import os
from cElementTree import ElementTree as ET

jsb = ET(file="ext.jsb")
root = jsb.getroot()
output_dir = '..'
for package in root.findall("target"):
    output = package.attrib['file'].replace('$output', output_dir).replace('\\', '/')
    print "Creating", output
    dirname = os.path.dirname(output)
    if not os.path.exists(dirname): os.makedirs(dirname)
    files = [file.attrib['name'] for file in package.findall("include")]
    filecontents = [open(file.replace('\\', '/')).read() for file in files]
    all = '\n'.join(filecontents)
    open(output, 'w').write(all)