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authorKarl Berry <karl@freefriends.org>2006-08-14 00:00:58 +0000
committerKarl Berry <karl@freefriends.org>2006-08-14 00:00:58 +0000
commitf68c66c2fd38fcd1146a01bbe28f58ed0efc6f79 (patch)
tree6c52bf9ca94926efe01ce319c811ec0379eef72f /Master/texmf-dist/tex/latex/oberdiek/refcount.sty
parent42bc6d37351f5002d650f9a782eeb7972c7a1703 (diff)
oberdiek update to get kvoptions 2.2 (2aug06)
git-svn-id: svn://tug.org/texlive/trunk@1948 c570f23f-e606-0410-a88d-b1316a301751
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-% File: refcount.sty
-% Version: 2000/09/07 v2.0
-% Author: Heiko Oberdiek <oberdiek@ruf.uni-freiburg.de>
-%
-% Function: Converting references to numbers.
-%
-% Copyright: Copyright (C) 1998, 2000 Heiko Oberdiek.
-%
-% This program may be distributed and/or modified 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.
-%
-% Use:
-% * Commands similar to LaTeX's \setcounter and \addtocounter,
-% but that extracts the number value from a reference:
-% \setcounterref, \addtocounterref
-% \setcounterpageref, \addtocounterpageref
-% They take two arguments:
-% \...counter...ref{<LaTeX counter>}{<reference>}
-% An undefined references produces the usual LaTeX warning
-% and its value is assumed to be zero.
-% Example:
-% \newcounter{ctrA}
-% \newcounter{ctrB}
-% \refstepcounter{ctrA}\label{ref:A}
-% \setcounterref{ctrB}{ref:A}
-% \addtocounterpageref{ctrB}{ref:A}
-% * Commands that can be used in expandible contexts:
-% \getrefnumber, \getpagerefnumber
-% They take one argument, the reference:
-% \get...refnumber{<reference>}
-% Because warnings and assignments cannot be used in
-% expandible contexts, undefined references do not
-% produce a warning, their values are assumed to be zero.
-% Example:
-% \label{ref:here}% somewhere
-% \ifodd\getpagerefnumber{ref:here}%
-% reference is on an odd page
-% \else
-% reference is on an even page
-% \fi
-% * The default for undefined references can be changed
-% with macro \setrefcountdefault, for example this
-% package calls:
-% \setrefcountdefault{0}
-% * This method of extracting the number is more safe
-% than the use of the reference directly, because
-% there are packages such as hyperref, that add
-% additional stuff, so that the reference cannot
-% be used as number any more.
-% * If the reference does not contain a number,
-% assignments to a counter will fail of course.
-% * Tested with packages hyperref and calc.
-%
-% History:
-% 1998/04/08 v1.0:
-% * First public release, written as answer in the
-% newsgroup `comp.text.tex' in the thread
-% `Re: Adding a \ref to a counter?', date: 1998/08/04.
-% 2000/09/07 v2.0:
-% * Documentation added.
-% * LPPL 1.2
-% * Package rewritten, new commands added.
-%
-\NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{refcount}
- [2000/09/07 v2.0 Converting references to numbers (HO)]
-
-\def\setrefcountdefault#1{%
- \def\rc@default{#1}%
-}
-\setrefcountdefault{0}
-
-% \def\@car#1#2\@nil{#1} % defined in LaTeX kernel
-\def\rc@cartwo#1#2#3\@nil{#2}
-
-% Generic command for "\{set,addto}counter{page,}ref":
-% #1: \setcounter, \addtocounter
-% #2: \@car (for \ref), \@cartwo (for \pageref)
-% #3: LaTeX counter
-% #4: reference
-\def\rc@set#1#2#3#4{%
- \expandafter\ifx\csname r@#4\endcsname\relax
- \protect\G@refundefinedtrue % LaTeX: rerun warning
- \@latex@warning{Reference `#4' on page \thepage\space
- undefined}%
- #1{#3}{\rc@default}%
- \else
- #1{#3}{%
- \expandafter\expandafter\expandafter#2%
- \csname r@#4\endcsname\rc@default\rc@default\@nil
- }%
- \fi
-}
-
-% user commands:
-
-\newcommand*{\setcounterref}{\rc@set\setcounter\@car}
-\newcommand*{\addtocounterref}{\rc@set\addtocounter\@car}
-\newcommand*{\setcounterpageref}{\rc@set\setcounter\rc@cartwo}
-\newcommand*{\addtocounterpageref}{\rc@set\addtocounter\rc@cartwo}
-
-\newcommand*{\getrefnumber}[1]{%
- \expandafter\ifx\csname r@#1\endcsname\relax
- \rc@default
- \else
- \expandafter\expandafter\expandafter\@car
- \csname r@#1\endcsname\@nil
- \fi
-}
-\newcommand*{\getpagerefnumber}[1]{%
- \expandafter\ifx\csname r@#1\endcsname\relax
- \rc@default
- \else
- \expandafter\expandafter\expandafter\rc@cartwo
- \csname r@#1\endcsname\rc@default\rc@default\@nil
- \fi
-}
-\endinput