blob: 1766fd27306bedd52a915ce84869418b282267de (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
% Copyright 2006 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.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% 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
% 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}
|
