anonymize.sty

\NeedsTeXFormat{LaTeX2e}[1994/06/01]
\ProvidesPackage{anonymize}[2013/01/13 Custom Package]

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%   This package will blacken out the text included inside the anonymize function if the blind option is set
%    Author Angelo Fraietta
%    Univeristy of New South Wales
%    10 June 2018
%
%    Usage 
%    \usepackage[blind]{anonymize} will blacken text inside function \anonymize{text}
%    \usepackage{anonymize} will not modify text inside function \anonymize{text}
%
%
%    The basis for this code was found at 
%    https://tex.stackexchange.com/questions/41995/efficient-ways-to-anonymize-a-document/42090 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\usepackage{soul}
\usepackage{tikz}
\usepackage{calc}
\usetikzlibrary{calc}


\makeatletter
%% Global indentation option
\newif\if@anonymize\@anonymizefalse

\DeclareOption{blind}{
	\@anonymizetrue    % Uncomment to hide text
}


\ProcessOptions\relax


\newdimen\highlight@previous
\newdimen\highlight@current
\newlength{\item@width}

\if@anonymize

\newcommand{\anonybib}[1]{\cite{#1-hidden}}
\newcommand{\anoncite}[1]{#1-hidden}

\newcommand{\highlight@DoHighlight}{
	\fill [outer sep = -15pt, inner sep = 0pt, color=black]
	($(begin highlight)+(0,8pt)$) rectangle ($(end highlight)+(0,-3pt)$) ;
}

\newcommand{\highlight@BeginHighlight}{
	\coordinate (begin highlight) at (0,0) ;
}

\newcommand{\highlight@EndHighlight}{
	\coordinate (end highlight) at (0,0) ;
}
\DeclareRobustCommand*\anonymize{%
	\SOUL@setup
	\def\SOUL@preamble{%
		\begin{tikzpicture}[overlay, remember picture]
		\highlight@BeginHighlight
		\highlight@EndHighlight
		\end{tikzpicture}%
	}%
	%
	\def\SOUL@postamble{%
		\begin{tikzpicture}[overlay, remember picture]
		\highlight@EndHighlight
		\highlight@DoHighlight
		\end{tikzpicture}%
	}%
	%
	\def\SOUL@everysyllable{%
		\begin{tikzpicture}[overlay, remember picture]
		\path let \p0 = (begin highlight), \p1 = (0,0) in \pgfextra
		\global\highlight@previous=\y0
		\global\highlight@current =\y1
		\endpgfextra (0,0) ;
		\ifdim\highlight@current < \highlight@previous
		\highlight@DoHighlight
		\highlight@BeginHighlight
		\fi
		\end{tikzpicture}%
		\settowidth{\item@width}{\the\SOUL@syllable}%
		\makebox[\item@width]{}%
		\tikz[overlay, remember picture] \highlight@EndHighlight ;%
	}%
	\SOUL@
}
\else
\newcommand{\anonymize}[1]{#1}
\newcommand{\anonybib}[1]{\cite{#1}}
\newcommand{\anoncite}[1]{#1}
\fi
\makeatother


\endinput