FormalProcessor.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 2 of the License, or (at your option) any later
 * version. You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

package org.aitools.programd.processor.aiml;

import java.util.StringTokenizer;

import org.aitools.programd.Core;
import org.aitools.programd.parser.TemplateParser;
import org.aitools.programd.processor.ProcessorException;
import org.jdom.Element;

/**
 * Handles a <code><a href="http://aitools.org/aiml/TR/2001/WD-aiml/#section-formal">formal</a></code> element.
 * 
 * @author Jon Baer
 * @author <a href="mailto:noel@aitools.org">Noel Bush</a>
 */
public class FormalProcessor extends AIMLProcessor {

  /** The label (as required by the registration scheme). */
  public static final String label = "formal";

  /**
   * Creates a new FormalProcessor using the given Core.
   * 
   * @param core the Core object to use
   */
  public FormalProcessor(Core core) {
    super(core);
  }

  /**
   * @see AIMLProcessor#process(Element, TemplateParser)
   */
  @SuppressWarnings("unchecked")
  @Override
  public String process(Element element, TemplateParser parser) throws ProcessorException {
    String response = parser.evaluate(element.getContent());
    if ("".equals(response)) {
      return response;
    }
    StringTokenizer tokenizer = new StringTokenizer(response, " ");
    StringBuilder result = new StringBuilder(response.length());
    while (tokenizer.hasMoreTokens()) {
      String word = tokenizer.nextToken();
      if (result.length() > 0) {
        result.append(" ");
      }
      result.append(word.substring(0, 1).toUpperCase() + word.substring(1).toLowerCase());
    }
    return result.toString();
  }
}