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\ProvidesFile{gloss-farsi.ldf}[polyglossia: module for farsi]
\ifluatex
  \xpg@warning{Farsi is not supported with LuaTeX.\MessageBreak
I will proceed with the compilation, but\MessageBreak
the output is not guaranteed to be correct\MessageBreak
and may look very wrong.}
\fi
\RequireBidi
\RequirePackage{arabicnumbers}
\RequirePackage{farsical}
\RequirePackage{hijrical}
\PolyglossiaSetup{farsi}{
  script=Arabic,
  direction=RL,
  scripttag=arab,
  langtag=FAR,
  hyphennames={nohyphenation},
  fontsetup=true
}

\newif\if@western@numerals
\def\tmp@western{western}
\define@key{farsi}{numerals}[eastern]{%
  \def\@tmpa{#1}%
  \ifx\@tmpa\tmp@western\@western@numeralstrue\else%
    \@western@numeralsfalse%
  \fi}

%this is needed for \abjad in arabicnumbers.sty
\def\tmp@true{true}
\define@key{farsi}{abjadjimnotail}[true]{%
  \def\@tmpa{#1}%
  \ifx\@tmpa\tmp@true\abjad@jim@notailtrue%
  \else
    \abjad@jim@notailfalse
  \fi}

% NOT YET USED
\define@key{farsi}{locale}[default]{%
  \def\@farsi@locale{#1}}

%TODO add option for CALENDAR

\setkeys{farsi}{locale,numerals}

\def\farsigregmonth#1{\ifcase#1%
  \or ژانویه\or فوریه\or مارس\or آوریل\or مه\or ژوئن\or ژوئیه\or اوت\or سپتامبر\or اکتبر\or نوامبر\or دسامبر\fi}
\def\farsimonth#1{\ifcase#1%
  \or کانون ثانی\or شباط\or اذار%%or ادار
    \or نیسان\or ایار\or حزیران\or تموز\or آب\or ایلول\or تشرین اول\or تشرین ثانی\or کانون اول\fi}

%\Hijritoday is now locale-aware and will format the date with this macro:
\DefineFormatHijriDate{farsi}{\@ensure@RTL{%
\farsinumber{\value{Hijriday}}\space\HijriMonthArabic{\value{Hijrimonth}}\space\farsinumber{\value{Hijriyear}}}}

\def\captionsfarsi{%
\def\prefacename{\@ensure@RTL{پیشگفتار}}%
\def\refname{\@ensure@RTL{مراجع}}%
\def\abstractname{\@ensure@RTL{چکیده}}%
\def\bibname{\@ensure@RTL{کتاب‌نامه}}%
\def\chaptername{\@ensure@RTL{فصل}}%
\def\appendixname{\@ensure@RTL{پیوست}}%
\def\contentsname{\@ensure@RTL{فهرست مطالب}}%
\def\listfigurename{\@ensure@RTL{لیست تصاویر}}%
\def\listtablename{\@ensure@RTL{لیست جداول}}%
\def\indexname{\@ensure@RTL{نمایه}}%
\def\figurename{\@ensure@RTL{شكل}}%
\def\tablename{\@ensure@RTL{جدول}}%
\def\partname{\@ensure@RTL{بخش}}%
\def\enclname{\@ensure@RTL{پیوست}}%
\def\ccname{\@ensure@RTL{رونوشت}}%
\def\headtoname{\@ensure@RTL{به}}%
\def\pagename{\@ensure@RTL{صفحة}}%
\def\seename{\@ensure@RTL{ببینید}}%
\def\alsoname{\@ensure@RTL{نیز ببینید}}%
\def\proofname{\@ensure@RTL{برهان}}%
\def\glossaryname{\@ensure@RTL{دانش‌نامه}}%
}
\def\datefarsi{%
   \def\today{\@ensure@RTL{\farsinumber\day\space\farsigregmonth{\month}\space\farsinumber\year}}%
}

\def\farsinumber#1{%
  \if@western@numerals
    \number#1%
  \else
    \ifnum\XeTeXcharglyph"06F0 > 0%
      \farsidigits{\number#1}%
      %%{\protect\addfontfeature{Mapping=farsidigits}\number#1}%
    \else%
      \arabicdigits{\number#1}%
      %%{\protect\addfontfeature{Mapping=arabicdigits}\number#1}%
    \fi
  \fi}

%\def\farsinum#1{\expandafter\farsinumber\csname c@#1\endcsname}
%\def\farsibracenum#1{(\expandafter\farsinumber\csname c@#1\endcsname)}
%\def\farsiornatebracenum#1{\char"FD3E\expandafter\farsinumber\csname c@#1\endcsname\char"FD3F}
%\def\farsialph#1{\expandafter\@farsialph\csname c@#1\endcsname}

\def\farsi@numbers{%
   \let\@latinalph\@alph%
   \let\@latinAlph\@Alph%
   \let\@alph\abjad%
   \let\@Alph\abjad%
}
\def\nofarsi@numbers{%
  \let\@alph\@latinalph%
  \let\@Alph\@latinAlph%
  }

\def\farsi@globalnumbers{%
   \let\orig@arabic\@arabic%
   \let\@arabic\farsinumber%
   % For some reason \thefootnote needs to be set separately:
   \renewcommand\thefootnote{\protect\farsinumber{\c@footnote}}%
   }

\def\nofarsi@globalnumbers{
   \let\@arabic\orig@arabic%
   \renewcommand\thefootnote{\protect\number{\c@footnote}}%
   }

\def\blockextras@farsi{%
   \let\@@MakeUppercase\MakeUppercase%
   \def\MakeUppercase##1{##1}%
   }
\def\noextras@farsi{%
   \let\MakeUppercase\@@MakeUppercase%
   }
\endinput