private void copyDir()

in twill-core/src/main/java/org/apache/twill/internal/ApplicationBundler.java [304:333]

• 28 lines of code
• 7 McCabe index (conditional complexity)

  private void copyDir(File baseDir, String entryPrefix,
                       Set<String> entries, JarOutputStream jarOut) throws IOException {
    LOG.trace("adding whole dir {} to bundle at '{}'", baseDir, entryPrefix);
    URI baseUri = baseDir.toURI();
    Queue<File> queue = Lists.newLinkedList();
    queue.add(baseDir);
    while (!queue.isEmpty()) {
      File file = queue.remove();

      String entry = entryPrefix + baseUri.relativize(file.toURI()).getPath();
      if (entries.add(entry)) {
        jarOut.putNextEntry(new JarEntry(entry));
        if (file.isFile()) {
          try {
            Files.copy(file, jarOut);
          } catch (IOException e) {
            throw new IOException("failure copying from " + file.getAbsoluteFile() + " to JAR file entry " + entry, e);
          }
        }
        jarOut.closeEntry();
      }

      if (file.isDirectory()) {
        File[] files = file.listFiles();
        if (files != null) {
          Collections.addAll(queue, files);
        }
      }
    }
  }