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
18 package org.apache.log4j.pattern;
19
20 import org.apache.log4j.Level;
21 import org.apache.log4j.spi.LoggingEvent;
22
23
24 /**
25 * Return the event's level in a StringBuffer.
26 *
27 * @author Ceki Gülcü
28 */
29 public final class LevelPatternConverter extends LoggingEventPatternConverter {
30
31 /**
32 * Integer severity for Level.TRACE.
33 */
34 private static final int TRACE_INT = 5000;
35 /**
36 * Singleton.
37 */
38 private static final LevelPatternConverter INSTANCE =
39 new LevelPatternConverter();
40
41 /**
42 * Private constructor.
43 */
44 private LevelPatternConverter() {
45 super("Level", "level");
46 }
47
48 /**
49 * Obtains an instance of pattern converter.
50 * @param options options, may be null.
51 * @return instance of pattern converter.
52 */
53 public static LevelPatternConverter newInstance(
54 final String[] options) {
55 return INSTANCE;
56 }
57
58 /**
59 * {@inheritDoc}
60 */
61 public void format(final LoggingEvent event, final StringBuffer output) {
62 output.append(event.getLevel().toString());
63 }
64
65 /**
66 * {@inheritDoc}
67 */
68 public String getStyleClass(Object e) {
69 if (e instanceof LoggingEvent) {
70 int lint = ((LoggingEvent) e).getLevel().toInt();
71
72 switch (lint) {
73 case TRACE_INT:
74 return "level trace";
75
76 case Level.DEBUG_INT:
77 return "level debug";
78
79 case Level.INFO_INT:
80 return "level info";
81
82 case Level.WARN_INT:
83 return "level warn";
84
85 case Level.ERROR_INT:
86 return "level error";
87
88 case Level.FATAL_INT:
89 return "level fatal";
90
91 default:
92 return "level " + ((LoggingEvent) e).getLevel().toString();
93 }
94 }
95
96 return "level";
97 }
98 }