% Copyright 2006 by Will Robertson % % Distributable under the LaTeX Project Public License, % version 1.3c or higher (your choice). The latest version of % this license is at: http://www.latex-project.org/lppl.txt % % This work is "maintained" (as per LPPL maintenance status) % by Will Robertson. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %% The ifxetex package, version 0.3 %% %% Usage: LaTeX - \usepackage{ifxetex} %% Plain - \input ifxetex.sty %% %% Function: Provides the \ifxetex boolean for testing %% whether XeTeX is being used for typesetting. %% %% Provides the \RequireXeTeX command which throws %% an error if XeTeX is not the engine in use. %% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % Ensure loading a single time only \csname ifxetexloaded\endcsname \let\ifxetexloaded\endinput % Declare ourselves to LaTeX \expandafter\ifx\csname ProvidesPackage\endcsname\relax\else \ProvidesPackage{ifxetex} [2006/08/21 v0.3 Provides ifxetex conditional] \fi % Create, if necessary, the \ifxetex conditional \expandafter\ifx\csname ifxetex\endcsname\relax \newif\ifxetex \fi % Set \ifxetex accordingly \expandafter\ifx\csname XeTeXrevision\endcsname\relax \xetexfalse \else \xetextrue \fi % \def\RequireXeTeX{% \ifxetex\else \begingroup \errorcontextlines=-1\relax \newlinechar=10\relax \errmessage{^^J ********************************************^^J * XeTeX is required to compile this document.^^J * Sorry!^^J ********************************************}% \endgroup \fi}