%D \module
%D   [       file=core-job, % copied from main-001,
%D        version=1997.03.31,
%D          title=\CONTEXT\ Core Macros,
%D       subtitle=Job Handling,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA / Hans Hagen \& Ton Otten}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

%D This module is still to be split and documented.

\writestatus{loading}{ConTeXt Core Macros / Job Handling}

\unprotect

\registerctxluafile{core-job}{1.001}

\let \currentproject     \empty
\let \currentproduct     \empty
\let \currentenvironment \empty
\let \currentcomponent   \empty

\let \loadedfiles        \empty
\let \processedfiles     \empty

\let \nomorefiles        \relax

\let \allinputpaths      \empty
\let \locatedfilepath    \empty

\newcount\textlevel
\newcount\fileprocesslevel

\setvalue{\c!file::0}{\jobname}

\def\processedfile % is used in styles, don't change !
  {\getvalue{\c!file::\number\fileprocesslevel}}

\def\dostarttextfile#1%
  {\global\advance\fileprocesslevel\plusone
   \setxvalue{\c!file::\number\fileprocesslevel}{#1}%
   \@EA\doglobal\@EA\addtocommalist\@EA{#1}\processedfiles}

\def\dostoptextfile
  {\global\advance\fileprocesslevel\minusone}

\def\processlocalfile#1#2%
  {#1{#2}\donothing{\readfile{#2}\donothing\donothing}}

\def\processfile       #1{\ctxlua{commands.processfile("#1")}}
\def\doifinputfileelse #1{\ctxlua{commands.doifinputfileelse("#1")}}
\def\locatefilepath    #1{\edef\locatedfilepath{\ctxlua{commands.locatefilepath("#1")}}}
\def\usepath         [#1]{\edef\allinputpaths{\ctxlua{commands.usepath("#1")}}}
\def\usesubpath      [#1]{\edef\allinputpaths{\ctxlua{commands.usesubpath("#1")}}}
\def\usezipfile          {\dodoubleempty\dousezipfile}
\def\dousezipfile[#1][#2]{\ctxlua{commands.usezipfile("#1","#2")}} % [filename] [optional subtree]

\def\loadexamodes        {\dosingleempty\doloadexamodes}
\def\doloadexamodes  [#1]{\ctxlua{commands.loadexamodes("#1")}}

\def\registerfileinfo[#1#2]#3% geen \showmessage ?
  {\writestatus\m!systems{#1#2 file #3 at line \the\inputlineno}}

\ifx\preloadfonts   \undefined \let\preloadfonts   \relax \fi
\ifx\preloadspecials\undefined \let\preloadspecials\relax \fi

\def\loadallsystemfiles#1#2%
  {\ifx\@@svdirectory\empty
     \readsysfile{#1}{\showmessage\m!systems2{#1}}{#2}%
   \else% yet undocumented
     \def\doloadsystemfile##1%
       {\readsetfile{##1}{#1}{\showmessage\m!systems2{#1}}{#2}}%
     \processcommacommand[\@@svdirectory]\doloadsystemfile
   \fi}

\ifx\disableXML\undefined \let\disableXML\relax \fi

\def\loadsystemfiles
  {\reportprotectionstate
   \readsysfile\f!newfilename{\showmessage\m!systems2\f!newfilename}\donothing
  %\readsysfile\f!oldfilename{\showmessage\m!systems2\f!oldfilename}\donothing
   \loadallsystemfiles\f!filfilename
     \donothing
   \loadallsystemfiles\f!sysfilename
     {\loadallsystemfiles{\f!sysfilename.rme}\donothing % new, fall back
      \doglobal\appendtoks % brrr better \setcatcodetable\ctxcatcodes % % test
        \bgroup\disableXML\loadallsystemfiles\f!errfilename\donothing\egroup
      \to\everygoodbye}}

%D We don't want multiple jobfiles to interfere.

\def\loadoptionfile
  {\readjobfile{\jobname.\f!optionextension}
     {\showmessage\m!systems2{\jobname.\f!optionextension}%
      \ctxlua{commands.logoptionfile("\jobname.\f!optionextension")}}%
     {\writestatus\m!systems {no \jobname.\f!optionextension}}}

% Most natural ...
%
% \def\doateverystarttext
%   {\the\everystarttext
%    \global\let\doateverystarttext\relax}
%
% ... most practical, since we can load env's in a
% something.run file (nested \starttext's; see for
% instance x-res-08, where we definitely want to
% open the file!).

\def\doateverystarttext
  {\the\everystarttext
   \global\everystarttext\emptytoks}

\unexpanded\def\starttext
  {\doateverystarttext
   \ifcase\textlevel
     \registerfileinfo[begin]\jobfilename
   \fi
   \global\advance\textlevel\plusone}

\unexpanded\def\stoptext
  {\global\advance\textlevel\minusone
   \ifnum\textlevel>\zerocount \else
     \flushfinallayoutpage % optional
     \page % anyway
     \the\everystoptext
    %\the\everybye            %
    %\the\everygoodbye        % == \end (new)
    %\expandafter\normalend   %
\ifcase\textlevel
     \registerfileinfo[end]\jobfilename
\fi
     \expandafter\finalend
   \fi}

\def\forcequitjob#1%
  {\writestatus\m!systems{forcing quit: #1}%
   \batchmode
   \dorecurse\textlevel{\stoptext}
   \normalend}

\let\autostoptext\relax

\def\autostarttext
  {\ifcase\textlevel
     \starttext
     \writestatus\m!systems{auto \string\starttext..\string\stoptext}%
     \let\autostoptext\stoptext
   \fi}

\def\finalend
  {\ifnum\textlevel>\zerocount \else
     \the\everybye
     \the\everygoodbye
     \doifsometokselse\everynotabene{\writeline\the\everynotabene\writeline}\donothing
     \global\everybye    \emptytoks % rather unneeded
     \global\everygoodbye\emptytoks % but for sure
     \expandafter\normalend
   \fi}

\let\end\finalend

\def\emergencyend
  {\writestatus\m!systems{invalid \@EA\string\csname\e!start\v!text\endcsname...\@EA\string\csname\e!stop\v!text\endcsname\space structure}%
   \stoptext}

\def\currentfile{\inputfilename}

\def\doexecutefileonce#1%
  {\beforesplitstring#1\at.\to\currentfile
   \fullexpandtwoargsafter\doifnotinset\currentfile\loadedfiles
     {\fullexpandoneargafter\addtocommalist\currentfile\loadedfiles
      \doexecutefile{#1}}}

\def\doexecutefile#1%
  {\registerfileinfo[begin]{#1}%
   \dostarttextfile{#1}%
   \processfile{#1}%
   \dostoptextfile
   \registerfileinfo[end]{#1}}

\def\donotexecutefile#1%
  {}

\def\useenvironment[#1]% maybe commalist
  {\environment #1 \relax}

\def\environment #1 % at outermost level only (load only once)
  {\pushmacro\startenvironment
   \pushmacro\stopenvironment
   \unexpanded\def\startenvironment ##1 {}%
   \let\stopenvironment\relax
   \startreadingfile
   \doexecutefileonce{#1}
   \stopreadingfile
   \popmacro\stopenvironment
   \popmacro\startenvironment}

\def\component #1 % at outermost level only
  {\dostarttextfile{#1}%
   \processfile{#1}%
   \dostoptextfile}

\newcount\filelevel

\let\currentcomponent    \v!text
\let\currentcomponentpath\f!currentpath

\def\donextlevel#1#2#3#4#5#6#7\\%
  {\pushmacro\currentcomponent
   \pushmacro\currentcomponentpath
   \let\currentcomponent#1%
   \setsystemmode\currentcomponent
   \splitfilename{#1}%
   \ifx\splitoffpath\empty
     \let\currentcomponentpath\f!currentpath
   \else
     \let\currentcomponentpath\splitoffpath
   \fi
   \beforesplitstring#7\at.\to#2\relax % can become path + base
   \ifcase\filelevel\relax
     \starttext
     \def\project     ##1 {#3{##1}}%
     \def\environment ##1 {#4{##1}}%
     \def\product     ##1 {#5{##1}}%
     \def\component   ##1 {#6{##1}}%
   \fi
   \advance\filelevel\plusone
   \fullexpandoneargafter\addtocommalist{#1}\loadedfiles}

\def\doprevlevel
  {\popmacro\currentcomponentpath
   \popmacro\currentcomponent
   \setsystemmode\currentcomponent
   \ifnum\filelevel=\plusone
     \expandafter\stoptext
   \else
     \advance\filelevel\minusone
     \expandafter\endinput
   \fi}

\unexpanded\def\startproject #1 %
  {\donextlevel\v!project\currentproject
     \donotexecutefile\doexecutefileonce
     \doexecutefileonce\doexecutefile#1\\}

\unexpanded\def\startproduct #1 %
  {\doateverystarttext
   \donextlevel\v!product\currentproduct
     \doexecutefileonce\doexecutefileonce
     \donotexecutefile\doexecutefile#1\\}

\unexpanded\def\startcomponent #1 %
  {\doateverystarttext
   \donextlevel\v!component\currentcomponent
     \doexecutefileonce\doexecutefileonce
     \donotexecutefile\doexecutefile#1\\}

\unexpanded\def\startenvironment #1 %
  {\donextlevel\v!environment\currentenvironment
     \donotexecutefile\doexecutefileonce
     \donotexecutefile\donotexecutefile#1\\}

% \startproject test
%     1: \startmode[*project] project \stopmode \endgraf
%     2: \startmode[*product] product \stopmode \endgraf
% \stopproject

\unexpanded\def\stopproject    {\doprevlevel}
\unexpanded\def\stopproduct    {\doprevlevel}
\unexpanded\def\stopcomponent  {\doprevlevel}
\unexpanded\def\stopenvironment{\doprevlevel}

% more or less replaced by modes

\setvalue{\e!start\v!localenvironment}[#1]%
  {\let\loadedlocalenvironments\empty
   \def\docommand##1%
     {\beforesplitstring##1\at.\to\someevironment
      \fullexpandoneargafter\addtocommalist\someevironment\loadedlocalenvironments}%
   \processcommalist[#1]\docommand
   \fullexpandtwoargsafter\doifcommonelse % no longer next needed
       {\currentproject,\currentproduct,%
        \currentcomponent,\currentenvironment}
       {\loadedlocalenvironments}
     {\letvalue{\e!stop\v!localenvironment}\relax}
     {\grabuntil{\e!stop\v!localenvironment}\gobbleoneargument}} % TH: fixed, was \relax

\setvalue{\v!localenvironment}#1 {\doexecutefileonce{#1}}

% NOT TOEVOEGEN: \the\everytrace

\neverypar\emptytoks

% \appendtoks \flushnotes                     \to \everypar
% \appendtoks \synchronizesidefloats          \to \everypar
% \appendtoks \checkindentation               \to \everypar
% \appendtoks \showparagraphnumber            \to \everypar
% \appendtoks \flushmargincontents            \to \everypar
% \appendtoks \flushcommentanchors            \to \everypar
% \appendtoks \synchronizenotes               \to \everypar

% \appendtoks \flushnotes                     \to \everydisplay
% \appendtoks \adjustsidefloatdisplaylines    \to \everydisplay

\protect \endinput