cvs commit: jakarta-log4j/tests/src/java/org/apache/log4j MyPatternLayout.java MyPatternParser.java

ceki        02/04/25 07:15:29

  Added:       tests/src/java/org/apache/log4j MyPatternLayout.java
                        MyPatternParser.java
  Log:
  MyPatternLayout.java and MyPatternParser.java were copied from
  examples/ to tests/src/java/org/apache/log4j/ in order to remove
  the dependency on examples/.
  
  Revision  Changes    Path
  1.1                  jakarta-log4j/tests/src/java/org/apache/log4j/MyPatternLayout.java
  
  Index: MyPatternLayout.java
  ===================================================================
  /*
   * Copyright (C) The Apache Software Foundation. All rights reserved.
   *
   * This software is published under the terms of the Apache Software
   * License version 1.1, a copy of which has been included with this
   * distribution in the LICENSE.txt file.  */
  
  package org.apache.log4j;
  import org.apache.log4j.helpers.PatternParser;
  
  /**
  
    Example showing how to extend PatternLayout to recognize additional
    conversion characters.  
    
    <p>In this case MyPatternLayout recognizes %# conversion pattern. It
    outputs the value of an internal counter which is also incremented
    at each call.
  
    <p>See <a href=doc-files/MyPatternLayout.java><b>source</b></a> code
    for more details.
  
    @see MyPatternParser
    @see org.apache.log4j.PatternLayout
    @author Anders Kristensen 
  */
  public class MyPatternLayout extends PatternLayout {
    public
    MyPatternLayout() {
      this(DEFAULT_CONVERSION_PATTERN);
    }
  
    public
    MyPatternLayout(String pattern) {
      super(pattern);
    }
      
    public
    PatternParser createPatternParser(String pattern) {
      return new MyPatternParser(
        pattern == null ? DEFAULT_CONVERSION_PATTERN : pattern);
    }
    
    public
    static void main(String[] args) {
      Layout layout = new MyPatternLayout("[counter=%.10#] - %m%n");
      Category cat = Category.getInstance("some.cat");
      cat.addAppender(new ConsoleAppender(layout, ConsoleAppender.SYSTEM_OUT));
      cat.debug("Hello, log");
      cat.info("Hello again...");    
    }
  }
  
  
  
  1.1                  jakarta-log4j/tests/src/java/org/apache/log4j/MyPatternParser.java
  
  Index: MyPatternParser.java
  ===================================================================
  /*
   * Copyright (C) The Apache Software Foundation. All rights reserved.
   *
   * This software is published under the terms of the Apache Software
   * License version 1.1, a copy of which has been included with this
   * distribution in the LICENSE.txt file.  */
  
  package org.apache.log4j;
  
  import org.apache.log4j.helpers.FormattingInfo;
  import org.apache.log4j.helpers.PatternConverter;
  import org.apache.log4j.helpers.PatternParser;
  import org.apache.log4j.spi.LoggingEvent;
  
  /**
    Example showing how to extend PatternParser to recognize additional
    conversion characters.  The examples shows that minimum and maximum
    width and alignment settings apply for "extension" conversion
    characters just as they do for PatternLayout recognized characters.
    
    <p>In this case MyPatternParser recognizes %# and outputs the value
    of an internal counter which is also incremented at each call.
  
    See <a href=doc-files/MyPatternParser.java><b>source</b></a> code
     for more details.
    
    @see org.apache.log4j.examples.MyPatternLayout
    @see org.apache.log4j.helpers.PatternParser
    @see org.apache.log4j.PatternLayout
  
    @author Anders Kristensen 
  */
  public class MyPatternParser extends PatternParser {
  
    int counter = 0;
  
    public
    MyPatternParser(String pattern) {
      super(pattern);
    }
      
    public
    void finalizeConverter(char c) {
      if (c == '#') {
        addConverter(new UserDirPatternConverter(formattingInfo));
        currentLiteral.setLength(0);
      } else {
        super.finalizeConverter(c);
      }
    }
    
    private class UserDirPatternConverter extends PatternConverter {
      UserDirPatternConverter(FormattingInfo formattingInfo) {
        super(formattingInfo);
      }
  
      public
      String convert(LoggingEvent event) {
        return String.valueOf(++counter);
      }
    }  
  }