\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{noto-serif}
    [2019/04/22 (Bob Tennent)  Supports NotoSerif fonts for all LaTeX engines.]

\RequirePackage{ifxetex,ifluatex,xkeyval,textcomp}

\newif\ifnotoserif@otf 
\ifxetex
  \notoserif@otftrue
\else\ifluatex
  \notoserif@otftrue
\else  % [pdf]LaTeX
  \notoserif@otffalse
\fi\fi

\newcommand*{\NotoSerif@scale}{1}
\DeclareOptionX{scaled}{\renewcommand*{\NotoSerif@scale}{#1}}
\DeclareOptionX{scale}{\renewcommand*{\NotoSerif@scale}{#1}}


\DeclareOptionX{sfdefault}{}
\DeclareOptionX{type1}{\notoserif@otffalse}


\newif\ifnotoserif@oldstyle \notoserif@oldstylefalse
\newif\ifnotoserif@proportional \notoserif@proportionalfalse

\DeclareOptionX{lining}{\notoserif@oldstylefalse}
\DeclareOptionX{lf}{\notoserif@oldstylefalse}
\DeclareOptionX{tabular}{\notoserif@proportionalfalse}
\DeclareOptionX{tf}{\notoserif@proportionalfalse}
\DeclareOptionX{proportional}{\notoserif@proportionaltrue}
\DeclareOptionX{pf}{\notoserif@proportionaltrue}
\DeclareOptionX{oldstyle}{\notoserif@oldstyletrue}
\DeclareOptionX{osf}{\notoserif@oldstyletrue}

\newif\ifnotoserif@thin \notoserif@thinfalse
\newif\ifnotoserif@extralight \notoserif@extralightfalse
\newif\ifnotoserif@light \notoserif@lightfalse
\newif\ifnotoserif@medium \notoserif@mediumfalse
\newif\ifnotoserif@semibold \notoserif@semiboldfalse
\newif\ifnotoserif@extrabold \notoserif@extraboldfalse
\newif\ifnotoserif@black \notoserif@blackfalse

\DeclareOptionX{thin}{\notoserif@thintrue}
\DeclareOptionX{extralight}{\notoserif@extralighttrue}
\DeclareOptionX{light}{\notoserif@lighttrue}
\DeclareOptionX{regular}{\notoserif@lightfalse\notoserif@thinfalse\notoserif@extralightfalse\notoserif@mediumfalse}
\DeclareOptionX{medium}{\notoserif@mediumtrue}
\DeclareOptionX{semibold}{\notoserif@semiboldtrue}
\DeclareOptionX{extrabold}{\notoserif@extraboldtrue}
\DeclareOptionX{black}{\notoserif@blacktrue}
\DeclareOptionX{bold}{\notoserif@blackfalse\notoserif@semiboldfalse\notoserif@extraboldfalse}


\ProcessOptionsX\relax

\ifnotoserif@otf
  \def\notoserif@boldstyle{Bold}
  \ifnotoserif@semibold\def\notoserif@boldstyle{SemiBold}\fi
  \ifnotoserif@extrabold\def\notoserif@boldstyle{ExtraBold}\fi
  \ifnotoserif@black\def\notoserif@boldstyle{Black}\fi
  \def\notoserif@regstyle{Regular}
  \ifnotoserif@thin\def\notoserif@regstyle{Thin}\fi
  \ifnotoserif@extralight\def\notoserif@regstyle{ExtraLight}\fi
  \ifnotoserif@light\def\notoserif@regstyle{Light}\fi
  \ifnotoserif@medium\def\notoserif@regstyle{Medium}\fi

\else % type1
  \def\bfseries@rm{bold}
  \ifnotoserif@semibold\def\bfseries@rm{semibold}\fi
  \ifnotoserif@extrabold\def\bfseries@rm{extrabold}\fi
  \ifnotoserif@black\def\bfseries@rm{black}\fi
  \def\mdseries@rm{regular}
  \ifnotoserif@thin\def\mdseries@rm{thin}\fi
  \ifnotoserif@extralight\def\mdseries@rm{extralight}\fi
  \ifnotoserif@light\def\mdseries@rm{light}\fi
  \ifnotoserif@medium\def\mdseries@rm{medium}\fi
  \def\seriesdefault{\mdseries@rm}
  
\fi

\ifnotoserif@otf
  
  \def\notoserif@figurestyle{Lining}
  \ifnotoserif@oldstyle\def\notoserif@figurestyle{OldStyle}\fi
  \def\notoserif@figurealign{Monospaced}
  \ifnotoserif@proportional\def\notoserif@figurealign{Proportional}\fi

\else % type1

  \def\notoserif@figurestyle{LF}
  \ifnotoserif@oldstyle\def\notoserif@figurestyle{OsF}\fi
  \def\notoserif@figurealign{T}
  \ifnotoserif@proportional\def\notoserif@figurealign{}\fi

\fi

\ifnotoserif@otf
  \RequirePackage{fontspec}
\else
  \RequirePackage{fontenc,fontaxes,mweights}
  \fa@naming@exception{figures}{{superior}{proportional}}{Sup}
  \fa@naming@exception{figures}{{superior}{tabular}}{Sup}
  \def\sufigures{\@nomath\sufigures
      \fontfigurestyle{superior}\selectfont}
  \DeclareTextFontCommand{\textsu}{\sufigures}
  \let\textsuperior\textsu
\fi

\ifnotoserif@otf
  \def\notoserif@regular{Regular}
  \ifxetex\XeTeXtracingfonts=1\fi
  \defaultfontfeatures{
        Ligatures = TeX ,
        Scale     = \NotoSerif@scale ,
        Extension = .otf }
     \setmainfont 
        [ UprightFont    = *-\notoserif@regstyle ,
          ItalicFont     = *-\ifx\notoserif@regstyle\notoserif@regular
                               Italic
                               \else\notoserif@regstyle Italic\fi ,
          BoldFont       = *-\notoserif@boldstyle , 
          BoldItalicFont = *-\notoserif@boldstyle Italic ]
        {NotoSerif}
  \newfontfamily\notoserif
        [ UprightFont    = *-\notoserif@regstyle ,
          ItalicFont     = *-\ifx\notoserif@regstyle\notoserif@regular
                               Italic
                               \else\notoserif@regstyle Italic\fi ,
          BoldFont       = *-\notoserif@boldstyle , 
          BoldItalicFont = *-\notoserif@boldstyle Italic ]
        {NotoSerif}
\else % type1
  \def\notoseriffamily{NotoSerif-\notoserif@figurealign\notoserif@figurestyle}
  \newcommand*\notoserif{\fontfamily{\notoseriffamily}\selectfont}
  \def\rmdefault{\notoseriffamily} 
\fi

\newcommand*\notoseriflgr{\fontencoding{LGR}\fontfamily{NotoSerif-TLF}\selectfont}

\ifnotoserif@otf
  % turn off defaults in case other fonts are selected:
  \defaultfontfeatures{}
\fi

\endinput