FixSmallCaps.sty

% FixSmallCaps.sty
%%%%%%%%%%%%%%
% FROM: http://tex.stackexchange.com/a/262596
%
% Additional: http://tex.stackexchange.com/a/70240
%%%%%%%%%%%%%%


\ProvidesPackage{FixSmallCaps}
%[2017-03-23, Provides fake smallcaps ]
%%%%%%%%%%%%%%
% Fix Smallcaps in fonts that does not have it.
%%%%%%%%%%%%%%
% Usage:
% \usepackage{FixSmallCaps}
%%%%%%%%%%%%%%
% Qirks:
% * Problem with using other enviorments inside this.
% * teletext (textt) does not work as it should. (it is not
%   mono-spaced).
%%%%%%%%%%%%%%
% Background:
% When dealing with fonts that do not have small caps
% it can be a hassle to use different text sizes for
% at different points in words to mimic small caps.
%
% This package redefines the behaviour of \textsc{}
% to mimic the small caps in fonts that do not have
% it, by scaling the lower case letters by to a factor
% of 0.75 of the original size and applys \uppercase.
%%%%%%%%%%%%%%
% NO COPYRIGHT
%%%%%%%%%%%%%%

\RequirePackage{xstring}
\RequirePackage{forloop}
\RequirePackage{relsize}
\RequirePackage{adjustbox}

\newcounter{sccounter}
\newcounter{tempStringLength}


\renewcommand{\textsc}[1]{%
    % this \betterfakesc command requires these two packages:
    %   xstring
    %   forloop
    %
    % First, we obtain the length of the input string.
    \StrLen{#1}[\stringLength]%
    %
    % Our main forloop will be using a condition of “while less than \stringLength”,
    % so we’ll need to increase \stringLength by 1 so the forloop will be able to iterate
    % over the entire string. we’ll use a temporary counter tempStringLength to make
    % this increase. That’s what the next three lines are about.
    \setcounter{tempStringLength}{\stringLength}%
    \addtocounter{tempStringLength}{1}%
    \def\stringLength{\arabic{tempStringLength}}%
    %
    % Here is our main loop. We iterate over the characters in the input string,
    % and the currentLetter is compared to the case rules we have defined. Basically
    % if the currentLetter is any of the lowercase a-z letters, then we apply a
    % “fake small caps” effect to it and output it.
    \forloop[1]{sccounter}{1}{\value{sccounter}<\stringLength}{%
        \StrChar{#1}{\value{sccounter}}[\currentLetter]%
        %
        \IfEqCase*{\currentLetter}{%
          % The lines below are the rules. Obviously more could be added.
          {a}{{\uppercase{\relscale{0.75}a}}}%
          {b}{{\uppercase{\relscale{0.75}b}}}%
          {c}{{\uppercase{\relscale{0.75}c}}}%
          {d}{{\uppercase{\relscale{0.75}d}}}%
          {e}{{\uppercase{\relscale{0.75}e}}}%
          {f}{{\uppercase{\relscale{0.75}f}}}%
          {g}{{\uppercase{\relscale{0.75}g}}}%
          {h}{{\uppercase{\relscale{0.75}h}}}%
          {i}{{\uppercase{\relscale{0.75}i}}}%
          {j}{{\uppercase{\relscale{0.75}j}}}%
          {k}{{\uppercase{\relscale{0.75}k}}}%
          {l}{{\uppercase{\relscale{0.75}l}}}%
          {m}{{\uppercase{\relscale{0.75}m}}}%
          {n}{{\uppercase{\relscale{0.75}n}}}%
          {o}{{\uppercase{\relscale{0.75}o}}}%
          {p}{{\uppercase{\relscale{0.75}p}}}%
          {q}{{\uppercase{\relscale{0.75}q}}}%
          {r}{{\uppercase{\relscale{0.75}r}}}%
          {s}{{\uppercase{\relscale{0.75}s}}}%
          {t}{{\uppercase{\relscale{0.75}t}}}%
          {u}{{\uppercase{\relscale{0.75}u}}}%
          {v}{{\uppercase{\relscale{0.75}v}}}%
          {w}{{\uppercase{\relscale{0.75}w}}}%
          {x}{{\uppercase{\relscale{0.75}x}}}%
          {y}{{\uppercase{\relscale{0.75}y}}}%
          {z}{{\uppercase{\relscale{0.75}z}}}%
          {å}{{\uppercase{\relscale{0.75}å}}}%
          {ä}{{\uppercase{\relscale{0.75}ä}}}%
          {ö}{{\uppercase{\relscale{0.75}ö}}}%
          {ü}{{\uppercase{\relscale{0.75}ü}}}%
        }%
        % if our \currentLetter isn’t any of the letters we have rules for,
        % then just output it now
        [{\currentLetter}]%
    }%
}%