org.mycore.datamodel.niofs.utils.MCRRecursiveDeleter Maven / Gradle / Ivy
/*
* This file is part of *** M y C o R e ***
* See http://www.mycore.de/ for details.
*
* MyCoRe is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* MyCoRe is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MyCoRe. If not, see .
*/
package org.mycore.datamodel.niofs.utils;
import java.io.IOException;
import java.nio.file.FileVisitResult;
import java.nio.file.FileVisitor;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.SimpleFileVisitor;
import java.nio.file.attribute.BasicFileAttributes;
/**
* A {@link FileVisitor} to delete a directory recursivly
*
* Files.walkFileTree(rootPath, MCRRecursiveDeleter.instance())
*
* @author Thomas Scheffler (yagee)
*
*/
public final class MCRRecursiveDeleter extends SimpleFileVisitor {
private static final MCRRecursiveDeleter INSTANCE = new MCRRecursiveDeleter();
private MCRRecursiveDeleter() {
}
public static MCRRecursiveDeleter instance() {
return INSTANCE;
}
@Override
public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
Files.delete(file);
return super.visitFile(file, attrs);
}
@Override
public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
if (exc != null) {
throw exc;
}
if (dir.getNameCount() > 0) {
Files.delete(dir);
}
return super.postVisitDirectory(dir, exc);
}
}