/* 
 * 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 XP environment.
 *
 * @author <a href="mailto:dev@avalon.apache.org">Avalon Development Team</a>
 * @version $Id$
 */
public final class WindowsXP implements CPUParser
{
    private final int m_processors;
    private final String m_cpuInfo;

    /**
     * Create this instance of CPUParser and gather information from
     * the Windows XP system.
     */
    public WindowsXP()
    {
        int procs = 1;
        String info = "";

        try
        {
            Runtime rt = Runtime.getRuntime();
            Process proc = rt.exec( "cmd.exe /C echo %NUMBER_OF_PROCESSORS%" );
            BufferedReader reader = new BufferedReader( new InputStreamReader(
                proc.getInputStream() ) );
            String numProcs = reader.readLine();

            proc = rt.exec( "cmd.exe /C echo %PROCESSOR_IDENTIFIER%" );
            reader = new BufferedReader( new InputStreamReader( proc.getInputStream() ) );
            info = reader.readLine();

            procs = Integer.parseInt( numProcs );
        }
        catch( Exception e )
        {
        }

        m_processors = procs;
        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;
    }
}