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%D \module
%D [ file=core-ctx,
%D version=2006.08.16, % old stuff
%D title=\CONTEXT\ Core Macros,
%D subtitle=Job Control,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Core Macros / Job Control}
\unprotect
\chardef\preprocessmethod 2 % 0=no check 1=present_check 2=log_check
\chardef\preprocessstate 0 % 1=found 2=not_present (skip)
\chardef\preprocesslocal 0 % 0=no 1=yes
\def \preprocesssuffix {.prep}
\def\loadctxpreplist
{\begingroup
\chardef\XMLtokensreduction\plusone
\ifcase\preprocessmethod
% no checking
\or
% simple checking
\or
\doiffileexistselse{./\jobname.ctl}
{\bgroup
\defineXMLenvironment[ctx:preplist][local=no]
{\doifelse{\XMLop{local}}{yes}
{\global\chardef\preprocesslocal\plusone
\writestatus\m!systems{loading ctx log file (local)}}%
{\writestatus\m!systems{loading ctx log file (specified)}}}
\donothing
\defineXMLenvironmentsave[ctx:prepfile][done=no]
\donothing
{\edef\readfilename{\XMLflush{ctx:prepfile}}%
\ifcase\preprocesslocal\else
\splitfilename\readfilename
\let\readfilename\splitoffbase
\fi
\writestatus\m!systems{registering \readfilename\space -> \XMLop{done}}%
\setxvalue{fp..\readfilename}{\XMLop{done}}}%
\processXMLfile{./\jobname.ctl}%
\egroup}%
{\global\chardef\preprocessmode\plusone}%
\fi
\global\let\loadctxpreplist\relax
\endgroup}
\appendtoks\loadctxpreplist\to\everystarttext % will become: \prependtoks\loadctxpreplist\to\everyjob
\def\docheckprepfile
{\ifcase\preprocessmethod
\iftracefiles\writestatus\m!systems{preprocessing - not needed}\fi
% no preprocessing
\or
% only check for existence
\iftracefiles\writestatus\m!systems{preprocessing - check existence of \readfilename\preprocesssuffix}\fi
\doiffileexistselse{\readfilename\preprocesssuffix}
{\chardef\preprocessstate\plusone}
\donothing
\or
% check when in list, otherwise assume normal file
\bgroup
\splitfilename\readfilename
\ifx\splitofftype\empty
% saveguard and speed up
\iftracefiles\writestatus\m!systems{preprocessing - no suffix}\fi
\egroup
\else\ifcase\preprocesslocal
% also ./ strippen
\iftracefiles\writestatus\m!systems{preprocessing - check presence of \readfilename\preprocesssuffix}\fi
\doifdefinedelse{fp..\readfilename}
{\egroup
\doiffileexistselse{\readfilename\preprocesssuffix}
{\chardef\preprocessstate\plusone}
{\chardef\preprocessstate\plustwo}}%
{\doifdefinedelse{fp.../\readfilename}
{\egroup
\edef\readfilename{./\readfilename}%
\doiffileexistselse{\readfilename\preprocesssuffix}
{\chardef\preprocessstate\plusone}
{\chardef\preprocessstate\plustwo}}%
{\doifdefinedelse{fp..\splitoffbase}%
{\egroup
\doiffileexistselse{\readfilename\preprocesssuffix}
{\chardef\preprocessstate\plusone}
{\chardef\preprocessstate\plustwo}}%
{\egroup}}}%
\else
% maybe just filecheck, why ctl
\iftracefiles\writestatus\m!systems{preprocessing - check local presence of \readfilename\preprocesssuffix}\fi
\doifdefinedelse{fp..\readfilename}
{\egroup
\doiffileexistselse{\readfilename\preprocesssuffix}
{\chardef\preprocessstate\plusone}
{\chardef\preprocessstate\plustwo}}%
{\egroup}%
\fi
\fi\fi}
% beware, \readfilename keeps the original one, but we load and store the
% suffixed with .prep file (if present)
\def\doreadfile#1#2#3#4% beware, this one already works at format generation time!
{\sanitizefilename#2\to\readfilename
\ifx\readfilename\empty
% silently ignore
\else
\let\trackedfilename\readfilename
\chardef\preprocessstate\zerocount
\ifconditional\trackfilenames
\doifundefinedelse{fn..\trackedfilename}\donetrue\donefalse
\else
\donetrue
\fi
\ifdone
\checkfilename\readfilename
\ifcase\kindoffile
% not a full path or url, check for existence
\doifelsenothing{#1}
{\iftracefiles\writestatus\m!systems{searching for \readfilename\space on tex path}\fi
\def\next{\redoreadfile\readfilename{#3}{#4}}}%
{\iftracefiles\writestatus\m!systems{searching for \readfilename\space on #1}\fi
\def\next{\redoreadfile{\pathplusfile{#1}{\readfilename}}{#3}{#4}}}%
\else
% a full path or url, no further checking done
\docheckprepfile
\ifcase\preprocessstate
\doiffileexistselse\readfilename
{\iftracefiles\writestatus\m!systems{located \readfilename}\fi
\def\next{#3\dodoreadfile}}%
{\iftracefiles\writestatus\m!systems{not found \readfilename}\fi
\def\next{#4}}%
\or
\iftracefiles\writestatus\m!systems{located \readfilename\preprocesssuffix}\fi
\def\next{#3\dodoreadfile}%
\or
\iftracefiles\writestatus\m!systems{not found \readfilename\preprocesssuffix}\fi
\def\next{#4}%
\fi
\fi
\else
\edef\readfilename{\getvalue{fn..\readfilename}}% ??? is done !
\iftracefiles\writestatus\m!systems{already located \readfilename}\fi
\def\next{#3\dodoreadfile}%
\fi
\expandafter\next
\fi}
\def\redoreadfile#1#2#3%
{\docheckprepfile
\ifcase\preprocessstate
\doiffileexistselse{#1}%
{\edef\readfilename{#1}%
\iftracefiles\writestatus\m!systems{#1 located}\fi
\def\next{#2\dodoreadfile}}%
{\iftracefiles\writestatus\m!systems{cannot locate #1}\fi
\advance\readlevel\minusone
\ifnum\readlevel>\zerocount
\edef\readfilename{\pathplusfile{\f!parentpath}{\readfilename}}%
\def\next{\redoreadfile\readfilename{#2}{#3}}%
\else
\def\next{#3}%
\fi}%
\or
\ifcase\preprocesslocal
\edef\readfilename{#1}% nor found
\else
% no path prepending
\fi
\iftracefiles\writestatus\m!systems{#1\preprocesssuffix\space located}\fi
\def\next{#2\dodoreadfile}%
\or
\def\next{#3}%
\fi
\next}
\def\dodoreadfile % we provide hooks, for instance for \enableXML
{\ifconditional\trackfilenames
\setxvalue{fn..\trackedfilename}{\readfilename\ifcase\preprocessstate\or\preprocesssuffix\fi}%
\fi
\the\everybeforereadfile
\ifcase\preprocessstate
% no checking or not found when using method 1
\def\dodoreadfileindeed{\inputgivenfile\readfilename}%
\or
% found when using method 1 or 2
\def\dodoreadfileindeed{\inputgivenfile{\readfilename\preprocesssuffix}}%
\or
% not found when using method 2
\let\dodoreadfileindeed\relax
\fi
\dodoreadfileindeed
\relax
\the\everyafterreadfile}
\protect \endinput
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