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%D \module
%D [ file=strc-swd,
%D version=2007.08.14,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Section Worlds,
%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 is a prelude to a rewrite of sectioning.
% options : before after setups page text number label bookmark
% dodo : listtext
%
% \startsectionworld[chapter][text={Test}]
% \stopsectionworld
\writestatus{loading}{ConTeXt Structure Macros / Sectionworlds}
\unprotect
\ifx\pushvalue\undefined
\def\pushvalue#1{\expandafter\pushmacro\csname#1\endcsname}
\def\popvalue #1{\expandafter\popmacro \csname#1\endcsname}
\fi
% brrr
\def\csnameexpanded#1#2%
{\@EA\@EA\@EA\@EA\@EA\@EA\@EA#1\@EA\@EA\@EA\@EA\@EA\@EA\@EA#2\@EA\@EA\@EA\@EA\@EA\@EA\@EA}
\def\csnameexpandedoneargument#1#2%
{\csnameexpanded\def\csexpandeda{#2}%
\@EA#1\@EA{\csexpandeda}}
\def\csnameexpandedtwoarguments#1#2#3%
{\csnameexpanded\def\csexpandeda{#2}%
\csnameexpanded\def\csexpandedb{#3}%
\@EA\@EA\@EA#1\@EA\@EA\@EA{\@EA\csexpandeda\@EA}\@EA{\csexpandedb}}
\def\csnameexpandedthreearguments#1#2#3#4%
{\csnameexpanded\def\csexpandeda{#2}%
\csnameexpanded\def\csexpandedb{#3}%
\csnameexpanded\def\csexpandedc{#4}%
\@EA\@EA\@EA\@EA\@EA\@EA\@EA#1\@EA\@EA\@EA\@EA\@EA\@EA\@EA{\@EA\@EA\@EA\csexpandeda\@EA\@EA\@EA}\@EA\@EA\@EA{\@EA\csexpandedb\@EA}\@EA{\csexpandedc}}
% \def\xx{XX}\setvalue{xx:yy}{abc \xx def}\def\param#1{\csname xx:#1\endcsname}
% \def\testa #1{\defconvertedargument\ascii{#1}{\tttf\ascii}}
% \def\testb #1#2{\defconvertedargument\ascii{#1 #2}{\tttf\ascii}}
% \def\testc#1#2#3{\defconvertedargument\ascii{#1 #2 #3}{\tttf\ascii}}
% \noindent 1 \csnameexpandedoneargument \testa{\param{yy}}
% \noindent 2 \csnameexpandedtwoarguments \testb{\param{yy}}{\param{yy}}
% \noindent 3 \csnameexpandedthreearguments\testc{\param{yy}}{\param{yy}}{\param{yy}}
% rewrite the sectioning to use the variables, a bit tricky because then
% we need a special expansion trick
\def\sectionworldparameter #1{\csname\??sw\currentsectionworldname#1\endcsname}
\def\pushsectionworldparameter#1{\expandafter\pushmacro\csname\??sw\currentsectionworldname#1\endcsname}
\def\popsectionworldparameter #1{\expandafter\popmacro \csname\??sw\currentsectionworldname#1\endcsname}
\def\setupsectionworld
{\dodoubleargument\dosetupsectionworld}
\def\dosetupsectionworld[#1][#2]%
{\getparameters[\??sw#1][#2]} % maybe some extra things
\def\dochecksectionworld#1%
{\ifcsname\??sw\currentsectionworldname\endcsname\else
\getparameters
[\??sw\currentsectionworldname]
[\c!before=,
\c!after=,
\c!setups=,
\c!page=]%
\fi}
\def\startsectionworld
{\dodoubleargument\dostartsectionworld}
\def\dostartsectionworld[#1][#2]%
{\pushmacro\currentsectionworldname
\def\currentsectionworldname{#1}%
\dochecksectionworld\currentsectionworldname
\pushsectionworldparameter\c!before
\pushsectionworldparameter\c!after
\pushsectionworldparameter\c!setups
\getparameters
[\??sw\currentsectionworldname]
[\c!text=,\c!number=\finalsectionnumber,\c!label=,\c!bookmark=,#2]%
\doifsomething{\sectionworldparameter\c!page}
{\setsectieenkoppeling\currentsectionworldname
%\handlepagebreak\currentsectionworldname
\checknexthead\handlepagebreak\currentsectionworldname}%
\sectionworldparameter\c!before
\begingroup
\doifsomething{\sectionworldparameter\c!page}
{\settrue\ignorehandlepagebreak}%
\doifsomething{\sectionworldparameter\c!setups}
{\setups[\sectionworldparameter\c!setups]}%
\csnameexpandedthreearguments \doconstructheadwithvars
{\sectionworldparameter\c!label }%
{\sectionworldparameter\c!number}%
{\sectionworldparameter\c!text }%
\doifsomething{\sectionworldparameter\c!bookmark}
{\expanded{\bookmark[\sectionworldparameter\c!bookmark]}}%
\ignorespaces} % for inline heads
\def\doconstructheadwithvars#1%#2#3%
{\dodododoconstructhead\currentsectionworldname[#1]}% {#2}{#3}}
\def\stopsectionworld
{\endgraf
\endgroup
\sectionworldparameter\c!after
\popsectionworldparameter\c!setups
\popsectionworldparameter\c!after
\popsectionworldparameter\c!before
\popmacro\currentsectionworldname}
\protect \endinput
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