Method listFilesImpl

core/src/processing/core/PApplet.java:6048–6075

(File folder, boolean recursive,
                            String[] extensions, boolean hidden,
                            boolean directories, boolean files,
                            List<File> list)

  static void listFilesImpl(File folder, boolean recursive,
                            String[] extensions, boolean hidden,
                            boolean directories, boolean files,
                            List<File> list) {
    File[] items = folder.listFiles();
    if (items != null) {
      for (File item : items) {
        String name = item.getName();
        if (!hidden && name.charAt(0) == '.') {
          continue;
        }
        if (item.isDirectory()) {
          if (recursive) {
            listFilesImpl(item, recursive, extensions, hidden, directories, files, list);
          }
          if (directories) {
            if (extensions == null || listFilesExt(item.getName(), extensions)) {
              list.add(item);
            }
          }
        } else if (files) {
          if (extensions == null || listFilesExt(item.getName(), extensions)) {
            list.add(item);
          }
        }
      }
    }
  }