AsciiDoc dblatex.sty with Dart support

asciidoc-dblatex.sty

%%
%% This style is derived from the docbook one.
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{asciidoc}[2008/06/05 AsciiDoc DocBook Style]
%% Just use the original package and pass the options.
\RequirePackageWithOptions{docbook}

% Sidebar is a boxed minipage that can contain verbatim.
% Changed shadow box to double box.
\renewenvironment{sidebar}[1][0.95\textwidth]{
  \hspace{0mm}\newline%
  \noindent\begin{Sbox}\begin{minipage}{#1}%
  \setlength\parskip{\medskipamount}%
}{
  \end{minipage}\end{Sbox}\doublebox{\TheSbox}%
}

% For DocBook literallayout elements, see `./dblatex/dblatex-readme.txt`.
\usepackage{alltt}


%% documentation http://ctan.sharelatex.com/tex-archive/macros/latex/contrib/listings/listings.pdf
%% example https://svn.opsi.org/filedetails.php?repname=opsidoc&path=%2Ftrunk%2Fconf%2Fdblatex%2Fasciidoc-dblatex.sty&rev=2

\definecolor{listingDartDocCommentColor}{rgb}{0.0,0.5,0.0}
\definecolor{listingDartTodoColor}{rgb}{0.6,0.0,0.0}
\definecolor{listingDartKeywordColor}{rgb}{0.1,0.0,0.5}

\lstdefinelanguage{dart} {
  morekeywords={assert,break,case,catch,class,const,continue,default,do,else,
    enum,extends,false,final,finally,for,if,in,is,new,null,rethrow,return,super,
    switch,this,throw,true,try,var,void,while,with,abstract,as,deferred,dynamic,
    export,external,factory,get,implements,import,library,operator,part,set,
    static,typedef,async,async*,sync*,await,yield},
  morekeywords=[2]{String,int,num},
  sensitive=true,
  morecomment=[l]{//},
  morecomment=[l][\color{listingDartDocCommentColor}\bfseries]{///},
  morecomment=[l][\color{listingDartTodoColor}\bfseries]{//\ TODO},
  morecomment=[l][\color{listingDartTodoColor}\bfseries]{///\ TODO},
  morecomment=[s]{/*}{*/},
  morecomment=[s][\color{listingDartTodoColor}\bfseries]{/*\ TODO}{*/},
  morestring=[b]",
  morestring=[b]',
  morestring=[b]''',
  %% doesn't work moredelim=*[s][\color{listingDartKeywordColor}\bfseries]{\{}{\}},
  %% probably a solution http://tex.stackexchange.com/questions/152829/
  extendedchars=true,
  keywordstyle={\color{listingDartKeywordColor}},
  keywordstyle=[2]{\color{blue}},
  identifierstyle=\color{black},
  breaklines={true},
}

\definecolor{gray}{rgb}{0.4,0.4,0.4}
\definecolor{darkblue}{rgb}{0.0,0.0,0.6}
\definecolor{cyan}{rgb}{0.0,0.6,0.6}

\lstdefinelanguage{XML}
{
  morestring=[b]",
  morestring=[s]{>}{<},
  morecomment=[s]{<?}{?>},
  morecomment=[s]{<!--}{-->},
  stringstyle=\color{black},
  identifierstyle=\color{darkblue},
  keywordstyle=\color{cyan},
  morekeywords={xmlns,version,type}% list your attributes here
}