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%D \module
%D [ file=m-chemml,
%D version=2001.09.12,
%D title=\CONTEXT\ XML Modules,
%D subtitle=Loading \CHEMML\ Filters,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE / 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.
\useXMLfilter[cml]
%D Structural formulas are codes in a \PPCHTEX\ way; this
%D will change -)
%D
%D \startbuffer
%D <dchem>
%D <structure>
%D <component>
%D <graphic>SIX,B</graphic>
%D <graphic>R135</graphic>
%D </component>
%D <component>
%D <graphic>R246</graphic>
%D </component>
%D <component>
%D <graphic>RZ</graphic>
%D <text>A,B,C,D,E,F</text>
%D </component>
%D <component>
%D <graphic>Z</graphic>
%D <oxidation n="3">A</oxidation>
%D <text>A</text>
%D <annotation location="t">
%D <text>B</text>
%D <caption>x<context:b>x<context:compound token="*"/>x</context:b>x</caption>
%D </annotation>
%D <oxidation n="3" sign="+">B</oxidation>
%D <text>C,D,E,F</text>
%D </component>
%D </structure>
%D <structure>
%D <component>
%D <graphic>SIX,B</graphic>
%D <graphic>r135</graphic>
%D </component>
%D <component>
%D <graphic>R246</graphic>
%D </component>
%D <component>
%D <graphic>RZ</graphic>
%D <text>A,B,C,D,E,F</text>
%D </component>
%D </structure>
%D </dchem>
%D \stopbuffer
%D
%D \typebuffer
% \ifx\XMLgtoks\undefined \newtoks\XMLgtoks \fi
% \ifx\XMLttoks\undefined \newtoks\XMLttoks \fi
%
% \defineXMLenvironment [structure]
% {\startchemical\ignorespaces}
% {\relax\stopchemical}
%
% \def\chemicalXMLg#1% \defineXMLcollect [graphic] \XMLgtoks
% {\doifelsenothing{\the\XMLgtoks}
% {\doglobal\appendtoks #1\to\XMLgtoks\ignorespaces}
% {\doglobal\appendtoks,#1\to\XMLgtoks\ignorespaces}}
%
% \def\chemicalXMLt#1%
% {\doifelsenothing{\the\XMLttoks}
% {\doglobal\appendtoks #1\to\XMLttoks\ignorespaces}
% {\doglobal\appendtoks,#1\to\XMLttoks\ignorespaces}}
%
% \defineXMLenvironment [component] [type=]
% {\global\XMLgtoks\emptytoks
% \global\XMLttoks\emptytoks
% \defineXMLargument[graphic]\chemicalXMLg
% \defineXMLargument[text]\chemicalXMLt
% \ignorespaces}
% {\expanded{\chemical[\the\XMLgtoks][\the\XMLttoks]}%
% \ignorespaces}
%
% \defineXMLargument [oxidation] [sign=,n=1] \chemicalXMLo % +/- 1..7
%
% \def\chemicalXMLo#1%
% {\expanded{\chemicalXMLt
% {\noexpand\chemicaloxidation{\XMLop{sign}}{\XMLop{n}}{#1}}}%
% \ignorespaces}
%
% \defineXMLenvironment [annotation] [location=]
% {\bgroup
% \defineXMLenvironmentsave[text]{\ignorespaces}{\ignorespaces}%
% \defineXMLenvironmentsave[caption]{\ignorespaces}{\ignorespaces}%
% \ignorespaces}
% {\scratchtoks{\chemicalright}%
% \processaction
% [\XMLop{location}]
% [ t=>\scratchtoks{\chemicaltop},
% b=>\scratchtoks{\chemicalbottom},
% l=>\scratchtoks{\chemicalleft},
% r=>\scratchtoks{\chemicalright},
% lc=>\scratchtoks{\chemicalleftcentered},
% rc=>\scratchtoks{\chemicalrightcentered},
% tl=>\scratchtoks{\chemicaltopleft},
% bl=>\scratchtoks{\chemicalbottomleft},
% tr=>\scratchtoks{\chemicaltopright},
% br=>\scratchtoks{\chemicalbottomright},
% lt=>\scratchtoks{\chemicallefttop},
% lb=>\scratchtoks{\chemicalleftbottom},
% rt=>\scratchtoks{\chemicalrighttop},
% rb=>\scratchtoks{\chemicalrightbottom},
% x=>\scratchtoks{\chemicaltighttext},
% sl=>\scratchtoks{\chemicalsmashedleft},
% sm=>\scratchtoks{\chemicalsmashedmiddle},
% sr=>\scratchtoks{\chemicalsmashedright}]%
% \expanded{\chemicalXMLt
% {\the\scratchtoks{\XMLflush{text}}{\XMLflush{caption}}}}%
% \egroup
% \ignorespaces}
%
% \defineXMLenvironment [forever]
% {\chemicalXMLt{\[}\ignorespaces}
% {\chemicalXMLt{\]}\ignorespaces}
\ifx\XMLgtoks\undefined \newtoks\XMLgtoks \fi
\ifx\XMLttoks\undefined \newtoks\XMLttoks \fi
\startXMLmapping [cml]
% this will be a more natural method; this also triggers it
\installXMLunknownremapping
% extensions
\remapXMLsequence [structure] [CPA] \doCMLstructure
\remapXMLsequence [component] [CPA] \doCMLcomponent
\remapXMLsequence [graphic] [CPA] \doCMLgraphic
\remapXMLsequence [text] [CPA] \doCMLtext
\remapXMLsequence [caption] [CPA] \doCMLcaption
\remapXMLsequence [oxidation] [CPA] \doCMLoxidation
\remapXMLsequence [annotation][CPA] \doCMLannotation
\remapXMLsequence [forever] [CPA] \doCMLforever
\def\doCMLstructure#1#2%
{\startchemical\ignorespaces#2\unskip\stopchemical}
\def\doCMLgraphic#1#2%
{\doifelsenothing{\the\XMLgtoks}
{\uppercase{\doglobal\appendtoks #2\to\XMLgtoks\ignorespaces}}
{\uppercase{\doglobal\appendtoks,#2\to\XMLgtoks\ignorespaces}}%
\ignorespaces}
\def\doCMLtext#1#2%
{\doifelsenothing{\the\XMLttoks}
{\doglobal\appendtoks #2\to\XMLttoks\ignorespaces}
{\doglobal\appendtoks,#2\to\XMLttoks\ignorespaces}%
\ignorespaces}
\def\doCMLcomponent#1#2%
{\global\XMLgtoks\emptytoks
\global\XMLttoks\emptytoks
\ignorespaces#2\unskip
\expanded{\chemical[\the\XMLgtoks][\the\XMLttoks]}%
\ignorespaces}
\def\doCMLannotation#1#2%
{\getXMLarguments{cml}{location="" #1}%
\def\dodoCMLannotation##1%
{\doCMLtext\empty{##1%
{\let\doCMLtext \secondoftwoarguments\processXMLRchild{text}{#2}}%
{\let\doCMLcaption\unmapXMLdata \processXMLRchild{caption}{#2}}}}%
\processaction
[\XMLpar{cml}{location}{r}]
[ t=>\dodoCMLannotation\chemicaltop,
b=>\dodoCMLannotation\chemicalbottom,
l=>\dodoCMLannotation\chemicalleft,
r=>\dodoCMLannotation\chemicalright,
lc=>\dodoCMLannotation\chemicalleftcentered,
rc=>\dodoCMLannotation\chemicalrightcentered,
tl=>\dodoCMLannotation\chemicaltopleft,
bl=>\dodoCMLannotation\chemicalbottomleft,
tr=>\dodoCMLannotation\chemicaltopright,
br=>\dodoCMLannotation\chemicalbottomright,
lt=>\dodoCMLannotation\chemicallefttop,
lb=>\dodoCMLannotation\chemicalleftbottom,
rt=>\dodoCMLannotation\chemicalrighttop,
rb=>\dodoCMLannotation\chemicalrightbottom,
x=>\dodoCMLannotation\chemicaltighttext,
sl=>\dodoCMLannotation\chemicalsmashedleft,
sm=>\dodoCMLannotation\chemicalsmashedmiddle,
sr=>\dodoCMLannotation\chemicalsmashedright]%
\ignorespaces}
\def\doCMLoxidation#1#2%
{\getXMLarguments{cml}{sign="" n="1" #1}%
\expanded{\doCMLtext{}%
{\noexpand\chemicaloxidation{\XMLpar{cml}{sign}{}}{\XMLpar{cml}{n}{}}{#2}}}%
\ignorespaces}
\def\doCMLforever#1#2{\[#2\]}
\stopXMLmapping
\endinput
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