LaTeX syntax highlighting examples

15 Comments

Syntax highlighting in LaTeX using the listings package is very powerful. Below, I will provide a few examples for your convenience.

First, let me briefly summarize the usage of the listings package.

%Preamble
\usepackage{listings}
\usepackage{color}
\definecolor{name}{rgb}{0.5,0.5,0.5}
\lstset{key1=value1,key2=value2} % Define listings style

%Document body
\begin{lstlisting}
% Add code here
\end{lstlisting}

% Or load from file
\lstinputlisting{filename.java}

So below you’ll find a few complete code examples to reuse and modify for your purposes:

“The Pseudo Code Box”

\definecolor{lightpurple}{rgb}{0.8,0.8,1}

\lstset{
numbers=left,
stepnumber=1,
numbersep=5pt,
numberstyle=\small\color{black},
basicstyle=\ttfamily,
keywordstyle=\color{black},
commentstyle=\color{black},
stringstyle=\color{black},
frame=single,
tabsize=2,
backgroundcolor=\color{lightpurple},
caption=Fibonacci numbers pseudo code}

pseudo-code-example

This code was taken from here.

 
“Java/Eclipse style”

\definecolor{javared}{rgb}{0.6,0,0} % for strings
\definecolor{javagreen}{rgb}{0.25,0.5,0.35} % comments
\definecolor{javapurple}{rgb}{0.5,0,0.35} % keywords
\definecolor{javadocblue}{rgb}{0.25,0.35,0.75} % javadoc

\lstset{language=Java,
basicstyle=\ttfamily,
keywordstyle=\color{javapurple}\bfseries,
stringstyle=\color{javared},
commentstyle=\color{javagreen},
morecomment=[s][\color{javadocblue}]{/**}{*/},
numbers=left,
numberstyle=\tiny\color{black},
stepnumber=2,
numbersep=10pt,
tabsize=4,
showspaces=false,
showstringspaces=false}

java-example
“The Trickiest: LaTeX”

\definecolor{lightgrey}{rgb}{0.9,0.9,0.9}
\definecolor{darkgreen}{rgb}{0,0.6,0}

\lstset{language=[LaTeX]TeX,
texcsstyle=*\bf\color{blue},
numbers=none,
breaklines=true,
keywordstyle=\color{darkgreen},
commentstyle=\color{red},
otherkeywords={$, \{, \}, \[, \]},
frame=none,
tabsize=2,
backgroundcolor=\color{lightgrey},
caption=LaTeX example}

latex-example

The LaTeX code was copied from here.

15 Comments

  1. Hi tom!
    Thanks for your code examples. Have you seen that white lines/stripes between the lines of code? – Do you know a solution for disabling them?

    Best regards!

    Reply

    • Hi Kai,

      Thanks for your comment. I am aware of the problem. I found the following solution on stackoverflow and modified it slightly adding line numbers:

      \documentclass{minimal}
\usepackage[pdftex]{xcolor}
\usepackage[a4paper,hmargin=6cm]{geometry}
\usepackage{listings}
\usepackage{framed}
\lstset{numbers=left,
stepnumber=1,
numbersep=1pt,
numberstyle=\color{black},
basicstyle=\ttfamily}
\begin{document}
\definecolor{shadecolor}{named}{gray}
\begin{shaded}
\begin{lstlisting}
 if (a < b)
 {
    printf("A is smaller than  B!\n");
 }
 a = b;
\end{lstlisting}
\end{shaded}
\end{document}

      Best, Tom.

      Reply

      • Thanks, Tom! – I have seen this on so, too. But the shaded box is (a little bit) ugly… 😐

        I have seen some examples that use “backgroundcolor” for the listings _without_ the white lines. Also I found an answer on tex.sx… But my listings are always striped… 🙁

      • Omar Sweidan

        Sorry, I forgot.

        \documentclass{report}
\usepackage{xcolor}
\usepackage{listings}          % for source code snippets.
\definecolor{pblue}{rgb}{0.13,0.13,1}
\definecolor{pgreen}{rgb}{0,0.5,0}
\definecolor{pred}{rgb}{0.9,0,0}
\definecolor{pgrey}{rgb}{0.46,0.45,0.48}
\lstdefinestyle{Javastyle}{  
    showspaces=false,
    showtabs=false,
    breaklines=true,
    showstringspaces=false,
    breakatwhitespace=true,
    commentstyle=\color{pgreen},
    keywordstyle=\color{pblue},
    stringstyle=\color{pred},
    basicstyle=\ttfamily\singlespacing,
    moredelim=[il][\textcolor{pgrey}]{\$\$},
    moredelim=[is][\textcolor{pgrey}]{\%\%}{\%\%},
    rulecolor= \color{black} 
}

\begin{document}

%\lstset{style=Javastyle}
\begin{lstlisting}[language=Java]
@NonNull
public static byte[] longToBytes(long x) {
buffer.clear();
buffer.putLong(0, x);
return buffer.array();
}

        When I remove the % before \lstset{}, I get an error message: Undefined control sequence. \begin{lstlisting}[language=Java]

      • tom

        I can’t run your example. It would be useful if you provided a working example. A quick glance suggests that you have to load the setspace package to use \singlespacing.

        Best, Tom

    • tom

      Hi Omar,

      I removed your code, as there were again some lines missing towards the end. Anyway, as I said before, you’ll have to load the setspace package to use \singlespacing in your style definition:

      \usepackage{setspace}
      Reply

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