Initial version of SystemUtils for system constants
git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@136983 13f79535-47bb-0310-9956-ffa450edef68
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Stephen Colebourne
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package org.apache.commons.lang;
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/* ====================================================================
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* The Apache Software License, Version 1.1
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*
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* Copyright (c) 2002 The Apache Software Foundation. All rights
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* reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. The end-user documentation included with the redistribution, if
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* any, must include the following acknowlegement:
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* "This product includes software developed by the
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* Apache Software Foundation (http://www.apache.org/)."
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* Alternately, this acknowlegement may appear in the software itself,
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* if and wherever such third-party acknowlegements normally appear.
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*
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* 4. The names "The Jakarta Project", "Commons", and "Apache Software
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* Foundation" must not be used to endorse or promote products derived
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* from this software without prior written permission. For written
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* permission, please contact apache@apache.org.
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*
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* 5. Products derived from this software may not be called "Apache"
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* nor may "Apache" appear in their names without prior written
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* permission of the Apache Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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* ====================================================================
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*
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* This software consists of voluntary contributions made by many
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* individuals on behalf of the Apache Software Foundation. For more
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* information on the Apache Software Foundation, please see
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* <http://www.apache.org/>.
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*/
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/**
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* Common <code>System</code> class helpers.
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*
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* @author Based on code from Avalon Excalibur
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* @author Based on code from Lucene
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* @author <a href="mailto:scolebourne@apache.org">Stephen Colebourne</a>
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* @version $Id: SystemUtils.java,v 1.1 2002/08/22 22:11:25 scolebourne Exp $
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*/
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public class SystemUtils {
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/**
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* Prevent construction of SystemUtils instances
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*/
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private SystemUtils() {
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}
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/** The line separator string from System.getProperty() */
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public static final String LINE_SEPARATOR = System.getProperty("line.separator");
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/** The path separator string from System.getProperty() */
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public static final String PATH_SEPARATOR = System.getProperty("path.separator");
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/** The file separator string from System.getProperty() */
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public static final String FILE_SEPARATOR = System.getProperty("file.separator");
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/** The working (user) directory string from System.getProperty() */
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public static final String USER_WORKING_DIRECTORY = System.getProperty("user.dir");
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/** The user home directory string from System.getProperty() */
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public static final String USER_HOME_DIRECTORY = System.getProperty("user.home");
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/** The user account name string from System.getProperty() */
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public static final String USER_NAME = System.getProperty("user.name");
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/** The os name string from System.getProperty() */
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public static final String OS_NAME = System.getProperty("os.name");
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/** The os architecture string from System.getProperty() */
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public static final String OS_ARCHITECTURE = System.getProperty("os.arch");
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/** The os version string from System.getProperty() */
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public static final String OS_VERSION = System.getProperty("os.version");
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/** True iff this is running on Windows */
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public static final boolean IS_WINDOWS;
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/** True iff this is running on Unix */
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public static final boolean IS_UNIX;
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/** True iff this is running on Mac */
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public static final boolean IS_MAC;
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/** True iff this is running on OS2 */
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public static final boolean IS_OS2;
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/** True iff this is running on Linux */
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public static final boolean IS_LINUX;
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/** The Java vendor string from System.getProperty() */
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public static final String JAVA_VENDOR = System.getProperty("java.vendor");
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/** The Java vendor url string from System.getProperty() */
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public static final String JAVA_VENDOR_URL = System.getProperty("java.vendor.url");
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/** The Java installation directory string from System.getProperty() */
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public static final String JAVA_HOME = System.getProperty("java.home");
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/** The Java class version number string from System.getProperty() */
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public static final String JAVA_CLASS_VERSION = System.getProperty("java.class.version");
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/** The Java classpath string from System.getProperty() */
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public static final String JAVA_CLASS_PATH = System.getProperty("java.class.path");
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/** The Java version string from System.getProperty() */
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public static final String JAVA_VERSION = System.getProperty("java.version");
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/** True iff this is Java version 1.1. */
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public static final boolean IS_JAVA_1_1 = JAVA_VERSION.startsWith("1.1.");
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/** True iff this is Java version 1.2. */
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public static final boolean IS_JAVA_1_2 = JAVA_VERSION.startsWith("1.2.");
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/** True iff this is Java version 1.3. */
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public static final boolean IS_JAVA_1_3 = JAVA_VERSION.startsWith("1.3.");
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/** True iff this is Java version 1.4. */
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public static final boolean IS_JAVA_1_4 = JAVA_VERSION.startsWith("1.4.");
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/** True iff this is Java version 1.3. */
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public static final boolean IS_JAVA_1_5 = JAVA_VERSION.startsWith("1.5.");
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/*
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* The JLS doesn't seem to specify an exact naming convention for the
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* os.name. We ensure a uniform naming here.
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*/
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static {
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// from http://www.geocities.com/vamp201/os.html
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if (OS_NAME.startsWith("Windows")) {
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IS_WINDOWS = true;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("SunOS")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Solaris")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Linux")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = true;
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} else if (OS_NAME.startsWith("HP-UX")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("AIX")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Irix")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Digital Unix")) {
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IS_WINDOWS = false;
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IS_UNIX = true;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("OS/2")) {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = true;
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IS_LINUX = false;
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} else if (OS_NAME.startsWith("Mac")) {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = true;
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IS_OS2 = false;
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IS_LINUX = false;
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} else {
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IS_WINDOWS = false;
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IS_UNIX = false;
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IS_MAC = false;
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IS_OS2 = false;
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IS_LINUX = false;
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}
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}
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}
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