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\RequirePackage{filecontents}
\begin{filecontents*}{README.txt}
------------------------
THE IFXETEX PACKAGE v0.4
This very simple package, for both Plain TeX and LaTeX,
defines the \ifxetex boolean for testing whether XeTeX
is being used for typesetting.
Also provides the \RequireXeTeX command which throws
an error if XeTeX is not the engine in use.
To extract the package from the source file "ifxetex.tex",
execute `latex ifxetex.ins`. Executing `xelatex ifxetex.tex`
compiles the documentation and generates this README.
-------------------
Will Robertson
Copyright 2006-2008
\end{filecontents*}
%%%%%%%%%1%%%%%%%%%2%%%%%%%%%3%%%%%%%%%4%%%%%%%%%5
\begin{filecontents}{ifxetex.sty}
% \iffalse
% Copyright 2006-2008 by Will Robertson <wspr81@gmail.com>
%
% 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.
% \fi
% 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}
[2008/09/18 v0.4 Provides ifxetex conditional]
\fi
% Create, if necessary, the \cmd\ifxetex\ conditional
\expandafter\ifx\csname ifxetex\endcsname\relax
\newif\ifxetex
\fi
% Set \cmd\ifxetex\ accordingly
\expandafter\ifx\csname XeTeXrevision\endcsname\relax
\xetexfalse
\else
\xetextrue
\fi
% For \XeTeX-exclusive packages
\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}
\end{filecontents}
%%%%%%%%%1%%%%%%%%%2%%%%%%%%%3%%%%%%%%%4%%%%%%%%%5
% Conditionally compile the documentation & generate the .ins file:
\providecommand\asyfigCompile{Y}
\makeatletter
\if\asyfigCompile N
\expandafter\@@end
\fi
\begin{filecontents*}{ifxetex.ins}
%&latex
\def\asyfigCompile{N}
\input ifxetex.tex
\csname@@end\endcsname
\end{filecontents*}
\makeatletter
\documentclass{article}
\usepackage[it,medium]{titlesec}
\usepackage{bigfoot,ifthen,xcolor}
\usepackage[colorlinks,linktocpage]{hyperref}
\usepackage{gmdoc}
\usepackage{gmverb}
\dekclubs
\stanzaskip=\bigskipamount
\CodeSpacesGrey
\usepackage{tocloft,varwidth}
\setcounter{tocdepth}{1}
\def\tocwidthA{0.45}
\def\tocwidthB{0.45}
\def\cftpartfont{\scshape}
\def\cftsecfont{\small}
\cftbeforesecskip=0pt
\def\cftpartleader{}
\def\cftpartafterpnum{\cftparfillskip}
\def\cftsecleader{}
\def\cftsecafterpnum{\cftparfillskip}
\let\pkg\textsf
\def\pkgopt#1{\texttt{[#1]}}
\def\PDF{\textsc{pdf}}
\def\PS{\textsc{ps}}
\def\DVI{\textsc{dvi}}
\def\EPS{\textsc{eps}}
\usepackage{amsmath,listings}
\lstset{basicstyle=\ttfamily,columns=fullflexible}
\usepackage{array,xltxtra}
\setmainfont{Georgia}
\setsansfont[Scale=MatchLowercase]{Helvetica}
\setmonofont[Scale=MatchLowercase]{Monaco}
\frenchspacing
\GetFileInfo{ifxetex.sty}
\begin{document}
\title{The \pkg{ifxetex} package}
\author{%
\normalsize Will Robertson\footnote{\texttt{wspr81@gmail.com}}}
\date{\fileversion\qquad\filedate}
\maketitle
\section{User documentation}
This package provides a way to check if a document is being processed with \XeTeX. It may be loaded with
\bigskip
\begin{tabular}{l@{\quad}l}
{|\usepackage{ifxetex}|} & for \LaTeX, or \\
{|\input ifxetex.sty|} & for Plain \TeX.
\end{tabular}
\bigskip
\noindent
This defines the conditional \cmd\ifxetex\ that is used in the standard way:
\bigskip
|\ifxetex|\par
\hspace{2em}\meta{material for \XeTeX}\par
|\else|\par
\hspace{2em}\meta{material not for \XeTeX}\par
|\fi|
\bigskip
\noindent
Users of \LaTeX's \pkg{ifthen} package can also use it as |\boolean{xetex}|:
\bigskip
|\ifthenelse{ \boolean{xetex} }{|\texttt{\char`\%}\par
\hspace{2em}\meta{material for \XeTeX}\par
|}{|\texttt{\char`\%}\par
\hspace{2em}\meta{material not for \XeTeX}\par
|}|
\bigskip
\noindent
Finally, the |\RequireXeTeX| command tests for \XeTeX\ use and
throws an error if a different engine is being used. This is used
for packages like \pkg{fontspec} that take advantage of \XeTeX's new
features and cannot be used otherwise.
\clearpage
\parindent=0pt
\section{Implementation}
\DocInput{ifxetex.sty}
\end{document}
|
