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% censor.sty
\def\censorversionnumber{3.21}
\ProvidesPackage{censor}
[2013/06/24 \censorversionnumber
Provides capability for redaction of sensitive information]
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% 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 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%
% This work has the LPPL maintenance status `maintained'.
%
% The Current Maintainer of this work is Steven B. Segletes.
% VERSION:
% 1.00 - Initial release
% 2.00 - Added \blackout
% 2.10 - Allowed \blackout to cross paragraph boundaries with use of
% \bpar. Stopped censoring periods, in order to preserve
% end-of-sentence spacing, which differs from inter-word spacing.
% 3.00 - \censorbox introduced to handle figures, tables, etc.
% 3.10 - Made \blackout work with \par in argument. Introduced
% \xblackout
% 3.20 - Specify depth/height of censor rule. Introduced \def\censordot{}
% 3.21 - Fixed bug regarding \xblackout rules remaining after a
% \StopCensoring
\usepackage{pbox}
\usepackage{ifnextok}
\newlength\censorruledepth
\newlength\censorruleheight
\censorruledepth=-0.3ex% -0.3ex DEFAULT
\censorruleheight=2.1ex% 2.1ex DEFAULT
\def\censordot{.}% versus \def\censordot{ }%
\newcommand\censorrule[1]{\protect\rule[\censorruledepth]{#1}{\censorruleheight}}
\newcommand\censor{\@ifstar{\@cenlen}{\@cenword}}
\newcommand\@cenlen[1]{\censorrule{#1 ex}}
\newcommand\@cenword[1]{\censorrule{\widthofpbox{#1}}}
\newcommand\un@censor{\@ifstar{\un@cenlen}{\un@cenword}}
\newcommand\un@cenlen[1]{\protect\underline{\hspace{#1 ex}}}
\newcommand\un@cenword[1]{#1}
\newcommand\StopCensoring{%
\let\censor\un@censor%
\let\censorbox\un@censorbox%
\let\xblackout\blackout%
}
\newcommand\RestartCensoring{%
\renewcommand\censor{\@ifstar{\@cenlen}{\@cenword}}%
\renewcommand\censorbox{\@ifstar{\censor@dim}{\censor@box}}%
\let\xblackout\sv@xblackout%
}
\let\sv@tilde~
\def\stringend{$}
\long\def\blackout#1{\def~{-}\censor@Block#1\stringend\let~\sv@tilde}
\long\def\censor@Block{\IfNextToken\stringend{\@gobble}%
{\IfNextToken\@sptoken{ \bl@t{\censor@Block}}%
{\bl@t{\censor@Block}}}}
% V2.00 DEFINITION:
% \def\bl@t#1#2{\censor{#2}#1}
% V2.10 DEFINITION (MADE \long IN V3.1):
\long\def\bl@t#1#2{\if\bpar#2\par\else\if.#2\censordot\else\censor{#2}\fi\fi#1}
%\def\bpar{_} %V3.00 DEFINITION
\let\bpar\par %AS OF V3.1, CAN HANDLE \par
\long\def\xblackout#1{\rule{0ex}{0ex}%
\def~{-}%
\def\@justpar{F}%
\def\@justperiod{F}%
\def\@justspace{F}%
\xcensor@Block#1\stringend%
\let~\sv@tilde%
}
\let\sv@xblackout\xblackout
\long\def\xcensor@Block{\IfNextToken\stringend{\@gobble}%
{\IfNextToken\@sptoken{ \def\@justspace{T}\xbl@t{\xcensor@Block}}%
{\xbl@t{\xcensor@Block}}}}
\newlength\periodrlap\setlength\periodrlap{1.6ex}
\newlength\afterperiodlap\setlength\afterperiodlap{1.2ex}
\newlength\lletterlap\setlength\lletterlap{0.55ex}
\newlength\rletterlap\setlength\rletterlap{0.55ex}
\newlength\afterspacelap\setlength\afterspacelap{0.0ex}
\def\@periodrlap{\rlap{\censorrule{\periodrlap}}}
\def\@afterperiodlap{\llap{\censorrule{\afterperiodlap}}}
\def\@lletterlap{\llap{\censorrule{\lletterlap}}}
\def\@rletterlap{\rlap{\censorrule{\rletterlap}}}
\def\@afterspacelap{\llap{\censorrule{\afterspacelap}}}
\long\def\xbl@t#1#2{%
\if\par#2%
\par\def\@justpar{T}%
\else%
\if T\@justspace%
\rule{0ex}{1ex}\@afterspacelap%
\fi%
\if.#2%
\def\@justperiod{T}%
\@periodrlap%
\censordot%
\else%
\if F\@justpar%
\if T\@justperiod%
\@afterperiodlap%
\else%
\@lletterlap%
\fi%
\fi%
\censor{#2}%
\@rletterlap%
\def\@justpar{F}%
\def\@justperiod{F}%
\def\@justspace{F}%
\fi%
\fi%
#1%
}
\newcommand\censorbox{\@ifstar{\censor@dim}{\censor@box}}
\newcommand\censor@dim[4][]{{#1%
\rule[-#4\baselineskip]{#2ex}{#3\baselineskip}}}
\newcommand\censor@box[2][]{#1\setbox0\hbox{#2}%
\rule[-\the\dp0]{\the\wd0}{\the\ht0+\the\dp0}}
\newcommand\un@censorbox{\@ifstar{\un@censor@dim}{\un@censor@box}}
\newcommand\un@censor@dim[4][]{{#1%
\fbox{\rule[-#4\baselineskip]{0ex}{#3\baselineskip}
\rule{#2ex}{0ex}}}}
\newcommand\un@censor@box[2][]{#1#2}
% NOTE: A \protect\censorbox{} MAY BE REQUIRED INSIDE SOME ENVIRONMENTS
\endinput
|
