private static void deleteOrMoveRecursively()

in sources/java-incremental-compilation/jvm-inc-builder/src/com/intellij/tools/build/bazel/jvmIncBuilder/StorageManager.java [326:362]

33 lines of code
10 McCabe index (conditional complexity)


  private static void deleteOrMoveRecursively(Path dataDir, Path trashDir) throws IOException {
    if (Files.notExists(dataDir)) {
      return;
    }

    Files.walkFileTree(dataDir, new SimpleFileVisitor<>() {
      @Override
      public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
        if (!Utils.deleteIfExists(file) && !file.startsWith(trashDir) && Files.exists(file, LinkOption.NOFOLLOW_LINKS)) {
          Files.createDirectories(trashDir);
          Path tempFile = Files.createTempFile(trashDir, null, null);
          Files.move(file, tempFile, StandardCopyOption.REPLACE_EXISTING, StandardCopyOption.ATOMIC_MOVE);
        }
        return FileVisitResult.CONTINUE;
      }

      @Override
      public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
        if (exc != null) {
          throw exc;
        }

        try {
          Utils.deleteIfExists(dir);
        }
        catch (DirectoryNotEmptyException e) {
          if (dir.equals(trashDir) || (Files.exists(trashDir) && dir.equals(dataDir))) {
            // ignore
          }
          else {
            throw e;
          }
        }
        return FileVisitResult.CONTINUE;
      }
    });
  }