--- /dev/null 2019-04-24 19:10:13.000000000 -0400 +++ new/src/jdk.jpackage/share/classes/jdk/jpackage/internal/Platform.java 2019-04-24 19:10:08.671369200 -0400 @@ -0,0 +1,105 @@ +/* + * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code 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 + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package jdk.jpackage.internal; + +import java.util.regex.Pattern; + +/** + * Platform + * + * Use Platform to detect the operating system + * that is currently running. + * + * Example: + * + * Platform platform = Platform.getPlatform(); + * + * switch(platform) { + * case Platform.MAC: { + * // Do something + * break; + * } + * case Platform.WINDOWS: + * case Platform.LINUX: { + * // Do something else + * } + * } + * + */ +enum Platform {UNKNOWN, WINDOWS, LINUX, MAC; + private static final Platform platform; + private static final int majorVersion; + private static final int minorVersion; + + static { + String os = System.getProperty("os.name").toLowerCase(); + + if (os.indexOf("win") >= 0) { + platform = Platform.WINDOWS; + } + else if (os.indexOf("nix") >= 0 || os.indexOf("nux") >= 0) { + platform = Platform.LINUX; + } + else if (os.indexOf("mac") >= 0) { + platform = Platform.MAC; + } + else { + platform = Platform.UNKNOWN; + } + + String version = System.getProperty("os.version").toString(); + String[] parts = version.split(Pattern.quote(".")); + + if (parts.length > 0) { + majorVersion = Integer.parseInt(parts[0]); + + if (parts.length > 1) { + minorVersion = Integer.parseInt(parts[1]); + } + else { + minorVersion = -1; + } + } + else { + majorVersion = -1; + minorVersion = -1; + } + } + + private Platform() {} + + static Platform getPlatform() { + return platform; + } + + static int getMajorVersion() { + return majorVersion; + } + + static int getMinorVersion() { + return minorVersion; + } +}