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%%
%% This is file 'zxbase.sty'.
%%
%% Copyright (c) 2017 Takayuki YATO (aka. "ZR")
%% GitHub: https://github.com/zr-tex8r
%% Twitter: @zr_tex8r
%%
%% This package is distributed under the MIT License.
%%
%% package declaration
\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{zxbase}[2017/05/29 v1.1]
\RequirePackage{ifxetex}
\RequireXeTeX
%% preparations
\RequirePackage{bxbase}
\def\zx@pkgname{zxbase}
%--------------------------------------- generic family detection
%%<+> \zxSpecFamily / \zxRMFamily / \zxSFFamily / \zxTTFamily
% The constants signifying each generic family.
% These values can be considered as fixed, so you can say i.e.
% "\ifnum\zxGFFlag<\zxSFFamily <non-sans> \else <sans> \fi"
\chardef\zxSpecFamily=0
\chardef\zxRMFamily=1
\chardef\zxSFFamily=2
\chardef\zxTTFamily=3
%% \zx@set@genfamflag
% A patch to be inserted to \selectfont. This makes \selectfont
% set a right \zx..Family constant to \zxGFFlag.
\def\zx@set@genfamflag{%
\zx@set@gff@get\zx@curfam\f@family
\let\zxGFFlag\zxSpecFamily
\zx@set@gff@match\ttdefault\zxTTFamily
\zx@set@gff@match\sfdefault\zxSFFamily
\zx@set@gff@match\rmdefault\zxRMFamily}
\def\zx@set@gff@get#1#2{%
\expandafter\let\expandafter#1\csname
zf@family@fontname#2\endcsname
\ifx#1\relax \edef#1{#2}\fi}
\def\zx@set@gff@match#1#2{%
\zx@set@gff@get\zx@genfam#1%
\ifx\zx@genfam\zx@curfam \let\zxGFFlag#2\fi}
%%<+> \zxBDHookGenFamFlag
\def\zxBDHookGenFamFlag{\zx@bdhook@genfamflag@do}
\@onlypreamble\zx@bdhook@genfamflag@do
\def\zx@bdhook@genfamflag@do{%
\expandafter\zx@bdhook@genfamflag@a\csname selectfont \endcsname
\let\zx@bdhook@genfamflag@do\relax}
\@onlypreamble\zx@bdhook@genfamflag@a
\def\zx@bdhook@genfamflag@a#1{%
\expandafter\def\expandafter#1\expandafter{%
\expandafter\zx@set@genfamflag#1}}
%--------------------------------------- forge pTeX primitives
% It is not totally safe, but is required so as to make
% the 'ajmacros' package work.
%%<+> \zxBDHookForgepTeXDir
\def\zxBDHookForgepTeXDir{\zx@bdhook@forgeptexdir@do}
\@onlypreamble\zx@bdhook@forgeptexdir@do
\def\zx@bdhook@forgeptexdir@do{%
\zx@letconstif{ydir}{true}\zx@letconstif{tdir}{false}%
\ifx\yoko\@undefined \let\yoko\relax \fi
\ifx\tate\@undefined \let\tate\relax \fi
}
\def\zx@letconstif#1#2{%
\ifcsname if#1\endcsname\else
\expandafter\let\csname if#1\expandafter\endcsname
\csname if#2\endcsname \fi}
%--------------------------------------- load pLaTeX packages
%%<+> switch 'zxPPInUTFEight'
\newif\ifzxPPInUTFEight
%% variables
\newif\ifzx@jisenc
%% errors
\def\zx@err@ukenc#1{\PackageError\zx@pkgname
{File '#1' is in unknown encoding}%
{The file must be encoded in ISO-2022-JP or UTF-8.}}
%%<+> \zxRequirepLaTeXPackage{<package>}
\@onlypreamble\zxRequirepLaTeXPackage
\def\zxRequirepLaTeXPackage#1{%
\ifzxPPInUTFEight \zx@jisencfalse
\else \zx@checkjisorutfeight{#1.\@pkgextension}%
\ifcase\zx@joru \zx@err@ukenc{#1.\@pkgextension}\or
\zx@jisenctrue \else \zx@jisencfalse \fi
\fi
\let\NeedsTeXFormat\zx@mute@NeedsTeXFormat
\ifzx@jisenc \XeTeXdefaultencoding ISO-2022-JP\relax \fi
\RequirePackage{#1}\relax
\ifzx@jisenc \XeTeXdefaultencoding auto\relax \fi
\let\NeedsTeXFormat\zx@org@NeedsTeXFormat
}
%% \zx@mute@NeedsTeXFormat
\def\zx@mute@NeedsTeXFormat#1{\@ifnextchar[{\zx@mute@ntf@a}{\relax}}
\def\zx@mute@ntf@a[#1]{\relax}
\let\zx@org@NeedsTeXFormat\NeedsTeXFormat
%% \zx@checkjisorutfeight{<file>}
% Decides whether <file> is encoded in JIS or UTF-8 and sets to \zx@joru.
% 0:binary; 1:JIS; 2:UTF-8; 3:US-ASCII
\def\zx@checkjisorutfeight#1{%
\begingroup
\XeTeXdefaultencoding bytes\relax
\let\zx@c@ctl=f\def\zx@found@ctl{\let\zx@c@ctl=t}%
\let\zx@c@esc=f\def\zx@found@esc{\let\zx@c@esc=t}%
\let\zx@c@high=f\def\zx@found@high{\let\zx@c@high=t}%
\zx@make@activelet{0}{32}\zx@found@ctl
\zx@make@ignorable{32}{127}%
\zx@make@activelet{127}{128}\zx@found@ctl
\zx@make@activelet{128}{256}\zx@found@high
\zx@make@activelet{27}{28}\zx@found@esc
\catcode13=5 \catcode32=10 \catcode9=10 \catcode`\~=9
\@@input"#1"\relax
\if t\zx@c@ctl \global\chardef\zx@g@joru0
\else\if t\zx@c@esc \global\chardef\zx@g@joru1
\else\if t\zx@c@high \global\chardef\zx@g@joru2
\else \global\chardef\zx@g@joru3 \fi\fi\fi
\XeTeXdefaultencoding auto\relax
\endgroup
\let\zx@joru\zx@g@joru}
\def\zx@make@activelet#1#2#3{%
\catcode`\~=\active \let\zx@tmpx=#3\relax
\@tempcnta#1\relax\loop
\catcode\@tempcnta\active \lccode`\~=\@tempcnta
\lowercase{\let~\zx@tmpx}%
\advance\@tempcnta\@ne \ifnum\@tempcnta<#2 \repeat}
\def\zx@make@ignorable#1#2{%
\@tempcnta#1\relax\loop \catcode\@tempcnta9
\advance\@tempcnta\@ne \ifnum\@tempcnta<#2 \repeat}
%%<*> \platexpackagesinunicode
\@onlypreamble\platexpackagesinunicode
\newcommand*\platexpackagesinunicode{\zxPPInUTFEighttrue}
%--------------------------------------- all done
\endinput
%% EOF
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