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    package org.apache.logging.log4j.core.util;
018    
019    /**
020     * Boolean helpers.
021     */
022    public final class Booleans {
023    
024        private Booleans() {
025        }
026    
027        /**
028         * Returns {@code true} if {@code s} is {@code "true"} (case-insensitive), {@code false} if {@code s} is
029         * {@code "false"} (case-insensitive), and {@code defaultValue} if {@code s} is anything else (including null or
030         * empty).
031         *
032         * @param s The {@code String} to parse into a {@code boolean}
033         * @param defaultValue The default value to use if {@code s} is neither {@code "true"} nor {@code "false"}
034         * @return the {@code boolean} value represented by the argument, or {@code defaultValue}.
035         */
036        public static boolean parseBoolean(final String s, final boolean defaultValue) {
037            return "true".equalsIgnoreCase(s) || (defaultValue && !"false".equalsIgnoreCase(s));
038        }
039    
040    }