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 */
017package org.apache.logging.log4j.core.util;
018
019/**
020 * Boolean helpers.
021 */
022public 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}