/* 
 * 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.system;

import java.io.BufferedReader;
import java.io.InputStreamReader;

/**
 * Parses the Windows 98 environment--the same class should work for other
 * Windows versions, but I only have one to test.  Windows 9x environments
 * can only use one processor--even if there are more installed in the system.
 *
 * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
 * @version $Id$
 */
public final class Windows98 implements CPUParser
{
    private final int m_processors = 1;
    private final String m_cpuInfo;

    public Windows98()
    {
        String info = "";

        try
        {
            // This is not the propper environment variable for Win 9x
            Runtime rt = Runtime.getRuntime();
            Process proc = rt.exec( "command.com /C echo %PROCESSOR_IDENTIFIER%" );
            BufferedReader reader = new BufferedReader( new InputStreamReader( proc.getInputStream() ) );
            info = reader.readLine();
        }
        catch( Exception e )
        {
        }

        m_cpuInfo = info;
    }

    /**
     * Return the number of processors available on the machine
     */
    public int numProcessors()
    {
        return m_processors;
    }

    /**
     * Return the cpu info for the processors (assuming symetric multiprocessing
     * which means that all CPUs are identical).  The format is:
     *
     * ${arch} family ${family} Model ${model} Stepping ${stepping}, ${identifier}
     */
    public String cpuInfo()
    {
        return m_cpuInfo;
    }
}