Flutter application logo creation

flutter-logos.sh

#!/bin/bash

# Flutter application logo images location!
# WIN : FLUTTER_APP_ROOT\android\app\src\main\res
# LINUX : FLUTTER_APP_ROOT/android/app/src/main/res

function explode {
	FULL="$1"
	F_PATH=${FULL%/*}
	F_BASE=${FULL##*/}
	F_NAME=${F_BASE%.*}
	F_EXT=${F_BASE##*.}
	# echo "fpath="$F_PATH
	# echo "fbase="$F_BASE
	# echo "fname="$F_NAME
	# echo "fextension="$F_EXT
	# exit
}

if [ -z $(which convert) ]; then
    echo "Install imagemagick"
    echo "sudo apt install imagemagick"
    exit
fi

if [ -z "$1" ]; then
    echo "Select a square png file!"
    exit
fi

explode $(pwd)/$1
sizes=(48 72 96 144 192)
directories=(mipmap-mdpi mipmap-hdpi mipmap-xhdpi mipmap-xxhdpi mipmap-xxxhdpi)

if [ ! -d "$F_NAME" ]; then
    mkdir "$F_NAME"
fi

for i in `seq 0 4`; do
    nthDirectory=$F_NAME/${directories[$i]}
        if [ ! -d "$nthDirectory" ]; then
            mkdir "$nthDirectory"
        fi
    nthSize=${sizes[$i]}
    convert $1 -resize "$nthSizex$nthSize" "$nthDirectory/ic_launcher.png"
    echo "$1 -> "$nthSize"x"$nthSize" -> $nthDirectory/ic_launcher.png"
done