/**
* Copyright 2004-2016 Riccardo Solmi. All rights reserved.
* This file is part of the Whole Platform.
*
* The Whole Platform is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The Whole Platform is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
*/
package org.whole.lang.util;
import java.io.InputStream;
import java.net.URI;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
/**
* @author Enrico Persiani
*/
public class ResourceLoader {
private static final Map<String, ResourceLoader> resourceLoaders = new HashMap<String, ResourceLoader>();
public static ResourceLoader instance(String packageName) {
ResourceLoader resourceLoader = resourceLoaders.get(packageName);
if (resourceLoader == null) {
resourceLoader = new ResourceLoader(packageName);
resourceLoaders.put(packageName, resourceLoader);
}
return resourceLoader;
}
private final ClassLoader cl;
private final String packagePath;
private ResourceLoader(String packageName) {
cl = Thread.currentThread().getContextClassLoader();
packagePath = StringUtils.packageURIPath(packageName);
}
public URL getResource(String name) {
return cl.getResource(packagePath+"/"+name);
}
public InputStream getResourceAsStream(String name) {
try {
URI uri = new URI(name);
return uri.toURL().openStream();
} catch (Exception e) {
return cl.getResourceAsStream(packagePath+"/"+name);
}
}
}