Logger.java

Logger.java

package ru.aengine.tgm.util;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;

/**
 * Logger class for logging data in system console or/and console.log file
 */
public class Logger{
	private static boolean			consoleLogging	= true;
	private static boolean			fileLogging		= false;
	private static BufferedWriter	consoleOut;
	private static BufferedWriter	fileOut;

	/**
	 * Logger class for logging data in system console or/and console.log file
	 */
	public Logger(){
		init();
	}

	/**
	 * Logger class for logging data in system console or/and console.log file
	 * 
	 * @param fileLog
	 *            boolean - turn on/off logging in file
	 */
	public Logger(boolean fileLog){
		fileLogging = fileLog;
		init();
	}

	/**
	 * Logger class for logging data in system console or/and console.log file
	 * 
	 * @param consoleLog
	 *            boolean - turn on/off logging in console
	 * @param fileLog
	 *            boolean - turn on/off logging in file
	 */
	public Logger(boolean consoleLog, boolean fileLog){
		consoleLogging = consoleLog;
		fileLogging = fileLog;
		init();
	}

	private void init(){
		System.setProperty("file.encoding", "cp866");

		if(consoleLogging){
			try{
				consoleOut = new BufferedWriter(new OutputStreamWriter(System.out, System.getProperty("file.encoding")));
			}catch(UnsupportedEncodingException e){
				e.printStackTrace();
			}
		}

		if(fileLogging){
			try{
				File log = new File("console.log");

				if(log.exists()) log.delete();
				log.createNewFile();

				fileOut = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(log), System.getProperty("file.encoding")));
			}catch(IOException e){
				e.printStackTrace();
			}
		}
	}

	/**
	 * Write line without new line in end
	 * 
	 * @param msg
	 *            all types of data
	 */
	public static void print(Object msg){
		if(consoleLogging) consoleWrite(msg.toString(), false);
		if(fileLogging) fileWrite(msg.toString(), false);
	}

	/**
	 * Write line with new line in end
	 * 
	 * @param msg
	 *            all types of data
	 */
	public static void println(Object msg){
		if(consoleLogging) consoleWrite(msg.toString(), true);
		if(fileLogging) fileWrite(msg.toString(), true);
	}

	/**
	 * Write empty line with new line in end
	 */
	public static void println(){
		if(consoleLogging) consoleWrite(null, true);
		if(fileLogging) fileWrite(null, true);
	}

	private static void consoleWrite(String msg, boolean ln){
		try{
			if(msg != null) consoleOut.write(msg);
			if(ln) consoleOut.newLine();
			consoleOut.flush();
		}catch(IOException e){
			e.printStackTrace();
		}
	}

	private static void fileWrite(String msg, boolean ln){
		try{
			if(msg != null) fileOut.write(msg);
			if(ln) fileOut.newLine();
			fileOut.flush();
		}catch(IOException e){
			e.printStackTrace();
		}
	}
}