    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.io.filefilter;
    019
    020import java.io.File;
    021import java.nio.file.FileVisitResult;
    022import java.nio.file.Path;
    023import java.nio.file.attribute.BasicFileAttributes;
    024import java.util.Objects;
    025
    026/**
    027 * Accepts only an exact {@link File} object match. You can use this filter to visit the start directory when walking a
    028 * file tree with
    029 * {@link java.nio.file.Files#walkFileTree(java.nio.file.Path, java.util.Set, int, java.nio.file.FileVisitor)}.
    030 *
    031 * @since 2.9.0
    032 */
    033public class FileEqualsFileFilter extends AbstractFileFilter {
    034
    035    private final File file;
    036    private final Path path;
    037
    038    /**
    039     * Constructs a new instance for the given {@link File}.
    040     *
    041     * @param file The file to match.
    042     */
    043    public FileEqualsFileFilter(final File file) {
    044        this.file = Objects.requireNonNull(file, "file");
    045        this.path = file.toPath();
    046    }
    047
    048    @Override
    049    public boolean accept(final File file) {
    050        return Objects.equals(this.file, file);
    051    }
    052
    053    @Override
    054    public FileVisitResult accept(final Path path, final BasicFileAttributes attributes) {
    055        return toFileVisitResult(Objects.equals(this.path, path), path);
    056    }
    057}