/*

 *  $Id: OsVersion.java 5819 2006-06-14 07:29:09Z cesar $

 *  IzPack

 *  Copyright (C) 2004 Hani Suleiman

 *

 *  File :               OsVersion.java

 *  Description :        Helper for OS version handling.

 *

 *  This program is free software; you can redistribute it and/or

 *  modify it under the terms of the GNU General Public License

 *  as published by the Free Software Foundation; either version 2

 *  of the License, or any later version.

 *

 *  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 General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

 */

package com.izforge.izpack.util;



/**

 * Date: Nov 9, 2004 Time: 8:53:22 PM

 * @author hani

 */

public final class OsVersion

{

  public static final String OS_NAME = System.getProperty("os.name");



  private static boolean startsWith(String str, String prefix)

  {

    return str != null && str.startsWith(prefix);

  }



  private static boolean startsWithIgnoreCase(String str, String prefix)

  {

    return str != null && str.toUpperCase().startsWith(prefix.toUpperCase());

  }



  /**

   * True if this is FreeBSD.

   */

  public static final boolean IS_FREEBSD = startsWithIgnoreCase(OS_NAME, "FreeBSD");



  /**

   * True if this is Linux.

   */

  public static final boolean IS_LINUX = startsWithIgnoreCase(OS_NAME, "Linux");



  /**

   * True if this is HP-UX.

   */

  public static final boolean IS_HPUX = startsWithIgnoreCase(OS_NAME, "HP-UX");



  /**

   * True if this is AIX.

   */

  public static final boolean IS_AIX = startsWithIgnoreCase(OS_NAME, "AIX");



  /**

   * True if this is SunOS.

   */

  public static final boolean IS_SUNOS = startsWithIgnoreCase(OS_NAME, "SunOS");



  /**

   * True if this is OS/2.

   */

  public static final boolean IS_OS2 = startsWith(OS_NAME, "OS/2");



  /**

   * True if this is the Mac OS X.

   */

  public static final boolean IS_OSX = startsWith(OS_NAME, "Mac") && OS_NAME.endsWith("X");



  /**

   * True if this is Windows.

   */

  public static final boolean IS_WINDOWS = startsWith(OS_NAME, "Windows");

  

  /**

   * True if this is some variant of Unix (OSX, Linux, Solaris, FreeBSD, etc).

   */ 

  public static final boolean IS_UNIX = !IS_OS2 && !IS_WINDOWS;

}