I'm using the algorithm2e package for pseudocode. I got some very long lines that needed to be wrapped. Is there a way to indent the following (breaked) lines and/or put a mark at the first line to signalize that there happened a linebreak (similar to solution for listings package)
I found a similar question for the listings package, that was answered before, but I'm looking explicitly for an algorithm2e solution.
The following minimal example defines
\nosemic: remove printing of the end-of-line (EOL) character (typically ;);\dosemic: reinstate printing of the EOL character;\pushline: indents line by 1em (the typical indent); provided by algorithm2e as \Indp;\popline: remove indent of \pushline (undent?); provided by algorithm2e as \Indm
\documentclass{article}
\usepackage{algorithm2e}% http://ctan.org/pkg/algorithm2e
\makeatletter
\newcommand{\nosemic}{\renewcommand{\@endalgocfline}{\relax}}% Drop semi-colon ;
\newcommand{\dosemic}{\renewcommand{\@endalgocfline}{\algocf@endline}}% Reinstate semi-colon ;
\newcommand{\pushline}{\Indp}% Indent
\newcommand{\popline}{\Indm\dosemic}% Undent
\makeatother
\begin{document}
\begin{algorithm}[H]
\SetAlgoLined
\KwData{this text}
\KwResult{how to write algorithm with \LaTeX2e }
initialization\;
\While{not at end of this document}{
read current\;
\eIf{understand}{
go to next section\;
\nosemic this is a very long statement that has to be\;
\pushline\dosemic wrapped over two lines\;
\popline current section becomes this one\;
}{
go back to the beginning of current section\;
}
}
\caption{How to write algorithms}
\end{algorithm}
\end{document}
Since I am unfamiliar with your algorithm2e setup, I'm not sure how you would like to combine the four commands. As such, I've kept them separate for maximum (yet manual) usage.
In fact there is a simpler solution: use classical \hangafter and \hangindent. This works fine with algorithm2e.
Notes:
\skiptext is the length of text indent in algorithm for a new block; so I choose 1/2 of this indent;
no need to redefine internal macro as \algocf@endline as almost all can be redefined in algorithm2e. Use \SetEndCharOfAlgoLine to redefine end of line
See below for an example of use of \hangafter and \hangindent:
\documentclass{article}
\usepackage{algorithm2e}% http://ctan.org/pkg/algorithm2e
%
\newcommand{\nosemic}{\SetEndCharOfAlgoLine{\relax}}% Drop semi-colon ;
\newcommand{\dosemic}{\SetEndCharOfAlgoLine{\string;}}% Reinstate
\newcommand{\pushline}{\Indp}% Indent
\newcommand{\popline}{\Indm\dosemic}% Undent
%
\begin{document}
\begin{algorithm}[H]
\SetAlgoLined
\KwData{this text}
\KwResult{how to write algorithm with \LaTeX2e }
initialization\;
\While{not at end of this document}{
read current\;
\eIf{understand}{
go to next section\;
\nosemic this is a very long statement that has to be\;
\pushline\dosemic wrapped over two lines\;
\popline current section becomes this one\;
\hangindent=.5\skiptext\hangafter=1
this is a very long statement that should be indented automatically on the next
lines if this statement is longer than one line\;
Following lines should be indented normally\;
}{
go back to the beginning of current section\;
}
}
\caption{How to write algorithms}
\end{algorithm}
\end{document}
