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 018package org.apache.log4j.pattern; 019 020import org.apache.log4j.Level; 021import org.apache.log4j.spi.LoggingEvent; 022 023 024/** 025 * Return the event's level in a StringBuffer. 026 * 027 * @author Ceki Gülcü 028 */ 029public final class LevelPatternConverter extends LoggingEventPatternConverter { 030 031 /** 032 * Integer severity for Level.TRACE. 033 */ 034 private static final int TRACE_INT = 5000; 035 /** 036 * Singleton. 037 */ 038 private static final LevelPatternConverter INSTANCE = 039 new LevelPatternConverter(); 040 041 /** 042 * Private constructor. 043 */ 044 private LevelPatternConverter() { 045 super("Level", "level"); 046 } 047 048 /** 049 * Obtains an instance of pattern converter. 050 * @param options options, may be null. 051 * @return instance of pattern converter. 052 */ 053 public static LevelPatternConverter newInstance( 054 final String[] options) { 055 return INSTANCE; 056 } 057 058 /** 059 * {@inheritDoc} 060 */ 061 public void format(final LoggingEvent event, final StringBuffer output) { 062 output.append(event.getLevel().toString()); 063 } 064 065 /** 066 * {@inheritDoc} 067 */ 068 public String getStyleClass(Object e) { 069 if (e instanceof LoggingEvent) { 070 int lint = ((LoggingEvent) e).getLevel().toInt(); 071 072 switch (lint) { 073 case TRACE_INT: 074 return "level trace"; 075 076 case Level.DEBUG_INT: 077 return "level debug"; 078 079 case Level.INFO_INT: 080 return "level info"; 081 082 case Level.WARN_INT: 083 return "level warn"; 084 085 case Level.ERROR_INT: 086 return "level error"; 087 088 case Level.FATAL_INT: 089 return "level fatal"; 090 091 default: 092 return "level " + ((LoggingEvent) e).getLevel().toString(); 093 } 094 } 095 096 return "level"; 097 } 098}