covert svg to icns (with imagemagick)

svg2icns

#!/usr/bin/env bash
# ref: https://gist.github.com/zlbruce/883605a635df8d5964bab11ed75e46ad
if [ $# -ne 1 ]; then
    echo "Usage: svg2icns filename.svg"
    exit 1
fi
filename="$1"
name=${filename%.*}
dest="$name".iconset
mkdir "$dest"

# increase density to remove blur
# ref: https://stackoverflow.com/a/12690135
convert -background none -density 1200 -resize '!16x16' "$1" "$dest/icon_16x16.png"
convert -background none -density 1200 -resize '!32x32' "$1" "$dest/icon_16x16@2x.png"
convert -background none -density 1200 -resize '!64x64' "$1" "$dest/icon_32x32@2x.png"
convert -background none -density 1200 -resize '!128x128' "$1" "$dest/icon_128x128.png"
convert -background none -density 1200 -resize '!256x256' "$1" "$dest/icon_128x128@2x.png"
convert -background none -density 1200 -resize '!512x512' "$1" "$dest/icon_256x256@2x.png"
convert -background none -density 1200 -resize '!1024x1024' "$1" "$dest/icon_512x512@2x.png"

cp "$dest/icon_16x16@2x.png" "$dest/icon_32x32.png"
cp "$dest/icon_128x128@2x.png" "$dest/icon_256x256.png"
cp "$dest/icon_256x256@2x.png" "$dest/icon_512x512.png"

iconutil -c icns "$dest"
rm -r "$dest"