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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ltxindex.sty, a LaTeX package to typeset indices with GNU's Texindex
% Copyright (C) 2004 by Jose-Luis Rivera
%
% This program is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2, or (at your option)
% any later version.
%
% This program is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with this program; if not, write to the Free Software
% Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% WARNING!!! This code is fairly experimental. %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
\NeedsTeXFormat{LaTeX2e}[1995/06/01]
\ProvidesPackage{ltxindex}
[2004/06/30 v0.1]
\message{indexing, texindex style}
\RequirePackage{multicol}
% Index generation facilities
% Define the texinfo user-accessible indexing commands for backwards
% compatability.
\def\cindex{\cpindex}
\def\pindex{\pgindex}
\def\vindex{\vrindex}
\def\tindex{\tpindex}
\def\kindex{\kyindex}
\def\findex{\fnindex}
% \newindex {foo} defines an index named foo.
% It automatically defines \fooindex such that
% \fooindex ...rest of line... puts an entry in the index foo.
% It also defines \fooindfile to be the number of the output channel for
% the file that accumulates this index. The file's extension is foo.
% The name of an index should be no more than 2 characters long
% for the sake of vms.
\def\newindex#1{\csname newindex#1\endcsname}
% Yes I know this could be done shorter, but safer??
\def\newindexcp{\if@filesw \newwrite\@cpindexfile
\immediate\openout\@cpindexfile=\jobname.cp
\def\cpindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@cpindexfile}%
\def\cpsubindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrsubindex\@cpindexfile}%
\def\cpindexbold{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindexbold\@cpindexfile}
\typeout{Writing concepts index file \jobname.cp }%
\fi}
\def\cpindex{\@bsphack\begingroup \@sanitize\@index}
\def\cpsubindex{\@bsphack\begingroup \@sanitize\@index}
\def\cpindexbold{\@bsphack\begingroup \@sanitize\@index}
\def\@wrindex#1#2{\let\thepage\relax
\xdef\@gtempa{\write#1{\string \entry{#2}{\thepage}{#2}}}\endgroup
\def\@tempa{}\def\thing{#2}\ifx\thing\@tempa\relax\else\@gtempa\fi
\if@nobreak \ifvmode\nobreak\fi\fi\@esphack}
\def\@wrindexbold#1#2{\let\thepage\relax \let\bf\relax
\xdef\@gtempa{\write#1{\string \entry{#2}{\b{\thepage}}{#2}}}\endgroup
\def\@tempa{}\def\thing{#2}\ifx\thing\@tempa\relax\else\@gtempa\fi
\if@nobreak \ifvmode\nobreak\fi\fi\@esphack}
\def\@wrsubindex#1#2#3{\let\thepage\relax
\xdef\@gtempa{\write#1{\string \entry{#2 #3}{\thepage}{#2}{#3}}}\endgroup%
\@gtempa
\if@nobreak \ifvmode\nobreak\fi\fi\@esphack}
\def\@index#1{\endgroup\@esphack}
\def\pgindex{\@bsphack\begingroup \@sanitize\@index}
\def\newindexpg{\if@filesw \newwrite\@pgindexfile
\immediate\openout\@pgindexfile=\jobname.pg
\def\pgindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@pgindexfile}
\def\pgindexbold{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindexbold\@pgindexfile}
\typeout{Writing index file \jobname.pg }\fi}
\def\pgindex{\@bsphack\begingroup \@sanitize\@index}
\def\pgindexbold{\@bsphack\begingroup \@sanitize\@index}
\def\newindexvr{\if@filesw \newwrite\@vrindexfile
\immediate\openout\@vrindexfile=\jobname.vr
\def\vrindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@vrindexfile}
\def\vrindexbold{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindexbold\@vrindexfile}
\typeout{Writing variable index file \jobname.vr }\fi}
\def\vrindex{\@bsphack\begingroup \@sanitize\@index}
\def\vrindexbold{\@bsphack\begingroup \@sanitize\@index}
\def\newindextp{\if@filesw \newwrite\@tpindexfile
\immediate\openout\@tpindexfile=\jobname.tp
\def\tpindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@tpindexfile}
\def\tpindexbold{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindexbold\@tpindexfile}
\typeout{Writing datatype index file \jobname.tp }\fi}
\def\tpindex{\@bsphack\begingroup \@sanitize\@index}
\def\tpindexbold{\@bsphack\begingroup \@sanitize\@index}
\def\newindexky{\if@filesw \newwrite\@kyindexfile
\immediate\openout\@kyindexfile=\jobname.ky
\def\kyindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@kyindexfile}\typeout{Writing key index file \jobname.ky }\fi}
\def\kyindex{\@bsphack\begingroup \@sanitize\@index}
\def\kyindexbold{\@bsphack\begingroup \@sanitize\@index}
\def\newindexfn{\if@filesw \newwrite\@fnindexfile
\immediate\openout\@fnindexfile=\jobname.fn
\def\fnindex{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindex\@fnindexfile}
\def\fnindexbold{\@bsphack\begingroup
\def\protect####1{\string####1\space}\@sanitize
\@wrindexbold\@fnindexfile}
\typeout{Writing function index file \jobname.fn }\fi}
\def\fnindex{\@bsphack\begingroup \@sanitize\@index}
\def\fnindexbold{\@bsphack\begingroup \@sanitize\@index}
% \synindex{foo}{bar} makes index foo feed into index bar.
\def\synindex#1#2{\expandafter\xdef \csname @#1index\endcsname{%
\noexpand\csname @#2index\endcsname}%
\expandafter \chardef \csname @#1indexfile\endcsname=\csname @#2indexfile\endcsname}
% \syncodeindex{foo}{bar} similar, but put all entries made for index foo
% inside bold.
\def\syncodeindex#1#2{%
\expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
\expandafter\let\csname#1indfile\endcsname=\synindexfoo
\expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
\csname#1boldindex\endcsname{#2}}%
}
% Define the macros used in formatting output of the sorted index material.
% This is what you call to cause a particular index to get printed.
% Write
% \section*{Function Index}
% \printindex{fn}
\newskip\secondaryindent
\secondaryindent=0.5cm
% In case index foo is undefined, or sorted index foo.??s is empty...
\ifx\putwordIndexNonexistent\undefined \gdef\putwordIndexNonexistent{(Index is nonexistent)}\fi
\ifx\putwordIndexIsEmpty\undefined \gdef\putwordIndexIsEmpty{(Index is empty)}\fi
\def\printindex#1{
\def\indexbackslash{\rawbackslashxx}
\tolerance=9500 \advance\baselineskip -1pt
\openin 1 \jobname.#1s
\ifeof 1
\putwordIndexNonexistent
\else
\read 1 to \temp
\ifeof 1
\putwordIndexIsEmpty
\else
\begin{multicols}{2}
\input \jobname.#1s
\end{multicols}
\fi
\fi
\closein 1
}
% These macros are used by the sorted index file itself.
% Change them to control the appearance of the index.
\def\Dotsbox{\hbox to 1em{\hss.\hss}} % Used by index macros
\def\pline{\hbox to\hsize}
\def\initial#1{%
{\bigbreak\pline{\large\bf#1\hfill}\kern 2pt\penalty3000}}
\def\entry #1#2{
{\parfillskip=0in \parskip=0in \parindent=0in \small
\hangindent=1in \hangafter=1%
\noindent\hbox{#1}\leaders\Dotsbox\hskip 0pt plus 1filll\relax #2\par
}}
\def\primary #1{\pline{\small#1\hfil}}
\def\secondary #1#2{
{\parfillskip=0in \parskip=0in \small
\hangindent =1in \hangafter=1
\noindent\hskip\secondaryindent\hbox{#1}\leaders\Dotsbox\hskip 0pt plus 1filll#2\par
}}
%%% Args are the skip and penalty (usually negative)
\def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
% Now we set up the default concept index...
\newindex{cp}
% ...and two useful macros to save typing time
\newcommand{\indexcp}[1]{#1\cpindex{#1}}
\newcommand{\subindexcp}[2]{#1\cpsubindex{#2}{#1}}
% et voil\`a!
\endinput
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