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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements. See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache license, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License. You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the license for the specific language governing permissions and
15   * limitations under the license.
16   */
17  package org.apache.logging.log4j.core.util;
18  
19  /**
20   * Boolean helpers.
21   */
22  public final class Booleans {
23  
24      private Booleans() {
25      }
26  
27      /**
28       * Returns {@code true} if {@code s} is {@code "true"} (case-insensitive), {@code false} if {@code s} is
29       * {@code "false"} (case-insensitive), and {@code defaultValue} if {@code s} is anything else (including null or
30       * empty).
31       *
32       * @param s The {@code String} to parse into a {@code boolean}
33       * @param defaultValue The default value to use if {@code s} is neither {@code "true"} nor {@code "false"}
34       * @return the {@code boolean} value represented by the argument, or {@code defaultValue}.
35       */
36      public static boolean parseBoolean(final String s, final boolean defaultValue) {
37          return "true".equalsIgnoreCase(s) || (defaultValue && !"false".equalsIgnoreCase(s));
38      }
39  
40  }