content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.jstorm.yarn.utils;
  
  public class OSInfo {
  
      private static String OS = System.getProperty("os.name").toLowerCase();
  
      private static OSInfo _instance = new OSInfo();
  
      private EPlatform platform;
  
      private OSInfo() {
      }
  
      public static boolean isLinux() {
          return OS.indexOf("linux") >= 0;
      }
  
      public static boolean isMacOS() {
          return OS.indexOf("mac") >= 0 && OS.indexOf("os") > 0 && OS.indexOf("x") < 0;
      }
  
      public static boolean isMacOSX() {
          return OS.indexOf("mac") >= 0 && OS.indexOf("os") > 0 && OS.indexOf("x") > 0;
      }
  
      public static boolean isMac() {
          return OS.indexOf("mac") >= 0 && OS.indexOf("os") > 0;
      }
  
      public static boolean isWindows() {
          return OS.indexOf("windows") >= 0;
      }
  
      public static boolean isOS2() {
          return OS.indexOf("os/2") >= 0;
      }
  
      public static boolean isSolaris() {
          return OS.indexOf("solaris") >= 0;
      }
  
      public static boolean isSunOS() {
          return OS.indexOf("sunos") >= 0;
      }
  
      public static boolean isMPEiX() {
          return OS.indexOf("mpe/ix") >= 0;
      }
  
      public static boolean isHPUX() {
          return OS.indexOf("hp-ux") >= 0;
      }
  
      public static boolean isAix() {
          return OS.indexOf("aix") >= 0;
      }
  
      public static boolean isOS390() {
          return OS.indexOf("os/390") >= 0;
      }
  
      public static boolean isFreeBSD() {
          return OS.indexOf("freebsd") >= 0;
      }
  
      public static boolean isIrix() {
          return OS.indexOf("irix") >= 0;
      }
  
      public static boolean isDigitalUnix() {
          return OS.indexOf("digital") >= 0 && OS.indexOf("unix") > 0;
      }
  
      public static boolean isNetWare() {
          return OS.indexOf("netware") >= 0;
      }
  
      public static boolean isOSF1() {
          return OS.indexOf("osf1") >= 0;
      }
  
      public static boolean isOpenVMS() {
          return OS.indexOf("openvms") >= 0;
      }
  
      /**
       * Get OS name
       * 
       * @return OS name
       */
      public static EPlatform getOSname() {
          if (isAix()) {
              _instance.platform = EPlatform.AIX;
          } else if (isDigitalUnix()) {
              _instance.platform = EPlatform.Digital_Unix;
          } else if (isFreeBSD()) {
              _instance.platform = EPlatform.FreeBSD;
          } else if (isHPUX()) {
              _instance.platform = EPlatform.HP_UX;
          } else if (isIrix()) {
              _instance.platform = EPlatform.Irix;
          } else if (isLinux()) {
              _instance.platform = EPlatform.Linux;
          } else if (isMacOS()) {
              _instance.platform = EPlatform.Mac_OS;
          } else if (isMacOSX()) {
              _instance.platform = EPlatform.Mac_OS_X;
          } else if (isMPEiX()) {
              _instance.platform = EPlatform.MPEiX;
          } else if (isNetWare()) {
              _instance.platform = EPlatform.NetWare_411;
          } else if (isOpenVMS()) {
              _instance.platform = EPlatform.OpenVMS;
          } else if (isOS2()) {
              _instance.platform = EPlatform.OS2;
          } else if (isOS390()) {
              _instance.platform = EPlatform.OS390;
          } else if (isOSF1()) {
              _instance.platform = EPlatform.OSF1;
          } else if (isSolaris()) {
              _instance.platform = EPlatform.Solaris;
          } else if (isSunOS()) {
              _instance.platform = EPlatform.SunOS;
          } else if (isWindows()) {
              _instance.platform = EPlatform.Windows;
          } else {
              _instance.platform = EPlatform.Others;
          }
          return _instance.platform;
      }
  
      /**
       * @param args
       */
      public static void main(String[] args) {
          System.out.println(System.getProperty("os.name"));
          System.out.println(System.getProperty("os.version"));
          System.out.println(System.getProperty("os.arch"));
  
          System.out.println(OSInfo.getOSname());
      }
  
  }
  