Convert ios style assets to android style

convert.sh

#/bin/bash
mkdir -p "drawable-mdpi"
mkdir -p "drawable-hdpi"
mkdir -p "drawable-xhdpi"
mkdir -p "drawable-xxhdpi"
mkdir -p "drawable-xxxhdpi"

files="*.png"
regex="([^@])*@([0-9.]*)x\.png"
for f in $files
do
    if [[ $f =~ $regex  ]]
    then
        name="${BASH_REMATCH[1]}"
        size="${BASH_REMATCH[2]}"
        case $size in
        1)
            mv $f "drawable-mdpi/${name}.png"
            ;;
        1.5)
            mv $f "drawable-hdpi/${name}.png"
            ;;
        2)
            mv $f "drawable-xhdpi/${name}.png"
            ;;
        3)
            mv $f "drawable-xxhdpi/${name}.png"
            ;;
        4)
            mv $f "drawable-xxxhdpi/${name}.png"
            ;;
        esac
    else
        echo "$f doesn't match" >&2 # this could get noisy if there are a lot of non-matching files
    fi
done