% \iffalse meta-comment
%
% Copyright (C) 2016-2020 by Josef Friedrich <josef@friedrich.rocks>
% ----------------------------------------------------------------------
% This work may be distributed and/or modified under the conditions of
% the LaTeX Project Public License, either version 1.3 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 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Josef Friedrich.
%
% This work consists of the files nodetree.dtx and nodetree.ins
% and the derived filebase nodetree.sty and nodetree.lua.
%
% \fi
%
% \iffalse
%<*driver>
\ProvidesFile{nodetree.dtx}
%</driver>
%<package>\NeedsTeXFormat{LaTeX2e}[1999/12/01]
%<package>\ProvidesPackage{nodetree}
%<*package>
    [2020/10/23 v2.2 Visualize node lists in a tree view]
%</package>
% \fi
%
% \CheckSum{0}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}
%
%
% \changes{v0.1}{2015/06/16}{Converted to DTX file}
% \changes{v1.0}{2016/07/07}{Inital release}
% \changes{v1.1}{2016/07/13}{Fix the registration of same callbacks}
% \changes{v1.2}{2016/07/18}{Fix difference between README.md in the upload and that from nodetree.dtx}
% \changes{v2.0}{2020/05/29}{
%  * Switch from lowercase macro names to PascalCase names for better readability.
%  * The Lua code is no longer developed inside the DTX file, instead in a separate file named nodetree.lua.
%  * Add a sub package named nodetree-embed.sty for embedding nodetree views into a \LaTeX{} document.
%  * Add support for new node subtype names.
%  * Add support for a new Lua\TeX{} node callback.
%  * Add support for node properties.
%  * Less verbose representation of node attributes.
%  * Minor tree output adjustments.
% }
% \changes{v2.1}{2020/10/03}{
%  * Make the package compatible with the Harfbuzz mode of the luaotfload fontloader.
%  * Print node properties of copied nodes.
% }
% \changes{v2.2}{2020/10/23}{
%  *  Fix unavailable library error (utf8 not in Lua5.1)
% }
% \DoNotIndex{\newcommand,\newenvironment,\def,\directlua}
%
% \StopEventually{}
% \pagebreak
% \section{Implementation}
%
% \iffalse
%<*tex>
% \fi
% \MacroTopsep = 10pt plus 2pt minus 2pt
% \MacrocodeTopsep = 10pt plus 1.2pt minus 1pt
% \makeatletter
% \c@CodelineNo 25 \relax
% \makeatother
%
% \subsection{The file \tt{nodetree.tex}}
%
%    \begin{macrocode}
\directlua{
  nodetree = require('nodetree')
}
%    \end{macrocode}
%
% \begin{macro}{\NodetreeSetOption}
%    \begin{macrocode}
\def\NodetreeSetOption[#1]#2{
  \directlua{
    nodetree.set_option('#1', '#2')
  }
}
\let\nodetreeoption\NodetreeSetOption
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeResetOption}
%    \begin{macrocode}
\def\NodetreeResetOption#1{
  \NodetreeSetOption[#1]{%
    \directlua{
      tex.print(nodetree.get_default_option('#1'))
    }%
  }%
}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeReset}
%    \begin{macrocode}
\def\NodetreeReset{
  \NodetreeResetOption{callback}
  \NodetreeResetOption{channel}
  \NodetreeResetOption{color}
  \NodetreeResetOption{decimalplaces}
  \NodetreeResetOption{unit}
  \NodetreeResetOption{verbosity}
}
\let\nodetreereset\NodetreeReset
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeRegisterCallback}
%    \begin{macrocode}
\def\NodetreeRegisterCallback#1{
  \directlua{
    nodetree.set_option('callback', '#1')
    nodetree.register_callbacks()
  }
}
\let\nodetreeregister\NodetreeRegisterCallback
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeUnregisterCallback}
%    \begin{macrocode}
\def\NodetreeUnregisterCallback#1{
  \directlua{
    nodetree.set_option('callback', '#1')
    nodetree.unregister_callbacks()
  }
}
\let\nodetreeunregister\NodetreeUnregisterCallback
%    \end{macrocode}
% \end{macro}
%
% \iffalse
%</tex>
%<*package>
% \fi
% \makeatletter
% \c@CodelineNo 25 \relax
% \makeatother
%
% \subsection{The file \tt{nodetree.sty}}
%
%    \begin{macrocode}
\input{nodetree}
%    \end{macrocode}
%
%    \begin{macrocode}
\RequirePackage{kvoptions}
%    \end{macrocode}
%
%    \begin{macrocode}
\SetupKeyvalOptions{
  family=NT,
  prefix=NTK@
}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[term]{channel}
\define@key{NT}{channel}[]{\NodetreeSetOption[channel]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[postlinebreak]{callback}
\define@key{NT}{callback}[]{\NodetreeSetOption[callback]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{verbosity}
\define@key{NT}{verbosity}[]{\NodetreeSetOption[verbosity]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[colored]{color}
\define@key{NT}{color}[]{\NodetreeSetOption[color]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{unit}
\define@key{NT}{unit}[]{\NodetreeSetOption[unit]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{decimalplaces}
\define@key{NT}{decimalplaces}[]{\NodetreeSetOption[decimalplaces]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\ProcessKeyvalOptions{NT}
\directlua{
  nodetree.register_callbacks()
}
%    \end{macrocode}
%
% \begin{macro}{\NodetreeSet}
%    \begin{macrocode}
\newcommand{\NodetreeSet}[1]{%
  \setkeys{NT}{#1}%
}
\let\nodetreeset\NodetreeSet
%    \end{macrocode}
% \end{macro}
%
% \iffalse
%</package>
%<*packageembed>
% \fi
%    \begin{macrocode}
\NeedsTeXFormat{LaTeX2e}[1994/06/01]
\ProvidesPackage{nodetree-embed}
  [2020/10/23 v2.2 Embed node trees into a LaTeX document]
%    \end{macrocode}
%
%    \begin{macrocode}
\RequirePackage{xcolor,mdframed,expl3,xparse,fontspec}
%    \end{macrocode}
%
%    \begin{macrocode}
\input{nodetree}
%    \end{macrocode}
%
%    \begin{macrocode}
\RequirePackage{kvoptions}
\SetupKeyvalOptions{
  family=NTE,
  prefix=NTEK@
}
%    \end{macrocode}
%
%    \begin{macrocode}
\directlua{
  nodetree = require('nodetree')
  nodetree.check_shell_escape()
}
%    \end{macrocode}
%
%    \begin{macrocode}
\define@key{NTE}{callback}[]{\NodetreeSetOption[callback]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{verbosity}
\define@key{NTE}{verbosity}[]{\NodetreeSetOption[verbosity]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[colored]{color}
\define@key{NTE}{color}[]{\NodetreeSetOption[color]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{unit}
\define@key{NTE}{unit}[]{\NodetreeSetOption[unit]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[1]{decimalplaces}
\define@key{NTE}{decimalplaces}[]{\NodetreeSetOption[decimalplaces]{#1}}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[monokaisoda]{theme}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[dark]{thememode}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[Ubuntu Mono]{font}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareStringOption[\footnotesize]{fontsize}
%    \end{macrocode}
%
%    \begin{macrocode}
\DeclareBoolOption{showmarkup}
%    \end{macrocode}
%
%    \begin{macrocode}
\ProcessKeyvalOptions{NTE}
%    \end{macrocode}
%
% \begin{macro}{\NTE@colors}
%    \begin{macrocode}
\ExplSyntaxOn
\def\NTE@colors{
  \str_case_e:nn{\NTEK@theme}{
    {bwdark}{
      \definecolor{NTEblack}{gray}{0}
      \definecolor{NTEred}{gray}{1}
      \definecolor{NTEgreen}{gray}{1}
      \definecolor{NTEyellow}{gray}{1}
      \definecolor{NTEblue}{gray}{1}
      \definecolor{NTEmagenta}{gray}{1}
      \definecolor{NTEcyan}{gray}{1}
      \definecolor{NTEwhite}{gray}{1}
      \definecolor{NTEblackbright}{gray}{0}
      \definecolor{NTEredbright}{gray}{1}
      \definecolor{NTEgreenbright}{gray}{1}
      \definecolor{NTEyellowbright}{gray}{1}
      \definecolor{NTEbluebright}{gray}{1}
      \definecolor{NTEmagentabright}{gray}{1}
      \definecolor{NTEcyanbright}{gray}{1}
      \definecolor{NTEwhitebright}{gray}{1}
    }
    {bwlight}{
      \definecolor{NTEblack}{gray}{0}
      \definecolor{NTEred}{gray}{0}
      \definecolor{NTEgreen}{gray}{0}
      \definecolor{NTEyellow}{gray}{0}
      \definecolor{NTEblue}{gray}{0}
      \definecolor{NTEmagenta}{gray}{0}
      \definecolor{NTEcyan}{gray}{0}
      \definecolor{NTEwhite}{gray}{1}
      \definecolor{NTEblackbright}{gray}{0}
      \definecolor{NTEredbright}{gray}{0}
      \definecolor{NTEgreenbright}{gray}{0}
      \definecolor{NTEyellowbright}{gray}{0}
      \definecolor{NTEbluebright}{gray}{0}
      \definecolor{NTEmagentabright}{gray}{0}
      \definecolor{NTEcyanbright}{gray}{0}
      \definecolor{NTEwhitebright}{gray}{1}
    }
    {monokaisoda}{
      \definecolor{NTEblack}{HTML}{1a1a1a}
      \definecolor{NTEred}{HTML}{f4005f}
      \definecolor{NTEgreen}{HTML}{98e024}
      \definecolor{NTEyellow}{HTML}{fa8419}
      \definecolor{NTEblue}{HTML}{9d65ff}
      \definecolor{NTEmagenta}{HTML}{f4005f}
      \definecolor{NTEcyan}{HTML}{58d1eb}
      \definecolor{NTEwhite}{HTML}{c4c5b5}
      \definecolor{NTEblackbright}{HTML}{625e4c}
      \definecolor{NTEredbright}{HTML}{f4005f}
      \definecolor{NTEgreenbright}{HTML}{98e024}
      \definecolor{NTEyellowbright}{HTML}{e0d561}
      \definecolor{NTEbluebright}{HTML}{9d65ff}
      \definecolor{NTEmagentabright}{HTML}{f4005f}
      \definecolor{NTEcyanbright}{HTML}{58d1eb}
      \definecolor{NTEwhitebright}{HTML}{f6f6ef}
    }
  }
  \str_case_e:nn{\NTEK@thememode}{
    {dark}{
      \definecolor{NTEbackground}{named}{NTEblack}
      \definecolor{NTEfont}{named}{NTEwhitebright}
    }
    {light}{
      \definecolor{NTEbackground}{named}{NTEwhitebright}
      \definecolor{NTEfont}{named}{NTEblack}
    }
  }
}
\ExplSyntaxOff
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NTE@fonts}
%    \begin{macrocode}
\def\NTE@fonts{
  \bfseries%
  \NTEK@fontsize%
  \setmonofont{\NTEK@font}%
  \ttfamily%
  \setlength{\parindent}{0pt}%
  \setlength{\parskip}{-0.9pt}%
}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeSet}
% Same definition as in nodetree.sty. Only implement this command
% if not already registers.
%    \begin{macrocode}
\providecommand{\NodetreeSet}[1]{%
  \setkeys{NTE}{#1}%
}
%    \end{macrocode}
% \end{macro}
%
%    \begin{macrocode}
\newenvironment{NodetreeEmbedView}[1][]{
  \setkeys{NTE}{#1}
  \NTE@colors
  \begin{mdframed}[
    linecolor=black,
    backgroundcolor=NTEbackground,
    fontcolor=NTEfont,
  ]%
  \NTE@fonts
}{
  \end{mdframed}%
}
%    \end{macrocode}
%
% \begin{environment}{NodetreeEmbedEnv}
%    \begin{macrocode}
\NewDocumentEnvironment { NodetreeEmbedEnv } { O{} +b } {
  \setkeys{NTE}{#1}
  \ifNTEK@showmarkup
    \noindent
    \texttt{\detokenize{#2}}
  \else
  \fi
  \NTE@colors
  \begin{NodetreeEmbedView}
    \directlua{
      nodetree.compile_include('\luaescapestring{\unexpanded{#2}}')
    }
  \end{NodetreeEmbedView}
}{}
%    \end{macrocode}
% \end{environment}

% \begin{macro}{\NodetreeEmbedCmd}
%    \begin{macrocode}
\NewDocumentCommand { \NodetreeEmbedCmd } { O{} +v } {
  \setkeys{NTE}{#1}
  \ifNTEK@showmarkup
    \noindent
    \texttt{#2}
  \else
  \fi
  \NTE@colors
  \begin{NodetreeEmbedView}
    \directlua{
      nodetree.compile_include('\luaescapestring{\unexpanded{#2}}')
    }
  \end{NodetreeEmbedView}
}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\NodetreeEmbedInput}
%    \begin{macrocode}
\newcommand{\NodetreeEmbedInput}[2][]{
  \setkeys{NTE}{#1}
  \begin{NodetreeEmbedView}
  \input{#2.nttex}
  \end{NodetreeEmbedView}
}
\let\nodetreeterminalemulator\NodetreeEmbedInput
%    \end{macrocode}
% \end{macro}
%
\endinput
% \iffalse
%</packageembed>
% \fi
%
% \Finale
\endinput
