vim type Display for C Code in Latex

Question

Target Display:

My Latex Code:

% xxxxxxxxxxxxxxxxxxxxxxxxx Code Snippet STARTS xxxxxxxxxxxxxxxxxxxxxx
\lstset{
  language=C,                     % choose the language of the code
  stepnumber=1,                   % the step between two line-numbers. If it's 1, each line will be numbered
 % numbersep=5pt,                 % how far the line-numbers are from the code
%  backgroundcolor=\color{white}, % choose the background color. You must add \usepackage{color}
  showspaces=false,               % show spaces adding particular underscores
  showstringspaces=false,         % underline spaces within strings
  showtabs=false,                 % show tabs within strings adding particular underscores
  tabsize=4,                      % sets default tabsize to 2 spaces
  captionpos=t,                   % sets the caption-position to top
  breaklines=true,                % sets automatic line breaking
  breakatwhitespace=true,         % sets if automatic breaks should only happen at whitespace
 % title=\lstname,                % show the filename of files included with \lstinputlisting;
 identifierstyle=\color{black},
 caption={Array of Pointers to Strings},
 frame=lrtb,
 %keywordstyle=\bfseries\color{OliveGreen},         % keyword style
 keywordstyle=[1]\bfseries\color{OliveGreen},
 % Define TYPE-1 Keywords
 keywords=[1]{
    int, char,float, double, unsigned, signed,
    goto},
 % Define TYPE-2 Keywords
 keywordstyle=[2]\bfseries\color{Violet},
  keywords=[2]{
  %s, %d, 
  include, define},
 % Define TYPE-3 Keywords
 keywordstyle=[3]\bfseries\color{Sepia},
  keywords=[3]{
    return},
 commentstyle=\bfseries\color{blue},   % comment style
 stringstyle= \color{Magenta!80},          % string literal style
 belowcaptionskip = 0.2in,                % Space below caption
 abovecaptionskip = 0.2in                 % Space above caption
}
\begin{lstlisting}

#include <stdio.h>

#define SIZE 4

int main()
{
    char *strings[SIZE] = 
                      {
                        "String1", 
                        "String2",
                        "String3",
                        "String4"
                      };

    char *ptr_swap;   /* A temporary pointer to swap strings */

    /* Swap "String2" with "String3" */
    ptr_swap  = strings [1];
    strings [1] = strings [2];                    
    strings [2] = ptr_swap;


    printf ("%s %s %s %s", strings[0], strings[1], strings[2], strings[3]);

    return 0;
} 

\end{lstlisting}
% xxxxxxxxxxxxxxxxxxxxxxxxx Code Snippet ENDS xxxxxxxxxxxxxxxxxxxxxxxx

My Output is as follows:

The fields marked under Red Line have Different Formatting from the Target.

• Please help me correct these settings so that I can get the desired 'gvim' like output.

• How can I specify keywordstyle for Format Specifiers since, putting: %s, %d -> make the statement commented?

Thanks.

Answer 1

Welcome to TeX.SX! Please always add a fully compilable minimal working example (MWE).

I think, you need something like that:

\documentclass{article}

\usepackage{listings}
\usepackage[usenames,dvipsnames]{xcolor}

\begin{document}
...
\end{document}

Now to your problem. If you look into listings/lstlang1.sty you will see, that #include is not a keyword, but a directive. So you can say

...
  directivestyle=\bfseries\color{Violet},
...

and all those #... directives are colored in violet.

With %s that is another problem. You could escape %s as \% and give the option alsoletter={\%}. But keywords are generally not highlighted in strings. So this would highlight a free-floating %s, but not the ones in your example and also not other expressions like %03d, which can be used in printf.

There is a solution for this too, but only because of a bug in the listings package. (Compare also this thread) You can give %s as otherkeyword and it will get highlighted in strings. As otherkeyword is automatically in keyword group 1, you will have to move the regular keywords into another group, as they should be styled differently.

Numbers can be colored as in How can I change the color of digits when using the listings package?. Notice also the comment there on how to have no highlight in comments.

The <stdio.h> is basically a string. So you can just put < and > as new string delimiters. But be careful that you have to escape them if they would occur elsewhere.

I can't say right now how you could highlight constants after #define like SIZE. (If it is even possible)

So all in all you will have the following:

\documentclass{article}

\usepackage{listings}
\usepackage[usenames,dvipsnames]{xcolor}

\def\digitcolor{\color{Magenta!80}}

\begin{document}

\lstset{
  language=C,                     % choose the language of the code
  stepnumber=1,                   % the step between two line-numbers. If it's 1, each line will be numbered
 % numbersep=5pt,                 % how far the line-numbers are from the code
%  backgroundcolor=\color{white}, % choose the background color. You must add \usepackage{color}
  showspaces=false,               % show spaces adding particular underscores
  showstringspaces=false,         % underline spaces within strings
  showtabs=false,                 % show tabs within strings adding particular underscores
  tabsize=4,                      % sets default tabsize to 2 spaces
  captionpos=t,                   % sets the caption-position to top
  breaklines=true,                % sets automatic line breaking
  breakatwhitespace=true,         % sets if automatic breaks should only happen at whitespace
 % title=\lstname,                % show the filename of files included with \lstinputlisting;
 identifierstyle=\color{black},
 caption={Array of Pointers to Strings},
 frame=lrtb,
 % Define TYPE-1 Keywords
 directivestyle=\bfseries\color{Violet},
 keywords={},
 otherkeywords={\%s, \%d},
 keywordstyle=\bfseries\color{Violet},
 keywordstyle=[2]\bfseries\color{OliveGreen},
 % Define TYPE-2 Keywords
 keywords=[2]{
    auto,break,case,char,const,continue,default,do,double,%
  else,enum,extern,float,for,goto,if,int,long,register,%
  short,signed,sizeof,static,struct,switch,typedef,union,unsigned,%
  void,volatile,while},
%    int, char,float, double, unsigned, signed,
%    goto},
 % Define TYPE-3 Keywords
 keywordstyle=[3]\bfseries\color{Sepia},
  keywords=[3]{
    return},
    literate=*%
    {0}{{{\digitcolor0}}}1
    {1}{{{\digitcolor1}}}1
    {2}{{{\digitcolor2}}}1
    {3}{{{\digitcolor3}}}1
    {4}{{{\digitcolor4}}}1
    {5}{{{\digitcolor5}}}1
    {6}{{{\digitcolor6}}}1
    {7}{{{\digitcolor7}}}1
    {8}{{{\digitcolor8}}}1
    {9}{{{\digitcolor9}}}1,
 commentstyle=\bfseries\color{blue},   % comment style
 morestring=[b]{<},
 morestring=[b]{>},
 stringstyle= \color{Magenta!80},          % string literal style
 belowcaptionskip = 0.2in,                % Space below caption
 abovecaptionskip = 0.2in                 % Space above caption
}
\begin{lstlisting}

#include <stdio.h>

#define SIZE 4

int main()
{
    char *strings[SIZE] = 
                      {
                        "String1", 
                        "String2",
                        "String3",
                        "String4"
                      };

    char *ptr_swap;   /* A temporary pointer to swap strings */

    /* Swap "String2" with "String3" */
    ptr_swap  = strings [1];
    strings [1] = strings [2];                    
    strings [2] = ptr_swap;

    printf ("%s %s %s %s", strings[0], strings[1], strings[2], strings[3]);

    return 0;
} 

\end{lstlisting}

\end{document}