If I have a document whose name is my exam.tex, is it possible to make its output PDF file have a name of my exam [solved].pdf by appending the word [solved] only when the answers class option is enabled?
\documentclass[answers]{exam}
\begin{document}
text
\end{document}
Here's my solution to this problem.
If you compile without -shell-escape, it just runs as normal (i.e., if you are using the answers option it will output answers, otherwise not; the default \jobname is used.)
If you compile with -shell-escape, then it outputs two files: \jobname.pdf with questions and \jobname-solved.pdf with answers. It does this regardless of whether the answers option is passed to the class or not.
I've used latexmk so that required multiple compilations are taken into account automatically.
\documentclass{exam}
\usepackage{pdftexcmds}
\usepackage{iftex}
\makeatletter
\ltx@IfUndefined{pdf@shellescape}
{}
{\ifnum\pdf@shellescape=1
\ifpdftex
\def\latexmkengine{-pdf}%
\fi
\ifluatex
\def\latexmkengine{-lualatex}%
\fi
\ifxetex
\def\latexmkengine{-xelatex}%
\fi
\pdf@system{%
latexmk \latexmkengine\space -jobname="\jobname-solved"
-usepretex="\string\AtBeginDocument{\string\printanswerstrue}"
"\jobname"
}%
\pdf@system{%
latexmk \latexmkengine\space
-usepretex="\string\AtBeginDocument{\string\printanswersfalse}"
"\jobname"
}%
\expandafter\stop
\fi}
\makeatother
\begin{document}
\begin{questions}
\question One of these things is not like the others; one of these things is
not the same. Which one is different?
\begin{oneparchoices}
\choice John
\choice Paul
\choice George
\choice Ringo
\CorrectChoice Socrates
\end{oneparchoices}
\end{questions}
\end{document}
\jobname.pdf
\jobname-solved.pdf
If you want to only output one file at a time, you can slightly modify the above answer so that latexmk is only called when the answers option is actually passed to the exam class. This answers your question as you've asked it. It still needs to be compiled with -shell-escape.
\documentclass[answers]{exam}
\usepackage{pdftexcmds}
\usepackage{iftex}
\makeatletter
\ltx@IfUndefined{pdf@shellescape}
{}
{\ifnum\pdf@shellescape=1
\ifpdftex
\def\latexmkengine{-pdf}%
\fi
\ifluatex
\def\latexmkengine{-lualatex}%
\fi
\ifxetex
\def\latexmkengine{-xelatex}%
\fi
\ifprintanswers
\pdf@system{%
latexmk \latexmkengine\space -jobname="\jobname-solved" "\jobname"
}%
\expandafter\expandafter\expandafter\stop
\fi
\fi}
\makeatother
\begin{document}
\begin{questions}
\question One of these things is not like the others; one of these things is
not the same. Which one is different?
\begin{oneparchoices}
\choice John
\choice Paul
\choice George
\choice Ringo
\CorrectChoice Socrates
\end{oneparchoices}
\end{questions}
\end{document}
And an expl3 solution that handles file names with spaces. Still needs -shell-escape of course.
\documentclass{exam}
\usepackage{expl3}
\ExplSyntaxOn
\str_new:N \l__diaa_latexmk_engine_str
\str_new:N \g__diaa_solved_jobname_str
\str_const:Nn \l__diaa_latexmk { latexmk }
\cs_new:Nn \__diaa_build_solved_jobname:
{
\str_gset:Nx \g__diaa_solved_jobname_str { \c_sys_jobname_str }
\str_gremove_all:Nn \g__diaa_solved_jobname_str { " }
\str_gput_left:Nn \g__diaa_solved_jobname_str { " }
\str_gput_right:Nn \g__diaa_solved_jobname_str { ~[solved]" }
}
\sys_if_shell_unrestricted:T
{
\sys_if_engine_luatex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -lualatex } }
\sys_if_engine_pdftex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -pdf } }
\sys_if_engine_xetex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -xelatex } }
\__diaa_build_solved_jobname:
\sys_shell_now:x
{
\l__diaa_latexmk \c_space_tl
\l__diaa_latexmk_engine_str \c_space_tl
-usepretex="\string\AtBeginDocument{\string\printanswerstrue}" \c_space_tl
-jobname=\g__diaa_solved_jobname_str \c_space_tl
\c_sys_jobname_str
}
\sys_shell_now:x
{
\l__diaa_latexmk \c_space_tl
\l__diaa_latexmk_engine_str \c_space_tl
-usepretex="\string\AtBeginDocument{\string\printanswersfalse}" \c_space_tl
\c_sys_jobname_str
}
\stop
}
\ExplSyntaxOff
\begin{document}
\begin{questions}
\question One of these things is not like the others; one of these things is
not the same. Which one is different?
\begin{oneparchoices}
\choice John
\choice Paul
\choice George
\choice Ringo
\CorrectChoice Socrates
\end{oneparchoices}
\end{questions}
\end{document}
\documentclass[answers]{exam}
\usepackage{expl3}
\ExplSyntaxOn
\str_new:N \l__diaa_latexmk_engine_str
\str_new:N \g__diaa_solved_jobname_str
\str_const:Nn \l__diaa_latexmk { latexmk }
\cs_new:Nn \__diaa_build_solved_jobname:
{
\str_gset:Nx \g__diaa_solved_jobname_str { \c_sys_jobname_str }
\str_gremove_all:Nn \g__diaa_solved_jobname_str { " }
\str_gput_left:Nn \g__diaa_solved_jobname_str { " }
\str_gput_right:Nn \g__diaa_solved_jobname_str { ~[solved]" }
}
\sys_if_shell_unrestricted:T
{
\sys_if_engine_luatex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -lualatex } }
\sys_if_engine_pdftex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -pdf } }
\sys_if_engine_xetex:T
{ \str_set:Nn \l__diaa_latexmk_engine_str { -xelatex } }
\legacy_if:nT { printanswers }
{
\__diaa_build_solved_jobname:
\sys_shell_now:x
{
\l__diaa_latexmk \c_space_tl
\l__diaa_latexmk_engine_str \c_space_tl
-jobname=\g__diaa_solved_jobname_str \c_space_tl
\c_sys_jobname_str
}
\stop
}
}
\ExplSyntaxOff
\begin{document}
\begin{questions}
\question One of these things is not like the others; one of these things is
not the same. Which one is different?
\begin{oneparchoices}
\choice John
\choice Paul
\choice George
\choice Ringo
\CorrectChoice Socrates
\end{oneparchoices}
\end{questions}
\end{document}
lualatex instead of latexmk:\documentclass{exam}
\usepackage{expl3}
\ExplSyntaxOn
\str_new:N \g__diaa_solved_jobname_str
\str_const:Nn \l__diaa_latex_cmd { lualatex }
\str_const:Nn \l__diaa_latex_options { -synctex=1 ~ -interaction=nonstopmode }
\cs_new:Nn \__diaa_build_solved_jobname:
{
\str_gset:Nx \g__diaa_solved_jobname_str { \c_sys_jobname_str }
\str_gremove_all:Nn \g__diaa_solved_jobname_str { " }
\str_gput_left:Nn \g__diaa_solved_jobname_str { " }
\str_gput_right:Nn \g__diaa_solved_jobname_str { ~[solved]" }
}
\sys_if_shell_unrestricted:T
{
\__diaa_build_solved_jobname:
\sys_shell_now:x
{
\l__diaa_latex_cmd \c_space_tl
-jobname=\g__diaa_solved_jobname_str \c_space_tl
\l__diaa_latex_options \c_space_tl
"\string\AtBeginDocument{\string\printanswerstrue}" \c_space_tl
"\string\input{\c_sys_jobname_str}"
}
\sys_shell_now:x
{
\l__diaa_latex_cmd \c_space_tl
-jobname=\c_sys_jobname_str \c_space_tl
\l__diaa_latex_options \c_space_tl
"\string\AtBeginDocument{\string\printanswersfalse}" \c_space_tl
"\string\input{\c_sys_jobname_str}"
}
\stop
}
\ExplSyntaxOff
\begin{document}
\begin{questions}
\question One of these things is not like the others; one of these things is
not the same. Which one is different?
\begin{oneparchoices}
\choice John
\choice Paul
\choice George
\choice Ringo
\CorrectChoice Socrates
\end{oneparchoices}
\end{questions}
\end{document}
change name.tex results in this message Latexmk: Need to specify at most one filename if jobname specified without a %A, but 2 were found (after defaults and wildcarding).. Moreover, sometimes, I can have more spaces in the file name.
– Diaa
Dec 26 '19 at 09:45
[solved], I changed the respective line to -jobname="\jobname\space[solved]", did I make it the correct way?
– Diaa
Dec 26 '19 at 09:46
expl3. I'll update my answer later tonight.
– David Purton
Dec 26 '19 at 10:43
expl3 option for the case producing two outputs.
– David Purton
Dec 27 '19 at 01:30
lualatex instead of running it by latexmk, what should be changed in your code? For example, I would like to execute lualatex -synctex=1 -shell-escape -interaction=nonstopmode.
– Diaa
Jan 21 '20 at 09:57
lualatex directly. It's probably better to ask a new question in cases like this and just reference this question. Someone else might be able to provide an answer more quickly than me as only I see your comment here.
– David Purton
Jan 21 '20 at 12:29
latexmk or lualatex.
– Diaa
Apr 20 '20 at 01:25
--shell-escape? If yes, I would be grateful if you could provide an answer to show me how to do so. – Diaa Dec 24 '19 at 21:24answersis given as an option. That compilation process could output whatever filename you want, but you can't change the output filename of the current compilation process. (But you could probably run the new process and then end the current one without outputting anything, so you'd only end up with the other-named PDF. Your log file and all the rest would get the current filename, though, and you'd have to run any additional things you need for the new filename (e.g. bibtex/biber/makeindex/another run etc.). – cfr Dec 25 '19 at 03:33answersor not. On Linux/Mac you can usegrepfor this, in Windowsfindstr. – Marijn Dec 25 '19 at 17:35