1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one *
3 * or more contributor license agreements. See the NOTICE file *
4 * distributed with this work for additional information *
5 * regarding copyright ownership. The ASF licenses this file *
6 * to you under the Apache License, Version 2.0 (the *
7 * "License"); you may not use this file except in compliance *
8 * with the License. You may obtain a copy of the License at *
9 * *
10 * http://www.apache.org/licenses/LICENSE-2.0 *
11 * *
12 * Unless required by applicable law or agreed to in writing, *
13 * software distributed under the License is distributed on an *
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY *
15 * KIND, either express or implied. See the License for the *
16 * specific language governing permissions and limitations *
17 * under the License. *
18 */
19 package org.apache.rat.utils;
20
21 /**
22 * A default implementation of Log that writes to System.out and System.err
23 */
24 public class DefaultLog implements Log {
25
26 /**
27 * The instance of the default log.
28 */
29 private static Log INSTANCE = new DefaultLog();
30
31 /**
32 * Retrieves teh DefaultLog instance.
33 * @return the Default log instance.
34 */
35 public static Log getInstance() {
36 return INSTANCE;
37 }
38
39 /**
40 * Sets the default log instance.
41 * If not set an instance of DefaultLog will be returned
42 * @param instance a Log to use as the defult.
43 */
44 public static void setInstance(final Log instance) {
45 INSTANCE = instance == null ? new DefaultLog() : instance;
46 }
47
48 private Level level;
49
50 private DefaultLog() {
51 level = Level.WARN;
52 }
53
54 public void setLevel(Level level) {
55 this.level = level;
56 }
57
58 public Level getLevel() {
59 return level;
60 }
61
62 @Override
63 public void log(Level level, String msg) {
64 if (this.level.ordinal() <= level.ordinal())
65 switch (level) {
66 case DEBUG:
67 case INFO:
68 case WARN:
69 System.out.format("%s: %s%n", level, msg);
70 break;
71 case ERROR:
72 System.err.format("%s: %s%n", level, msg);
73 break;
74 case OFF:
75 break;
76 default:
77 break;
78 }
79 }
80 }