% Language definition file (part of polyglossia v2.10 -- 2026/04/18)
%
\ProvidesFile{gloss-japanese.ldf}[polyglossia: module for Japanese]

\PolyglossiaSetup{japanese}{
	bcp47=ja,
	bcp47-language=ja,
	bcp47-region=JP,
	bcp47-script=Hrkt,
	script=CJK,
	scripttag=kana,
	language=Japanese,
	langtag=JAN,
	hyphennames={nohyphenation},
	frenchspacing=false,
	localnumeral=japanesenumerals,
	Localnumeral=japanesenumerals
}

% BCP-47 compliant aliases
\setlanguagealias*{japanese}{ja}

\providecommand*\presection{}
\providecommand*\presubsection{}
\providecommand*\presubsubsection{}
\providecommand*\postsection{}
\providecommand*\postsubsection{}
\providecommand*\postsubsubsection{}
\let\xpg@save@presection\presection
\let\xpg@save@presubsection\presubsection
\let\xpg@save@presubsubsection\presubsubsection
\let\xpg@save@postsection\postsection
\let\xpg@save@postsubsection\postsubsection
\let\xpg@save@postsubsubsection\postsubsubsection
\let\xpg@save@seccntformat\@seccntformat

\def\japanese@capsformat{%
	\def\@seccntformat##1{%
		\csname pre##1\endcsname%
		\csname the##1\endcsname%
		\csname post##1\endcsname%
	}%
	\def\postsection{節\space}%
	\def\postsubsection{節\space}%
	\def\postsubsubsection{節\space}%
	\def\presection{第}%
	\def\presubsection{第}%
	\def\presubsubsection{第}%
}

\def\nojapanese@capsformat{%
    \let\presection\xpg@save@presection%
    \let\presubsection\xpg@save@presubsection%
    \let\presubsubsection\xpg@save@presubsubsection%
    \let\postsection\xpg@save@postsection%
    \let\postsubsection\xpg@save@postsubsection%
    \let\postsubsubsection\xpg@save@postsubsubsection%
    \let\@seccntformat\xpg@save@seccntformat%
}

\def\captionsjapanese{%
	\def\refname{参考文献}%
	\def\abstractname{概要}%
	\def\bibname{文献目録}%
	\def\prefacename{端書き}%
	\def\chaptername##1##2{第##1##2 章}%
	\def\appendixname{付録}%
	\def\contentsname{目次}%
	\def\listfigurename{図目次}%
	\def\listtablename{表目次}%
	\def\indexname{索引}%
	\def\figurename{図}%
	\def\tablename{表}%
	\def\partname##1##2{第##1##2 部}%
	\def\pagename##1##2{第##1##2 頁}%
	\def\seename{参照}%
	\def\alsoname{参照}%
	\def\enclname{添付}%
	\def\ccname{同報}%
	\def\headtoname{宛先}%
	\def\proofname{証明}%
	\def\glossaryname{用語集}%
 }

\newif\if@WameiReki \@WameiRekifalse%
\newif\if@WameiTosi \@WameiTosifalse%
\newif\if@WameiTuki \@WameiTukifalse%
\newif\if@WameiHi \@WameiHifalse%
\newif\if@IzumoTuki \@IzumoTukifalse%
\newcount\c@TempJNum%

\def\@JapaneseDigit#1{%
	\ifcase#1\or 一\or 二\or 三\or 四\or 五\or%
		六\or 七\or 八\or 九\or 十\or%
		十一\or 十二\or 十三\or 十四\or 十五\or%
		十六\or 十七\or 十八\or 十九\or 廿\or%
		廿一\or 廿二\or 廿三\or 廿四\or 廿五\or%
		廿六\or 廿七\or 廿八\or 廿九\or 丗\or%
		丗一\or 丗二\or 丗三\or 丗四\or 丗五\or%
		丗六\or 丗七\or 丗八\or 丗九\or 四十\or%
		四十一\or 四十二\or 四十三\or 四十四\or 四十五\or%
		四十六\or 四十七\or 四十八\or 四十九\or 五十\or%
		五十一\or 五十二\or 五十三\or 五十四\or 五十五\or%
		五十六\or 五十七\or 五十八\or 五十九\or 六十\or%
		六十一\or 六十二\or 六十三\or 六十四\or 六十五\or%
		六十六\or 六十七\or 六十八\or 六十九\or 七十\or%
		七十一\or 七十二\or 七十三\or 七十四\or 七十五\or%
		七十六\or 七十七\or 七十八\or 七十九\or 八十\or%
		八十一\or 八十二\or 八十三\or 八十四\or 八十五\or%
		八十六\or 八十七\or 八十八\or 八十九\or 九十\or%
		九十一\or 九十二\or 九十三\or 九十四\or 九十五\or%
		九十六\or 九十七\or 九十八\or 九十九%
	\else
		\@ctrerr%
	\fi\relax%
}

\def\@JapaneseNum#1{%
	\c@TempJNum=#1\divide\c@TempJNum by 1000\relax%
	\ifnum\c@TempJNum=\z@\c@TempJNum=#1%
		\divide\c@TempJNum by 100\relax%
		\ifnum\c@TempJNum=\z@\@JapaneseDigit{#1}\relax%
		\else
			\ifcase\c@TempJNum\or 百\or 二百\or 三百\or 四百\or 五百\or
				六百\or 七百\or 八百\or 九百%
			\fi
			\c@TempJNum=#1\divide\c@TempJNum by 100\multiply\c@TempJNum by -100\advance\c@TempJNum#1\@JapaneseDigit\c@TempJNum\relax%
		\fi%
	\else
		\ifcase\c@TempJNum\or 千\or 二千\or 三千\or 四千\or 五千\or
			六千\or 七千\or 八千\or 九千%
		\fi
		\c@TempJNum=#1\divide\c@TempJNum by 1000\multiply\c@TempJNum by -1000\advance\c@TempJNum#1\divide\c@TempJNum by 100\relax%
		\ifnum\c@TempJNum=\z@\c@TempJNum=#1%
			\divide\c@TempJNum by 100\multiply\c@TempJNum by -100\advance\c@TempJNum#1\@JapaneseDigit\c@TempJNum\relax%
		\else
			\ifcase\c@TempJNum\or 百\or 二百\or 三百\or 四百\or 五百\or
				六百\or 七百\or 八百\or 九百%
			\fi
			\c@TempJNum=#1\divide\c@TempJNum by 100\multiply\c@TempJNum by -100\advance\c@TempJNum#1\@JapaneseDigit\c@TempJNum\relax%
		\fi
	\fi
}

\def\@japanesenumber#1{%
	\@tempcnta=#1%
	\ifnum\@tempcnta=\z@{〇}%
	\else
		\ifnum\@tempcnta<\z@{負}%
			\multiply\@tempcnta by -1%
		\fi
		\@tempcntb=\@tempcnta\divide\@tempcntb by 10000\relax%
		\ifnum\@tempcntb=\z@\@JapaneseNum%
			\@tempcnta%
		\else
			\@tempcntb=\@tempcnta\divide\@tempcntb by 100000000\relax%
			\ifnum\@tempcntb=\z@\@tempcntb=\@tempcnta%
				\divide\@tempcntb by 10000%
				\@JapaneseNum\@tempcntb{万}\@tempcntb=\@tempcnta%
				\divide\@tempcntb by 10000\multiply\@tempcntb by -10000%
				\advance\@tempcntb\@tempcnta\relax\@JapaneseNum\@tempcntb%
			\else
				\@JapaneseNum\@tempcntb{億}\@tempcntb=\@tempcnta%
				\divide\@tempcntb by 100000000\multiply\@tempcntb by -100000000%
				\advance\@tempcntb\@tempcnta\divide\@tempcntb by 10000\relax%
				\ifnum\@tempcntb=\z@%
				\else
					\@JapaneseNum\@tempcntb{万}%
				\fi
				\@tempcntb=\@tempcnta\divide\@tempcntb by 10000%
				\multiply\@tempcntb by -10000\advance\@tempcntb\@tempcnta%
				\@JapaneseNum\@tempcntb%
			\fi
		\fi
	\fi
}

\def\japanesenumber#1{%
	\expandafter\@japanesenumber\csname c@#1\endcsname%
}

\newcommand{\japanesenumerals}[2]{\@japanesenumber{#2}}

\def\datejapanese{%
	{%
		\ifnum\year<1868%
			\xdef\the@WarekiCur{}%
		\else
			\ifnum\year<1912%
				\xdef\the@WarekiCur{明治}\advance\year-1867\relax%
			\else
				\ifnum\year<1926%
					\xdef\the@WarekiCur{大正}\advance\year-1911\relax%
  				\else
					\ifnum\year<1989%
						\xdef\the@WarekiCur{昭和}\advance\year-1925\relax%
  					\else
						\xdef\the@WarekiCur{平成}\advance\year-1988\relax%
					\fi
				\fi
			\fi
		\fi
		\xdef\the@WameiTosi{\the\year}%
	}%
	\def\西暦{\@WameiRekifalse \@WameiTukifalse \@WameiHifalse}%
	\def\和暦{\@WameiRekitrue \@WameiTosifalse \@WameiTukifalse \@WameiHifalse}%
	\def\和名暦{\@WameiTositrue \@WameiTukitrue \@WameiHitrue}%
	\def\数字暦{\@WameiTosifalse \@WameiTukifalse \@WameiHifalse}%
	\def\出雲月{\@IzumoTukitrue}%
	\def\大和月{\@IzumoTukifalse}%
	\def\today{%
		\if@WameiReki%
			\the@WarekiCur%
			\if@WameiTosi%
				\@JapaneseNum\the@WameiTosi%
			\else
				\,\the@WameiTosi%
			\fi
		\else
			\number\year\,%
		\fi
		{年}%
		\if@WameiTuki%
			\ifcase\month\or 睦月\or 如月\or 弥生\or 卯月\or 皐月\or
				水無月\or 文月\or 葉月\or 長月\or
				\if@IzumoTuki 神在月\else 神無月\fi
				\or 霜月\or 師走%
			\fi
		\else
			\,\number\month\,%
		{月}%
		\fi
		\if@WameiHi%
			\@JapaneseNum\day%
		\else
			\,\number\day\,%
		\fi
		{日}%
	}%
}

\ifluatex
  \@ifundefined{xpg@attr@cjkspacing}{\newattribute\xpg@attr@cjkspacing}{}
  \directlua{ require"polyglossia-cjk-spacing" }
  \def\japanese@spacing{\xpg@attr@cjkspacing=\@ne}
  \def\nojapanese@spacing{\unsetattribute\xpg@attr@cjkspacing}
\else
  \@ifundefined{xpg@orig@XeTeXlinebreakskip}{\newskip\xpg@orig@XeTeXlinebreakskip}{}
  \xpg@orig@XeTeXlinebreakskip=\XeTeXlinebreakskip
  \def\japanese@spacing{%
    \XeTeXlinebreaklocale "ja"%
    \XeTeXlinebreakskip = 0pt plus 0.1em minus 0.01em%
  }
  \def\nojapanese@spacing{%
    \XeTeXlinebreakskip=\xpg@orig@XeTeXlinebreakskip%
    \XeTeXlinebreaklocale ""%
   }
\fi

\def\noextras@japanese{%
  \nojapanese@capsformat%
  \nojapanese@spacing%
}

\def\blockextras@japanese{%
  \japanese@capsformat%
  \japanese@spacing%
}

\def\inlineextras@japanese{%
  \japanese@capsformat%
  \japanese@spacing%
}

\ifxetex
  % \XeTeXlinebreaklocale is global,
  % so we need to reset after nested language got closed
  \def\nestedextras@japanese{%
    \japanese@spacing%
  }
\fi

% Based on contributions of Toru Inagaki, Norio Iwase, François Charette