\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{cabin}
    [2023/09/25 (Bob Tennent)  Supports Cabin fonts for all LaTeX engines.]

\RequirePackage{ifxetex,ifluatex,xkeyval,textcomp}

\newif\ifcabin@otf 
\ifxetex
  \cabin@otftrue
\else\ifluatex
  \cabin@otftrue
\else  % [pdf]LaTeX
  \cabin@otffalse
\fi\fi

\newif\ifcabin@default \cabin@defaultfalse
\newif\ifcabin@lining \cabin@liningfalse
\newif\ifcabin@tabular \cabin@tabularfalse
\newif\ifcabin@semibold \cabin@semiboldfalse
\newif\ifcabin@medium  \cabin@mediumfalse
\newif\ifcabin@condensed \cabin@condensedfalse

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

\DeclareOptionX{default}{\cabin@defaulttrue}
\DeclareOptionX{sfdefault}{\cabin@defaulttrue}
\DeclareOptionX{type1}{\cabin@otffalse}
\DeclareOptionX{semibold}{\cabin@semiboldtrue}
\DeclareOptionX{bold}{\cabin@semiboldfalse}
\DeclareOptionX{medium}{\cabin@mediumtrue}
\DeclareOptionX{regular}{\cabin@mediumfalse}
\DeclareOptionX{condensed}{\cabin@condensedtrue}

\ExecuteOptionsX{bold,regular}
\ProcessOptionsX\relax


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

\ifcabin@otf

  \def\cabin@boldstyle{Bold}
  \ifcabin@semibold\def\cabin@boldstyle{SemiBold}\fi
  \def\cabin@regstyle{Regular}
  \ifcabin@medium\def\cabin@regstyle{Medium}\fi

\else % type1

  \ifcabin@condensed
    \def\bfseries@sf{bc}
    \ifcabin@semibold\def\bfseries@sf{sbc}\fi
    \def\mdseries@sf{c}
    \ifcabin@medium\def\mdseries@sf{mediumcondensed}\fi
    \def\seriesdefault{\mdseries@sf}
  \else
    \def\bfseries@sf{b}
    \ifcabin@semibold\def\bfseries@sf{sb}\fi
    \def\mdseries@sf{m}
    \ifcabin@medium\def\mdseries@sf{medium}\fi
  \fi
\fi

\ifcabin@otf
  \ifxetex\XeTeXtracingfonts=1\fi
  \defaultfontfeatures{
        Ligatures = TeX ,
        Scale     = \Cabin@scale ,
        Extension = .otf }
  \def\cabin@regular{Regular}
  \def\cabin@semibold{SemiBold}
  \ifcabin@condensed
    \setsansfont
        [ UprightFont    = *-\cabin@regstyle Condensed,
          ItalicFont     = *-\ifx\cabin@regstyle\cabin@regular Italic\else\cabin@regstyle Italic\fi Condensed,
          BoldFont       = *-\cabin@boldstyle Condensed, 
          BoldItalicFont = *-\ifx\cabin@boldstyle\cabin@semibold Semibold\else\cabin@boldstyle\fi ItalicCondensed ]
        {CabinCondensed}
  \else
    \setsansfont
        [ UprightFont    = *-\cabin@regstyle ,
          ItalicFont     = *-\ifx\cabin@regstyle\cabin@regular Italic\else\cabin@regstyle Italic\fi ,
          BoldFont       = *-\cabin@boldstyle , 
          BoldItalicFont = *-\cabin@boldstyle Italic ]
        {Cabin}
  \fi
  % grab current family in case of subsequent change:
  \let\cabinfamily\sfdefault  
  \ifcabin@default\renewcommand*\familydefault{\cabinfamily}\fi
  \newfontfamily\cabin
        [ UprightFont    = *-\cabin@regstyle ,
          ItalicFont     = *-\ifx\cabin@regstyle\cabin@regular Italic\else\cabin@regstyle Italic\fi ,
          BoldFont       = *-\cabin@boldstyle , 
          BoldItalicFont = *-\cabin@boldstyle Italic ]
        {Cabin}
  \newfontfamily\cabincondensed
        [ UprightFont    = *-\cabin@regstyle Condensed,
          ItalicFont     = *-\ifx\cabin@regstyle\cabin@regular Italic\else\cabin@regstyle Italic\fi Condensed,
          BoldFont       = *-\cabin@boldstyle Condensed, 
          BoldItalicFont = *-\ifx\cabin@boldstyle\cabin@semibold Semibold\else\cabin@boldstyle\fi ItalicCondensed ]
        {CabinCondensed}
\else % type1
  \def\cabinfamily{Cabin-TLF}
  \newcommand*\cabin{\fontfamily{\cabinfamily}\selectfont}
  \newcommand*\cabincondensed{%
    \def\bfseries@sf{bc}
    \ifcabin@semibold\def\bfseries@sf{sbc}\fi
    \def\mdseries@sf{c}
    \ifcabin@medium\def\mdseries@sf{mediumcondensed}\fi
    \mdseries
  }
  \def\sfdefault{\cabinfamily}
  \ifcabin@default\edef\familydefault{\sfdefault}\edef\seriesdefault{\mdseries@sf}\fi
\fi

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

\endinput