/*
 * Copyright to the original author or authors.
 * 
 * Licensed 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.rioproject.impl.system;

/**
 * Utilities to help determine operating system type
 *
 * @author Dennis Reedy
 */
public class OperatingSystemType {
    /**
     * Linux identifier
     */
    public static final String LINUX = "linux";
    /**
     * Solaris identifier
     */
    public static final String SOLARIS = "sunos";
    /**
     * Mac identifier
     */
    public static final String MACINTOSH = "Mac";
    /**
     * Windows identifier
     */
    public static final String WINDOWS = "Windows";
    /**
     * Windows 2000 identifier
     */
    public static final String WINDOWS_2K = WINDOWS+" 2000";
    /**
     * Windows XP identifier
     */
    public static final String WINDOWS_XP = WINDOWS+" XP";
    /**
     * HP-UX identifier
     */
    public static final String HP_UX = "HP-UX";

    /**
     * Check if running on Linux
     *
     * @return If running on Linux return <code>true</code>, otherwise return
     *         <code>false</code>
     */
    public static boolean isLinux() {
        String opSys = System.getProperty("os.name");
        return opSys.equalsIgnoreCase(LINUX);
    }

    /**
     * Check if running on Solaris
     *
     * @return If running on Solaris return <code>true</code>, otherwise return
     *         <code>false</code>
     */
    public static boolean isSolaris() {
        String opSys = System.getProperty("os.name");
        return opSys.equalsIgnoreCase(SOLARIS);
    }

    /**
     * Check if running on Mac
     *
     * @return If running on Mac return <code>true</code>, otherwise return
     *         <code>false</code>
     */
    public static boolean isMac() {
        String opSys = System.getProperty("os.name");
        return opSys.startsWith(MACINTOSH);
    }

    /**
     * Check if running on HP-UX
     *
     * @return If running on HP-UX return <code>true</code>, otherwise return
     *         <code>false</code>
     */
    public static boolean isHP() {
        String opSys = System.getProperty("os.name");
        return opSys.equals(HP_UX);
    }

    /**
     * Check if running on Windows
     *
     * @return If running on Windows return <code>true</code>, otherwise return
     *         <code>false</code>
     */
    public static boolean isWindows() {
        String opSys = System.getProperty("os.name");
        return opSys.startsWith(WINDOWS);
    }

    /**
     * Check if running on Windows 2000
     *
     * @return If running on Windows 2000 return <code>true</code>, otherwise
     *         return <code>false</code>
     */
    public static boolean isWindows2K() {
        String opSys = System.getProperty("os.name");
        return opSys.startsWith(WINDOWS_2K);
    }

    /**
     * Check if running on Windows XP
     *
     * @return If running on Windows XP return <code>true</code>, otherwise
     *         return <code>false</code>
     */
    public static boolean isWindowsXP() {
        String opSys = System.getProperty("os.name");
        return opSys.startsWith(WINDOWS_XP);
    }

}