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#!/bin/bash
# This file is in the public domain.
# Convert local SVGs to the PNGs for display.
# Please make sure you have the relevant fonts installed - in the case of the builtin SVGs, these are the following:
# All:
# - Roboto (Arch: `ttf-roboto`)
# ADs:
# - Inter (Arch: `inter-font`)
# - Source Sans Pro (Arch: `adobe-source-sans-fonts`)
# Err:
# - JetBrains Mono (Arch: `ttf-jetbrains-mono`)
set -eu
# General Config
echo "${CONVERSION_TOOL:=inkscape}" &> /dev/null; # Which conversion tool to use - "im" (imagemagick), "gm" (graphicsmagick, can produce weird font results) and "inkscape"
echo "${TARGET_RESOLUTION:="768x576"}" &> /dev/null; # The final output resolution
echo "${MULTITHREAD:=0}" &> /dev/null; # Whether to parallelize it or not - can cause issues with inkscape somehow, idk
echo "${MULTITHREAD_COUNT:=0}" &> /dev/null; # How many instances to run before waiting again, if MULTITHREAD is non-falsey
# Imagemagick/Graphicsmagick Options
echo "${IM_SCALE_RESOLUTION:="1536x1152"}" &> /dev/null; # The resolution we set when telling magick to parse the SVG - higher than TARGET_RESOLUTION due to some blurry imagery caused by imagemagick otherwise.
# Convert a specific image
convertSvgToPng() {
case "$CONVERSION_TOOL" in
"im")
magick convert -density "$TARGET_RESOLUTION" "$1" -resize "$TARGET_RESOLUTION" "$2";
;;
"gm")
gm convert -density "$TARGET_RESOLUTION" "$1" -resize "$TARGET_RESOLUTION" "$2";
;;
"inkscape")
inkscape -w "$width" -h "$height" "$1" --export-png-color-mode=RGB_8 -o "$2" 2>&1 | grep -v -E 'data:font/|font-(family|style|weight|display)|unicode-range|end_font_face_cb: font face rule limited support' | sed '/^$/d'
;;
*)
echo "FATAL: Invalid tool \"$CONVERSION_TOOL\"" 1>&2
;;
esac;
}
# Setup Size Variables
if [[ "$CONVERSION_TOOL" == "inkscape" ]]; then
width=$(echo -n "$TARGET_RESOLUTION" | sed 's/x/ /' | awk '{print $1}')
height=$(echo -n "$TARGET_RESOLUTION" | sed 's/x/ /' | awk '{print $2}')
fi;
# Loop over every directory with imagesfor dir in err ads;
ctr=0;
for dir in err ads;
do
mkdir -p "${dir}/png"
# Convert them
for svg in "${dir}/svg/"*;
do
png=$(sed 's/svg/png/g' <<< "$svg");
echo "Converting $svg to $png with $CONVERSION_TOOL";
if [[ "$MULTITHREAD" != "" ]] && [[ "$MULTITHREAD" != "0" ]] && [[ "$MULTITHREAD" != "no" ]] && [[ "$MULTITHREAD" != "false" ]]; then
ctr=$((ctr + 1))
convertSvgToPng "$svg" "$png" &
if [[ $ctr -gt ${MULTITHREAD_COUNT:=4} ]]; then # Inkscape can crash completely if we run too many instances of it at once
ctr=0;
wait;
fi;
else
convertSvgToPng "$svg" "$png";
fi;
done;
wait;
done;
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