Method listFilesRecursively

src/main/java/gate/util/Files.java:667–683

Same as java.io.File#listFiles(java.io.FileFilter) but recursive on directories. @param directory file path to start the search, will not be include in the results @param filter filter apply to the search @return an array of files (including directories) contained inside directory<

(File directory, FileFilter filter)

   *   directory, or if an I/O error occurs.
   */
  public static File[] listFilesRecursively(File directory, FileFilter filter) {
    List<File> filesList = new ArrayList<File>();

    File[] filesRootArray = directory.listFiles(filter);
    if (filesRootArray == null) { return null; }

    for (File file : filesRootArray) {
      filesList.add(file);
      if (file.isDirectory()) {
        File[] filesDeepArray = listFilesRecursively(file, filter);
        if (filesDeepArray == null) { return null; }
        filesList.addAll(Arrays.asList(filesDeepArray));
      }
    }

    return filesList.toArray(new File[filesList.size()]);
  }

} // class Files