closure_js_api.py

import httplib
import urllib


def closure_js_api(_in, out, **kwargs):
    # https://developers.google.com/closure/compiler/docs/api-tutorial1

    # Define the parameters for the POST request and encode them in a
    # URL-safe format.
    params = urllib.urlencode([
        ('js_code', _in.read().encode('utf-8')),
        ('compilation_level', 'SIMPLE_OPTIMIZATIONS'),
        ('output_format', 'text'),
        ('output_info', 'compiled_code'),
    ])

    # Always use the following value for the Content-type header.
    headers = {'Content-type': 'application/x-www-form-urlencoded'}
    conn = httplib.HTTPConnection('closure-compiler.appspot.com')
    conn.request('POST', '/compile', params, headers)
    response = conn.getresponse()
    data = response.read()
    out.write(data)

    conn.close()