Java tutorial
/******************************************************************************* * Copyright (c) 2011 Google, Inc. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Google, Inc. - initial API and implementation *******************************************************************************/ package org.eclipse.wb.internal.core; import org.eclipse.swt.SWT; import org.eclipse.ui.plugin.AbstractUIPlugin; import org.apache.commons.lang.StringUtils; import org.apache.commons.lang.SystemUtils; import java.net.InetAddress; import java.net.UnknownHostException; import java.util.Locale; /** * Helper for environment state access. * * @author scheglov_ke * @coverage core */ public final class EnvironmentUtils extends AbstractUIPlugin { //////////////////////////////////////////////////////////////////////////// // // Host // //////////////////////////////////////////////////////////////////////////// public static final String HOST_NAME = getHostName(); public static final boolean DEVELOPER_HOST; static { String host = HOST_NAME.toUpperCase(Locale.ENGLISH); DEVELOPER_HOST = "SCHEGLOV-KE".equals(host) || "SCHEGLOV-MACPRO".equals(host) || "SCHEGLOV-WIN".equals(host) || "SCHEGLOV".equals(host) || "MITIN-AA".equals(host) || "MITIN-AA-MAC".equals(host) || "SABLIN-AA".equals(host) || "FLANKER-WINDOWS".equals(host); } //////////////////////////////////////////////////////////////////////////// // // Operating systems // //////////////////////////////////////////////////////////////////////////// /** True if this is running on 64-bit OS */ public static final boolean IS_64BIT_OS; /** True if this is running on Windows */ public static final boolean IS_WINDOWS; /** True if this is running on Unix */ public static final boolean IS_UNIX; /** True if this is running on Mac */ public static final boolean IS_MAC; /** True if this is running on Mac with Cocoa SWT */ public static final boolean IS_MAC_COCOA; /** True if this is running on OS2 */ public static final boolean IS_OS2; /** True if this is running on Linux */ public static final boolean IS_LINUX; /** True if this is running on Motif */ public static final boolean IS_MOTIF; private static final String OS_NAME_OSX_PREFIX = "Mac OS X"; public static final boolean IS_MAC_10_6 = getOSMatches(OS_NAME_OSX_PREFIX, "10.6"); private static final String OS_NAME_WINDOWS_PREFIX = "Windows"; public static final boolean IS_WINDOWS_XP = getOSMatches(OS_NAME_WINDOWS_PREFIX, "5.1"); public static final boolean IS_WINDOWS_VISTA = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.0"); public static final boolean IS_WINDOWS_7 = getOSMatches(OS_NAME_WINDOWS_PREFIX, "6.1"); /* * The JLS doesn't seem to specify an exact naming convention for the * os.name. We ensure a uniform naming here. */ static { if (SystemUtils.OS_NAME.startsWith("Windows")) { IS_WINDOWS = true; IS_UNIX = false; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("SunOS")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("Solaris")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("Linux")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = true; } else if (SystemUtils.OS_NAME.startsWith("HP-UX")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("AIX")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("Irix")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("Digital Unix")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("OS/400")) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("OS/2")) { IS_WINDOWS = false; IS_UNIX = false; IS_MAC = false; IS_OS2 = true; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith(OS_NAME_OSX_PREFIX)) { IS_WINDOWS = false; IS_UNIX = true; IS_MAC = true; IS_OS2 = false; IS_LINUX = false; } else if (SystemUtils.OS_NAME.startsWith("Mac")) { IS_WINDOWS = false; IS_UNIX = false; IS_MAC = true; IS_OS2 = false; IS_LINUX = false; } else { IS_WINDOWS = false; IS_UNIX = false; IS_MAC = false; IS_OS2 = false; IS_LINUX = false; } IS_MAC_COCOA = IS_MAC && "cocoa".equals(SWT.getPlatform()); IS_MOTIF = "motif".equals(SWT.getPlatform()); IS_64BIT_OS = SystemUtils.OS_ARCH.indexOf("64") != -1; } //////////////////////////////////////////////////////////////////////////// // // System utils // //////////////////////////////////////////////////////////////////////////// private static String getHostName() { String hostName = ""; try { hostName = InetAddress.getLocalHost().getHostName(); String[] names = StringUtils.split(hostName, '.'); for (String name : names) { if (StringUtils.isNumeric(name)) { // getHostName() returned in a IP-address form return hostName; } } hostName = names[0]; } catch (UnknownHostException e) { } return hostName; } /** * Decides if the operating system matches. * * @param osNamePrefix * the prefix for the OS name. * @param osVersionPrefix * the prefix for the version. * @return <code>true</code> if matches, or <code>false</code> if not or can't determine. */ private static boolean getOSMatches(String osNamePrefix, String osVersionPrefix) { if (SystemUtils.OS_NAME == null || SystemUtils.OS_VERSION == null) { return false; } return SystemUtils.OS_NAME.startsWith(osNamePrefix) && SystemUtils.OS_VERSION.startsWith(osVersionPrefix); } //////////////////////////////////////////////////////////////////////////// // // JVM version // //////////////////////////////////////////////////////////////////////////// private static Float m_forcedJavaVersion = null; /** * @return the Java version number as <code>float</code>. For example <code>1.5</code> for JDK * 1.5. */ public static float getJavaVersion() { if (m_forcedJavaVersion != null) { return m_forcedJavaVersion; } return SystemUtils.JAVA_VERSION_FLOAT; } /** * Allows temporary (for tests) specify different Java version. */ public static void setForcedJavaVersion(Float version) { m_forcedJavaVersion = version; } //////////////////////////////////////////////////////////////////////////// // // IBM Java // //////////////////////////////////////////////////////////////////////////// private static final String WBP_JAVA_VM_VENDOR = "wbp java.vm.vendor"; /** * IBM Java has its own glitches. */ public static boolean isJavaIBM() { return getTestSensetive_JAVA_VM_VENDOR().toUpperCase(Locale.ENGLISH).contains("IBM"); } private static String getTestSensetive_JAVA_VM_VENDOR() { String forcedVendor = System.getProperty(WBP_JAVA_VM_VENDOR); if (forcedVendor != null) { return forcedVendor; } else { return SystemUtils.JAVA_VM_VENDOR; } } public static void setForcedIBM(boolean forced) { if (forced) { System.setProperty(WBP_JAVA_VM_VENDOR, "Fake IBM"); } else { System.clearProperty(WBP_JAVA_VM_VENDOR); } } //////////////////////////////////////////////////////////////////////////// // // Development // //////////////////////////////////////////////////////////////////////////// private static final String WBP_TESTING_TIME = "wbp.testing.time"; // public static boolean isTestingTime() { return "true".equals(System.getProperty(WBP_TESTING_TIME)); } public static void setTestingTime(boolean value) { System.setProperty(WBP_TESTING_TIME, value ? "true" : "false"); } }