LessPaths.java

/*
 * 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.
 */
package com.addthis.basis.util;

import java.io.IOException;

import java.nio.file.FileVisitResult;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;

public class LessPaths {

    private static DeleteFile VISITOR = new DeleteFile();

    private static class DeleteFile extends SimpleFileVisitor<Path> {

        @Override
        public FileVisitResult visitFile(Path file, BasicFileAttributes attrs)
                throws IOException {
            Files.delete(file);
            return FileVisitResult.CONTINUE;
        }

        @Override
        public FileVisitResult postVisitDirectory(Path dir, IOException exc)
                throws IOException {
            if (exc != null) {
                throw exc;
            } else {
                Files.delete(dir);
            }
            return FileVisitResult.CONTINUE;
        }
    }

    /**
     * Deletes this path and recursively delete all children.
     *
     * @param parent
     * @throws IOException
     */
    public static void recursiveDelete(Path parent) throws IOException {
        Files.walkFileTree(parent, VISITOR);
    }

}