Java tutorial
/* * 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 org.apache.commons.exec; import java.util.Locale; /** * Condition that tests the OS type. * * @version $Id: OS.java 1556869 2014-01-09 16:51:11Z britter $ */ public final class OS { private static final String FAMILY_OS_400 = "os/400"; private static final String FAMILY_Z_OS = "z/os"; private static final String FAMILY_WIN9X = "win9x"; private static final String FAMILY_OPENVMS = "openvms"; private static final String FAMILY_UNIX = "unix"; private static final String FAMILY_TANDEM = "tandem"; private static final String FAMILY_MAC = "mac"; private static final String FAMILY_DOS = "dos"; private static final String FAMILY_NETWARE = "netware"; private static final String FAMILY_OS_2 = "os/2"; private static final String FAMILY_WINDOWS = "windows"; private static final String OS_NAME = System.getProperty("os.name").toLowerCase(Locale.US); private static final String OS_ARCH = System.getProperty("os.arch").toLowerCase(Locale.US); private static final String OS_VERSION = System.getProperty("os.version").toLowerCase(Locale.US); private static final String PATH_SEP = System.getProperty("path.separator"); /** * Default constructor */ private OS() { } /** * Determines if the OS on which Ant is executing matches the given OS * family. * Possible values:<br /> * <ul> * <li>dos</li> * <li>mac</li> * <li>netware</li> * <li>os/2</li> * <li>tandem</li> * <li>unix</li> * <li>windows</li> * <li>win9x</li> * <li>z/os</li> * <li>os/400</li> * </ul> * * @param family * the family to check for * @return true if the OS matches */ private static boolean isFamily(final String family) { return isOs(family, null, null, null); } public static boolean isFamilyDOS() { return isFamily(FAMILY_DOS); } public static boolean isFamilyMac() { return isFamily(FAMILY_MAC); } public static boolean isFamilyNetware() { return isFamily(FAMILY_NETWARE); } public static boolean isFamilyOS2() { return isFamily(FAMILY_OS_2); } public static boolean isFamilyTandem() { return isFamily(FAMILY_TANDEM); } public static boolean isFamilyUnix() { return isFamily(FAMILY_UNIX); } public static boolean isFamilyWindows() { return isFamily(FAMILY_WINDOWS); } public static boolean isFamilyWin9x() { return isFamily(FAMILY_WIN9X); } public static boolean isFamilyZOS() { return isFamily(FAMILY_Z_OS); } public static boolean isFamilyOS400() { return isFamily(FAMILY_OS_400); } public static boolean isFamilyOpenVms() { return isFamily(FAMILY_OPENVMS); } /** * Determines if the OS on which Ant is executing matches the given OS name. * * @param name * the OS name to check for * @return true if the OS matches */ public static boolean isName(final String name) { return isOs(null, name, null, null); } /** * Determines if the OS on which Ant is executing matches the given OS * architecture. * * @param arch * the OS architecture to check for * @return true if the OS matches */ public static boolean isArch(final String arch) { return isOs(null, null, arch, null); } /** * Determines if the OS on which Ant is executing matches the given OS * version. * * @param version * the OS version to check for * @return true if the OS matches */ public static boolean isVersion(final String version) { return isOs(null, null, null, version); } /** * Determines if the OS on which Ant is executing matches the given OS * family, name, architecture and version * * @param family * The OS family * @param name * The OS name * @param arch * The OS architecture * @param version * The OS version * @return true if the OS matches */ public static boolean isOs(final String family, final String name, final String arch, final String version) { boolean retValue = false; if (family != null || name != null || arch != null || version != null) { boolean isFamily = true; boolean isName = true; boolean isArch = true; boolean isVersion = true; if (family != null) { if (family.equals(FAMILY_WINDOWS)) { isFamily = OS_NAME.indexOf(FAMILY_WINDOWS) > -1; } else if (family.equals(FAMILY_OS_2)) { isFamily = OS_NAME.indexOf(FAMILY_OS_2) > -1; } else if (family.equals(FAMILY_NETWARE)) { isFamily = OS_NAME.indexOf(FAMILY_NETWARE) > -1; } else if (family.equals(FAMILY_DOS)) { isFamily = PATH_SEP.equals(";") && !isFamily(FAMILY_NETWARE); } else if (family.equals(FAMILY_MAC)) { isFamily = OS_NAME.indexOf(FAMILY_MAC) > -1; } else if (family.equals(FAMILY_TANDEM)) { isFamily = OS_NAME.indexOf("nonstop_kernel") > -1; } else if (family.equals(FAMILY_UNIX)) { isFamily = PATH_SEP.equals(":") && !isFamily(FAMILY_OPENVMS) && (!isFamily(FAMILY_MAC) || OS_NAME.endsWith("x")); } else if (family.equals(FAMILY_WIN9X)) { isFamily = isFamily(FAMILY_WINDOWS) && (OS_NAME.indexOf("95") >= 0 || OS_NAME.indexOf("98") >= 0 || OS_NAME.indexOf("me") >= 0 || OS_NAME.indexOf("ce") >= 0); } else if (family.equals(FAMILY_Z_OS)) { isFamily = OS_NAME.indexOf(FAMILY_Z_OS) > -1 || OS_NAME.indexOf("os/390") > -1; } else if (family.equals(FAMILY_OS_400)) { isFamily = OS_NAME.indexOf(FAMILY_OS_400) > -1; } else if (family.equals(FAMILY_OPENVMS)) { isFamily = OS_NAME.indexOf(FAMILY_OPENVMS) > -1; } else { throw new IllegalArgumentException("Don\'t know how to detect os family \"" + family + "\""); } } if (name != null) { isName = name.equals(OS_NAME); } if (arch != null) { isArch = arch.equals(OS_ARCH); } if (version != null) { isVersion = version.equals(OS_VERSION); } retValue = isFamily && isName && isArch && isVersion; } return retValue; } }