SystemInfo.java

/*
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 *    SystemInfo.java
 *    Copyright (C) 2005-2012 University of Waikato, Hamilton, New Zealand
 *
 */
package weka.core;

import java.util.Collections;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;

/**
 * This class prints some information about the system setup, like Java version, JVM settings etc. Useful for Bug-Reports.
 * 
 * @author FracPete (fracpete at waikato dot ac dot nz)
 * @version $Revision: 8034 $
 */
public class SystemInfo implements RevisionHandler {

	/** for storing the information */
	private Hashtable<String, String> m_Info = null;

	/**
	 * initializes the object and reads the system information
	 */
	public SystemInfo() {
		m_Info = new Hashtable<String, String>();
		//readProperties();
	}

	/**
	 * reads all the properties and stores them in the hashtable
	 */
	/*private void readProperties() {
	  Properties          props;
	  Enumeration         enm;
	  String              name;
	  String[]            laf;
	  String              tmpStr;
	  int                 i;
	  Memory              mem;
	  
	  m_Info.clear();

	  // System information
	  props = System.getProperties();
	  enm   = props.propertyNames();
	  while (enm.hasMoreElements()) {
	    name = (String)enm.nextElement();
	    m_Info.put(name, (String)props.get(name));
	  }

	  // additional WEKA info
	  m_Info.put("weka.version", Version.VERSION);

	  // look and feel info
	  //laf    = LookAndFeel.getInstalledLookAndFeels();
	  tmpStr = "";
	  for (i = 0; i < laf.length; i++) {
	    if (i > 0)
	      tmpStr += ",";
	    tmpStr += laf[i];
	  }
	  m_Info.put("ui.installedLookAndFeels", tmpStr);
	  //m_Info.put("ui.currentLookAndFeel", LookAndFeel.getSystemLookAndFeel());

	  // memory info
	  mem = new Memory();
	  m_Info.put(
	      "memory.initial", 
	      "" + Utils.doubleToString(Memory.toMegaByte(mem.getInitial()), 1) + "MB" 
	      + " (" + mem.getInitial() + ")");
	  m_Info.put(
	      "memory.max", 
	      "" + Utils.doubleToString(Memory.toMegaByte(mem.getMax()), 1) + "MB"
	      + " (" + mem.getMax() + ")");
	}*/

	/**
	 * returns a copy of the system info. the key is the name of the property and the associated object is the value of the property (a string).
	 */
	public Hashtable getSystemInfo() {
		return (Hashtable) m_Info.clone();
	}

	/**
	 * returns a string representation of all the system properties
	 */
	public String toString() {
		Enumeration<String> enm;
		String result;
		String key;
		Vector<String> keys;
		int i;
		String value;

		result = "";
		keys = new Vector<String>();

		// get names and sort them
		enm = m_Info.keys();
		while (enm.hasMoreElements())
			keys.add(enm.nextElement());
		Collections.sort(keys);

		// generate result
		for (i = 0; i < keys.size(); i++) {
			key = keys.get(i).toString();
			value = m_Info.get(key).toString();
			if (key.equals("line.separator"))
				value = Utils.backQuoteChars(value);
			result += key + ": " + value + "\n";
		}

		return result;
	}

	/**
	 * Returns the revision string.
	 * 
	 * @return the revision
	 */
	public String getRevision() {
		return RevisionUtils.extract("$Revision: 8034 $");
	}

	/**
	 * for printing the system info to stdout.
	 */
	public static void main(String[] args) {
		System.out.println(new SystemInfo());
	}
}