ClassScannerListener.java

/*
 * Copyright 2008 Whohoo Licensed 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 com.googlecode.mycontainer.util.cpscanner;

import java.net.URL;

public abstract class ClassScannerListener implements ScannerListener {

	public void resourceFound(URL base, URL resource) {
		try {
			if (isClass(resource)) {
				String str = resource.toString();
				String baseStr = base.toString();
				StringBuilder builder = new StringBuilder(str);
				int idx = builder.indexOf("!");
				if (idx < 0) {
					idx = baseStr.length();
				} else {
					idx += 2;
				}
				builder.delete(0, idx);
				builder.delete(builder.length() - 6, builder.length());
				str = builder.toString().replaceAll("/", ".");
				Class<?> clazz = Class.forName(str);
				classFound(base, clazz);
			}
		} catch (ClassNotFoundException e) {
			throw new RuntimeException(e);
		}
	}

	public boolean isClass(URL url) {
		return url.toString().endsWith(".class");
	}

	public abstract void classFound(URL base, Class<?> clazz);

}