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%
% pxbabel.sty
%
%%%% package declaration
\NeedsTeXFormat{pLaTeX2e}
\ProvidesPackage{pxbabel}[2017/05/04 v0.5i PX Babel interface for CJK]
\RequirePackage{pxbase}
\safecaret
\RequirePackage{keyval}

%%%% error message
\def\pxbb@pkgname{pxbabel}
\def\pxbb@error{\PackageError\pxbb@pkgname}
\def\pxbb@warn{\PackageWarningNoLine\pxbb@pkgname}
\def\pxbb@eha{\MessageBreak I aborted loading it.}
\def\pxbb@err@nobbl{\pxbb@error
  {babel is not yet loaded, load aborted}%
  {This package must be loaded after babel package.}}
\@onlypreamble\pxbb@err@nobbl
\def\pxbb@warn@nocjk{\pxbb@warn
  {No multi-CJK support found, font switch disabled\MessageBreak
   (I need upTeX-extension or otf package with `multi')}}
\@onlypreamble\pxbb@warn@nocjk

%%%% \pxbb@foreach@lang\CS
\def\pxbb@foreach@lang#1{%
  #1{japanese}#1{korean}#1{schinese}#1{tchinese}}

%%%% keyval settings
\def\pxbb@setkey{%
  \edef\pxbb@nxt{\noexpand\setkeys{pxbabel}{\CurrentOption}}%
  \pxbb@nxt}
\def\pxbb@do#1{%
  \define@key{pxbabel}{#1}{\@namedef{pxbb@LN/#1}{##1}}%
  \@namedef{pxbb@LN/#1}{#1}}
\pxbb@foreach@lang\pxbb@do
\define@key{pxbabel}{main}{\def\pxbb@main{#1}}
\let\pxbb@main\relax

%%%% option handler
\newif\ifpxbb@switchcaption \pxbb@switchcaptionfalse
\DeclareOption{switchcaption}{\pxbb@switchcaptiontrue}
\DeclareOption{noswitchcaption}{\pxbb@switchcaptionfalse}
\newif\ifpxbb@switchfont \pxbb@switchfonttrue
\DeclareOption{switchfont}{\pxbb@switchfonttrue}
\DeclareOption{noswitchfont}{\pxbb@switchfontfalse}
\newif\ifpxbb@prefermmixjis
\DeclareOption{prefer2004jis}{\pxbb@prefermmixjistrue}
\DeclareOption{noprefer2004jis}{\pxbb@prefermmixjisfalse}
\DeclareOption*{\pxbb@setkey}
\ProcessOptions*

%%%% \ifpxbb@otfmulti, \ifpxbb@uptex
%%%% \ifpxbb@pxotf
\newif\ifpxbb@otfmulti \newif\ifpxbb@pxotf
\@ifpackageloaded{mlutf}{\pxbb@otfmultitrue}{\pxbb@otfmultifalse}
\@ifpackageloaded{pxotf}{\pxbb@otfmultitrue\pxbb@pxotftrue}{}
\newif\ifpxbb@uptex
\let\ifpxbb@uptex\ifupTeX

%%%% environment check
\@ifpackageloaded{babel}{}{\pxbb@err@nobbl\endinput}
\ifpxbb@switchfont \ifpxbb@otfmulti\else \ifpxbb@uptex\else
    \pxbb@warn@nocjk \fi\fi\fi

%%%% set caption language to 'default'
\ifpxbb@switchcaption\else
  \ifx\bx@bbl@captlang\@undefined
    \bxcaptionlanguage{default}
\fi\fi

%%------ language declarations

%%%% \pxlanguagename{<langcode>}
\def\pxlanguagename#1{\@nameuse{pxbb@LN/#1}}

%%%% declare languages
\def\pxbb@decl@triv@lang#1{%
  \edef\pxbb@arg{{\@nameuse{pxbb@LN/#1}}}%
  \expandafter\pxbb@decl@triv@lang@a\pxbb@arg}
\def\pxbb@decl@triv@lang@a#1{%
  \expandafter\ifx\csname date#1\endcsname\relax
    \bxTrivLangDef{#1}\fi}
\pxbb@foreach@lang\pxbb@decl@triv@lang
\pxbb@decl@triv@lang@a{cjkmulti}
\ifx\pxbb@main\relax\else
  \bxmainlanguage{\pxbb@main}\fi
\@onlypreamble\pxb@decl@triv@lang
\@onlypreamble\pxb@decl@triv@lang@a

\ifpxbb@otfmulti %====================== for OTF
%%------ \UTF switch

%%%% add \UTF switch to Babel \extras
\ifpxbb@switchfont
\def\pxbb@addtoextras@otf#1{%
  \edef\pxbb@arg{{\@nameuse{pxbb@LN/#1}}}%
  \expandafter\pxbb@addtoextras@otf@a\pxbb@arg}
\def\pxbb@addtoextras@otf@a#1#2{%
  \expandafter\addto\csname extras#1\endcsname{%
    \babel@save\UTF \let\UTF#2}}
\pxbb@addtoextras@otf{korean}{\UTFK}
\pxbb@addtoextras@otf{schinese}{\UTFC}
\pxbb@addtoextras@otf{tchinese}{\UTFT}
\pxbb@addtoextras@otf@a{cjkmulti}{\UTFM}
\@onlypreamble\pxbb@addtoextras@otf
\@onlypreamble\pxbb@addtoextras@otf@a
\fi % pxbb@switchfont

\fi %=================================== end

\ifupTeX %============================== for upTeX
%%------ encoding switch according to NFSS
\bxInputDefFile{pxbasenc}
\pxBDHookEncSwitchOTF

%%%% declarations for upTeX standatd CJK fonts
\ifpxbb@pxotf\else
\pxDeclareBasicCJKEncoding{J20}{J30}% UniJIS
\pxDeclareBasicCJKFamily{J20}{!upjpnrm-h}{!upjpngt-h}{*gt}{*gt}
\pxDeclareBasicCJKFamily{J30}{!upjpnrm-v}{!upjpngt-v}{*gt}{*gt}
\pxDeclareBasicCJKEncoding{J21}{J31}% UniKS
\pxDeclareBasicCJKFamily{J21}{!upkorrm-h}{!upkorgt-h}{*gt}{*gt}
\pxDeclareBasicCJKFamily{J31}{!upkorrm-v}{!upkorgt-v}{*gt}{*gt}
\pxDeclareBasicCJKEncoding{J22}{J32}% UniGB
\pxDeclareBasicCJKFamily{J22}{!upschrm-h}{!upschgt-h}{*gt}{*gt}
\pxDeclareBasicCJKFamily{J32}{!upschrm-v}{!upschgt-v}{*gt}{*gt}
\pxDeclareBasicCJKEncoding{J23}{J33}% UniCNS
\pxDeclareBasicCJKFamily{J23}{!uptchrm-h}{!uptchgt-h}{*gt}{*gt}
\pxDeclareBasicCJKFamily{J33}{!uptchrm-v}{!uptchgt-v}{*gt}{*gt}
\fi

%%%% add font switch to Babel \extras
\ifpxbb@switchfont
\def\pxbb@addtoextras#1#2#3{%
  \edef\pxbb@arg{{\@nameuse{pxbb@LN/#1}}%
   \if t#2{\noexpand\pxbb@full@ja@enc}{\noexpand\@undefined}%
   \else{#3}{t}\fi}%
  \expandafter\pxbb@addtoextras@a\pxbb@arg}
\def\pxbb@addtoextras@a#1#2#3{%
  \expandafter\addto\csname extras#1\endcsname{%
    \pxbb@set@full@ja@enc \let\pxInNonJaLanguage=#3%
    \let\pxbb@org@encoding\cy@encoding
    \kanjiencoding{#2}\selectfont}%
  \expandafter\addto\csname noextras#1\endcsname{%
    \let\pxInNonJaLanguage\@undefined
    \kanjiencoding{\pxbb@org@encoding}\selectfont}}
\pxbb@addtoextras{japanese}{t}{}
\pxbb@addtoextras{korean}{f}{J21}
\pxbb@addtoextras{schinese}{f}{J22}
\pxbb@addtoextras{tchinese}{f}{J23}
\@onlypreamble\pxbb@addtoextras
\@onlypreamble\pxbb@addtoextras@a
%% \pxbb@set@full@ja@enc
\edef\pxbb@dflt@ja@enc{\ifpxbb@prefermmixjis J24\else J20\fi}
\@namedef{pxbb@SFJE/J20}{\def\pxbb@full@ja@enc{J20}}
\@namedef{pxbb@SFJE/J24}{\def\pxbb@full@ja@enc{J24}}
\def\pxbb@set@full@ja@enc{%
  \let\pxbb@full@ja@enc\pxbb@dflt@ja@enc
  \csname pxbb@SFJE/\cy@encoding\endcsname}
\fi % pxbb@switchfont

\fi %=================================== end

%%------ all done
\endinput
%% EOF

%
%   Roman, H      Gothic, H     Roman, V      Gothic, H     : metric encod.
%   ------------  ------------  ------------  ------------  : ------ --------
%   umin10        ugoth10       utmin10       utgoth10      : min10  JIS-old 
%   ujis          ujisg         ujis-v        ujisg-v       : jis    JIS-old 
%   ujisn         ujisng        ujisn-v       ujisng-v      : jisn   JIS-old 
% * urml          ugbm          urmlv         ugbmv         : RAW    JIS-old 
%   upjisr-h      upjisg-h      upjisr-v      upjisg-v      : upjpn  JIS-bmp 
%   upjisr-hq     upjisg-hq                                 : upjpn  JIS-old 
%   upjpnrm-h     upjpngt-h     upjpnrm-v     upjpngt-v     : upjpn  JIS-full
% * uprml         upgbm         uprmlv        upgmbv        : RAW    JIS-bmp 
% * uprmlq        upgbmq                                    : RAW    JIS-old 
%   upkorrm-h     upkorgt-h     upkorrm-v     upkorgt-v     : upkor  KS      
% * uphysmjm-h    uphygt-h      uphysmjm-v    uphygt-v      : RAW    KS      
%   upschrm-h     upschgt-h     upschrm-v     upschgt-v     : upsch  GB      
% * upstsl-h      upstht-h      upstsl-v      upstht-v      : RAW    GB      
%   uptchrm-h     uptchgt-h     uptchrm-v     uptchgt-v     : uptch  CNS     
% * upmsl-h       upmhm-h       upmsl-v       upmhm-v       : RAW    CNS