/**
* Copyright (c) 2009--2010 Red Hat, Inc.
*
* This software is licensed to you under the GNU General Public License,
* version 2 (GPLv2). There is NO WARRANTY for this software, express or
* implied, including the implied warranties of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2
* along with this software; if not, see
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* Red Hat trademarks are not licensed under GPLv2. No permission is
* granted to use or replicate Red Hat trademarks that are incorporated
* in this software or its documentation.
*/
package com.redhat.rhn.common.finder;
import java.io.File;
import java.net.URL;
/**
* A factory that returns the correct type of finder.
*
* @version $Rev$
*/
public class FinderFactory {
private FinderFactory() {
}
/**
* Return the correct finder for finding classes in the given package.
* @param packageName Name of package to be searched.
* @return Finder to use for given package name.
*/
public static Finder getFinder(String packageName) {
// Start by translating into an absolute path.
String name = packageName;
if (!packageName.startsWith("/")) {
name = "/" + name;
}
name = name.replace('.', '/');
URL packageUrl = FinderFactory.class.getResource(name);
// This only happens if the .jar file isn't well-formed, so we
// shouldn't have this problem, ever.
if (packageUrl == null) {
throw new IllegalArgumentException("Not a well formed jar file");
}
File directory = new File(packageUrl.getFile());
if (!directory.isFile() && !directory.isDirectory()) {
// This is a jar file that we are dealing with.
return new JarFinder(packageUrl);
}
return new FileFinder(directory, name);
}
}