third_party/jstemplate/compile.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2011 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 """Combines the javascript files needed by jstemplate into a single file."""
   7
   8 import httplib
   9 import urllib
  10
  11
  12 def main():
  13   srcs = ['util.js', 'jsevalcontext.js', 'jstemplate.js', 'exports.js']
  14   out = 'jstemplate_compiled.js'
  15
  16   # Wrap the output in an anonymous function to prevent poluting the global
  17   # namespace.
  18   output_wrapper = '(function(){%s})()'
  19
  20   # Define the parameters for the POST request and encode them in a URL-safe
  21   # format. See http://code.google.com/closure/compiler/docs/api-ref.html for
  22   # API reference.
  23   params = urllib.urlencode(
  24     map(lambda src: ('js_code', file(src).read()), srcs) +
  25     [
  26       ('compilation_level', 'ADVANCED_OPTIMIZATIONS'),
  27       ('output_format', 'text'),
  28       ('output_info', 'compiled_code'),
  29     ])
  30
  31   # Always use the following value for the Content-type header.
  32   headers = {'Content-type': 'application/x-www-form-urlencoded'}
  33   conn = httplib.HTTPConnection('closure-compiler.appspot.com')
  34   conn.request('POST', '/compile', params, headers)
  35   response = conn.getresponse()
  36   out_file = file(out, 'w')
  37   out_file.write(output_wrapper % response.read())
  38   out_file.close()
  39   conn.close()
  40   return 0
  41
  42
  43 if __name__ == '__main__':
  44   sys.exit(main())