def _InstallBinaries()

in build/get_syzygy_binaries.py [0:0]

• 43 lines of code
• 5 McCabe index (conditional complexity)

def _InstallBinaries(options, deleted={}):
  """Installs Syzygy binaries. This assumes that the output directory has
  already been cleaned, as it will refuse to overwrite existing files."""
  contents = {}
  state = { 'revision': options.revision, 'contents': contents }
  archive_path = _SYZYGY_ARCHIVE_PATH % { 'revision': options.revision }
  if options.resources:
    resources = [(resource, resource, '', None)
                 for resource in options.resources]
  else:
    resources = _RESOURCES
  for (base, name, subdir, filt) in resources:
    # Create the output directory if it doesn't exist.
    fulldir = os.path.join(options.output_dir, subdir)
    if os.path.isfile(fulldir):
      raise Exception('File exists where a directory needs to be created: %s' %
                      fulldir)
    if not os.path.exists(fulldir):
      _LOGGER.debug('Creating directory: %s', fulldir)
      if not options.dry_run:
        os.makedirs(fulldir)

    # Download and read the archive.
    resource = archive_path + '/' + base
    _LOGGER.debug('Retrieving %s archive at "%s".', name, resource)
    path = _Download(resource)

    _LOGGER.debug('Unzipping %s archive.', name)
    with open(path, 'rb') as data:
      archive = zipfile.ZipFile(data)
      for entry in archive.infolist():
        if not filt or filt(entry):
          fullpath = os.path.normpath(os.path.join(fulldir, entry.filename))
          relpath = os.path.relpath(fullpath, options.output_dir)
          if os.path.exists(fullpath):
            # If in a dry-run take into account the fact that the file *would*
            # have been deleted.
            if options.dry_run and relpath in deleted:
              pass
            else:
              raise Exception('Path already exists: %s' % fullpath)

          # Extract the file and update the state dictionary.
          _LOGGER.debug('Extracting "%s".', fullpath)
          if not options.dry_run:
            archive.extract(entry.filename, fulldir)
            md5 = _Md5(fullpath)
            contents[relpath] = md5
            if sys.platform == 'cygwin':
              os.chmod(fullpath, os.stat(fullpath).st_mode | stat.S_IXUSR)

    _LOGGER.debug('Removing temporary file "%s".', path)
    os.remove(path)

  return state