79 lines
2.5 KiB
Java
79 lines
2.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.commons.io.filefilter;
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import java.io.File;
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import java.io.Serializable;
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/**
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* This filter produces a logical NOT of the filters specified.
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*
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* @since Commons IO 1.0
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* @version $Revision: 591058 $ $Date: 2007-11-01 15:47:05 +0000 (Thu, 01 Nov 2007) $
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*
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* @author Stephen Colebourne
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*/
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public class NotFileFilter extends AbstractFileFilter implements Serializable {
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/** The filter */
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private final IOFileFilter filter;
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/**
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* Constructs a new file filter that NOTs the result of another filters.
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*
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* @param filter the filter, must not be null
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* @throws IllegalArgumentException if the filter is null
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*/
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public NotFileFilter(IOFileFilter filter) {
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if (filter == null) {
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throw new IllegalArgumentException("The filter must not be null");
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}
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this.filter = filter;
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}
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/**
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* Checks to see if both filters are true.
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*
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* @param file the File to check
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* @return true if the filter returns false
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*/
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public boolean accept(File file) {
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return ! filter.accept(file);
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}
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/**
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* Checks to see if both filters are true.
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*
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* @param file the File directory
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* @param name the filename
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* @return true if the filter returns false
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*/
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public boolean accept(File file, String name) {
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return ! filter.accept(file, name);
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}
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/**
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* Provide a String representaion of this file filter.
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*
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* @return a String representaion
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*/
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public String toString() {
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return super.toString() + "(" + filter.toString() + ")";
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}
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}
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