root/tools/routingservice/trunk/src/jp/co/orkney/restlet/util/Log.java

package jp.co.orkney.restlet.util;

/**
 * Copyright (c) 2007 Orkney, Inc. <http://www.orkney.co.jp/>
 * 
 * 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/>.
 */

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.text.DateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

/**
 * <b>Log is a class which represents a log file and provides a method to write
 * in this file</b>
 * <p>
 * Log object is characterized by the following information:
 * <ul>
 * <li>The logs file's URL</li>
 * </ul>
 * </p>
 * 
 * @author Matthieu Bilbille - Orkney Inc.
 * @version 1.0
 */
public class Log
{
        private String file;
        private int mode;// 0 default mode, 1: debug mode, 2: full mode

        /**
         * Constructor Log.
         * <p>
         * Creates a new log with the specified string URL
         * </p>
         * 
         * @param file
         *            logs file's URL
         */
        public Log(String file, int mode)
        {
                this.file = file;
                this.mode = mode;
        }

        /**
         * Writes the specified string in the log file
         * 
         * @param text
         *            the string that is to be write in log file
         */
        public void write(String text, int mode)
        {
                if (this.mode >= mode)
                {
                        try
                        {
                                FileWriter fileWriter = new FileWriter(file, true);
                                BufferedWriter buffer = new BufferedWriter(fileWriter);
                                Calendar calendar = Calendar.getInstance();
                                Date now = calendar.getTime();
                                String datelog = DateFormat.getDateTimeInstance(DateFormat.SHORT, DateFormat.MEDIUM, Locale.FRANCE).format(now);
                                buffer.write("[" + datelog + "]: " + text);
                                buffer.newLine();
                                buffer.close();
                        }
                        catch (IOException e)
                        {
                                System.out.println(e.getMessage());
                        }
                }
        }

        /**
         * Writes the stack trace information of the exception
         * 
         * @param e
         *            exception
         */
        public void getStackTrace(Exception e)
        {
                for (int i = 0; i < e.getStackTrace().length; i++)
                {
                        this.write(e.getStackTrace()[i].toString(), 2);
                }
        }
}