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%D \module
%D [ file=lang-ini,
%D version=1996.01.25,
%D title=\CONTEXT\ Language Macros,
%D subtitle=Initialization,
%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.
\unprotect
\def\mkdoloadpatterns#1#2%
{\expanded{\getcommacommandsize[\getvalue{\??la#2\s!encoding}]}%
\ifnum\commalistsize>0
%\message{[nofpatterns #2: \commalistsize/\getvalue{\??la#2\s!encoding}]}%
\dorecurse\commalistsize
{\expanded{\getfromcommacommand[\getvalue{\??la#2\s!encoding}][\recurselevel]}%
\let\patternencoding\commalistelement
\expanded{\getfromcommacommand[\getvalue{\??la#2\s!mapping }][\recurselevel]}%
\let\patternmapping \commalistelement
%\message{[patterns: #1/#2/\patternencoding/\patternmapping]}%
\dodoloadpatterns{#1}{#2}\patternencoding\patternmapping}%
\else
%\message{[patterns: #1/#2]}%
\dodoloadpatterns{#1}{#2}{}{}%
\fi}
\def\setuphyppatencoding
{\pathypsettings
\enableregime[utf]}
\def\dodoloadpatterns#1#2#3#4% beware, loaded language also incr
{\normallanguage\loadedlanguage % when not really needed
\bgroup
\let\synchronizepatterns\relax % needed?
\let\enabledmapping \empty % needed?
\doifelsenothing{#3}{\enableencoding[\s!default]}{\enableencoding[#3]}%
\doifelsenothing{#4}{\enablemapping [\s!default]}{\enablemapping [#4]}%
\setuphyppatencoding
\ifundefined{\??la\??la:\currentencoding:\currentmapping:#2}%
\let\doshowpatterns\relax
\edef\alreadyloadedlanguage
{\executeifdefined{\??la\??la:\currentencoding:\currentmapping:\truefilename{\f!languageprefix#2.\f!patternsextension}}\empty}%
\edef\alreadyloadedlanguage
{\executeifdefined{\??la\??la:\currentencoding:\currentmapping:\f!languageprefix#2.\f!patternsextension}\alreadyloadedlanguage}%
\ifx\alreadyloadedlanguage\empty
\letgvalue{\??la\??la:\currentencoding:\currentmapping:#2}\loadedlanguage
\doifundefined{\??la\??la:\s!default:\s!default:#2}{\letgvalue{\??la\??la:\s!default:\s!default:#2}\loadedlanguage}% fall back
\startpatternloading{\truefilename{\f!languageprefix#2.\f!patternsextension}}{#3}{#4}%
\readsysfile{\truefilename{\f!languageprefix#2.\f!patternsextension}}
{\setxvalue{\??la#1\s!patterns}{#2}%
\setxvalue{\??la\??la:\currentencoding:\currentmapping:\truefilename{\f!languageprefix#2.\f!patternsextension}}{\number\loadedlanguage}%
\xdef\preloadedpmessage{\preloadedpmessage\doshowpatterns{#2}{\number\normallanguage}{\currentencoding}{\currentmapping}}%
\doglobal\addtocommalist{#2}\preloadedpatterns
\showmessage\m!linguals1{#2,#1,\loadedlanguage,\currentencoding,\currentmapping}}
{\showmessage\m!linguals2{#2,#1,\loadedlanguage,\currentencoding,\currentmapping,\f!languageprefix#2.\f!patternsextension,\truefilename{\f!languageprefix#2.\f!patternsextension}}}%
\stoppatternloading
\startpatternloading{\truefilename{\f!languageprefix#2.\f!hyphensextension}}{#3}{#4}%
\readsysfile{\truefilename{\f!languageprefix#2.\f!hyphensextension}}
{\showmessage\m!linguals3{#2,#1,\loadedlanguage,\currentencoding,\currentmapping}}
{\showmessage\m!linguals4{#2,#1,\loadedlanguage,\currentencoding,\currentmapping}}%
\stoppatternloading
\doglobal\increment\loadedlanguage
% \stopencoding
\else % optimization, introduced 2004.08.24, while sorting out changes in tl
\letgvalue{\??la\??la:\currentencoding:\currentmapping:#2}\alreadyloadedlanguage
\doifundefined{\??la\??la:\s!default:\s!default:#2}{\letgvalue{\??la\??la:\s!default:\s!default:#2}\loadedlanguage}% fall back
\setxvalue{\??la#1\s!patterns}{#2}%
\xdef\preloadedpmessage{\preloadedpmessage\doshowpatterns{#2}{[\number\alreadyloadedlanguage]}{\currentencoding}{\currentmapping}}%
\doglobal\addtocommalist{#2}\preloadedpatterns
\showmessage\m!linguals1{#2,#1,[\alreadyloadedlanguage],\currentencoding,\currentmapping}%
\fi
\fi
\egroup}
%D Since we can only load patterns in ini\TeX, we nil the
%D loading before dumping (which saves a bit of memory, but
%D strangely enough not in the format).
\appendtoks
\gdef\doloadpatterns{\doglobal\increment\loadedlanguage\gobbletwoarguments}%
\globallet\dodoloadpatterns\gobblefourarguments
\to \everydump
\def\mkdoifpatternselse#1%
{\expanded{\doifinsetelse{#1}{\preloadedpatterns}}}
\def\mksetnormallanguage#1#2% current default
{% called quite often, so we use \csname
% \def\synchronizepatterns{\setnormallanguage
% {\csname\??la\currentlanguage\s!patterns\endcsname}}% called often
% of even better pre-expand in an ugly way:
\@EA\def\@EA\synchronizepatterns\@EA{\@EA\dosetnormallanguage
\csname\??la\currentlanguage\s!patterns\endcsname}%
\donefalse
\synchronizepatterns
\ifdone\else
\def\synchronizepatterns{\dosetnormallanguage\currentlanguage}%
\synchronizepatterns
\ifdone\else
\ifx\currentdefaultlanguage\empty\else
\@EA\def\@EA\synchronizepatterns\@EA{\@EA\dosetnormallanguage
\csname\??la\currentdefaultlanguage\s!patterns\endcsname}%
\synchronizepatterns
\ifdone\else
\dosetnormallanguage\currentdefaultlanguage
\synchronizepatterns
\fi
\fi
\fi
\fi}
\def\dosetnormallanguage#1% #1 == \cs
{\dodosetnormallanguage{:\currentencoding:\currentmapping:}#1{%
\dodosetnormallanguage{:\currentencoding:\s!default :}#1{%
\dodosetnormallanguage{:\s!default :\currentmapping:}#1{%
\dodosetnormallanguage{:\s!default :\s!default :}#1\empty}}}}
\def\dodosetnormallanguage#1#2%
{\ifcsname\??la\??la#1#2\endcsname
\edef\thenormallanguage{\csname\??la\??la#1#2\endcsname}% can be \chardef
\ifx\thenormallanguage\empty
\@EAEAEA\firstofoneargument
\else
\donetrue
\@EA\xdef\csname\??la\currentlanguage\s!patterns\endcsname{#2}%
\normallanguage\thenormallanguage\relax % \relax is needed for lookahead problems
\@EAEAEA\gobbleoneargument
\fi
\else
\@EA\firstofoneargument
\fi}
\beginXETEX
\def\synchronizepatternswithfont{}
\def\doloadpatterns #1#2{\dodoloadpatterns{#1}{#2}\s!default\s!default}
\def\setnormallanguage #1{\dosetnormallanguage{:\s!default:\s!default:}#1\empty}
\def\setuphyppatencoding {\pathypsettings}
\endXETEX
\protect \endinput
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