%%
%% This is file `ltfilehook.ltx',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% ltfilehook.dtx  (with options: `2ekernel')
%% 
%% This is a generated file.
%% 
%% Copyright 2020 Frank Mittelbach
%% 
%% This file was generated from file(s) of the LaTeX `lthooks Bundle'.
%% --------------------------------------------------------------------------
%% 
%% It may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3c
%% 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 1.3c or later is part of all distributions of LaTeX
%% version 2005/12/01 or later.
%% 
%% This file may only be distributed together with a copy of the LaTeX
%% `lthooks Bundle'. You may however distribute the `lthooks Bundle'
%% without such generated files.
%% 
%% The newest sources can be found below
%% 
%%    https://github.com/FrankMittelbach/fmitex/
%% 
%% where one can also log issues in case there are any.
%% 
%% 
%% File: ltfilehook.dtx (C) Copyright 2020 Frank Mittelbach, LaTeX Team
\providecommand\ltfilehookversion{v0.9a}
\providecommand\ltfilehookdate{2020/07/19}
\def\CurrentFile{}
\def\CurrentFilePath{}
\ExplSyntaxOn
\tl_new:N \l__filehook_internal_tl
\cs_new_protected:Npn \@filehook@set@curr@file #1
  { \exp_args:NV \__filehook_normalise_file_name:n #1 }
\cs_new_protected:Npn \__filehook_normalise_file_name:n #1
  {
    \file_if_exist:nTF {#1}
      {
        \exp_args:Nx \file_parse_full_name:nNNN
          { \file_full_name:n {#1} }
      }
      { \file_parse_full_name:nNNN {#1} }
      \CurrentFilePath \CurrentFile \l__filehook_internal_tl
    \tl_set:Nx \CurrentFile { \CurrentFile \l__filehook_internal_tl }
  }
\seq_new:N \g__filehook_input_file_seq
\cs_new_protected:Npn \@filehook@file@push
  {
    \seq_gpush:Nx \g__filehook_input_file_seq
      { { \CurrentFilePath } { \CurrentFile } }
  }
\cs_new_protected:Npn \@filehook@file@pop
  {
    \seq_gpop:NNTF \g__filehook_input_file_seq \l__filehook_internal_tl
      { \exp_after:wN \__filehook_file_pop_assign:nn \l__filehook_internal_tl }
      { \ERROR_should_not_happen }
  }
\cs_new_protected:Npn \__filehook_file_pop_assign:nn #1 #2
  {
    \tl_set:Nn \CurrentFilePath {#1}
    \tl_set:Nn \CurrentFile {#2}
  }
\ExplSyntaxOff
\let\InputIfFileExists\@undefined
\DeclareRobustCommand \InputIfFileExists[3]{%
  \@filehook@file@push
  \IfFileExists{#1}%
    {%
      \edef\reserved@a{\@filef@und
        \def\noexpand\CurrentFile{\CurrentFile}%
        \def\noexpand\CurrentFilePath{\CurrentFilePath}%
      }%
      \expandafter\@swaptwoargs\expandafter
        {\reserved@a}%
        {%
          #2%
          \@addtofilelist{#1}%
          \UseHook{file/before}%
          \UseHook{file/before/\CurrentFile}%
          \@@input
        }%
      \UseHook{file/after/\CurrentFile}%
      \UseHook{file/after}%
      \@filehook@file@pop
    }%
    {\@filehook@file@pop #3}%
}
\def\set@curr@file#1{%
  \begingroup
    \escapechar\m@ne
    \xdef\@curr@file{%
      \expandafter\expandafter\expandafter\unquote@name
      \expandafter\expandafter\expandafter{%
      \expandafter\string
        \csname\@firstofone#1\@empty\endcsname}}%
  \endgroup
  \@filehook@set@curr@file{\@curr@file}%
}
\def\load@onefilewithoptions#1[#2][#3]#4{%
  \@pushfilename
  \xdef\@currname{#1}%
  \global\let\@currext#4%
  \let\CurrentOption\@empty
  \@reset@ptions
  \makeatletter
  \def\reserved@a{%
    \@ifl@aded\@currext{#1}%
      {\@if@ptions\@currext{#1}{#2}{}%
        {\@latex@error
            {Option clash for \@cls@pkg\space #1}%
            {The package #1 has already been loaded
             with options:\MessageBreak
             \space\space[\@ptionlist{#1.\@currext}]\MessageBreak
             There has now been an attempt to load it
              with options\MessageBreak
             \space\space[#2]\MessageBreak
             Adding the global options:\MessageBreak
             \space\space
                  \@ptionlist{#1.\@currext},#2\MessageBreak
             to your \noexpand\documentclass declaration may fix this.%
             \MessageBreak
             Try typing \space <return> \space to proceed.}}}%
      {\@pass@ptions\@currext{#2}{#1}%
       \global\expandafter
       \let\csname ver@\@currname.\@currext\endcsname\@empty
       \expandafter\let\csname\@currname.\@currext-h@@k\endcsname\@empty
       \InputIfFileExists
         {\@currname.\@currext}%
         {%
           \ifx\@currext\@pkgextension
             \UseHook{package/before}%
             \UseHook{package/before/\@currname}%
           \else
             \ifx\@currext\@clsextension
               \UseHook{class/before}%
               \UseHook{class/before/\@currname}%
             \fi
           \fi
           \@filehook@file@push
         }%
         {\@missingfileerror\@currname\@currext}%
    \let\@unprocessedoptions\@@unprocessedoptions
    \csname\@currname.\@currext-h@@k\endcsname
    \expandafter\let\csname\@currname.\@currext-h@@k\endcsname
              \@undefined
    \ifx\@currext\@pkgextension
      \UseHook{package/after/\@currname}%
      \UseHook{package/after}%
    \else
      \ifx\@currext\@clsextension
        \UseHook{class/after/\@currname}%
        \UseHook{class/after}%
      \fi
    \fi
    \@filehook@file@pop
    \@unprocessedoptions}%
    \@ifl@ter\@currext{#1}{#3}{}%
      {\@latex@warning@no@line
         {You have requested,\on@line,
          version\MessageBreak
            `#3' of \@cls@pkg\space #1,\MessageBreak
          but only version\MessageBreak
           `\csname ver@#1.\@currext\endcsname'\MessageBreak
          is available}}%
    \ifx\@currext\@clsextension\let\LoadClass\@twoloadclasserror\fi
    \@popfilename
    \@reset@ptions}%
  \reserved@a}
\@ifl@t@r\fmtversion{2020/10/01}
{%
\def\load@onefilewithoptions#1[#2][#3]#4{%
  \@pushfilename
  \xdef\@currname{#1}%
  \global\let\@currext#4%
  \let\CurrentOption\@empty
  \@reset@ptions
  \makeatletter
  \def\reserved@a{%
    \@ifl@aded\@currext{#1}%
      {\@if@ptions\@currext{#1}{#2}{}%
        {\@latex@error
            {Option clash for \@cls@pkg\space #1}%
            {The package #1 has already been loaded
             with options:\MessageBreak
             \space\space[\@ptionlist{#1.\@currext}]\MessageBreak
             There has now been an attempt to load it
              with options\MessageBreak
             \space\space[#2]\MessageBreak
             Adding the global options:\MessageBreak
             \space\space
                  \@ptionlist{#1.\@currext},#2\MessageBreak
             to your \noexpand\documentclass declaration may fix this.%
             \MessageBreak
             Try typing \space <return> \space to proceed.}}}%
      {\@pass@ptions\@currext{#2}{#1}%
       \global\expandafter
       \let\csname ver@\@currname.\@currext\endcsname\@empty
       \expandafter\let\csname\@currname.\@currext-h@@k\endcsname\@empty
       \InputIfFileExists
         {\@currname.\@currext}%
         {%
           \ifx\@currext\@pkgextension
             \UseHook{package/before}%
             \UseHook{package/before/\@currname}%
           \else
             \ifx\@currext\@clsextension
               \UseHook{class/before}%
               \UseHook{class/before/\@currname}%
             \fi
           \fi
           \@filehook@file@push
         }%
         {\@missingfileerror\@currname\@currext}%
    \expandafter\let\csname unprocessedoptions-\@currname.\@currext\endcsname
                    \@@unprocessedoptions
    \csname\@currname.\@currext-h@@k\endcsname
    \expandafter\let\csname\@currname.\@currext-h@@k\endcsname
              \@undefined
    \ifx\@unprocessedoptions\relax
      \let\@unprocessedoptions\@undefined
    \else
      \csname unprocessedoptions-\@currname.\@currext\endcsname
    \fi
    \expandafter\let
        \csname unprocessedoptions-\@currname.\@currext\endcsname
       \@undefined
    \ifx\@currext\@pkgextension
      \UseHook{package/after/\@currname}%
      \UseHook{package/after}%
    \else
      \ifx\@currext\@clsextension
        \UseHook{class/after/\@currname}%
        \UseHook{class/after}%
      \fi
    \fi
    \@filehook@file@pop
    }%
    \@ifl@ter\@currext{#1}{#3}{}%
      {\@latex@warning@no@line
         {You have requested,\on@line,
          version\MessageBreak
            `#3' of \@cls@pkg\space #1,\MessageBreak
          but only version\MessageBreak
           `\csname ver@#1.\@currext\endcsname'\MessageBreak
          is available}}%
    \ifx\@currext\@clsextension\let\LoadClass\@twoloadclasserror\fi
    \@popfilename
    \@reset@ptions}%
  \reserved@a}
}{}%

\def\@include#1 {%
  \clearpage
  \if@filesw
    \immediate\write\@mainaux{\string\@input{#1.aux}}%
  \fi
  \@tempswatrue
  \if@partsw
    \@tempswafalse
    \edef\reserved@b{#1}%
    \@for\reserved@a:=\@partlist\do
      {\ifx\reserved@a\reserved@b\@tempswatrue\fi}%
  \fi
  \if@tempswa
    \let\@auxout\@partaux
    \if@filesw
      \immediate\openout\@partaux #1.aux
      \immediate\write\@partaux{\relax}%
    \fi
    \set@curr@file{#1}%
    \UseHook{include/before}%
    \UseHook{include/before/#1}%
    \@input@{#1.tex}%
    \UseHook{include/end/#1}%
    \UseHook{include/end}%
    \clearpage
    \UseHook{include/after/#1}%
    \UseHook{include/after}%
    \clearpage
    \@writeckpt{#1}%
    \if@filesw
      \immediate\closeout\@partaux
    \fi
  \else
    \deadcycles\z@
    \@nameuse{cp@#1}%
  \fi
  \let\@auxout\@mainaux
}
\@ifl@t@r\fmtversion{2020/10/01}
{%
\def\@include#1 {%
  \clearpage
  \if@filesw
    \immediate\write\@mainaux{\string\@input{"#1.aux"}}%
  \fi
  \@tempswatrue
  \if@partsw
    \@tempswafalse
    \edef\reserved@b{#1}%
    \@for\reserved@a:=\@partlist\do
      {\ifx\reserved@a\reserved@b\@tempswatrue\fi}%
  \fi
  \if@tempswa
    \let\@auxout\@partaux
    \if@filesw
      \immediate\openout\@partaux "#1.aux"
      \immediate\write\@partaux{\relax}%
    \fi
    \UseHook{include/before}%
    \UseHook{include/before/#1}%
    \@input@{#1.tex}%
    \UseHook{include/end/#1}%
    \UseHook{include/end}%
    \clearpage
    \UseHook{include/after/#1}%
    \UseHook{include/after}%
    \clearpage
    \@writeckpt{#1}%
    \if@filesw
      \immediate\closeout\@partaux
    \fi
  \else
    \deadcycles\z@
    \@nameuse{cp@#1}%
  \fi
  \let\@auxout\@mainaux}
}{}


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\endinput
%%
%% End of file `ltfilehook.ltx'.