/*
 * $Id: StrutsResourceLoader.java 471756 2006-11-06 15:01:43Z husted $
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.struts2.views.velocity;

import java.io.InputStream;

import org.apache.struts2.util.ClassLoaderUtils;
import org.apache.velocity.exception.ResourceNotFoundException;
import org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader;


/**
 * Loads resource from the Thread's context ClassLoader.
 *
 */
public class StrutsResourceLoader extends ClasspathResourceLoader {

    public synchronized InputStream getResourceStream(String name) throws ResourceNotFoundException {
        if ((name == null) || (name.length() == 0)) {
            throw new ResourceNotFoundException("No template name provided");
        }

        if (name.startsWith("/")) {
            name = name.substring(1);
        }

        try {
            return ClassLoaderUtils.getResourceAsStream(name, StrutsResourceLoader.class);
        } catch (Exception e) {
            throw new ResourceNotFoundException(e.getMessage());
        }
    }
}
