\ProvidesPackage{AlegreyaSans}[%
   2019/03/07 (Bob Tennent)  Supports AlegreyaSans fonts for all LaTeX engines. ] 

\RequirePackage{ifxetex,ifluatex,textcomp}

\newif\ifAlegreyaSans@otf
\ifxetex
  \AlegreyaSans@otftrue
\else\ifluatex
  \AlegreyaSans@otftrue
\else  % [pdf]LaTeX
  \AlegreyaSans@otffalse
\fi\fi

\newif\ifAlegreyaSans@lining \AlegreyaSans@liningtrue
\newif\ifAlegreyaSans@tabular \AlegreyaSans@tabularfalse
\newif\ifAlegreyaSans@black \AlegreyaSans@blackfalse

\newcommand*{\AlegreyaSans@scale}{1}  
\RequirePackage{xkeyval}
\DeclareOptionX{scaled}{\renewcommand*{\AlegreyaSans@scale}{#1}}
\DeclareOptionX{scale}{\renewcommand*{\AlegreyaSans@scale}{#1}}

\DeclareOptionX{type1}{\AlegreyaSans@otffalse}

\newif\ifAlegreyaSans@default \AlegreyaSans@defaultfalse
\DeclareOptionX{sfdefault}{\AlegreyaSans@defaulttrue}

\DeclareOptionX{lining}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@liningtrue
\else
  \AlegreyaSans@liningfalse
\fi
}
\DeclareOptionX{lf}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@liningtrue
\else
  \AlegreyaSans@liningfalse
\fi
}
\DeclareOptionX{oldstyle}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@liningfalse
\else
  \AlegreyaSans@liningtrue
\fi
}

\DeclareOptionX{osf}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@liningfalse
\else
  \AlegreyaSans@liningtrue
\fi
}

\DeclareOptionX{tabular}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@tabulartrue
\else
  \AlegreyaSans@tabularfalse
\fi
}
\DeclareOptionX{tf}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@tabulartrue
\else
  \AlegreyaSans@tabularfalse
\fi
}
\DeclareOptionX{proportional}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@tabularfalse
\else
  \AlegreyaSans@tabulartrue
\fi
}

\DeclareOptionX{pf}[true]{%
\@nameuse{if#1}%
  \AlegreyaSans@tabularfalse
\else
  \AlegreyaSans@tabulartrue
\fi
}

\def\bfseries@sf{b}\def\AlegreyaSans@boldstyle{Bold}
\DeclareOptionX{black}{\edef\bfseries@sf{k}\edef\AlegreyaSans@boldstyle{Black}}
\DeclareOptionX{extrabold}{\edef\bfseries@sf{eb}\edef\AlegreyaSans@boldstyle{ExtraBold}}

\def\mdseries@sf{m}\def\AlegreyaSans@regularstyle{Regular}
\DeclareOptionX{thin}{\edef\mdseries@sf{t}\edef\AlegreyaSans@regularstyle{Thin}}
\DeclareOptionX{light}{\edef\mdseries@sf{l}\edef\AlegreyaSans@regularstyle{Light}}
\DeclareOptionX{medium}{\edef\mdseries@sf{mb}\edef\AlegreyaSans@regularstyle{Medium}}

\ProcessOptionsX\relax

\ifAlegreyaSans@otf
  \ifAlegreyaSans@lining
    \def\AlegreyaSans@figurestyle{Lining}
  \else
    \def\AlegreyaSans@figurestyle{OldStyle}
  \fi
  \ifAlegreyaSans@tabular
    \def\AlegreyaSans@figurealign{Monospaced}
  \else
    \def\AlegreyaSans@figurealign{Proportional}
  \fi

\else % type1

  \ifAlegreyaSans@lining
    \def\AlegreyaSans@figurestyle{LF} 
  \else
    \def\AlegreyaSans@figurestyle{OsF} 
  \fi
  \ifAlegreyaSans@tabular
    \def\AlegreyaSans@figurealign{T}
  \else
    \def\AlegreyaSans@figurealign{}
  \fi
\fi


\ifAlegreyaSans@otf
  \RequirePackage{fontspec}
\else
  \RequirePackage{fontenc,fontaxes,mweights}
\fi

\ifAlegreyaSans@otf
  \def\AlegreyaSans@regular{Regular}
  \ifxetex\XeTeXtracingfonts=1\fi
  \defaultfontfeatures{
     Ligatures = TeX ,
     Extension = .otf ,
     Scale     = \AlegreyaSans@scale ,
  }
  \setsansfont
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-\AlegreyaSans@regularstyle ,
        ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
        BoldFont       = *-\AlegreyaSans@boldstyle , 
        BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
      ]
      {AlegreyaSans}
  % grab current family in case of subsequent change:
  \let\AlegreyaSansfamily\sfdefault 
  \def\useosf{%
    \edef\AlegreyaSans@figurestyle{OldStyle}
    \defaultfontfeatures{
       Ligatures = TeX ,
       Extension = .otf ,
       Scale = \AlegreyaSans@scale ,
    }
    \setsansfont
        [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-\AlegreyaSans@regularstyle ,
        ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
        BoldFont       = *-\AlegreyaSans@boldstyle , 
        BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
        {AlegreyaSans}
    \def\rmfamily{\AlegreyaSans@OsF}
    \defaultfontfeatures{}
  }


  \newfontfamily\AlegreyaSans
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-\AlegreyaSans@regularstyle ,
        ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
        BoldFont       = *-\AlegreyaSans@boldstyle , 
        BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
      ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansOsF
        [ Numbers = {Proportional,OldStyle},
          UprightFont    = *-\AlegreyaSans@regularstyle ,
          ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
          BoldFont       = *-\AlegreyaSans@boldstyle , 
          BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansLF
        [ Numbers = {Proportional,Lining},
          UprightFont    = *-\AlegreyaSans@regularstyle ,
          ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
          BoldFont       = *-\AlegreyaSans@boldstyle , 
          BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansTOsF
        [ Numbers = {Monospaced,OldStyle},
          UprightFont    = *-\AlegreyaSans@regularstyle ,
          ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
          BoldFont       = *-\AlegreyaSans@boldstyle , 
          BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSans@OsF  % for \useosf
        [ Numbers = {\AlegreyaSans@figurealign, OldStyle},
          UprightFont    = *-\AlegreyaSans@regularstyle ,
          ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
          BoldFont       = *-\AlegreyaSans@boldstyle , 
          BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansTLF
        [ Numbers = {Monospaced,Lining},
          UprightFont    = *-\AlegreyaSans@regularstyle ,
          ItalicFont     = *-\ifx\AlegreyaSans@regularstyle\AlegreyaSans@regular Italic\else\AlegreyaSans@regularstyle Italic\fi ,
          BoldFont       = *-\AlegreyaSans@boldstyle , 
          BoldItalicFont = *-\AlegreyaSans@boldstyle Italic ,
        ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansBlack
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-Black ,
        ItalicFont     = *-BlackItalic ,
        BoldFont       = *-Black ,
        BoldItalicFont = *-BlackItalic ,
      ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansExtraBold
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-ExtraBold ,
        ItalicFont     = *-ExtraBoldItalic ,
        BoldFont       = *-ExtraBold ,
        BoldItalicFont = *-ExtraBoldItalic ,
      ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansThin
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-Thin ,
        ItalicFont     = *-ThinItalic ,
        BoldFont       = *-Thin ,
        BoldItalicFont = *-ThinItalic ,
      ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansLight
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-Light ,
        ItalicFont     = *-LightItalic ,
        BoldFont       = *-Light ,
        BoldItalicFont = *-LightItalic ,
      ]
      {AlegreyaSans}
  \newfontfamily\AlegreyaSansMedium
      [ Numbers = {\AlegreyaSans@figurealign,\AlegreyaSans@figurestyle},
        UprightFont    = *-Medium ,
        ItalicFont     = *-MediumItalic ,
        BoldFont       = *-Medium ,
        BoldItalicFont = *-MediumItalic ,
      ]
      {AlegreyaSans}
  \def\sffamily{\AlegreyaSans}
  \ifAlegreyaSans@default
     \edef\familydefault{\AlegreyaSansfamily}
  \fi

  \providecommand\sufigures{\addfontfeatures{VerticalPosition=Superior}}  
  \providecommand\infigures{\addfontfeatures{VerticalPosition=Inferior}}


\else % type1

  \def\AlegreyaSansfamily{AlegreyaSans-\AlegreyaSans@figurealign \AlegreyaSans@figurestyle}
  \def\AlegreyaSans{\fontfamily{\AlegreyaSansfamily}\selectfont}
  \def\AlegreyaSansLF{\fontfamily{AlegreyaSans-LF}\selectfont}
  \def\AlegreyaSansOsF{\fontfamily{AlegreyaSans-OsF}\selectfont}
  \def\AlegreyaSansTLF{\fontfamily{AlegreyaSans-TLF}\selectfont}
  \def\AlegreyaSansTOsF{\fontfamily{AlegreyaSans-TOsF}\selectfont}
  \def\AlegreyaSansThin{\fontfamily{\AlegreyaSansfamily}\fontseries{i}\selectfont}
  \def\AlegreyaSansLight{\fontfamily{\AlegreyaSansfamily}\fontseries{l}\selectfont}
  \def\AlegreyaSansMedium{\fontfamily{\AlegreyaSansfamily}\fontseries{mb}\selectfont}
  \def\AlegreyaSansExtraBold{\fontfamily{\AlegreyaSansfamily}\fontseries{eb}\selectfont}
  \def\AlegreyaSansBlack{\fontfamily{\AlegreyaSansfamily}\fontseries{k}\selectfont}

  \fa@naming@exception{figures}{{superior}{proportional}}{Sup}
  \fa@naming@exception{figures}{{superior}{tabular}}{Sup}
  \providecommand\sufigures{\@nomath\sufigures\fontfigurestyle{superior}\selectfont}

  \fa@naming@exception{figures}{{inferior}{proportional}}{Inf}
  \fa@naming@exception{figures}{{inferior}{tabular}}{Inf}
  \providecommand\infigures{\@nomath\infigures\fontfigurestyle{inferior}\selectfont}

  \def\sfdefault{\AlegreyaSansfamily}
  \def\sffamily{%
    \fontfamily{\AlegreyaSansfamily}\selectfont
    \edef\seriesdefault{\mdseries@sf}%
  }
  \ifAlegreyaSans@default
     \edef\familydefault{\sfdefault}
     \edef\seriesdefault{\mdseries@sf}
  \fi

\fi

\DeclareTextFontCommand{\textsu}{\sufigures}
\DeclareTextFontCommand{\textin}{\infigures}

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

\endinput