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+%D \module
+%D [ file=core-sys, % moved from main-001
+%D version=1997.03.31,
+%D title=\CONTEXT\ Core Macros,
+%D subtitle=System,
+%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.
+
+\writestatus{loading}{ConTeXt Core Macros / System}
+
+\unprotect
+
+%D Version checking:
+
+\def\newcontextversion#1%
+ {\doifelse{#1}\contextversion
+ {\let\newcontextversion\gobbleoneargument}
+ {\writeline
+ \writestatus{Fatal Error}{Your format does not match the base files!}%
+ \writeline
+ \writestatus{Format Version}{\contextversion\space\contextmark}%
+ \writestatus{Files Version}{#1}%
+ \batchmode
+ \normalend}}
+
+%D End of lines to the output. \TEX\ will map this onto the platform specific
+%D line ending. I hate this mess.
+
+%newlinechar=10 \def\outputnewlinechar{\rawcharacter{10}}
+\newlinechar=10 \edef\outputnewlinechar{^^J}
+
+% in case formats are shared:
+
+\def\initializenewlinechar
+ {\bgroup\newlinechar=10\xdef\outputnewlinechar{^^J}\egroup}
+
+%D Job names.
+
+\def\outputfilename {\@@svfile}
+\def\inputfilename {\@@svinputfile}
+\def\operatingsystem{\@@svtype}
+
+\let\jobfilename \jobname
+\let\jobfilesuffix\c!tex
+
+\def\splitjobfilename % todo: mkiv
+ {\resetsystemmode{suffix-\jobfilesuffix}%
+ \edef\ascii{\inputfilename}\defconvertedcommand\ascii\ascii
+ \splitstring\ascii\at.\to\jobfilename\and\jobfilesuffix
+ \lowercasestring\jobfilesuffix\to\jobfilesuffix
+ \doifnothing\jobfilename {\let\jobfilename \jobname}%
+ % todo and totest: \defconvertedcommand\jobfilename\jobfilename
+ \doifnothing\jobfilesuffix{\let\jobfilesuffix\c!tex}%
+ \setsystemmode{suffix-\jobfilesuffix}}
+
+% Some mechanisms (see x-res-01) use either \jobfilename or
+% \jobfilename.somesuffix, in which case we need to use the
+% full name if given or a default (like \jobfilename.xml);
+% this comes down to replacing the default tex suffix.
+
+\def\jobfullname{\jobfilename.\jobfilesuffix}
+
+\def\setjobfullname#1% #1 = default if not given
+ {\doifelsenothing\jobfilename
+ {\let\jobfullname\empty}
+ {\doif\jobfilesuffix\c!tex{\edef\jobfullname{\jobfilename.#1}}}}
+
+% ...
+
+\def\dosetupsystem[#1]%
+ {\getparameters[\??sv][#1]%
+ \setuprandomize[\@@svrandom]%
+ \beforesplitstring\@@svresolution\at dpi\to\@@svresolution
+ \let\outputresolution\@@svresolution
+ \ifcase\@@svn
+ % % 0 : unknown
+ \or
+ \setsystemmode\v!first % 1 : first run
+ \or
+ % % 2 : successive run
+ \or
+ \setsystemmode\v!first % 3 : first and only run
+ \or
+ \setsystemmode\v!last % 4 : (extra) last run
+ \fi
+% \processaction
+% [\@@svtype]
+% %[ mswin=>\edef\@@svline{\rawcharacter{13}\rawcharacter{10}}, % crlf
+% [ mswin=>\edef\@@svline{\rawcharacter{13}}, % cr % crlf
+% darwin=>\edef\@@svline{\rawcharacter{13}}, % cr
+% \s!unknown=>\edef\@@svline{\rawcharacter{10}}]% % lf
+ \splitjobfilename}
+
+% \edef\@@svline{\rawcharacter{10}} % unix is the most critical/sensitive system
+
+\let\systemendofline\outputnewlinechar % will become obsolete
+
+\def\setupsystem
+ {\dosingleargument\dosetupsystem}
+
+\def\systemparameter#1{\executeifdefined{\??sv#1}\empty}
+
+%D The system modes set by the setup command can be used in
+%D situations like:
+%D
+%D \starttyping
+%D \startmode[*first]
+%D \executesystemcommand{cleanupxml text.xml clean-text.xml}
+%D \stopmode
+%D
+%D \starttext
+%D \typefile{clean-text.xml}
+%D \stoptext
+%D \stoptyping
+
+\def\setuprandomize[#1]%
+ {\doifsomething{#1}
+ {\bgroup
+ % tex's time is in minutes
+ \scratchcounter\normaltime
+ \processaction
+ [#1]
+ [ \v!small=>\divide\scratchcounter 15, % 900,
+ \v!medium=>\divide\scratchcounter 30, % 1800,
+ \v!big=>\divide\scratchcounter 60, % 3600,
+ \v!normal=>\getnewrandomseed\scratchcounter,
+ \s!default=>\getnewrandomseed\scratchcounter,
+ \s!unknown=>\scratchcounter#1]%
+ \expanded{\setrandomseed{\the\scratchcounter}}%
+% \writestatus\m!systems{randomseed: \the\scratchcounter}%
+ \egroup}}
+
+
+\setupsystem
+ [\c!directory=,
+ \c!n=0, % 0:unknown 1: one run 2: first 3: successive 4: final run
+ \c!resolution=600dpi,
+ \c!random=,
+ \c!file=\jobname,
+ \c!inputfile=\outputfilename,
+ \c!type=unix, % windows is normally less sensitive to handle
+ \c!bodyfont=\normalizedlocalbodyfontsize] % of iets anders
+
+%D Remark: windows programs normally handle \type {cr|lf|crlf} but unix
+%D is more picky, so we default to the \type {cr}. I never understood why
+%D \type {crlf} was not used in all systems, since it makes most sense.
+
+\def\dostartglobaldefs#1#2%
+ {\edef\!!stringa{\the\globaldefs}%
+ \ifnum\globaldefs#10
+ \globaldefs-\globaldefs
+ \fi
+ \advance\globaldefs #21
+ \setevalue{@gd@\the\globaldefs}{\!!stringa}}
+
+\def\dostopglobaldefs
+ {\doifdefinedelse{@gd@\the\globaldefs}
+ {\globaldefs\getvalue{@gd@\the\globaldefs}\relax}
+ {\globaldefs\zerocount}}
+
+\def\startlocal {\dostartglobaldefs>-}
+\def\stoplocal {\dostopglobaldefs}
+\def\startglobal {\dostartglobaldefs<+}
+\def\stopglobal {\dostopglobaldefs}
+
+\def\complexstart[#1]{\bgroup\getvalue{\e!start#1}}
+\def\complexstop [#1]{\getvalue{\e!stop #1}\egroup}
+
+\let\simplestart\bgroup
+\let\simplestop \egroup
+
+\definecomplexorsimple\start
+\definecomplexorsimple\stop
+
+\def\dododefinestartstop[#1][#2]% todo: use indirect commands
+ {\getparameters
+ [\??be#1]
+ [\c!before=,
+ \c!after=,
+ \c!inbetween=,
+ \c!commands=,
+ \c!style=,
+ #2]%
+ \unexpanded\setvalue{#1}%
+ {\groupedcommand
+ {\getvalue{\??be#1\c!commands}%
+ \dostartattributes{\??be#1}\c!style\c!color}
+ {\dostopattributes
+ \getvalue{\??be#1\c!inbetween}}}%
+ \setvalue{\e!start#1}%
+ {\getvalue{\??be#1\c!before}%
+ \bgroup
+ \getvalue{\??be#1\c!commands}%
+ \dostartattributes{\??be#1}\c!style\c!color\empty}%
+ \setvalue{\e!stop#1}%
+ {\dostopattributes
+ \egroup
+ \getvalue{\??be#1\c!after}}}
+
+\def\dodefinestartstop[#1][#2]%
+ {\def\docommand##1{\dododefinestartstop[##1][#2]}%
+ \processcommalist[#1]\docommand}
+
+\def\definestartstop
+ {\dodoubleargument\dodefinestartstop}
+
+\def\dosetupstartstop[#1][#2]%
+ {\def\docommand##1{\getparameters[\??be##1][#2]}%
+ \processcommalist[#1]\docommand}
+
+\def\setupstartstop
+ {\dodoubleargument\dosetupstartstop}
+
+% \docommand kan niet worden gebruikt omdat deze macro
+% soms lokaal wordt gebruikt
+
+% te zijner tijd:
+%
+% \definevariable {pc} % ProtectedCommand
+%
+% \def\executeprotected#1%
+% {\csname\??pc\string#1\endcsname}
+%
+% \def\defineprotected#1#2%
+% {\expandafter\def\csname\??pc\string#2\endcsname}
+%
+% \def\defineunprotected#1%
+% {\def#1}
+%
+% \def\doprotected%
+% {\ifx\next\define
+% \let\next=\defineprotected
+% \else
+% \let\next=\executeprotected
+% \fi
+% \next}
+%
+% \def\unexpanded%
+% {\futurelet\next\doprotected}
+%
+% \unexpanded\define\ziezo{ziezo}
+%
+% \unexpanded\ziezo
+
+\def\complexdefine[#1]#2#3%
+ {\ifx#2\undefined
+ \else
+ \showmessage\m!systems4{\string#2}%
+ \fi
+ \ifcase0#1\def#2{#3}%
+ \or\def#2##1{#3}%
+ \or\def#2##1##2{#3}%
+ \or\def#2##1##2##3{#3}%
+ \or\def#2##1##2##3##4{#3}%
+ \or\def#2##1##2##3##4##5{#3}%
+ \or\def#2##1##2##3##4##5##6{#3}%
+ \or\def#2##1##2##3##4##5##6##7{#3}%
+ \or\def#2##1##2##3##4##5##6##7##8{#3}%
+ \or\def#2##1##2##3##4##5##6##7##8##9{#3}%
+ \else\def#2{#3}%
+ \fi}
+
+\definecomplexorsimpleempty\define
+
+\unexpanded\def\macroname#1% brrr
+ {\executeifdefined{#1}\empty}
+
+\def\usecommands#1%
+ {\bgroup
+ \def\docommand##1{\setbox0\hbox{\getvalue{\string##1}##1}}%
+ \processcommalist[#1]\docommand
+ \egroup}
+
+\newif\ifforcefileexpansion % handy for document level overload
+
+%D The next implementation is about 4 times as faster than a
+%D processaction alternative on an string of average length.
+%D Since this feature is used in XML processing, it made sense
+%D to support this faster alternative. It's installable as well.
+
+\def\installexpander#1#2#3% changed, no longer \convert..\to...
+ {\setvalue{\s!do\c!expansion#1l}{#2}%
+ \setvalue{\s!do\c!expansion#1g}{#3}}%
+
+% \convertexpanded is obsolete
+
+\long\def\doconvertexpanded#1#2#3% #4 % [l|g] \cs {kind} {data}
+ {\csname % that we assign all exp a value
+ \s!do\c!expansion
+ \ifforcefileexpansion
+ \v!yes
+ \else\ifcsname\s!do\c!expansion#3#1\endcsname
+ #3%
+ \else
+ \s!default
+ \fi\fi
+ #1%
+ \endcsname#2}% #3
+
+\long\def\defconvertexpanded {\doconvertexpanded l}
+\long\def\gdefconvertexpanded{\doconvertexpanded g}
+
+\installexpander\v!command \defconvertedcommand \gdefconvertedcommand
+\installexpander\s!default \defconvertedargument \gdefconvertedargument
+\installexpander\empty \defconvertedargument \gdefconvertedargument
+\installexpander\v!no \defconvertedargument \gdefconvertedargument
+\installexpander\v!yes \defconvertedmeaning \gdefconvertedmeaning
+\installexpander\v!yes \defconvertedmeaning \gdefconvertedmeaning
+\installexpander\v!strict \defreducedargument \gdefreducedargument
+\installexpander {utf} \defreducedtoutf \gdefreducedtoutf
+
+%installexpander {xml} {see xtag-ext}
+
+\def\dodefconvertedmeaning#1#2#3% watch the double expansion !
+ {\bgroup
+ \honorunexpanded
+ \convertencodedtokens % can be overloaded
+ \xdef\@@globalexpanded{#3}%
+ \xdef\@@globalexpanded{\@@globalexpanded}%
+ \egroup
+ #1#2\@@globalexpanded}
+
+\def\defconvertedmeaning {\dodefconvertedmeaning\defconvertedcommand}
+\def\gdefconvertedmeaning{\dodefconvertedmeaning\gdefconvertedcommand}
+
+\def\dodefreducedargument#1#2#3%
+ {\begingroup
+ \reducetocoding[raw]%
+ \edef\ascii{#3}%
+ \expandafter\endgroup\expandafter#1\expandafter#2\expandafter{\ascii}}
+
+\def\defreducedargument {\dodefreducedargument\edef}
+\def\gdefreducedargument{\dodefreducedargument\xdef}
+
+% \setupindex[expansion=utf]\index{\eacute}
+
+\def\dodefreducedtoutf#1#2#3%
+ {\begingroup
+ \reducetocoding[uc]%
+ \let\uchar\uchartoutf
+ \let\unicodechar\numbertoutf
+ \edef\ascii{#3}%
+ \expandafter\endgroup\expandafter#1\expandafter#2\expandafter{\ascii}}
+
+\def\defreducedtoutf {\dodefreducedtoutf\edef}
+\def\gdefreducedtoutf{\dodefreducedtoutf\xdef}
+
+% old syntax:
+
+\def\convertmeaning#1\to#2% watch the double expansion !
+ {\bgroup
+ \honorunexpanded
+ \convertencodedtokens % can be overloaded
+ \xdef\@@globalexpanded{#1}%
+ \xdef\@@globalexpanded{\@@globalexpanded}%
+ \egroup
+ \defconvertedcommand#2\@@globalexpanded}
+
+\def\reduceargument#1\to#2%
+ {\begingroup
+ \reducetocoding[raw]%
+ \edef\ascii{#1}%
+ \expandafter\endgroup\expandafter\edef\expandafter#2\expandafter{\ascii}}
+
+\def\reducetoutf#1\to#2%
+ {\begingroup
+ \reducetocoding[uc]%
+ \let\uchar\uchartoutf
+ \let\unicodechar\numbertoutf
+ \edef\ascii{#1}%
+ \expandafter\endgroup\expandafter\edef\expandafter#2\expandafter{\ascii}}
+
+% \setvalue{statevalue\v!stop }{0}
+% \setvalue{statevalue\v!start }{1}
+% \setvalue{statevalue\v!normaal}{2}
+% \setvalue{statevalue\v!leeg }{3}
+% \setvalue{statevalue\v!geen }{4}
+%
+% \def\setcurrentstate#1%
+% {\chardef\currentstate=0\getvalue{statevalue\getvalue{#1\c!state}\relax}
+%
+% \ifcase\currentstate ...
+
+\def\redo{\dorepeat} % [n*10], kind of obsolete
+
+% obsolete, use \dorecurse instead
+%
+% \def\herhaler {\repeater}
+% \def\herhaalmetcommando {\dorepeatwithcommand}
+
+\protect \endinput