Put a badge on the launcher icons for another Android build

badge.sh

#!/usr/bin/env bash

# Put given badge on launcher icons for another build
#
# @param 1 - badge overlay
# @param 2 - build name (and local directory)
badge()
{
	local BADGE=$1
	local BUILD=$2
	local F

	for F in main/res/mipmap-*/ic_launcher.png
	do
		local D="${F//main/$BUILD}"
		D=${D%/*}
		[ -d "$D" ] || mkdir -p "$D" || return $?

		convert "$F" \
			"$BADGE"\
			-geometry $(identify -format '%wx%h' "$F") \
			-composite \
			"${F//main/$BUILD}"
	done
}

if [ "$0" == "${BASH_SOURCE[0]}" ]
then
	if (( $# < 2 ))
	then
		echo "usage: ${0##*/} BADGE BUILD"
	else
		badge "$@"
	fi
fi