iOS resize script

ios-resize.py

#!/usr/bin/env python3

import os
import sys
from subprocess import call

if len(sys.argv) == 1:
	print("Usage:\n  ios-resize filename @3x_size_optional_param (32x32)")
	sys.exit()

img_full_path = sys.argv[1]
img_path, img_extension = os.path.splitext(img_full_path)

multiplier_path = lambda m: img_path + "@" + m + "x" + img_extension

if len(sys.argv) < 3:
	call(["cp", img_full_path, multiplier_path('3')])
else:
	call(["convert", img_full_path, "-resize", sys.argv[2], multiplier_path('3')])

call(["convert", multiplier_path('3'), "-resize", "66%", multiplier_path('2')])
call(["convert", multiplier_path('3'), "-resize", "33%", multiplier_path('1')])