Noissue - Refactor code downloading and unpacking jsshell for better readability

utils.py

 # coding: utf-8
 
 # This Source Code is subject to the terms of the Mozilla Public License
 # version 2.0 (the "License"). You can obtain a copy of the License at
 # http://mozilla.org/MPL/2.0/.
 
 from contextlib import closing
 import os
 import platform
 from StringIO import StringIO
@@ skipping 30 matching lines @@
     shell_dir = os.path.join(baseDir, JSSHELL_DIR + "-" + build)
     if not os.path.exists(shell_dir):
         os.makedirs(shell_dir)
     if sys.platform == 'win32':
         path = os.path.join(shell_dir, 'js.exe')
     else:
         path = os.path.join(shell_dir, 'js')
 
     if os.path.exists(path):
         return path
+    
+    with closing(urllib.urlopen(JSSHELL_URL % build)) as response:
+        data = response.read()
 
-    with closing(urllib.urlopen(JSSHELL_URL % build)) as response, \
-        zipfile.ZipFile(StringIO(response.read())) as zip:
+    with zipfile.ZipFile(StringIO(data)) as zip:
         zip.extractall(shell_dir)
 
     if not os.path.exists(path):
         raise Exception('Downloaded package didn\'t contain JS shell executable')
 
     try:
         os.chmod(path, 0700)
     except:
         pass
 
     return path