content: package com.japisoft.xflows.task;
  
  import java.io.BufferedReader;
  import java.io.File;
  import java.io.FileReader;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collections;
  
  import com.japisoft.framework.toolkit.LoggerListener;
  
  /**
  This program is available under two licenses : 
  
  1. For non commercial usage : 
  
  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  2. For commercial usage :
  
  You need to get a commercial license for source usage at : 
  
  http://www.editix.com/buy.html
  
  Copyright (c) 2018 Alexandre Brillant - JAPISOFT SARL - http://www.japisoft.com
  
  @author Alexandre Brillant - abrillant@japisoft.com
  @author JAPISOFT SARL - http://www.japisoft.com
  
  */
  public class LoggerListenerFileProducer {
  
  	public LoggerListenerFileProducer( File logFile, LoggerListener listener ) {
  		try {
  			BufferedReader reader = new BufferedReader( new FileReader( logFile ) );
  			try {
  				String line = null;
  				
  				// Read at reverse
  				ArrayList l = new ArrayList();
  				while ( ( line = reader.readLine() ) != null ) {
  					l.add( line );
  				}
  				
  				Collections.reverse( l );
  
  				for ( int i = 0; i < l.size(); i++ ) {
  					line = ( String )l.get( i );
  					if ( line.startsWith( "**" ) ) {
  						listener.addError( line.substring( 2 ) );
  					} else
  					if ( line.startsWith( "*" ) ) {
  						listener.addWarning( line.substring( 1 ) );
  					} else {
  						listener.addInfo( line );
  					}
  				}
  			} finally {
  				reader.close();
  			}
  		} catch( IOException exc ) {
  			listener.addError( exc.getMessage() );
  		}
  	}
  
  }
  