001// --- BEGIN LICENSE BLOCK ---
002/*
003 * Copyright (c) 2009, Mikio L. Braun
004 * All rights reserved.
005 *
006 * Redistribution and use in source and binary forms, with or without
007 * modification, are permitted provided that the following conditions are
008 * met:
009 *
010 *     * Redistributions of source code must retain the above copyright
011 *       notice, this list of conditions and the following disclaimer.
012 *
013 *     * Redistributions in binary form must reproduce the above
014 *       copyright notice, this list of conditions and the following
015 *       disclaimer in the documentation and/or other materials provided
016 *       with the distribution.
017 *
018 *     * Neither the name of the Technische Universität Berlin nor the
019 *       names of its contributors may be used to endorse or promote
020 *       products derived from this software without specific prior
021 *       written permission.
022 *
023 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
024 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
025 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
026 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
027 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
028 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
029 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
030 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
031 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
032 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
033 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
034 */
035// --- END LICENSE BLOCK ---
036
037package org.jblas.util;
038
039/**
040 *
041 */
042public class Logger {
043    public static final int ERROR = 5;
044    public static final int WARNING = 4;
045    public static final int INFO = 3;
046    public static final int CONFIG = 2;
047    public static final int DEBUG = 1;
048
049    public static final String levelNames[] = {
050        "DEBUG", "CONFIG", "INFO", "WARNING", "ERROR"
051    };
052
053    private static Logger theLogger = new Logger();
054    private int level;
055
056    private Logger() {
057        level = INFO;
058    }
059
060    public static Logger getLogger() {
061        return theLogger;
062    }
063
064    public void log(int messageLevel, String msg) {
065        if (level <= messageLevel) {
066            System.err.println("-- org.jblas " + levelNames[messageLevel - 1] + " "+ msg);
067        }
068    }
069
070    public void debug(String msg) {
071        log(DEBUG, msg);
072    }
073
074    public void config(String msg) {
075        log(CONFIG, msg);
076    }
077
078    public void info(String msg) {
079        log(INFO, msg);
080    }
081
082    public void warning(String msg) {
083        log(WARNING, msg);
084    }
085
086    public void error(String msg) {
087        log(ERROR, msg);
088    }
089
090    public void setLevel(int level) {
091        this.level = level;
092    }
093}