FileResourceLoader.java

/*
 ** Rachel  - Resource Loading Toolkit for Web Start/JNLP
 ** Copyright (c) 2001, 2002 by Gerald Bauer
 **
 ** This program is free software.
 **
 ** You may redistribute it and/or modify it under the terms of the GNU
 ** General Public License as published by the Free Software Foundation.
 ** Version 2 of the license should be included with this distribution in
 ** the file LICENSE, as well as License.html. If the license is not
 ** included with this distribution, you may find a copy at the FSF web
 ** site at 'www.gnu.org' or 'www.fsf.org', or you may write to the
 ** Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139 USA.
 **
 ** THIS SOFTWARE IS PROVIDED AS-IS WITHOUT WARRANTY OF ANY KIND,
 ** NOT EVEN THE IMPLIED WARRANTY OF MERCHANTABILITY. THE AUTHOR
 ** OF THIS SOFTWARE, ASSUMES _NO_ RESPONSIBILITY FOR ANY
 ** CONSEQUENCE RESULTING FROM THE USE, MODIFICATION, OR
 ** REDISTRIBUTION OF THIS SOFTWARE.
 **
 */

package rachel.loader;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;

import org.apache.log4j.Logger;

import rachel.ResourceLoader;

public class FileResourceLoader implements ResourceLoader {
	static Logger Status = Logger.getLogger(FileResourceLoader.class);

	File _root;

	public FileResourceLoader(File root) {
		_root = root;
	}

	@Override
	public InputStream getResourceAsStream(String name) {
		File file = new File(_root, name);

		if (!file.exists())
			return null;

		try {
			return new FileInputStream(file);
		} catch (IOException ioex) {
			Status.error("*** failed to retrieve resource '" + name + "': "
					+ ioex.getMessage());
			return null;
		}
	}

	@Override
	public URL getResourceAsUrl(String name) {
		File file = new File(_root, name);

		if (!file.exists())
			return null;

		try {

			return file.toURI().toURL();
		} catch (MalformedURLException mex) {
			Status.error("*** failed to create URL for resource '" + name
					+ "': " + mex.getMessage());
			return null;
		}
	}
}