{\strfield{xref}}{novolume@xrefparent}
    {\newunit
     \printfield{volume}%
     \iffieldxref{year}% wenn 'year' bei child und parent gleich
       {}
       {\setunit{\addcomma\space}%
        \iflistxref{location}% wenn 'location' bei child und parent gleich
         {}
         {\printlist{location}%
          \setunit*{\addspace}}%  
        \usebibmacro{date}}}
    {}}%

% bei @inreference: booktitle, vol. (year)
\newbibmacro*{xrefvolume:inreference}{%
  \xifinlistcs{\strfield{xref}}{novolume@xrefparent}
    {\iffieldundef{volume}
      {}
      {\ifbibliography
        {\setunit{\addspace}}
        {\xifinlistcs{\strfield{xref}}{citedas@xrefparent}
          {\ifbool{cbx:xrefparent:firstcite}
            {\newunit
             \printtext{\bibstring{volume}\addspace}}
            {\setunit{\addspace}}}
          {\newunit
           \printtext{\bibstring{volume}\addspace}}}%
       \printfield{volume}%
       \iffieldxref{year}% wenn 'year' bei child und parent gleich
         {}
         {\setunit{\addspace}%
          \printfield[parens]{year}}}}
    {}}

%% 'volume' und 'year' ausgeben bei @inreference
\newbibmacro*{volumes+volume+part+year}{%
  \iffieldundef{maintitle}
    {\iffieldundef{volumes}
      {}
      {\printfield{volumes}%
       \newunit}%
    \iffieldundef{volume}
      {}
      {\setunit{\addspace}%
       \printfield{volume}%
       \printfield{part}}%
    \iffieldundef{year}
      {}
      {\setunit{\addspace}%
       \printfield[parens]{year}%
       \setunit{\addspace}}}
    {\iffieldundef{volume}% Wenn es einen maintitle gibt, 
                          % aber kein 'volume'-Feld, wurde
                          % 'volumes' noch nicht ausgegeben!
      {\printfield{volumes}}
      {}}}
    
%% 'addendum' bei xref-child ausgeben
\newbibmacro*{xrefaddendum}{%
  \newunit
  \printfield{addendum}}%
    
%% Option 'shortjournal=true|false'
\renewbibmacro*{journal}{%
  \ifbool{bbx:shortjournal}
    {\iffieldundef{shortjournal}
      {\usebibmacro{journal:normal}}
      {\printfield{shortjournal}}}
    {\usebibmacro{journal:normal}}}

\newbibmacro*{journal:normal}{% vollständige, 'normale' Ausgabe eines Zeitschriftentitels
  \iffieldundef{journaltitle}
    {}
    {\printtext[journaltitle]{%
       \printfield[titlecase]{journaltitle}%
       \setunit{\subtitlepunct}%
       \printfield[titlecase]{journalsubtitle}}}}

%% Option 'journalnumber=standard|afteryear|date' 
\AtBeginDocument{%
  \ifbool{bbx:bernhard}% Bernhard geht vor (c;
    {\global\boolfalse{bbx:journumafteryear}%
     \global\booltrue{bbx:journumdate}}
    {\ifdefstring{\bbx@option@journalnumber}{afteryear}
      {\global\booltrue{bbx:journumafteryear}%
       \global\boolfalse{bbx:journumdate}}
      {\ifdefstring{\bbx@option@journalnumber}{date}
        {\global\boolfalse{bbx:journumafteryear}%
         \global\booltrue{bbx:journumdate}}
        {\global\boolfalse{bbx:journumafteryear}
         \global\boolfalse{bbx:journumdate}}}}}

\renewbibmacro*{journal+issuetitle}{%
  \usebibmacro{useeditor+others}%
  \usebibmacro{journal}%
  \setunit*{\addspace}%
  \iffieldundef{series}
    {}
    {\newunit
     \printfield{series}%
     \setunit{\addspace}}%
  \iffieldundef{volume}
    {}
    {\setunit{\jourvolstring}%
     \printfield{volume}}%
  % ab hier Unterscheidung nach standard|afteryear|date
  \ifbool{bbx:journumdate}
    {\usebibmacro{journal+issuetitle+date}}
    {\ifbool{bbx:journumafteryear}
      {\usebibmacro{journal+issuetitle+afteryear}}
      {\usebibmacro{journal+issuetitle+standard}}}}

% journalnumber=standard 
\newbibmacro*{journal+issuetitle+standard}{%
  \iffieldundef{volume}
    {\iffieldundef{number}
      {}
      {\blxdw@warning{%
        Field 'number' set, but 'volume' is empty
        \MessageBreak at entry '\abx@field@entrykey'.
        The output might not \MessageBreak be correct}}}
    {\setunit{\jourvolnumsep}%
     \printfield{number}}%
  \setunit{\addcomma\space}%
  \printfield{eid}%
  \setunit{\addspace}%
  \iffieldundef{volume}
    {\iffieldundef{month}
      {}
      {\setunit{\addcomma\space}}%
     \usebibmacro{issue+date}}
    {\printtext[parens]{\usebibmacro{issue+date}}}%
  \newunit\newblock
  \usebibmacro{issue}%
  \newunit
  \usebibmacro{byeditor+others}%
  \newunit}

% journalnumber=afteryear 
\newbibmacro*{journal+issuetitle+afteryear}{%
  \setunit{\addcomma\space}%
  \printfield{eid}%
  \setunit{\addspace}%
  \iffieldundef{volume}
    {\iffieldundef{month}
      {}
      {\setunit{\addcomma\space}}%
     \usebibmacro{issue+date}%
     \iffieldundef{number}
      {}
      {\setunit*{\addcomma\space\journumstring}%
       \printfield{number}}}%
    {\printtext[parens]{\usebibmacro{issue+date}}%
     \iffieldundef{number}
       {}
       {\setunit*{\journumstring}%
        \printfield{number}}}%
  \newunit\newblock
  \usebibmacro{issue}%
  \newunit
  \usebibmacro{ifuse:byeditor+others}%
  \newunit}

% journalnumber=date 
\newbibmacro*{journal+issuetitle+date}{%
  \setunit{\addcomma\space}%
  \printfield{eid}%
  \setunit{\addspace}%
  \usebibmacro{issue+date+number}%
  \newunit\newblock
  \usebibmacro{issue}%
  \newunit
  \usebibmacro{ifuse:byeditor+others}%
  \newunit}

\renewbibmacro*{issue+date}{% Klammern entfernt
  \iffieldundef{issue}
    {\printdate}
    {\printfield{issue}%
     \setunit{\addspace}%
     \printfield{year}}%
  \newunit}

\newbibmacro*{issue+date+number}{%
  \iffieldundef{number}
    {\iffieldundef{issue}%
      {\iffieldundef{month}
        {\printtext[parens]{\printdate}}
        {\setunit{\addcomma\space}%
         \printdate}}%
	    {\iffieldundef{month}% mit definiertem Feld issue
	      {\printtext[parens]{\printdate}%
          \setunit{\addspace}%
          \printfield{issue}}%
         {\setunit{\addcomma\space}%
          \printdate}}}%
    {\iffieldundef{issue}% mit definiertem Feld number
      {\iffieldundef{month}
        {\setunit{\addspace}%
         \printtext[parens]{\printdate}%
         \setunit{\addspace}%
         \printfield{number}}
        {\iffieldundef{day}
          {\setunit{\addcomma\space\journumstring}%
           \printfield{number}%
           \setunit{\addcomma\space}%
           \printdate}%
          {\setunit{\addcomma\space\journumstring}%
           \printfield{number}%
           \setunit{\addcomma\space}%
           \printdate}}}%
	    {\iffieldundef{month}% mit definiertem Feld issue
	      {\printtext[parens]{\printdate}%
         \setunit{\addspace}%
         \printfield{number}%
         \setunit{\addspace}%
         \printtext[parens]{\printfield{issue}}}%
        {\iffieldundef{day}%
          {\setunit{\addspace\journumstring}%
           \printfield{number}%
           \setunit{\addcomma\space}%
           \printdate
           \setunit{\addcomma\space}%
           \printfield{issue}}%
          {\setunit{\addcomma\space\journumstring}%
           \printfield{number}%
           \setunit{\addcomma\space}%
           \printdate%
           \setunit{\addcomma\space}%
           \printfield{issue}}}}}%
  \newunit}

%% pageref: space statt \newunit, da sonst Komma vor Klammer steht
\renewbibmacro*{pageref}{%
  \iflistundef{pageref}
    {}
    {\setunit{\addspace}%
     \printtext[parens]{%
       \ifnumgreater{\value{pageref}}{1}
         {\bibstring{backrefpages}\ppspace}
	 {\bibstring{backrefpage}\ppspace}%
       \printlist[pageref][-\value{listtotal}]{pageref}}}}

\renewbibmacro*{note+pages}{%
  \printfield{note}%
  \ifbool{cbx:rpcited}
    {}
    {\setunit{\bibpagespunct}%
     \printfield{pages}}%
  \newunit}
       
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
%%%%% Bibmacros für Code, der im Bibliography   %%%%% 
%%%%% Driver aufgerufen wird, wenn KEIN xref    %%%%% 
%%%%% vorhanden ist.                            %%%%% 
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
\newbibmacro{noxref:inbook}{%
  \usebibmacro{bybookauthor}%
  \setunit{\labelnamepunct}\newblock%
  \usebibmacro{maintitle+booktitle}%
  \newunit
  \usebibmacro{byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}}%

\newbibmacro{noxref:incollection}{%
  \usebibmacro{useeditor+others}%
  \usebibmacro{maintitle+booktitle}%
  \newunit
  \usebibmacro{ifuse:byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}}

\newbibmacro{noxref:inproceedings}{%
  \usebibmacro{useeditor+others}%
  \usebibmacro{maintitle+booktitle}%
  \newunit\newblock
  \usebibmacro{event+venue+date}%
  \newunit\newblock
  \usebibmacro{ifuse:byeditor+others}%
  \newunit\newblock
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}}%		 
       
\newbibmacro{noxref:inreference}{%
  \usebibmacro{useeditor+others}%
  \usebibmacro{maintitle+booktitle}%
  \newunit
  \usebibmacro{ifuse:byeditor+others}%
  \newunit\newblock
  \usebibmacro{edition}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{volumes+volume+part+year}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}}

%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
%%%%% Bibliography Driver     %%%%%
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
\DeclareBibliographyDriver{article}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{bytranslator+others}%
  \newunit\newblock
  \printfield{version}%
  \newunit\newblock
  \usebibmacro{in:}%
  \usebibmacro{journal+issuetitle}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \usebibmacro{note+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{issn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}
  
\DeclareBibliographyDriver{book}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{booklet}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \printfield{howpublished}%
  \newunit\newblock
  \printfield{type}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{location+date}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}
    
\DeclareBibliographyDriver{collection}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{editor+others/translator+others}%
     \setunit*{\labelnamepunct}}%  
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\newbool{xref:inbook}%
\DeclareBibliographyDriver{inbook}{%
  \booltrue{xref:inbook}% the child is an inbook
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit\newblock
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{in:}%
  \usebibmacro{authauthxrefcheck}%
  \ifbool{cbx:authauthxref}
    {\booltrue{xrefidem}}
    {\boolfalse{xrefidem}}%
  \ifbool{bbx:xref}
  	{\iffieldundef{xref}%
      {% Code, wenn kein xref vorhanden
  		 \usebibmacro{noxref:inbook}}%
  	  {\printtext{\bbx@xref{\thefield{xref}}}% xref
       \usebibmacro{xrefvolume}%
       \usebibmacro{pages}%
       \usebibmacro{xrefaddendum}}}%
    {\usebibmacro{noxref:inbook}}% bei xref=false
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{incollection}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{in:}%
  \usebibmacro{authedxrefcheck}%
  \ifbool{cbx:authedxref}
    {\booltrue{xrefidem}}
    {\boolfalse{xrefidem}}%
  \ifbool{bbx:xref}
    {\iffieldundef{xref}
  	  {% Code, wenn kein xref vorhanden
       \usebibmacro{noxref:incollection}}
  	  {\printtext{\bbx@xref{\thefield{xref}}}% xref
       \usebibmacro{xrefvolume}%
       \usebibmacro{pages}%
       \usebibmacro{xrefaddendum}}}%
    {\usebibmacro{noxref:incollection}}% bei xref=false
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{inproceedings}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{in:}%
  \ifboolexpr{
    test \ifuseeditor
    or
    test \ifusetranslator
  }
    {\ifnamexref{labelname}%
	    {\booltrue{xrefidem}}%
	    {\boolfalse{xrefidem}}}
    {\usebibmacro{authedxrefcheck}%
     \ifbool{cbx:authedxref}
      {\booltrue{xrefidem}}
      {\boolfalse{xrefidem}}}%
	\ifbool{bbx:xref}
  	{\iffieldundef{xref}%
  	  {% Code, wenn kein xref vorhanden
  		  \usebibmacro{noxref:inproceedings}}%
  	  {\printtext{\bbx@xref{\thefield{xref}}}% xref
       \usebibmacro{xrefvolume}%
  	   \usebibmacro{pages}%
       \usebibmacro{xrefaddendum}}}%
    {\usebibmacro{noxref:inproceedings}}% bei xref=false
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{inreference}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{in:}%
  \ifboolexpr{
    test \ifuseeditor
    or
    test \ifusetranslator
  }
    {\ifnamexref{labelname}%
	    {\booltrue{xrefidem}}%
	    {\boolfalse{xrefidem}}}
    {\usebibmacro{authedxrefcheck}%
     \ifbool{cbx:authedxref}
      {\booltrue{xrefidem}}
      {\boolfalse{xrefidem}}}%
  \ifbool{bbx:xref}
    {\iffieldundef{xref}%
  	  {% Code, wenn kein xref vorhanden
       \usebibmacro{noxref:inreference}}%
  	  {\ifentryseen{\thefield{xref}}
        {\boolfalse{cbx:xrefparent:firstcite}}% parent wurde schon zitiert
        {\booltrue{cbx:xrefparent:firstcite}}% parent wurde noch nicht zitiert
       \printtext{\bbx@xref{\thefield{xref}}}% xref
       \usebibmacro{xrefvolume:inreference}%
       \usebibmacro{pages}%
       \usebibmacro{xrefaddendum}}}%
    {\usebibmacro{noxref:inreference}}% bei xref=false
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{manual}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{type}%
  \newunit
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{misc}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor}%
  \newunit\newblock
  \printfield{howpublished}%
  \newunit\newblock
  \printfield{type}%
  \newunit
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit\newblock
  \printlist{location}%
  \newunit\newblock
  \usebibmacro{date}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{online}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \usebibmacro{byeditor}%
  \newunit\newblock
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit\newblock
  \usebibmacro{date}%
  \newunit\newblock
  \iftoggle{bbx:eprint}
    {\usebibmacro{eprint}}
    {}%
  \usebibmacro{url+urldate}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{patent}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \printfield{type}%
  \setunit*{\addspace}%
  \printfield{number}%
  \iflistundef{location}
    {}
    {\setunit*{\addspace}%
     \printtext[parens]{%
       \printlist[][-\value{listtotal}]{location}}}%
  \newunit\newblock
  \usebibmacro{byholder}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{date}%
  \newunit\newblock
  \iftoggle{bbx:url}
    {\usebibmacro{url+urldate}}
    {}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{periodical}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title+issuetitle}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byeditor}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{issn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{proceedings}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{editor+others/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{event+venue+date}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{report}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \printfield{type}%
  \setunit*{\addspace}%
  \printfield{number}%
  \newunit\newblock
  \printfield{version}%
  \newunit
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{institution+location+date}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isrn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{review}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
	\iffieldundef{xref}
	  {% Code, wenn kein xref vorhanden
      \usebibmacro{title}%
      \newunit
      \printlist{language}%
      \newunit\newblock
      \usebibmacro{byauthor}%
      \newunit\newblock
      \usebibmacro{bytranslator+others}%
      \newunit\newblock
      \printfield{version}}
	  {% Code, wenn xref vorhanden
      \savefield{xref}{\bbx@reviewparent}%
      \printtext[review]{\bbx@review{\thefield{xref}}}}%
  \newunit\newblock
  \usebibmacro{in:}%
  \usebibmacro{journal+issuetitle}%
  \newunit\newblock
  \usebibmacro{byeditor+others}%
  \newunit\newblock
  \usebibmacro{note+pages}%
  \newunit\newblock
  \iftoggle{bbx:isbn}
    {\printfield{issn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{thesis}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \printfield{type}%
  \newunit
  \usebibmacro{institution+location+date}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{unpublished}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifbool{cbx:idemfull}
    {}
    {\usebibmacro{author/translator+others}%
     \ifnameundef{labelname}
       {}
       {\setunit{\labelnamepunct}\newblock}}%
  \usebibmacro{title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \printfield{howpublished}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{date}%
  \newunit\newblock
  \iftoggle{bbx:url}
    {\usebibmacro{url+urldate}}
    {}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%
%%%%% Die folgenden 'xref'-BibliographyDriver sind    %%%%% 
%%%%% nötig, damit bei Erstzitaten mit xref die       %%%%% 
%%%%% Option useeditor=true beachtet wird.            %%%%% 
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%

\DeclareBibliographyDriver{xrefbook}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifboolexpr{
    test \ifuseauthor or test \ifuseeditor or test \ifusetranslator}
    {\usebibmacro{author/editor+others/translator+others}%
     \setunit{\labelnamepunct}\newblock}
    {}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \ifbool{xref:inbook}% child is an @inbook entry
    {\usebibmacro{byeditor+others}}
    {\usebibmacro{ifuse:byeditor+others}}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{xrefcollection}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifboolexpr{
    test \ifuseeditor or test \ifusetranslator}
    {\usebibmacro{editor+others/translator+others}%
     \setunit{\labelnamepunct}\newblock}
    {}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{ifuse:byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{xrefproceedings}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \ifboolexpr{
    test \ifuseeditor or test \ifusetranslator}
    {\usebibmacro{editor+others/translator+others}%
     \setunit{\labelnamepunct}\newblock}
    {}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{event+venue+date}%
  \newunit\newblock
  \usebibmacro{ifuse:byeditor+others}%
  \newunit\newblock
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%
%%%%% Die folgenden 'xrefidem'-BibliographyDriver     %%%%% 
%%%%% sind nötig damit bei Erstzitaten mit demselben  %%%%% 
%%%%% Autor und xref ein Vollzitat erfolgen kann,     %%%%% 
%%%%% ohne den Autor des referenzierten Werkes (der   %%%%% 
%%%%% durch 'idem' ersetzt wird) auszugeben.          %%%%% 
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%%

\DeclareBibliographyDriver{xrefidembook}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \printtext{\bibstring[\mkidem]{idem\thefield{gender}}}%
  \setunit{\nametitledelim}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{byauthor}%
  \newunit\newblock
  \ifbool{xref:inbook}% child is an @inbook entry
    {\usebibmacro{byeditor+others}}
    {\usebibmacro{ifuse:byeditor+others}}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{xrefidemcollection}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{ifuse:xrefidem}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{ifuse:byeditor+others}%
  \ifbool{bbx:seriesbeforeedition}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{edition}%
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

\DeclareBibliographyDriver{xrefidemproceedings}{%
  \usebibmacro{bibindex}%
  \usebibmacro{begentry}%
  \usebibmacro{ifuse:xrefidem}%
  \usebibmacro{maintitle+title}%
  \newunit
  \printlist{language}%
  \newunit\newblock
  \usebibmacro{event+venue+date}%
  \newunit\newblock
  \usebibmacro{ifuse:byeditor+others}%
  \newunit\newblock
  \usebibmacro{volumes+volume+part}%
  \ifbool{bbx:seriesstandard}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \printfield{note}%
  \newunit\newblock
  \printlist{organization}%
  \newunit
  \usebibmacro{publisher+location+date}%
  \ifbool{bbx:seriesafteryear}
    {\setunit{\addspace}%
     \usebibmacro{series+number}}
    {}%
  \newunit\newblock
  \usebibmacro{chapter+pages}%
  \newunit
  \ifbool{bbx:pagetotal}
    {\printfield{pagetotal}%
     \newunit\newblock}
    {}%
  \iftoggle{bbx:isbn}
    {\printfield{isbn}}
    {}%
  \newunit\newblock
  \usebibmacro{doi+eprint+url}%
  \newunit\newblock
  \usebibmacro{addendum+pubstate}%
  \newunit\newblock
  \usebibmacro{pageref}%
  \usebibmacro{finentry}}

%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
%%%%%    Warnungen und Fehlermeldungen    %%%%%
%%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% %%%%% 
\protected\def\blxdw@error#1{%
  \begingroup
  \blx@safe@actives
  \PackageError{biblatex-dw}{#1}%
  \endgroup}
  
\protected\def\blxdw@warning#1{%
  \begingroup
  \blx@safe@actives
  \PackageWarning{biblatex-dw}{#1\blxdw@noline}%
  \endgroup}
\protected\def\blxdw@warning@noline#1{%
  \begingroup
  \blx@safe@actives
  \PackageWarning{biblatex-dw}{#1\@gobble}%
  \endgroup}
\protected\def\blxdw@warning@entry#1{%
  \ifundef\abx@field@entrykey
    {\blxdw@warning{#1}}
    {\blxdw@warning{#1\MessageBreak at entry '\abx@field@entrykey'}}}
\let\blxdw@noline\@gobble

\AtBeginDocument{%
  \ifdefstring{\bbx@origfieldsformat}{punct}
    {}
    {\ifdefstring{\bbx@origfieldsformat}{parens}
      {}
      {\ifdefstring{\bbx@origfieldsformat}{brackets}
        {}
        {\blxdw@warning@noline{%
           Unknown value for option 'origfieldsformat'.\MessageBreak
           Option 'origfieldsformat=punct' used instead}}}}%
  \ifdefstring{\bbx@option@journalnumber}{standard}
    {}
    {\ifdefstring{\bbx@option@journalnumber}{afteryear}
      {}
      {\ifdefstring{\bbx@option@journalnumber}{date}
        {}
        {\blxdw@warning@noline{%
           Unknown value for option 'journalnumber'.\MessageBreak
           Option 'journalnumber=standard' used instead}}}}%
  \iftoggle{blx@useeditor}
    {\ifbool{cbx:omiteditor}
      {\blxdw@warning@noline{%
         Option 'omiteditor' cannot be used\MessageBreak
         together with option 'useeditor=true'.\MessageBreak
         Thus, 'omiteditor' is ignored}}
      {}}%
    {}%
  \ifdefstring{\bbx@option@seriesformat}{standard}
    {}
    {\ifdefstring{\bbx@option@seriesformat}{parens}
      {}
      {\blxdw@warning@noline{%
         Unknown value for option 'seriesformat'.\MessageBreak
         Option 'seriesformat=standard' used instead}}}%
}

\endinput