\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{librefranklin}
    [2022/09/19 (Bob Tennent)  Supports LibreFranklin fonts for all LaTeX engines.]

\RequirePackage{ifxetex,ifluatex,xkeyval,textcomp}

\newif\iflibrefranklin@otf 
\ifxetex
  \librefranklin@otftrue
\else\ifluatex
  \librefranklin@otftrue
\else  % [pdf]LaTeX
  \librefranklin@otffalse
\fi\fi

\newif\iflibrefranklin@default \librefranklin@defaultfalse
\newif\iflibrefranklin@semibold \librefranklin@semiboldfalse
\newif\iflibrefranklin@extrabold \librefranklin@extraboldfalse
\newif\iflibrefranklin@black \librefranklin@blackfalse
\newif\iflibrefranklin@medium  \librefranklin@mediumfalse
\newif\iflibrefranklin@light  \librefranklin@lightfalse
\newif\iflibrefranklin@extralight  \librefranklin@extralightfalse
\newif\iflibrefranklin@thin  \librefranklin@thinfalse

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

\DeclareOptionX{default}{\librefranklin@defaulttrue}
\DeclareOptionX{sfdefault}{\librefranklin@defaulttrue}
\DeclareOptionX{type1}{\librefranklin@otffalse}
\DeclareOptionX{semibold}{\librefranklin@semiboldtrue}
\DeclareOptionX{extrabold}{\librefranklin@extraboldtrue}
\DeclareOptionX{black}{\librefranklin@blacktrue}
\DeclareOptionX{bold}{\librefranklin@semiboldfalse}
\DeclareOptionX{medium}{\librefranklin@mediumtrue}
\DeclareOptionX{regular}{\librefranklin@mediumfalse}
\DeclareOptionX{light}{\librefranklin@lightfalse}
\DeclareOptionX{extralight}{\librefranklin@extralightfalse}
\DeclareOptionX{thin}{\librefranklin@thinfalse}

\ExecuteOptionsX{bold,regular}
\ProcessOptionsX\relax

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

\else % type1

  \def\bfseries@sf{b}
  \iflibrefranklin@semibold\def\bfseries@sf{sb}\fi
  \iflibrefranklin@extrabold\def\bfseries@sf{eb}\fi
  \iflibrefranklin@black\def\bfseries@sf{ub}\fi
  \def\mdseries@sf{m}
  \iflibrefranklin@medium\def\mdseries@sf{medium}\fi
  \iflibrefranklin@light\def\mdseries@sf{l}\fi
  \iflibrefranklin@extralight\def\mdseries@sf{el}\fi
  \iflibrefranklin@thin\def\mdseries@sf{ul}\fi



\fi

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

\iflibrefranklin@otf
  \def\librefranklin@regular{Regular}
  \defaultfontfeatures{
        Ligatures = TeX ,
        Scale     = \LibreFranklin@scale ,
        Extension = .otf }
    \setsansfont
        [ UprightFont    = *-\librefranklin@regstyle ,
          ItalicFont     = *-\ifx\librefranklin@regstyle\librefranklin@regular Italic\else\librefranklin@regstyle Italic\fi ,
          BoldFont       = *-\librefranklin@boldstyle , 
          BoldItalicFont = *-\librefranklin@boldstyle Italic ]
        {LibreFranklin}
  % grab current family in case of subsequent change:
  \let\librefranklinfamily\sfdefault  
  \iflibrefranklin@default\renewcommand*\familydefault{\librefranklinfamily}\fi
  \providecommand\sufigures{\addfontfeatures{VerticalPosition=Superior}}
  \newfontfamily\librefranklin
        [ UprightFont    = *-\librefranklin@regstyle ,
          ItalicFont     = *-\ifx\librefranklin@regstyle\librefranklin@regular Italic\else\librefranklin@regstyle Italic\fi ,
          BoldFont       = *-\librefranklin@boldstyle , 
          BoldItalicFont = *-\librefranklin@boldstyle Italic ]
        {LibreFranklin}
\else % type1
  \fa@naming@exception{figures}{{superior}{tabular}}{Sup}
  \def\sufigures{\@nomath\sufigures
      \fontfigurestyle{superior}\selectfont}
  \DeclareTextFontCommand{\textsu}{\sufigures}
  \let\textsuperior\textsu
  \def\librefranklinfamily{LibreFranklin-TLF}
  \newcommand*\librefranklin{\fontfamily{\librefranklinfamily}\selectfont}
  \def\sfdefault{\librefranklinfamily}
  \iflibrefranklin@default\edef\familydefault{\sfdefault}\edef\seriesdefault{\mdseries@sf}\fi
\fi

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

\endinput