%%
%% This is file `shellesc.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% shellesc.dtx  (with options: `package')
%% 
%% This is a generated file.
%% 
%% The source is maintained by the LaTeX Project team and bug
%% reports for it can be opened at https://latex-project.org/bugs/
%% (but please observe conditions on bug reports sent to that address!)
%% 
%% 
%% Copyright (C) 1993-2019
%% The LaTeX3 Project and any individual authors listed elsewhere
%% in this file.
%% 
%% This file was generated from file(s) of the Standard LaTeX `Tools 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
%%    https://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
%% `Tools Bundle'. You may however distribute the LaTeX `Tools Bundle'
%% without such generated files.
%% 
%% The list of all files belonging to the LaTeX `Tools Bundle' is
%% given in the file `manifest.txt'.
%% 
%% Source File: shellesc.dtx
%% Copyright (C) 2015-2019
%%
%% The LaTeX3 Project and any individual authors listed elsewhere
%% in this file.
%%
%% This file may be distributed under the terms of the LPPL.
%% See README for details.
\ifx\ProvidesPackage\undefined
\def\next#1#2[#3]{\wlog{#2 #3}}
\ifx\PackageInfo\undefined\def\PackageInfo#1#2{\wlog{#1: #2}}\fi
\ifx\PackageWarning\undefined\def\PackageWarning#1#2{\wlog{#1: #2}}\fi
\expandafter\next\fi
\ProvidesPackage{shellesc}
       [2016/06/07 v0.02b unified shell escape interface for LaTeX]
\ifcase
  \ifx\pdfshellescape\@undefined
    \ifx\shellescape\@undefined
      \ifx\directlua\@undefined
        \z@
      \else
        \directlua{%
          tex.sprint((status.shell_escape or os.execute()) .. " ")}
      \fi
    \else
      \shellescape
    \fi
  \else
    \pdfshellescape
  \fi
  \PackageWarning{shellesc}{Shell escape disabled}
\or
  \PackageInfo   {shellesc}{Unrestricted shell escape enabled}
\else
  \PackageInfo   {shellesc}{Restricted shell escape enabled}
\fi
\ifx\lastsavedimageresourcepages\@undefined
  \protected\def\ShellEscape{\immediate\write18 }
\else
  \protected\def\ShellEscape#1{%
    \directlua{os.execute("\luaescapestring{#1}")}}
\fi
\ifx\lastsavedimageresourcepages\@undefined
  \protected\def\DelayedShellEscape{\relax\write18 }
\else
  \protected\def\DelayedShellEscape#1{%
    \latelua{os.execute("\luaescapestring{#1}")}}
\fi
\ifx\lastsavedimageresourcepages\@undefined\expandafter\endinput\fi
\directlua{%
shellesc = shellesc or {}
local function write_or_execute()
  local s = token.scan_int()
  if (s==18) then
     tex.sprint(\the\numexpr\catcodetable@atletter\relax,
                "\string\\ShellEscape ")
  else
     tex.sprint(\the\numexpr\catcodetable@atletter\relax,
                "\string\\shellesc@write " .. s)
  end
end
shellesc.write_or_execute=write_or_execute
}
\let\shellesc@write\write
\protected\def\write{\directlua{shellesc.write_or_execute()}}
\endinput
%%
%% End of file `shellesc.sty'.
