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% Package robustindex.sty, Wilberd van der Kallen Feb 2005.
%
% This package addresses two issues.
%
% 1. The main issue.
% Third parties often change the page numbers without rerunning makeindex.
% One would like to make the page numbers in the index entries more robust.
% We use the \pageref mechanism for that. Only after adding, deleting or
% otherwise modifying an \index{entry}, or after changing the order of the
% index entries, does one have to rerun makeindex.
% Other changes do not matter, as long as one runs LaTeX or pdflatex twice.
% As usual a makeindex run has to be preceded and also followed by its
% LaTeX or pdflatex run.
%
% 2. A patch.
% The theindex environment does not create a hyperref destination.
% Therefore we introduce \indexincontents.
% It does what \addcontentsline{toc}{chapter}{Index} or
% \addcontentsline{toc}{section}{Index} should have done in the first place:
% When one clicks on the link that displays the word Index, one actually ends
% up in the index.
% Our patch is much more simpleminded than the tocbibind package.
%
% If you use hyperref, choose the option hyperindex=false. Otherwise hyperref
% may block our code. And our package already gives hyperlinks in the
% index.
% Alternatively, you may go against the advice of hyperref and put our
% package later.
%
% We tested a little with
%
% \usepackage[plainpages=false,hyperindex=false]{hyperref}
%
% The implicit page range formation of makeindex is disabled.
% Commands of the type \index{entry|editing command} are supported,
% but much more naively than in the encapsulating mechanism of makeindex.
% For instance, \index{term|(textbf} may be followed by \index{term|)textit},
% but not by \index{term|textbf}, even if there is a later
% \index{term|)textbf}.
%
% See robustsample.tex at
% http://www.math.uu.nl/people/vdkallen/stind.html
% for further details.
%
% There you find examples like
%
% \index{alpha!see beta}
% \index{alpha!see also gamma\gobblepageref}
%
% \indexincontents % always put this before the index.
%
% Our package performs no miracles. But in simple situations all you need is
% adding the \usepackage{robustindex} to the preamble. Do not exclude any
% relevant files, as in \includeonly.
%
% Copyright 2005 Wilberd van der Kallen
%
% This file may be distributed under the conditions of the LaTeX Project Public
% License, either version 1.2 of this license or (at your option) any
% later version. The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.2 or later is part of all distributions of LaTeX
% version 1999/12/01 or later.
\ProvidesPackage{robustindex}
[2005/02/24
index entries with pagerefs]
\newcounter{indexctr}%
\newcounter{maxindctr}% Used to check if number of \index commands has changed.
\newcommand{\indstring}{ind.}%
\def\@wrindex#1{%
\stepcounter{indexctr}%
\stepcounter{indexctr}% second time, to emulate makeindex -r.
\@bsphack \protected@write \@auxout {}{%
\string \newlabel {\indstring\theindexctr}{{\relax }{\thepage }%
\ifx\ifHy@bookmarks\undefined\else{\relax }{page.\thepage }{}\fi%
}%
}%
\@esphack
\protected@write
\@indexfile {}{\string \indexentry
{\findencap#1|\relax }{\theindexctr}}% \findencap will check for the
\endgroup % encap symbol | in the argument.
\@esphack
}%
\newcommand{\indpageref}[1]{%
\ifnum\c@maxindctr<#1\relax\setcounter{maxindctr}{#1}\fi
\pageref{\indstring#1}%
}%
\newcommand{\indexpreamble}{\relax}% compare the preamble of makeindex
\newcommand{\indexincontents}{%
\def\indexpreamble{%
\addcontentsline{toc}%
{\ifx\c@chapter\undefined section\else chapter\fi}{\indexname}%
}%
}%
\newcommand{\old@theindex}{}%
\let\old@theindex\theindex
\newcommand{\cndhyprndxwrng}{%
\ifHy@hyperindex
\PackageWarning{robustind}{%
Use option hyperindex=false in hyperref. Hyperlinks in the index
will be made through \string\pageref. Detected%
}%
\fi
}%
\def\theindex{%
\old@theindex
\refstepcounter{subsection}\indexpreamble
% We use that \refstepcounter{subsection} creates a destination.
% An index is not to be followed immediately by a subsection.
% We do not use \phantomsection, as we do not assume hyperref is used.
\ifx\ifHy@hyperindex\undefined\else\cndhyprndxwrng\fi
}%
\ifx\ifHy@hyperindex\undefined\else\Hy@hyperindexfalse\fi
% If you put our package after the hyperref package,
% then you probably do not mind our disabling its hyperindex mechanism.
\AtEndDocument{%
\ifnum\c@indexctr=\c@maxindctr
\else
\ifnum\c@indexctr=0%
\PackageWarning{robustind}{%
Package needs \string\make index in preamble,
and if you use hyperref, you must
use option hyperindex=false. Detected%
}%
\else
\PackageWarning{robustind}{%
Index not up to date, run makeindex. Detected%
}%
\fi
\fi
}%
\newcommand{\wrappageref}{\protect\wrapindpageref}%
\newcommand{\wrapindpageref}{}%
\def\wrapindpageref#1, \indpageref#2{%
\ifnum\c@maxindctr<#2\relax
\setcounter{maxindctr}{#2}%
\fi
#1{\pageref{\indstring#2}}%
}%
\newcommand{\gobbleindpageref}{\wrappageref\@gobble}
\newcommand{\gobblepageref}{% to supress one page number.
\protect\gobbleindpageref
}%
% Now it gets technical, because we wish to implement a poor man's encap
% mechanism, distinguishing \index{entry}, \index{entry|(}, \index{entry|)},
% \index{entry|(towrap}, \index{entry|)towrap}, where towrap is a sequence
% of letters and \towrap is to be wrapped around \indpageref{countervalue}.
\newcommand{\findencap}{}%
\def\findencap#1|#2\relax{%
\ifx\relax#2\relax
#1|indpageref% The easy case
\else
#1|\wr@pencap#2% There is a | in the argument.
\fi
}%
\newcommand{\wr@pencap}{}%
\def\wr@pencap#1|{encpageref{#1}}%
\newcommand{\encpageref}[2]{%
\findleftbrack#1(\relax{#2}%
}%
\newcommand{\findleftbrack}{}%
\def\findleftbrack#1(#2\relax#3{%
\ifx|#1| \dropleftbrack#2{#3}%
\else \findrightbrack#1)\relax{#3}%
\fi
}%
\newcommand{\dropleftbrack}{}%
\def\dropleftbrack#1(#2{%
\unskip
\ifx|#1|\indpageref{#2}%
\else
\csname #1\endcsname{\indpageref{#2}}%
\fi
\gobblecomma
}%
\newcommand{\gobblecomma}{}%
\newcommand{\oldndpgrf}{}%
\let\oldndpgrf\indpageref
\def\gobblecomma#1,{%
\def\indpageref{\rangewarning}%
\ignorespaces #1%
}%
\newcommand{\rangewarning}{%
\PackageWarning{robustind}{%
You must first close the page range. Detected%
}%
}%
\newcommand{\findrightbrack}{}%
\def\findrightbrack#1)#2\relax#3{%
\ifx|#1| \droprightbrack#2{#3}
\else
\csname#1\endcsname{\indpageref{#3}}%
\fi
}%
\newcommand{\droprightbrack}{}%
\def\droprightbrack#1)#2{%
\let\indpageref\oldndpgrf
\ifx|#1|\unskip \mbox{--}\nobreak\indpageref{#2}%
\else
\unskip \mbox{--}\nobreak\csname #1\endcsname{\indpageref{#2}}%
\fi
\ignorespaces
}%
\relax
|
