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|
%%
%% repeatindex.sty
%%
%% Copyright 2001 Harald Harders (h.harders@tu-bs.de)
%% License is LPPL.
%%
%%
%% This Package repeats item of an index if a page or column
%% break occurs within a list of subitems.
%% This helps to find out to which main item a subitem belongs.
%%
%% Example:
%%
%% Main Item A, 1, 3, 6 Main Item A...
%% Subitem a, 1 Subitem g, 1
%% Subitem b, 1 Subitem h, 1
%% Subitem c, 2 Subitem i, 1
%% Subitem d, 3 Subitem j, 1
%% Subitem d, 1 Main Item B, 3, 6
%% Subitem e, 4 Subitem a, 3
%% Subitem f, 2 Subitem b, 4
%%
%% To get that behaviour you have to include the package into your
%% document using \usepackage{repeatindex}, and you have to produce
%% the .ind file in a special format in which the entries of the \item
%% are enclosed in [...] (example: \item [Main Item A], 1, 3, 6 ).
%% This can be achieved using repeatindex.ist:
%% makeindex -s repeatindex file
%%
%% Problems:
%% - When an item is repeated a small vertical space is included two
%% items later
%% - If the last item is a subitem and the only entry on the last page
%% of the index the repeation is omitted
%%
%% This package has not been tested much, yet. Please help me to find
%% more problems and if possible solutions to my problems.
%% I have had much trouble in solving the problem that the code
%% defined in afterpage is executed with a delay.
%%
%% Harald Harders, 2001/10/13
%% h.harders@tu-bs.de
%%
\ProvidesPackage{repeatindex}[2001/10/13 v0.01 Repeats index entries]
% Write text at page and column breaks
\RequirePackage{afterpage}
% Include Index stuff
\RequirePackage{makeidx}
% Command that replaces all contents of afterpage
\long\def\hhafterpage#1{%
\gdef\AP@{{#1\par}}%
\global\output{%
\the\AP@output
\ifnum\outputpenalty>-\@Mi
\global\output\expandafter{\the\AP@output}%
\aftergroup\AP@@
\fi}%
}
% Entry to be repeated
% temporary variable
\def\@entry{}%
% final variable
\def\@@entry{}%
\def\@hhempty{\@empty}
\def\entryprefix{\itshape}
\def\entrypostfix{\dots}
\AtBeginDocument{%
% Save original item commands
\let\orig@idxitem\@idxitem
\let\orig@subitem\subitem
\let\orig@subsubitem\subsubitem
%
% New \item command, has to be used "\item [entry], pages"
\renewcommand{\@idxitem}[1][\@empty]{%
% call original command
\orig@idxitem #1%
% save entry in \@arg
\def\@arg{#1}%
\ifx\@arg\@hhempty
\else
% if entry not empty (which is the case if called by \subitem or
% \subsubitem) copy entry to \@entry
\xdef\@entry{#1}%
% Delete the contents to be repeated
\hhafterpage{}%
\fi
}%
%
% New \subitem command, to be used as usual
\renewcommand{\subitem}{%
% call original command
\orig@subitem
% set the contents to be repeated on the next page
\expandafter\hhafterpage\expandafter{\expandafter\par\expandafter{%
\expandafter\expandafter\entryprefix\@@entry\entrypostfix}}%
% copy \@entry to \@@entry. This is done to delay the entry to be
% put onto the page, due to a strange behaviour of afterpage (some
% text of the next page is executed before the afterpage text is
% put onto the page).
\xdef\@@entry{\@entry}%
}%
%
% New \subsubitem command, to be used as usual
\renewcommand{\subsubitem}{%
% call original command
\orig@subsubitem
% set the contents to be repeated on the next page
\expandafter\hhafterpage\expandafter{\expandafter\par\expandafter{%
\expandafter\expandafter\itshape\@@entry\dots}}%
% copy \@entry to \@@entry. This is done to delay the entry to be
% put onto the page, due to a strange behaviour of afterpage (some
% text of the next page is executed before the afterpage text is
% put onto the page).
\xdef\@@entry{\@entry}%
}%
%
% Copy original end of the theindex environment
\let\orig@endtheindex\endtheindex
% Redefine end of the theindex environment
\renewcommand{\endtheindex}{%
% switch off repeation
\hhafterpage{}%
% call original command
\orig@endtheindex
}%
%
}
\endinput
|
