As shown in this thread and this thread it is possible to conditionally create lists of figures and tables only if these items are used in a document.
I would like to extends this to listings. Everything works fine as long as you use the lstlisting environment at least once in the document. Normally, I include code with \lstinputlisting. Therefore, the lstlisting environment is not used. Thus, the \AtEndEnvironmetis never called and the command \conditionalLoL is never set to true.
Is there a way modify the definition of \conditionalLoL to include \lstinputlisting ?
Code so far:
\documentclass[listof=totoc]{scrreprt}
\usepackage[latin1]{inputenx}
\usepackage[T1]{fontenc}
\usepackage[ngerman,english]{babel}
\usepackage{etoolbox}
\usepackage{graphicx}
\usepackage{listings}
\usepackage{tabularx}
% https://tex.stackexchange.com/questions/33193/how-to-determine-whether-a-list-of-figures-is-empty-then-not-show-it-at-all
\makeatletter
% Figure
\AtEndEnvironment{figure}{\gdef\there@is@a@figure{}}%
\AtEndDocument{\ifdefined\there@is@a@figure\label{fig:was:used:in:doc}\fi}%
\newcommand{\conditionalLoF}{\@ifundefined{r@fig:was:used:in:doc}{}{\listoffigures}}%
% Table
\AtEndEnvironment{table}{\gdef\there@is@a@table{}}%
\AtEndDocument{\ifdefined\there@is@a@table\label{tab:was:used:in:doc}\fi}%
\newcommand{\conditionalLoT}{\@ifundefined{r@tab:was:used:in:doc}{}{\listoftables}}%
% Listing
\AtEndEnvironment{lstlisting}{\gdef\there@is@a@listing{}}%
\AtEndDocument{\ifdefined\there@is@a@listing\label{lst:was:used:in:doc}\fi}%
\newcommand{\conditionalLoL}{\@ifundefined{r@lst:was:used:in:doc}{}{\lstlistoflistings}}%
%
\makeatother
\begin{filecontents*}{command.txt}
Line 1
Line 2
\end{filecontents*}
\begin{document}
\clearpage
\tableofcontents
\conditionalLoF
\let\LaTeXStandardClearpage\clearpage
\let\clearpage\relax
\conditionalLoT
\conditionalLoL
\let\clearpage\LaTeXStandardClearpage % Return to the old definition
\vspace{1cm}
A figure:
\begin{figure}[htbp]
\centering
\includegraphics[width=0.25\linewidth]{example-image-a}
\caption{A picture}
\label{fig:label}
\end{figure}
A table:
\begin{table}[htbp]
\centering
\caption{A table}
\label{tab:label}
\begin{tabularx}{\linewidth}{lX}
test & test test test test test test test test test test test test test test test test test test test test
\end{tabularx}
\end{table}
A listing environment:
% \begin{lstlisting}[label=lst:label1,caption=A listing]
% command
% command
% \end{lstlisting}
A lstinputlisting:
\lstinputlisting[label=lst:label2,caption=Another listing]{command.txt}
\end{document}
Result with lstlisting environment:
Result only with listinputlisting:
Update
Using @Axel Sommerfeldt's answer I still got an empty list of tables for my original document. I found out that this is caused by a longtabu environment in my documentclass. Following is the MWE with longtabu causing an empty list of tables:
\documentclass[listof=totoc]{scrreprt}
\usepackage[latin1]{inputenx}
\usepackage[T1]{fontenc}
\usepackage[ngerman,english]{babel}
\usepackage{etoolbox}
\usepackage{graphicx}
\usepackage{listings}
\usepackage{longtable}
\usepackage{tabu}
\usepackage{tabularx}
\usepackage[figure,table,lstlisting]{totalcount}
\newcommand\conditionalLoF{%
\iftotalfigures\listoffigures\fi}
\newcommand\conditionalLoT{%
\iftotaltables\listoftables\fi}
\newcommand\conditionalLoL{%
\iftotallstlistings\lstlistoflistings\fi}
\begin{filecontents*}{command.txt}
Line 1
Line 2
\end{filecontents*}
\begin{document}
\clearpage
\tableofcontents
\conditionalLoF
\let\LaTeXStandardClearpage\clearpage
\let\clearpage\relax
\conditionalLoT
\conditionalLoL
\let\clearpage\LaTeXStandardClearpage % Return to the old definition
\vspace{1cm}
\newpage
\chapter{Tests}
\section{Figures}
A figure:
\begin{figure}[htbp]
\centering
\includegraphics[width=0.25\linewidth]{example-image-a}
\caption{A picture}
\label{fig:label}
\end{figure}
A non-floating picture:
\includegraphics[width=0.25\linewidth]{example-image-a}
\section{Tables}
% A table:
%
% \begin{table}[htbp]
% \centering
% \caption{A table}
% \label{tab:label}
% \begin{tabularx}{\linewidth}{lX}
% test & test test test test test test test test test test test test test test test test test test test test
% \end{tabularx}
% \end{table}
%
% A non-floating table:
%
% \begin{tabularx}{\linewidth}{lX}
% test & test test test test test test test test test test test test test test test test test test test test
% \end{tabularx}
A non-floating longtabu
\begin{longtabu} to \textwidth {lX}
test & test test test test test test test test test test test test test test test test test test test test
\end{longtabu}
\section{Listings}
A listing environment:
\begin{lstlisting}[label=lst:label1,caption=A listing environment]
command
command
\end{lstlisting}
A lstinputlisting:
\lstinputlisting[label=lst:label2,caption=A lstinputlisting]{command.txt}
\end{document}
I had a quick look at the tabu package documentation. But I am not sure why the counter for tables is added to for an non-floating longtabu in the totalcount package.
Any ideas?
\labelmust be placed after\caption, not before! – Mar 06 '16 at 16:11