1

I'm able to generate a complex tree item in LaTeX with dirtree manually (see MWE below). In order to avoid the recurrent repetition of code, I tried to set the declaration of each tree item within a LaTeX command. However, I get the error ! Use of \next doesn't match its definition.

Here the expected result:

Expected result

Here the minimum working example (MWE) without the use of command:

\documentclass[8pt]{scrartcl}

\usepackage{dirtree}
\usepackage{floatrow}
\usepackage{blindtext}


\thisfloatsetup{%
objectset=raggedright,
}
\begin{document}
\dirtree{%
    .1 node1 \hfill \begin{minipage}[t]{1cm}
    { }
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    long comment multiline line number 1
    \end{minipage}.
    .2 node2 \hfill \begin{minipage}[t]{1cm}
    type 0
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    long comment multiline line number 2
    \end{minipage}.
    .3 leaf1 \hfill \begin{minipage}[t]{1cm}
    type 1
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    long comment multiline line number 3
    \end{minipage}.
    .3 leaf2 \hfill \begin{minipage}[t]{1cm}
    type 1
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    long comment multiline line number 4
    \end{minipage}.
    .2 node3 \hfill \begin{minipage}[t]{1cm}
    type 0
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    very very very very long comment multiline line number 5
    \end{minipage}.
    .3 leaf3 \hfill \begin{minipage}[t]{1cm}
    type 2
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    long comment multiline line number 6
    \end{minipage}.
    .3 leaf4 \hfill \begin{minipage}[t]{1cm}
    {}
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    no type specified
    \end{minipage}.
}
\end{document}

Here the attempt of defining a command \treedef to avoid the repetition of redundant code

\documentclass[8pt]{scrartcl}

\usepackage{dirtree}
\usepackage{floatrow}
\usepackage{blindtext}


% #1: Level
% #2: Name
% #3: Type
% #4: Comment
\newcommand{\treedef}[4]{
    .{#1} {#2} \hfill \begin{minipage}[t]{1cm}
    {#3}
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    {#4}
    \end{minipage}.
}


\thisfloatsetup{%
objectset=raggedright,
}
\begin{document}
\dirtree{%
    \treedef{1}{node1}{}{long comment multiline line number 1}
    \treedef{2}{node2}{type 0}{long comment multiline line number 2}
    \treedef{3}{leaf1}{type 1}{long comment multiline line number 3}
    \treedef{3}{leaf2}{type 1}{long comment multiline line number 4}
    \treedef{2}{node3}{type 0}{very very very very long comment multiline line number 5}
    \treedef{3}{leaf3}{type 2}{long comment multiline line number 6}
    \treedef{3}{leaf4}{}{no type specified}
}


\end{document}
ZoKaP
  • 35

1 Answers1

2
\documentclass[8pt]{scrartcl}

\usepackage{dirtree}
\usepackage{floatrow}
\usepackage{blindtext}
\usepackage{etoolbox}

% #1: Level
% #2: Name
% #3: Type
% #4: Comment

\newcommand{\treedef}[4]{%
    \appto\dirtreecode{%  ← must have no space at the beginning
    .#1 #2 \hfill \begin{minipage}[t]{1cm}
    #3
    \end{minipage} \hfill \begin{minipage}[t]{3.5cm}
    #4
    \end{minipage}. % ← must have a space here
    }%
}

\thisfloatsetup{%
objectset=raggedright,
}

\begin{document}

\def\dirtreecode{}
\treedef{1}{node1}{}{long comment multiline line number 1}
\treedef{2}{node2}{type 0}{long comment multiline line number 2}
\treedef{3}{leaf1}{type 1}{long comment multiline line number 3}
\treedef{3}{leaf2}{type 1}{long comment multiline line number 4}
\treedef{2}{node3}{type 0}{very very very very long comment multiline line number 5}
\treedef{3}{leaf3}{type 2}{long comment multiline line number 6}
\treedef{3}{leaf4}{}{no type specified}
%\show\dirtreecode  % execute this if you want to see what is going to be put inside \dirtree{...}
\expandafter\dirtree\expandafter{\dirtreecode}

\end{document}

I ignore the "underfull hbox" error messages, since they aren't the main issue here.

Basically the code builds the whole of the "body" using \appto, before passing it to \dirtree using \expandafter.

user202729
  • 7,143