/**
 * Redistribution and use of this software and associated documentation ("Software"), with or
 * without modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain copyright statements and notices. Redistributions
 * must also contain a copy of this document.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other materials provided with
 * the distribution.
 *
 * 3. The name "Exolab" must not be used to endorse or promote products derived from this Software
 * without prior written permission of Intalio, Inc. For written permission, please contact
 * info@exolab.org.
 *
 * 4. Products derived from this Software may not be called "Exolab" nor may "Exolab" appear in
 * their names without prior written permission of Intalio, Inc. Exolab is a registered trademark of
 * Intalio, Inc.
 *
 * 5. Due credit should be given to the Exolab Project (http://www.exolab.org/).
 *
 * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESSED OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL INTALIO, INC. OR ITS
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
 * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2002-2004 (C) Intalio, Inc. All Rights Reserved.
 *
 * $Id$
 */

package org.exolab.castor.util;

import java.io.File;
import java.net.URL;
import java.util.Date;
import java.text.SimpleDateFormat;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;

/**
 * A class which contains the version information
 *
 * @author <a href="mailto:kvisco-at-intalio.com">Keith Visco</a>
 * @version $Revision$ $Date: 2006-04-05 15:43:19 -0600 (Wed, 05 Apr 2006) $
 */
public final class Version {

  /**
   * The version number
   */
  public static final String VERSION = "1.4.1";

  /**
   * The version date.
   */
  public static final String VERSION_DATE = "20160515";

  /**
   * The version number with build information
   */
  public static final String BUILD_VERSION = Version.getBuildVersion();

  private static final String JAR_PROTOCOL = "jar:";
  private static final String FILE_PROTOCOL = "file:";
  private static final String DATE_FORMAT = "yyyyMMdd.HHmmss";

  public static String getBuildVersion() {

    StringBuilder buffer = new StringBuilder(VERSION);
    String classname = Version.class.getName();
    String resource = "/" + classname.replace('.', '/') + ".class";

    URL url = Version.class.getResource(resource);
    // shouldn't be null, but you never know
    if (url != null) {
      buffer.append("  [");
      String href = url.toString();
      Date date = null;
      if (href.startsWith(JAR_PROTOCOL)) {
        href = href.substring(JAR_PROTOCOL.length());
        if (href.startsWith(FILE_PROTOCOL))
          href = href.substring(FILE_PROTOCOL.length());

        int idx = href.indexOf('!');
        // -- get entry name (remove '!/' from beginning)
        String entryName = href.substring(idx + 2);
        href = href.substring(0, idx);
        try {
          ZipFile file = new ZipFile(href);
          ZipEntry entry = file.getEntry(entryName);
          if (entry != null) {
            long t = entry.getTime();
            if (t > 0) {
              date = new Date(entry.getTime());
            }
          }
        } catch (java.io.IOException iox) {
          // -- ignore...problem with finding or reading jar.
        }
      } else if (href.startsWith(FILE_PROTOCOL)) {
        File file = new File(href.substring(FILE_PROTOCOL.length()));
        date = new Date(file.lastModified());
      }
      if (date != null) {
        SimpleDateFormat format = new SimpleDateFormat(DATE_FORMAT);
        buffer.append(format.format(date));
      } else
        buffer.append('0');
      buffer.append(']');
    }
    return buffer.toString();

  } // -- getBuildVersion

  /**
   * Command line
   */
  public static void main(String[] args) {
    System.out.println(BUILD_VERSION);
  }

}
