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+%% Copyright (C) 2011-2020 by Martin Scharrer <martin@scharrer-online.de>
+%% ----------------------------------------------------------------------
+%% 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 Martin Scharrer.
+%%
+%% This work consists of the files filehook.dtx and filehook.ins
+%% and the derived files filehook.sty, filehook-fink.sty,
+%% filehook-listings.sty, filehook-memoir.sty, filehook-scrlfile.sty
+%% and pgf-filehook.sty
+%%
+\NeedsTeXFormat{LaTeX2e}[1999/12/01]
+\ProvidesPackage{filehook-2019}[%
+ 2020/09/27
+ v0.8
+ Hooks for input files]
+\newif\iffilehook@force
+\DeclareOption{force}{\filehook@forcetrue}
+\ProcessOptions\relax
+\newif\iffilehook@newfmt
+\@ifl@t@r\fmtversion{2019/10/01}{\filehook@newfmttrue}{\filehook@newfmtfalse}
+\def\filehook@let#1#2{%
+ \expandafter\ifx\csname #2\space\endcsname\relax
+ \expandafter\let\csname #1\expandafter\endcsname\csname #2\endcsname
+ \else
+ \expandafter\def\csname #1\expandafter\endcsname\expandafter{\expandafter\protect\csname #1\space\endcsname}%
+ \expandafter\let\csname #1\space\expandafter\endcsname\csname #2\space\endcsname
+ \fi
+}
+\def\filehook@glet#1#2{%
+ \expandafter\ifx\csname #2\space\endcsname\relax
+ \expandafter\global\expandafter\let\csname #1\expandafter\endcsname\csname #2\endcsname
+ \else
+ \expandafter\global\expandafter\def\csname #1\expandafter\endcsname\expandafter{\expandafter\protect\csname #1\space\endcsname}%
+ \expandafter\global\expandafter\let\csname #1\space\expandafter\endcsname\csname #2\space\endcsname
+ \fi
+}
+\def\filehook@cmp#1#2{%
+ \expandafter\ifx\csname #2\space\endcsname\relax
+ \expandafter\ifx\csname #1\expandafter\endcsname\csname #2\endcsname
+ \expandafter\expandafter\expandafter\@firstoftwo
+ \else
+ \expandafter\expandafter\expandafter\@secondoftwo
+ \fi
+ \else
+ \expandafter\ifx\csname #1\space\expandafter\endcsname\csname #2\space\endcsname
+ \expandafter\expandafter\expandafter\@firstoftwo
+ \else
+ \expandafter\expandafter\expandafter\@secondoftwo
+ \fi
+ \fi
+}
+\begingroup
+\gdef\filehook@csuse#1{\ifcsname #1\endcsname\csname #1\expandafter\endcsname\fi}
+\expandafter\ifx\csname csuse\endcsname\relax
+ \expandafter\ifx\csname ifcsname\endcsname\relax
+ \gdef\filehook@csuse#1{\expandafter\ifx\csname #1\endcsname\relax\else\csname #1\expandafter\endcsname\fi}
+ \fi
+\else
+ \global\let\filehook@csuse\csuse
+\fi
+\endgroup
+\def\filehook@include@atbegin#1{%
+ \filehook@let{InputIfFileExists}{filehook@@InputIfFileExists}%
+ \filehook@csuse{\filehook@include@atbegin@#1}%
+ \filehook@include@@atbegin
+}
+\def\filehook@include@@atbegin{}
+\def\filehook@include@atend#1{%
+ \filehook@include@@atend
+ \filehook@csuse{\filehook@include@atend@#1}%
+}
+\def\filehook@include@@atend{}
+\def\filehook@include@after#1{%
+ \filehook@include@@after
+ \filehook@csuse{\filehook@include@after@#1}%
+}
+\def\filehook@include@@after{}
+\def\filehook@input@atbegin#1{%
+ \filehook@let{InputIfFileExists}{filehook@@InputIfFileExists}%
+ \filehook@csuse{\filehook@input@atbegin@\filehook@ensureext{#1}}%
+ \filehook@input@@atbegin
+}
+\def\filehook@input@@atbegin{}
+\def\filehook@input@atend#1{%
+ \filehook@input@@atend
+ \filehook@csuse{\filehook@input@atend@\filehook@ensureext{#1}}%
+}
+\def\filehook@input@@atend{}
+\def\filehook@atbegin#1{%
+ \filehook@csuse{\filehook@atbegin@\filehook@ensureext{#1}}%
+ \filehook@@atbegin
+}
+\def\filehook@@atbegin{}
+\def\filehook@atend#1{%
+ \filehook@@atend
+ \filehook@csuse{\filehook@atend@\filehook@ensureext{#1}}%
+}
+\def\filehook@@atend{}
+\def\filehook@every@atbegin#1{%
+ \filehook@every@@atbegin
+}
+\def\filehook@every@@atbegin{}
+\def\filehook@every@atend#1{%
+ \filehook@every@@atend
+}
+\def\filehook@every@@atend{}
+\def\filehook@include@atbegin@{filehook@include@atbegin@}
+\def\filehook@include@atend@{filehook@include@atend@}
+\def\filehook@include@after@{filehook@include@after@}
+\def\filehook@input@atbegin@{filehook@input@atbegin@}
+\def\filehook@input@atend@{filehook@input@atend@}
+\def\filehook@input@after@{filehook@input@after@}
+\def\filehook@atbegin@{filehook@atbegin@}
+\def\filehook@atend@{filehook@atend@}
+\def\filehook@after@{filehook@after@}
+\def\filehook@append{\g@addto@macro}
+\long\def\filehook@appendwarg#1#2{%
+ \begingroup
+ \toks@\expandafter{#1{##1}#2}%
+ \edef\@tempa{\the\toks@}%
+ \expandafter\gdef\expandafter#1\expandafter##\expandafter1\expandafter{\@tempa}%
+ \endgroup
+}
+\long\def\filehook@prefix#1#2{%
+ \begingroup
+ \@temptokena{#2}%
+ \toks@\expandafter{#1}%
+ \xdef#1{\the\@temptokena\the\toks@}%
+ \endgroup
+}
+\long\def\filehook@prefixwarg#1#2{%
+ \begingroup
+ \@temptokena{#2}%
+ \toks@\expandafter{#1{##1}}%
+ \edef\@tempa{\the\@temptokena\the\toks@}%
+ \expandafter\gdef\expandafter#1\expandafter##\expandafter1\expandafter{\@tempa}%
+ \endgroup
+}
+\def\filehook@addtohook#1#2#3{%
+ \begingroup
+ \edef\@tempa{#3}%
+ \edef\@tempa{#2\filehook@ensureext{\@tempa}}%
+ \@ifundefined{\@tempa}{\global\@namedef{\@tempa}{}}{}%
+ \expandafter\endgroup
+ \expandafter#1\csname\@tempa\endcsname
+}
+\newcommand*\AtBeginOfIncludes{%
+ \filehook@append\filehook@include@@atbegin
+}
+\newcommand*\AtEndOfIncludes{%
+ \filehook@prefix\filehook@include@@atend
+}
+\newcommand*\AfterIncludes{%
+ \filehook@prefix\filehook@include@@after
+}
+\newcommand*\AtBeginOfIncludeFile[1]{%
+ \filehook@addtohook\filehook@append\filehook@include@atbegin@{\filehook@ensuretex{#1}}%
+}
+\newcommand*\AtEndOfIncludeFile[1]{%
+ \filehook@addtohook\filehook@prefix\filehook@include@atend@{\filehook@ensuretex{#1}}%
+}
+\newcommand*\AfterIncludeFile[1]{%
+ \filehook@addtohook\filehook@prefix\filehook@include@after@{\filehook@ensuretex{#1}}%
+}
+\newcommand*\AtBeginOfInputs{%
+ \filehook@append\filehook@input@@atbegin
+}
+\newcommand*\AtEndOfInputs{%
+ \filehook@prefix\filehook@input@@atend
+}
+\newcommand*\AtBeginOfInputFile{%
+ \filehook@addtohook\filehook@append\filehook@input@atbegin@
+}
+\newcommand*\AtEndOfInputFile{%
+ \filehook@addtohook\filehook@prefix\filehook@input@atend@
+}
+\newcommand*\AtBeginOfFiles{%
+ \filehook@append\filehook@@atbegin
+}
+\newcommand*\AtEndOfFiles{%
+ \filehook@prefix\filehook@@atend
+}
+\newcommand*\AtBeginOfEveryFile{%
+ \filehook@append\filehook@every@@atbegin
+}
+\newcommand*\AtEndOfEveryFile{%
+ \filehook@prefix\filehook@every@@atend
+}
+\newcommand*\AtBeginOfFile{%
+ \filehook@addtohook\filehook@append\filehook@atbegin@
+}
+\newcommand*\AtEndOfFile{%
+ \filehook@addtohook\filehook@prefix\filehook@atend@
+}
+\newcommand*\AtBeginOfClassFile{%
+ \@ifnextchar*
+ {\AtBeginOfXFile@star\@clsextension}%
+ {\AtBeginOfXFile@normal\@clsextension}%
+}
+\newcommand*\AtBeginOfPackageFile{%
+ \@ifnextchar*
+ {\AtBeginOfXFile@star\@pkgextension}%
+ {\AtBeginOfXFile@normal\@pkgextension}%
+}
+\def\AtBeginOfXFile@star#1*#2{%
+ \@ifl@aded{#1}{#2}%
+ {\@firstofone}%
+ {\AtBeginOfXFile@normal{#1}{#2}}%
+}
+\def\AtBeginOfXFile@normal#1#2{%
+ \AtBeginOfFile{#2.#1}%
+}
+\newcommand*\AtEndOfClassFile{%
+ \@ifnextchar*
+ {\AtEndOfXFile@star\@clsextension}%
+ {\AtEndOfXFile@normal\@clsextension}%
+}
+\newcommand*\AtEndOfPackageFile{%
+ \@ifnextchar*
+ {\AtEndOfXFile@star\@pkgextension}%
+ {\AtEndOfXFile@normal\@pkgextension}%
+}
+\def\AtEndOfXFile@star#1*#2{%
+ \@ifl@aded{#1}{#2}%
+ {\@firstofone}%
+ {\AtEndOfXFile@normal{#1}{#2}}%
+}
+\long\def\AtEndOfXFile@normal#1#2#3{%
+ \AtEndOfFile{#2.#1}{\AtEndOfPackage{#3}}%
+}
+\newcommand*\ClearHook{%
+ \begingroup
+ \def\filehook@prefix##1##2{%
+ \gdef##1{}%
+ \endgroup
+ }%
+ \let\filehook@append\filehook@prefix
+}
+\let\filehook@orig@@input@\@input@
+\let\filehook@orig@@iinput\@iinput
+\def\@input@#1{%
+ \@ifnextchar\clearpage
+ {%
+ \filehook@every@atbegin{#1}%
+ \filehook@include@atbegin{#1}%
+ \filehook@orig@@input@{#1}%
+ \filehook@include@atend{#1}%
+ \clearpage
+ \filehook@include@after{#1}%
+ \filehook@every@atend{#1}%
+ \@gobble
+ }%
+ {\filehook@orig@@input@{#1}}%
+}
+\def\filehook@@iinput#1{%
+ \filehook@every@atbegin{#1}%
+ \filehook@input@atbegin{#1}%
+ \filehook@orig@@iinput{#1}%
+ \filehook@input@atend{#1}%
+ \filehook@every@atend{#1}%
+}
+\let\@iinput\filehook@@iinput
+\def\filehook@swap#1#2{#2#1}
+\def\filehook@ensureext#1{%
+ \expandafter\filehook@@ensureext#1\empty.tex\empty\empty
+}
+\def\filehook@@ensureext#1.#2\empty#3\empty{#1.#2}
+\def\filehook@ensuretex#1{%
+ \expandafter\filehook@@ensuretex#1\empty.tex\empty\empty
+}
+\def\filehook@@ensuretex#1.tex\empty#2\empty{#1.tex}
+\iffilehook@newfmt
+\expandafter\def\expandafter\latex@InputIfFileExists\expandafter{%
+ \expandafter\protect\csname InputIfFileExists\space\endcsname
+}
+\expandafter\long\expandafter\def\csname latex@InputIfFileExists\space\endcsname#1#2{%
+ \IfFileExists{#1}%
+ {%
+ \expandafter\@swaptwoargs\expandafter
+ {\@filef@und}{#2\@addtofilelist{#1}\@@input}}}
+\else
+\long\def\latex@InputIfFileExists#1#2{%
+ \IfFileExists{#1}%
+ {#2\@addtofilelist{#1}%
+ \@@input\@filef@und
+ }%
+}
+\fi
+\DeclareRobustCommand\filehook@default@InputIfFileExists[2]{%
+ \IfFileExists{#1}%
+ {\expandafter\filehook@swap
+ \expandafter{\@filef@und}%
+ {#2\@addtofilelist{#1}%
+ \filehook@every@atbegin{#1}%
+ \filehook@atbegin{#1}%
+ \@@input}%
+ \filehook@atend{#1}%
+ \filehook@every@atend{#1}%
+ }%
+}
+\filehook@glet{filehook@default@InputIfFileExists}{filehook@default@InputIfFileExists}%
+\DeclareRobustCommand\filehook@@default@InputIfFileExists[2]{%
+ \filehook@let{InputIfFileExists}{filehook@InputIfFileExists}%
+ \IfFileExists{#1}%
+ {\expandafter\filehook@swap
+ \expandafter{\@filef@und}%
+ {#2\@addtofilelist{#1}%
+ \filehook@atbegin{#1}%
+ \@@input}%
+ \filehook@atend{#1}%
+ }%
+}
+\filehook@glet{filehook@@default@InputIfFileExists}{filehook@@default@InputIfFileExists}%
+\AtBeginOfPackageFile{scrlfile}{%
+ \filehook@glet{InputIfFileExists}{latex@InputIfFileExists}%
+}%
+\AtEndOfPackageFile*{scrlfile}{%
+ \RequirePackage{filehook-scrlfile}%
+}%
+\AtBeginOfPackageFile*{fink}{%
+ \RequirePackage{kvoptions}%
+ \begingroup
+ \filehook@let{InputIfFileExists}{latex@InputIfFileExists}%
+}%
+\AtEndOfPackageFile*{fink}{%
+ \edef\@tempa{\noexpand\PassOptionsToPackage{mainext=\fnk@mainext,maindir=\fnk@maindir}{currfile}}%
+ \expandafter\endgroup\@tempa
+ \RequirePackage{filehook-fink}%
+}%
+\AtBeginOfClassFile{memoir}{%
+ \filehook@let{InputIfFileExists}{latex@InputIfFileExists}%
+ \let\@iinput\filehook@orig@@iinput
+}%
+\AtEndOfClassFile*{memoir}{%
+ \let\@iinput\filehook@@iinput
+ \RequirePackage{filehook-memoir}%
+}%
+\filehook@cmp{InputIfFileExists}{filehook@InputIfFileExists}%
+ {}% already set up
+ {%
+ \filehook@cmp{InputIfFileExists}{latex@InputIfFileExists}%
+ {%
+ \filehook@let{filehook@InputIfFileExists}{filehook@default@InputIfFileExists}%
+ \filehook@let{filehook@@InputIfFileExists}{filehook@@default@InputIfFileExists}%
+ \filehook@let{InputIfFileExists}{filehook@InputIfFileExists}%
+ }%
+ {%
+ \iffilehook@force
+ \filehook@let{filehook@InputIfFileExists}{filehook@default@InputIfFileExists}%
+ \filehook@let{filehook@@InputIfFileExists}{filehook@@default@InputIfFileExists}%
+ \filehook@let{InputIfFileExists}{filehook@InputIfFileExists}%
+ \PackageWarning{filehook}{Detected unknown definition of \string\InputIfFileExists.^^J%
+ The 'force' option of 'filehook' is in effect. Macro is overwritten with default!}%
+ \else
+ \PackageError{filehook}{Detected unknown definition of \string\InputIfFileExists.^^J%
+ Use the 'force' option of 'filehook' to overwrite it.}{}%
+ \fi
+ }%
+ }%
+\AtBeginDocument{%
+ % Check if definition got changed again. For the new LaTeX format we check again \InputIfFileExists<space>,
+ % for the old format to \InputIfFileExists directly.
+ \filehook@cmp{InputIfFileExists}{filehook@InputIfFileExists}{}{%
+ \PackageWarning{filehook}{Macro \string\InputIfFileExists\space got redefined after 'filehook' was loaded.^^J%
+ Certain file hooks might now be dysfunctional!}%
+ }%
+}
+\endinput
+%%
+%% End of file `filehook-2019.sty'.