cc.recommenders.io.Logger.java Source code

Introduction

Here is the source code for cc.recommenders.io.Logger.java

Source

/**
 * Copyright (c) 2010, 2011 Darmstadt University of Technology.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     Sebastian Proksch - initial API and implementation
 */
package cc.recommenders.io;

import java.io.PrintStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.List;

import com.google.common.collect.Lists;

public class Logger {

    private static PrintStream out = System.out;
    private static boolean isCapturing = false;
    private static boolean isPrinting = false;
    private static boolean isDebugging = false;

    private static List<String> log = Lists.newLinkedList();

    // TODO add info(String msg) method

    public static void log(String rawmsg, Object... args) {
        out = System.out;
        reallyLog("\n" + getTimeStamp() + "    " + rawmsg, args);
    }

    public static void err(String rawmsg, Object... args) {
        out = System.err;
        reallyLog("\n" + getTimeStamp() + " EE " + rawmsg, args);
    }

    public static void debug(String rawmsg, Object... args) {
        out = System.out;
        if (isDebugging) {
            reallyLog("\n" + getTimeStamp() + " ~~ " + rawmsg, args);
        }
    }

    public static void append(String rawmsg, Object... args) {
        reallyLog(rawmsg, args);
    }

    private static void reallyLog(String rawmsg, Object[] args) {
        String msg = String.format(rawmsg, args);
        if (isCapturing) {
            log.add(msg);
        }
        if (isPrinting) {
            out.print(msg);
        }
    }

    private static String getTimeStamp() {
        Calendar cal = Calendar.getInstance();
        DateFormat fmt = new SimpleDateFormat("MMM d, HH:mm:ss.SSS");
        String timestamp = fmt.format(cal.getTime());
        return timestamp;
    }

    public static void setCapturing(boolean isCapturing) {
        Logger.isCapturing = isCapturing;
    }

    public static boolean isCapturing() {
        return isCapturing;
    }

    public static List<String> getCapturedLog() {
        return Lists.newLinkedList(log);
    }

    public static void reset() {
        log = Lists.newLinkedList();
        isCapturing = false;
        isPrinting = false;
        isDebugging = false;
    }

    public static void setPrinting(boolean isPrinting) {
        Logger.isPrinting = isPrinting;
    }

    public static boolean isPrinting() {
        return isPrinting;
    }

    public static void setDebugging(boolean debugging) {
        isDebugging = debugging;
    }

    public static boolean isDebugging() {
        return isDebugging;
    }

    public static void clearLog() {
        log = Lists.newLinkedList();
    }
}