Java Folder Delete nio delete(Path folder, List noDeleteFiles)

Description

delete

License

Apache License

Declaration

public static void delete(Path folder, List<String> noDeleteFiles) throws IOException 

Method Source Code

//package com.java2s;
/*/*  w w w . j  av a2  s  . c  o  m*/
 * (C) Copyright 2016 Kurento (http://kurento.org/)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

import java.io.IOException;

import java.nio.file.DirectoryStream;

import java.nio.file.Files;
import java.nio.file.Path;

import java.util.Iterator;
import java.util.List;

public class Main {
    public static void delete(Path folder, List<String> noDeleteFiles) throws IOException {
        delete(folder, folder, noDeleteFiles);
    }

    public static void delete(Path basePath, Path path, List<String> noDeleteFiles) throws IOException {

        Path relativePath = basePath.relativize(path);

        if (noDeleteFiles.contains(relativePath.toString())) {
            return;
        }

        if (Files.isDirectory(path)) {

            try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(path)) {
                for (Path c : directoryStream) {
                    delete(basePath, c, noDeleteFiles);
                }
            }

            if (isEmptyDir(path)) {
                Files.delete(path);
            }
        } else {
            Files.delete(path);
        }
    }

    public static boolean isEmptyDir(Path path) throws IOException {
        try (DirectoryStream<Path> ds = Files.newDirectoryStream(path)) {
            Iterator<Path> files = ds.iterator();
            return !files.hasNext();
        }
    }
}

Related

1. deleteEmptyFolder(String... dirNames)
2. deleteFile(String folderName, String fileName)
3. deleteFolder(Path folder)
4. deleteFolder(Path path)