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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
    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 G&uuml;lc&uuml;
    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  }