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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% aoutput.sty
% ArabTeX
% Version 04.06.2000
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% (c) Klaus Lagally
% Institut fuer Informatik
% Universitaet Stuttgart
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\a@ident {aoutput.sty} {3.10 build output lines} {04.06.2000}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newdimen \a@hsize \newdimen \a@limit \newdimen \a@leftmargin
\newcount \a@prevgraf \newcount \a@@prevgraf \newbox \a@tempb@x
\def \setspace #1{\def \arab@space {\hskip #1\relax }}% redefine ?
\def \arab@space {\space \hskip 0pt plus 0.001fil \relax }
\def \def@arabstrut {\def \arab@strut {\if@vocals
%\vrule height2.5ex depth2.0ex width\z@ \relax \else
\vrule height2ex depth1.5ex width\z@ \relax \else
%\vrule height3ex depth1.5ex width\z@ \relax \else
\vrule height2ex depth1.0ex width\z@ \relax \fi }}
\def \a@parparams {% get paragraph dimensions
\ifnum \parshape = \z@ \a@hsize \hsize
\a@leftmargin \z@
\else \a@hsize \linewidth \a@leftmargin \@totalleftmargin
\fi
\a@leftmargin \z@
\a@prevgraf \z@ \spreadfalse }
\def \a@resetpar {% called by \a@par
\a@prevgraf \z@ }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% control variables for the "arabtext" environment:
%
% \the\arabtext@hook: executed when entering the environment
%
% \ifa@vmode: Arabic paragraph closed?
%
% \ifa@space: deposit a space?
%
% \ifspread: fill line by spreading the words?
%
% \ifarab: ignore Arabic script output?
%
% \a@parindent: skip at beginning of first line of paragraph
% \a@parindent: saved value from Roman mode
%
% \a@parskip: saved value from Roman mode
%
% \the\a@@everypar: token list, executed when starting a paragraph
%
% \a@oldhmode: saved value from outside
%
% \a@short@line: finish last line, close paragraph
%
% \a@put@line: deposit current line buffer, continue paragraph
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% TeX/LaTeX parameters influencing the shape of a paragraph:
%
% \hsize, \leftskip, \rightskip, \parindent, \parskip
% \parshape, \hangindent, \hangafter, \linewidth, \@totalleftmargin
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% internal control:
%
% \a@hsize = length of line buffer including \leftskip, \rightskip
% \a@limit = maximal Arabic text length
%
% \a@vmodetrue : linebuffer undefined, \a@hsize valid
% \a@vmodefalse: linebuffer valid, \a@limit valid, \a@@everypar used
%
%%%%%%%%%%%%%%%%%%%%%%% output routines %%%%%%%%%%%%%%%%%%%%%%%%%
\def \putwordb@x #1{% deposit a word
\ifa@vmode \arab@indent \fi
\setbox \wordb@x \hbox {#1}\put@word }
\def \arab@indent {% like \indent for Arabic
\ifa@vmode \putlineb@x {\hskip \a@parindent }\the\a@@everypar
\else \setbox \wordb@x \hbox {\hskip \a@parindent }\add@word \fi }
\def \arab@noindent {% like \noindent for Arabic
\ifa@vmode \initlineb@x \the\a@@everypar \fi }
\def \leavea@vmode {% like \leavevmode for Arabic
\ifa@vmode \arab@indent \fi }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def \initlineb@x {% make an empty Arabic line
\putlineb@x {\arab@strut }\a@spacefalse }
\def \putlineb@x #1{% open the line box
\a@vmodefalse \a@limit \a@hsize
\advance \a@limit -\leftskip \advance \a@limit -\rightskip
\setbox \lineb@x \hbox {#1}\a@spacefalse }
\def \add@word {% add word to line without space
\putlineb@x {\unhbox \wordb@x \unhbox \lineb@x }}
\def \addt@line {% add word to line unconditionally, spacing ?
\ifa@space \putlineb@x
{\unhcopy \wordb@x \arab@space \unhcopy \lineb@x }%
\else \add@word \fi }
\def \put@word {% add word to line, spacing, break line if necessary
\setbox \a@tempb@x \hbox
{\unhcopy \wordb@x \ifa@space \arab@space \fi \unhcopy \lineb@x }%
\ifdim \a@limit < \wd\lineb@x \put@line \add@word \else
\ifdim \a@limit < \wd\a@tempb@x \put@line \add@word \else
\setbox \lineb@x \box \a@tempb@x
\fi\fi }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def \put@line {% output the line, adjusted
\ifarab \setbox\a@tempb@x \hbox to \a@hsize
{\hskip \rightskip \arab@strut
\charsubdefmax \m@ne \unhbox \lineb@x \hskip \leftskip }%
\put@ab@x
\fi \ifnum \tracingarab > 1 \message {|}\fi }
\def \short@line{% put line without adjustment, close line
\ifarab \ifdim \wd\lineb@x = \z@ \else
\ifspread \dimen0 \a@limit \divide \dimen0 8
\dimen2 \a@limit \advance \dimen2 -\wd\lineb@x
\setbox\a@tempb@x \hbox to \a@hsize
{\hskip \rightskip
\loop \hskip \parfillskip \advance \dimen2 -\dimen0
\ifdim \dimen2 > \z@ \repeat
\arab@strut \charsubdefmax \m@ne
\unhbox \lineb@x \hskip \leftskip }%
\else \setbox\a@tempb@x \hbox to \a@hsize
{\hskip \rightskip \hskip \parfillskip
\arab@strut \charsubdefmax \m@ne
\unhbox \lineb@x \hskip \leftskip }%
\fi \put@ab@x
\fi\fi
\ifnum \tracingarab > 1 \message {/}\fi }
\def \put@ab@x {% deposit line
\ifhmode \unskip {\endgraf }\penalty \clubpenalty
\parindent \z@ \parskip \z@ \else
\ifnum \a@prevgraf = \z@ \else \penalty \widowpenalty
\fi\fi
\begingroup \parfillskip 0pt plus 1fill
\leftskip \z@ \rightskip \z@ \noindent
\ifdim \a@leftmargin = \z@ \else \hskip \a@leftmargin \fi
\box\a@tempb@x \endgraf
\endgroup \parindent \z@ \parskip \z@ \initlineb@x
\advance \a@prevgraf \@ne \a@@prevgraf \prevgraf
\advance \a@@prevgraf \@ne \prevgraf \a@@prevgraf }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\let \a@par@hook \relax % reserved
\def \testoutput {% show output box
\showboxbreadth = \maxdimen \showboxdepth = 6
\message {"testoutput" activated.}
\tracingoutput = 1 }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\endinput
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% EOF %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
