com.liferay.portal.kernel.util.OSDetector.java Source code

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Here is the source code for com.liferay.portal.kernel.util.OSDetector.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.portal.kernel.util;

import com.liferay.petra.string.StringPool;

import java.io.File;

/**
 * @author Brian Wing Shun Chan
 */
public class OSDetector {

    public static String getBitmode() {
        if (_bitMode != null) {
            return _bitMode;
        }

        _bitMode = System.getProperty("sun.arch.data.model");

        if (Validator.isNull(_bitMode)) {
            _bitMode = System.getProperty("com.ibm.vm.bitmode");
        }

        if (Validator.isNull(_bitMode)) {
            String arch = System.getProperty("os.arch");

            arch = StringUtil.toLowerCase(arch);

            if (arch.equals("amd64") || arch.equals("x86_64")) {
                _bitMode = "64";
            } else if (arch.equals("i386") || arch.equals("i686") || arch.equals("x86")) {

                _bitMode = "32";
            }
        }

        return _bitMode;
    }

    public static boolean isAIX() {
        if (_aix != null) {
            return _aix.booleanValue();
        }

        String osName = System.getProperty("os.name");

        osName = StringUtil.toLowerCase(osName);

        if (osName.equals("aix")) {
            _aix = Boolean.TRUE;
        } else {
            _aix = Boolean.FALSE;
        }

        return _aix.booleanValue();
    }

    public static boolean isApple() {
        if (_apple != null) {
            return _apple.booleanValue();
        }

        String osName = System.getProperty("os.name");

        osName = StringUtil.toLowerCase(osName);

        if (osName.contains("darwin") || osName.contains("mac")) {
            _apple = Boolean.TRUE;
        } else {
            _apple = Boolean.FALSE;
        }

        return _apple.booleanValue();
    }

    public static boolean isLinux() {
        if (_linux != null) {
            return _linux.booleanValue();
        }

        String osName = System.getProperty("os.name");

        osName = StringUtil.toLowerCase(osName);

        if (osName.contains("linux")) {
            _linux = Boolean.TRUE;
        } else {
            _linux = Boolean.FALSE;
        }

        return _linux.booleanValue();
    }

    public static boolean isUnix() {
        if (_unix != null) {
            return _unix.booleanValue();
        }

        if (File.pathSeparator.equals(StringPool.COLON)) {
            _unix = Boolean.TRUE;
        } else {
            _unix = Boolean.FALSE;
        }

        return _unix.booleanValue();
    }

    public static boolean isWindows() {
        if (_windows != null) {
            return _windows.booleanValue();
        }

        if (File.pathSeparator.equals(StringPool.SEMICOLON)) {
            _windows = Boolean.TRUE;
        } else {
            _windows = Boolean.FALSE;
        }

        return _windows.booleanValue();
    }

    private static Boolean _aix;
    private static Boolean _apple;
    private static String _bitMode;
    private static Boolean _linux;
    private static Boolean _unix;
    private static Boolean _windows;

}