chrome/browser/resources/chromeos/chromevox/tools/generate_deps.py

   1 #!/usr/bin/env python
   2
   3 # Copyright 2014 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 ''' Generates a deps.js file based on an input list of javascript files using
   8 Closure style provide/require calls.
   9 '''
  10
  11 import optparse
  12 import os
  13 import sys
  14
  15 from jsbundler import PathRewriter
  16
  17 _SCRIPT_DIR = os.path.realpath(os.path.dirname(__file__))
  18 _CHROME_SOURCE = os.path.realpath(
  19     os.path.join(_SCRIPT_DIR, *[os.path.pardir] * 6))
  20 sys.path.insert(0, os.path.join(
  21     _CHROME_SOURCE, ('chrome/third_party/chromevox/third_party/' +
  22                      'closure-library/closure/bin/build')))
  23 import source
  24
  25
  26 def main():
  27   parser = optparse.OptionParser(description=__doc__)
  28   parser.add_option('-w', '--rewrite_prefix', action='append', default=[],
  29                     dest='prefix_map', metavar='SPEC',
  30                     help=('Two path prefixes, separated by colons ' +
  31                           'specifying that a file whose (relative) path ' +
  32                           'name starts with the first prefix should have ' +
  33                           'that prefix replaced by the second prefix to ' +
  34                           'form a path relative to the output directory. ' +
  35                           'The resulting path is used in the deps mapping ' +
  36                           'file path to a list of provided and required ' +
  37                           'namespaces.'))
  38   parser.add_option('-o', '--output_file', action='store', default=[],
  39                     metavar='SPEC',
  40                     help=('Where to output the generated deps file.'))
  41   options, args = parser.parse_args()
  42
  43   path_rewriter = PathRewriter(options.prefix_map)
  44
  45   # Write the generated deps file.
  46   with open(options.output_file, 'w') as output:
  47     for path in args:
  48       js_deps = source.Source(source.GetFileContents(path))
  49       path = path_rewriter.RewritePath(path)
  50       line = 'goog.addDependency(\'%s\', %s, %s);\n' % (
  51           path, sorted(js_deps.provides), sorted(js_deps.requires))
  52       output.write(line)
  53
  54
  55 if __name__ == '__main__':
  56   main()