Insert accessibility to storyboard

insert_accessibility.py

# -*- coding: utf-8 -*-
import optparse
import xml.etree.ElementTree as ET

targets = ['button', 'label', 'textField']

def main(storyboard):
    tree = ET.parse(storyboard)
    for target in targets:
        for element in tree.getroot().iter(target):
            elid = element.get('id')
            accs = ET.SubElement(element, 'accessibility')
            accs.set('key', 'accessibilityConfiguration')
            accs.set('identifier', elid)

    tree.write('new_%s' % storyboard)

if __name__ == '__main__':
    usage = "Usage: %prog storyboard"
    parser = optparse.OptionParser(usage)
    (options, args) = parser.parse_args()
    if not args:
        parser.error("required storyboard")
        parser.print_help()
        exit(1)
    main(args[0])