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#!/bin/sh
set -e
# usage: echo "<equation>" | ./svgtex.sh <output path>
# Copyright 2019-2021 DistressNetwork° <uplink@distress.network>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
tmp=$(mktemp -p /tmp)
eqn=$(cat /dev/stdin)
printf "[ok] \teqn: %s\n" "$eqn"
echo "\\\documentclass[10pt,fleqn]{standalone}
\\\usepackage{standalone,amsmath,amssymb,xcolor}
\\\begin{document}
\\\color[HTML]{DDDDDD}" >> $tmp
printf "\\\[ %s \\\]\n" "$eqn" >> $tmp
echo "\\\end{document}" >> $tmp
# now this is where the fun begins
latex -interaction=batchmode $tmp > /dev/null
[ -f tmp.dvi ] || { printf "%s \tFATAL: tex output failed\n" "[->]" ; exit 1 ; } # make sure output exists before continuing
printf "[ok] \ttex finished typesetting\n"
dvisvgm tmp.dvi -f ttf -T S2 > /dev/null 2>&1
printf "[ok] \tconversion to svg\n"
mv tmp.svg $1 # final move to desired path
rm tmp.aux tmp.log tmp.dvi $tmp # cleanup
printf "%s \tbuild complete: %s\n" "[->]" "$1"
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