#!/bin/sh -eu
in=$1 out=$2 page0=${3:-} page1=${4:-$page0}
chromium-browser --headless --disable-gpu --no-sandbox --run-all-compositor-stages-before-draw --no-pdf-header-footer --print-to-pdf-no-header --print-to-pdf="$out" "$in"
GS_ARGS=
if [ -n "$page0" ]; then
        GS_ARGS="-dFirstPage=$page0 -dLastPage=$page1"
fi
gs -sDEVICE=pdfwrite -dNOPAUSE -dBATCH $GS_ARGS -sOutputFile="$2.tmp" "$2"
mv "$2.tmp" "$2"