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% ff-mac.tex -- support for font files
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Petr Olsak 2016
% This file is part of csplain package.
% See the file cs-heros.tex for more details.
\def\ffdecl [#1]#2#3#4#5#6{\ffdecltest#6 {}
\iftrue
\def\fffam{#1}%
{\toks2={#2}\toks3={#3}\toks4={#4}%
\immediate\write16{FONT: #1 - {\the\toks2} {\the\toks3}%
\ifx\relax#4\relax\else \space \the\toks4 \fi
\ifx\loadmathfonts\relax \else \space +#5\fi}}%
\else
\ffmessage {WARNING: #1 family is not available in
\fotenc\space encoding. Ignored.}%
\endinput
\fi
}
\def\ffdecltest#1 {\ifx\relax#1\relax \expandafter \ffdecltestfin
\else
\ismacro\fotenc{#1}\iftrue \ffdecltestfound \fi
\expandafter\ffdecltest
\fi
}
\def\ffdecltestfin\iftrue{\iffalse}
\def\ffdecltestfound#1\iftrue{\fi\fi \iftrue}
\ifx\ffmessage\undefined \def\ffmessage{\immediate\write16 }\fi
\ifx\sizespec\undefined \def\sizespec{}\fi
\ifx\fotenc\undefined
\ifx\chyph\undefined \def\fotenc{8t}\else \def\fotenc{8z}\fi
\ifx\font\corkencoded \def\fotenc{8t}\fi
\ifx\font\unicoded \def\fotenc{U}\fi
\def\tmp#1#2\relax{\def\tmp{#2}}\tmp ^^^^abcd\relax
\ifx\tmp\empty \def\fotenc{U}\fi % Unicode engine
\fi
\ifx\protected\undefined
\let\tryprotected=\relax
\ifx\addprotect\undefined \else
\def\tryprotected#1#2{\addprotect#2#1#2}
\fi
\else \let\tryprotected=\protected \fi
\ifx\rfontskipat\undefined \input csfontsm \fi
\tryprotected\def\ffvars#1#2#3#4{%
\def\ffvarY##1{\ifcase##1 #1\or#2\or#3\or#4\fi}%
}
\tryprotected\def\ffsetV#1#2{\expandafter\def\csname #1V\endcsname{#2}}
\def\ffvarZ#1{\ifcase#1 \string\rm\or\string\bf\or\string\it\or\string\bi\fi}
\long\def\ffsetX#1{\ifx#1\fam \ffsetY=\else \ifx#1\one \ffsetY+\else
\ifx#1\rm \ffsetY0\else \ifx#1\bf \ffsetY1\else
\ifx#1\it \ffsetY2\else \ifx#1\bi \ffsetY3\else
\ffsetZ#1\fi\fi\fi\fi\fi\fi
}
\long\def\ffsetZ#1\fi\fi\fi\fi\fi\fi{\fi\fi\fi\fi\fi\fi#1}
\ifx\one\undefined \def\one{{}}\fi % Something more specific than \undefined.
% User can re-define it without problems.
\tryprotected\def\ffsetY#1{%
\ifx=#1\ffsetS % save current variant
\ifx\ffnamegen\undefined % \ffsetX\fam can be used for resizing only
\resizefont\tenrm \resizefont\tenbf \resizefont\tenit \resizefont\tenbi
\else \ffsetW0\tenrm \ffsetW1\tenbf \ffsetW2\tenit \ffsetW3\tenbi \fi
\ffsetT{\tenrm}{\tenbf}{\tenit}{\tenbi}% return to current variant
\else \ifx+#1\ffsetS \ffsetT{\ffsetX\rm}{\ffsetX\bf}{\ffsetX\it}{\ffsetX\bi}%
\else \edef\ffvarV{\ffvarY{#1}}\ffsetR{#1}%
\if!\ffvarV\relax\ffwarning{\ffvarZ{#1}}%
\else \def\ffvarN{#1}\ffsetF\ffmodfont\ffmodfont
\fi\fi\fi
}
\def\ffsetF#1#2{%
\ffloadhookA\iftrue
\ifx\dgsize\undefined
\expandafter\readsizespec\sizespec at\relax
\ffloadhookB \font#1=\whichtfm{\ffnamegen} \sizespec\relax
\let\dgsize=\undefined
\else \ffloadhookB \font#1=\whichtfm{\ffnamegen} \sizespec\relax
\fi #2\fi
}
\def\ffloadhookA{}
\def\ffloadhookB{}
\def\ffwarning#1{}
\def\ffsetR#1{} % reserved for special usage
\def\ffsetS{\expandafter\ifx\the\font\tenrm \def\ffvarN{0}%
\else \expandafter\ifx\the\font\tenbf \def\ffvarN{1}%
\else \expandafter\ifx\the\font\tenit \def\ffvarN{2}%
\else \expandafter\ifx\the\font\tenbi \def\ffvarN{3}\fi\fi\fi\fi
}
\def\ffsetT#1#2#3#4{\ifx\ffvarN\undefined \else
\ifcase\ffvarN\space #1\or#2\or#3\or#4\fi\fi
}
\def\readsizespec#1at#2\relax{\ifx!#2\def\dgsize{#1}\else
\ifx\relax#2\relax \def\dgsize{10pt}\else \readsizespec#2!\relax\fi\fi
}
\def\ffsetW#1#2{\edef\ffvarV{\ffvarY{#1}}\ffsetR{#1}%
\if!\ffvarV\relax\ffwarning{\ffvarZ{#1}}\else \ffsetF#2\relax\fi
}
\def\ismacro#1#2#3{\def\tmp{#2}\ifx#1\tmp}
\def\ffletfont#1=#2#3{%
{\def\sizespec{#3}\let\ffsetFa=\ffsetF
\def\ffsetF##1##2{\ffsetFa#1\relax}\def\ffsetW##1##2{}%
\ffsetX#2\global\let\tmp=#1}\let#1=\tmp
}
\ifx\regtfm\undefined %%%%% \regtfm, \whichtfm from ams-math.tex:
\def\regtfm #1 0 #2 *{\expandafter
\def\csname#1:reg\endcsname{#2 16380 \relax}%
\def\tmpa{#1}\reversetfm #2 * %
}
\def\reversetfm #1 #2 {\expandafter
\let\csname#1:reg\expandafter\endcsname
\csname\tmpa:reg\endcsname
\if*#2\else \expandafter\reversetfm \fi
}
\def\whichtfm #1{\ifx\dgsize\undefined #1\else
\expandafter \ifx\csname#1:reg\endcsname\relax
#1%
\else
\expandafter\expandafter\expandafter \dowhichtfm
\csname #1:reg\expandafter\endcsname
\fi \fi
}
\def\dowhichtfm #1 #2 {%
\ifdim\dgsize<#2pt #1\expandafter\ignoretfm\else \expandafter\dowhichtfm
\fi
}
\def\ignoretfm #1\relax{}
\fi % of \ifx\regtfm %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\ffalias#1#2{\expandafter
\def\csname#1:reg\endcsname{\whichtfm{#2} 16380 \relax}%
}
\def\ffoptV{}
\def\regsizes#1#2{\bgroup \aftergroup\regsizesC #1\relax
\let\regtfm=\relax \gdef\tmp{}%
\ifx\ffnameotfB\undefined \def\ffnameotf##1{##1}\else \let\ffnameotf=\relax \fi
\edef\ffvarV{\ffvarY{0}}\ffsetR{0}\if!\ffvarV\else \regsizesA{#2}\fi
\edef\ffvarV{\ffvarY{1}}\ffsetR{1}\if!\ffvarV\else \regsizesA{#2}\fi
\edef\ffvarV{\ffvarY{2}}\ffsetR{2}\if!\ffvarV\else \regsizesA{#2}\fi
\edef\ffvarV{\ffvarY{3}}\ffsetR{3}\if!\ffvarV\else \regsizesA{#2}\fi
\egroup
}
\def\regsizesA#1{\def\ffoptV{}\xdef\tmp{\tmp\regtfm \ffnamegen}%
\regsizesB#1 * =
}
\def\regsizesB#1 =#2 {\if*#1\xdef\tmp{\tmp\space*}%
\else \def\ffoptV{#2}\xdef\tmp{\tmp\space #1 \ffnameotf{\ffnamegen}}%
\expandafter\regsizesB\fi
}
\def\regsizesC{\let\ffnameotf=\ffnameotfA \tmp\xdef\tmp{}\let\ffnameotf=\ffnameotfB}
\def\useff#1{} % do nothing with non U encoding
\ismacro\fotenc{U}\iftrue\else \ismacro\fotenc{sU}\iftrue\else \endinput \fi\fi %%%%%%
\ifx\directlua\undefined \else \ifx\luafonts\undefined \input luafonts
\fi\fi % lua code to re-define \font primitive
\ifx\fontfeatures\undefined
\def\fontfeatures{mapping=tex-text;script=latn;+tlig} % default
\fi
\def\useff#1{\ffsetU{#1}\ffsetX}
\tryprotected\def\ffsetU#1{\edef\fontfeatures{\fontfeatures;#1}}
\def\ffnameotfA#1{ff:no}
\def\ffnameotfB#1{"#1:\fontfeatures"}
\def\resizeall{\ffsetX\fam \resizefont\tentt}
\endinput
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