Package net.sf.robocode.repository.items.handlers

Source Code of net.sf.robocode.repository.items.handlers.ClassHandler

/**
* Copyright (c) 2001-2014 Mathew A. Nelson and Robocode contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://robocode.sourceforge.net/license/epl-v10.html
*/
package net.sf.robocode.repository.items.handlers;


import net.sf.robocode.repository.IRepository;
import net.sf.robocode.repository.items.IRepositoryItem;
import net.sf.robocode.repository.items.RobotItem;
import net.sf.robocode.repository.root.IRepositoryRoot;
import net.sf.robocode.util.UrlUtil;

import java.net.URL;


/**
* Item handler for accepting and registering Java class files.
*
* @author Pavel Savara (original)
* @author Flemming N. Larsen (contributor)
*/
public class ClassHandler extends ItemHandler {
 
  /**
   * {@inheritDoc}
   */
  @Override
  protected IRepositoryItem acceptItem(URL itemURL, IRepositoryRoot root, IRepository repository) {
    // Accept and register the item if it is a Java class file, but not an inner class file
    String name = itemURL.toString().toLowerCase();
    if (name.endsWith(".class") && !name.contains("$")) {
      return register(itemURL, root, repository);
    }
    return null;
  }

  /**
   * Registers the class file with the specified URL as a RobotItem.
   *
   * @param classFileUrl is the URL of the class file to register.
   * @param root is the repository root containing the class file to register.
   * @param repository is the repository, where the class file is automatically added or updated,
   *                   when the class file is registered.
   * @return a RobotItem that has been created or updated in the repository.
   */
  private RobotItem register(URL classFileUrl, IRepositoryRoot root, IRepository repository) {
    RobotItem item = null;

    // Check if the class file is already registered in the repository
    String friendlyUrl = UrlUtil.removeFileExtension(classFileUrl.toString());
   
    IRepositoryItem repositoryItem = repository.getItem(friendlyUrl);
    if (repositoryItem instanceof RobotItem) {
      item = (RobotItem) repositoryItem;
    }

    // If the class file has not been registered then create a new RobotItem based on the class file URL
    if (item == null) {
      item = new RobotItem(classFileUrl, root);
    }

    // Set the class path URL and class URL on the RobotItem
    item.setClassPathURL(root.getURL());
    item.setClassURL(classFileUrl);

    // Add or update the item in the repository and return it
    repository.addOrUpdateItem(item);
    return item;
  }
}
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