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iText, a free Java-PDF library
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/*
 * $Id: SysoLogger.java 5195 2012-06-18 14:25:30Z blowagie $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2012 1T3XT
 * BVBA Authors: Balder Van Camp, Emiel Ackermann, et al.
 *
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Affero General License version 3 as published by the
 * Free Software Foundation with the addition of the following permission added
 * to Section 15 as permitted in Section 7(a): FOR ANY PART OF THE COVERED WORK
 * IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT, 1T3XT DISCLAIMS THE WARRANTY OF NON
 * INFRINGEMENT OF THIRD PARTY RIGHTS.
 *
 * 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 Affero General License for more
 * details. You should have received a copy of the GNU Affero General License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General License.
 *
 * In accordance with Section 7(b) of the GNU Affero General License, a covered
 * work must retain the producer line in every PDF that is created or
 * manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing a
 * commercial license. Buying such a license is mandatory as soon as you develop
 * commercial activities involving the iText software without disclosing the
 * source code of your own applications. These activities include: offering paid
 * services to customers as an ASP, serving PDFs on the fly in a web
 * application, shipping iText with a closed source product.
 *
 * For more information, please contact iText Software Corp. at this address:
 * [email protected]
 */
package com.itextpdf.text.log;


/**
 * A Simple System.out logger.
 * @author redlab_be
 *
 */
public class SysoLogger implements Logger {

	private String name;
	private final int shorten;

	/**
	 * Defaults packageReduce to 1.
	 */
	public SysoLogger() {
		this(1);
	}
	/**
	 * Amount of characters each package name should be reduced with.
	 * @param packageReduce
	 *
	 */
	public SysoLogger(final int packageReduce) {
		this.shorten = packageReduce;
	}

	/**
	 * @param klass
	 * @param shorten
	 */
	protected SysoLogger(final String klass, final int shorten) {
		this.shorten = shorten;
		this.name = klass;
	}

	public Logger getLogger(final Class klass) {
		return new SysoLogger(klass.getName(), shorten);
	}

	/* (non-Javadoc)
	 * @see com.itextpdf.text.log.Logger#getLogger(java.lang.String)
	 */
	public Logger getLogger(final String name) {
		return new SysoLogger("[itext]", 0);
	}

	public boolean isLogging(final Level level) {
		return true;
	}

	public void warn(final String message) {
		System.out.println(String.format("%s WARN  %s", shorten(name), message));
	}

	/**
	 * @param name2
	 * @return
	 */
	private String shorten(final String className) {
		if (shorten != 0) {
			StringBuilder target = new StringBuilder();
			String name = className;
			int fromIndex = className.indexOf('.');
			while (fromIndex != -1) {
				int parseTo = (fromIndex < shorten) ? (fromIndex) : (shorten);
				target.append(name.substring(0, parseTo));
				target.append('.');
				name = name.substring(fromIndex + 1);
				fromIndex = name.indexOf('.');
			}
			target.append(className.substring(className.lastIndexOf('.') + 1));
			return target.toString();
		}
		return className;
	}

	public void trace(final String message) {
		System.out.println(String.format("%s TRACE %s", shorten(name), message));
	}

	public void debug(final String message) {
		System.out.println(String.format("%s DEBUG %s", shorten(name), message));
	}

	public void info(final String message) {
		System.out.println(String.format("%s INFO  %s", shorten(name), message));
	}

	public void error(final String message) {
		System.out.println(String.format("%s ERROR %s", name, message));
	}

	public void error(final String message, final Exception e) {
		System.out.println(String.format("%s ERROR %s", name, message));
		e.printStackTrace(System.out);
	}
}