def main()

in src/com/facebook/buck/parser/buck.py [0:0]

• 27 lines of code
• 14 McCabe index (conditional complexity)

def main():
  parser = optparse.OptionParser()
  parser.add_option('--project_root', action='store', type='string', dest='project_root')
  parser.add_option('--include', action='append', dest='include')
  parser.add_option('--ignore_path', action='append', dest='ignore_paths')
  parser.add_option('--server', action='store_true', dest='server',
      help='Invoke as a server to parse individual BUCK files on demand.')
  (options, args) = parser.parse_args()

  # Even though project_root is absolute path, it may not be concise. For example, it might be
  # like "C:\project\.\rule". We normalize it in order to make it consistent with ignore_paths.
  project_root = os.path.abspath(options.project_root)

  build_files = []
  if args:
    # The user has specified which build files to parse.
    build_files = args
  elif not options.server:
    # Find all of the build files in the project root. Symlinks will not be traversed.
    # Search must be done top-down so that directory filtering works as desired.
    # options.ignore_paths may contain /, which is needed to be normalized in order to do string
    # pattern matching.
    ignore_paths = [os.path.abspath(os.path.join(project_root, d))
        for d in options.ignore_paths or []]
    build_files = []
    for dirpath, dirnames, filenames in symlink_aware_walk(project_root):
      # Do not walk directories that contain generated/non-source files.
      # All modifications to dirnames must occur in-place.
      dirnames[:] = [d for d in dirnames if not (os.path.join(dirpath, d) in ignore_paths)]

      if BUILD_RULES_FILE_NAME in filenames:
        build_file = os.path.join(dirpath, BUILD_RULES_FILE_NAME)
        build_files.append(build_file)

  buildFileProcessor = BuildFileProcessor(project_root, options.include or [], options.server)

  for build_file in build_files:
    buildFileProcessor.process(build_file)

  if options.server:
    # Apparently for ... in sys.stdin doesn't work with Jython when a custom stdin is
    # provided by the caller in Java-land.  Claims that sys.stdin is a filereader which doesn't
    # offer an iterator.
    for build_file in iter(sys.stdin.readline, ''):
      buildFileProcessor.process(build_file.rstrip())