template_tex/tex/const.tex

23 lines
1 KiB
TeX

% switches.
\newif\ifphoto % show photo.
\newif\ifextra % show extra content.
\newif\ifen % english language.
\newif\ifru % russian language.
\newcommand{\en}[1]{\ifen#1\fi} % print if english language.
\newcommand{\ru}[1]{\ifru#1\fi} % print if russian language.
% read env variables.
\def\envtrue{true} % true.
\def\envfalse{false} % false.
\def\enven{en} % english literal.
\def\envru{ru} % russian literal.
\def\envempty{} % empty env value.
\getenv[\envphoto]{DOCUMENT_PHOTO} % read photo shell variable.
\getenv[\envextra]{DOCUMENT_EXTRA} % read extra shell variable.
\getenv[\envlang]{DOCUMENT_LANG} % read language shell variable.
\ifdefequal{\envphoto}{\envtrue}{\phototrue}{\photofalse} % show photo.
\ifdefequal{\envextra}{\envtrue}{\extratrue}{\extrafalse} % show extra content.
\ifdefequal{\envlang}{\enven}{\entrue}{} % use english.
\ifdefequal{\envlang}{\envru}{\rutrue}{} % use russian.
\ifdefequal{\envlang}{\envempty}{\entrue}{} % use english by default.