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% ----------------------------------------------------------------------------
% the EXSHEETS-LISTINGS package
%
% Using listings with exsheets
%
% ----------------------------------------------------------------------------
% Clemens Niederberger
% Web: https://bitbucket.org/cgnieder/exsheets/
% E-Mail: contact@mychemistry.eu
% ----------------------------------------------------------------------------
% Copyright 2011-2014 Clemens Niederberger
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Clemens Niederberger.
% ----------------------------------------------------------------------------
% If you have any ideas, questions, suggestions or bugs to report, please
% feel free to contact me.
% ----------------------------------------------------------------------------
\RequirePackage{exsheets,listings}
% we need this loaded before expl3 syntax is activated:
\lst@RequireAspects{writefile}
\ProvidesExplPackage{exsheets-listings}
{\exsheets@date}
{\exsheets@version}
{listings in exsheets}
% ----------------------------------------------------------------------------
% variables:
\int_new:N \g__exsheets_listings_question_int
\int_new:N \g__exsheets_listings_solution_int
\tl_new:N \l__exsheets_listings_question_pre_tl
\tl_new:N \l__exsheets_listings_question_post_tl
\tl_new:N \l__exsheets_listings_question_options_tl
\tl_new:N \l__exsheets_listings_question_code_tl
\tl_new:N \l__exsheets_listings_solution_pre_tl
\tl_new:N \l__exsheets_listings_solution_post_tl
\tl_new:N \l__exsheets_listings_solution_options_tl
\tl_new:N \l__exsheets_listings_solution_code_tl
\tl_new:N \l__exsheets_listings_question_points_tl
% ----------------------------------------------------------------------------
% listings style for questions and solutions:
\keys_define:nn { exsheets }
{
question / listings .tl_set:N = \l__exsheets_listings_question_code_tl ,
solution / listings .tl_set:N = \l__exsheets_listings_solution_code_tl
}
% ----------------------------------------------------------------------------
% expansion help:
\cs_new:Npn \__exsheets_question_expandopt:Nnnnn #1#2#3#4#5
{ #1{#2}[#3]{#4}#5 }
\cs_generate_variant:Nn \__exsheets_question_expandopt:Nnnnn { NnVox }
\cs_new:Npn \__exsheets_question_expand_opt_and_body:Nnnn #1#2#3#4
{ #1{#2}[#3]#4 }
\cs_generate_variant:Nn \__exsheets_question_expand_opt_and_body:Nnnn { NnVx }
% ----------------------------------------------------------------------------
% lstquestion environment:
\keys_define:nn { exsheets / listings / question }
{
pre .tl_set:N = \l__exsheets_listings_question_pre_tl ,
post .tl_set:N = \l__exsheets_listings_question_post_tl ,
options .tl_set:N = \l__exsheets_listings_question_options_tl ,
points .tl_set:N = \l__exsheets_listings_question_points_tl ,
listings .tl_set:N = \l__exsheets_listings_question_code_tl ,
}
\keys_define:nn { exsheets / listings / solution }
{
pre .tl_set:N = \l__exsheets_listings_solution_pre_tl ,
post .tl_set:N = \l__exsheets_listings_solution_post_tl ,
options .tl_set:N = \l__exsheets_listings_solution_options_tl ,
listings .tl_set:N = \l__exsheets_listings_solution_code_tl ,
}
\cs_new:Npn \exsheets_listings_new_lstenvironment:nnnnnnn #1#2#3#4#5#6#7
{
\lstnewenvironment{#2}[1][]
{
\keys_set:nn {exsheets/listings/question} {#1,#4,##1}
\int_gincr:N \g__exsheets_listings_question_int
\lst@BeginWriteFile
{ \c_job_name_tl - ex \int_use:N\g__exsheets_listings_question_int .lst }
}
{
\lst@EndWriteFile
\__exsheets_question_expandopt:NnVox
\begin {#3}
\l__exsheets_listings_question_options_tl
{ \l__exsheets_listings_question_points_tl }
{
\exp_not:V \l__exsheets_listings_question_pre_tl
\exp_not:N \lstinputlisting
[ \exp_not:V \l__exsheets_listings_question_code_tl ]
{ \c_job_name_tl - ex \int_use:N\g__exsheets_listings_question_int .lst }
\exp_not:V \l__exsheets_listings_question_post_tl
}
\end {#3}
}
\lstnewenvironment{#5}[1][]
{
\keys_set:nn { exsheets / listings / solution } { #1,#7,##1 }
\int_gincr:N \g__exsheets_listings_solution_int
\lst@BeginWriteFile
{ \c_job_name_tl - sol \int_use:N \g__exsheets_listings_solution_int . lst }
}
{
\lst@EndWriteFile
\__exsheets_question_expand_opt_and_body:NnVx
\begin {#6}
\l__exsheets_listings_solution_options_tl
{
\exp_not:V \l__exsheets_listings_solution_pre_tl
\exp_not:N \lstinputlisting
[ \exp_not:V \l__exsheets_listings_solution_code_tl ]
{ \c_job_name_tl - sol \int_use:N \g__exsheets_listings_solution_int . lst }
\exp_not:V \l__exsheets_listings_solution_post_tl
}
\end {#6}
}
}
\NewDocumentCommand \NewLstQuSolPair { O{}mmO{}mmO{} }
{ \exsheets_listings_new_lstenvironment:nnnnnnn {#1}{#2}{#3}{#4}{#5}{#6}{#7} }
\NewLstQuSolPair{lstquestion}{question}{lstsolution}{solution}
\tex_endinput:D
HISTORY
2013/09/18 v0.1 - first draft, see http://tex.stackexchange.com/a/133969/5049
2013/10/11 v0.2 - first official version bundled with ExSheets
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