public static void verifyDirectoryCreatable()

in appengine-plugins-core/src/main/java/com/google/cloud/tools/io/FilePermissions.java [42:62]

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

  public static void verifyDirectoryCreatable(Path path)
      throws AccessDeniedException, NotDirectoryException {

    Preconditions.checkNotNull(path, "Null directory path");
    for (Path segment = path; segment != null; segment = segment.getParent()) {
      if (Files.exists(segment)) {
        if (Files.isDirectory(segment)) {
          // Can't create a directory if the bottom most currently existing directory in
          // the path is not writable.
          if (!Files.isWritable(segment)) {
            throw new AccessDeniedException(segment + " is not writable");
          }
        } else {
          // Can't create a directory if a non-directory file already exists with that name
          // somewhere in the path.
          throw new NotDirectoryException(segment + " is a file");
        }
        break;
      }
    }
  }