1 /*
   2  * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.oracle.tools.packager;
  27 
  28 import java.util.regex.Pattern;
  29 
  30 /**
  31  * Use <code>Platform</code> to detect the operating system that is currently running.
  32  *
  33  * Example:
  34  *
  35  *  Platform platform = Platform.getPlatform();
  36  *
  37  *  switch(platform) {
  38  *    case Platform.MAC: {
  39  *      //TODO Do something
  40  *      break;
  41  *    }
  42  *    case Platform.WINDOWS:
  43  *    case Platform.LINUX: {
  44  *      //TODO Do something else
  45  *    }
  46  *  }
  47  */
  48 
  49 public enum Platform {UNKNOWN, WINDOWS, LINUX, MAC;
  50     private static final Platform platform;
  51     private static final int majorVersion;
  52     private static final int minorVersion;
  53 
  54     static {
  55         String os = System.getProperty("os.name").toLowerCase();
  56 
  57         if (os.indexOf("win") >= 0) {
  58             platform = Platform.WINDOWS;
  59         }
  60         else if (os.indexOf("nix") >= 0 || os.indexOf("nux") >= 0) {
  61             platform = Platform.LINUX;
  62         }
  63         else if (os.indexOf("mac") >= 0) {
  64             platform = Platform.MAC;
  65         }
  66         else {
  67             platform = Platform.UNKNOWN;
  68         }
  69 
  70         String version = System.getProperty("os.version").toString();
  71         String[] parts = version.split(Pattern.quote("."));
  72 
  73         if (parts.length > 0) {
  74             majorVersion = Integer.parseInt(parts[0]);
  75 
  76             if (parts.length > 1) {
  77                 minorVersion = Integer.parseInt(parts[0]);
  78             }
  79             else {
  80                 minorVersion = -1;
  81             }
  82         }
  83         else {
  84             majorVersion = -1;
  85             minorVersion = -1;
  86         }
  87     }
  88 
  89     private Platform() {}
  90 
  91     public static Platform getPlatform() {
  92         return platform;
  93     }
  94 
  95     public static int getMajorVersion() {
  96         return majorVersion;
  97     }
  98 
  99     public static int getMinorVersion() {
 100         return minorVersion;
 101     }
 102 }