FileSystemResourceLoader.java

/**
 * Copyright 2013-2016 Guoqiang Chen, Shanghai, China. All rights reserved.
 *
 *   Author: Guoqiang Chen
 *    Email: subchen@gmail.com
 *   WebURL: https://github.com/subchen
 *
 * 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 jetbrick.template.loader;

import java.io.File;
import jetbrick.io.resource.FileSystemResource;
import jetbrick.io.resource.Resource;
import jetbrick.util.PathUtils;

public final class FileSystemResourceLoader extends AbstractResourceLoader {

    public FileSystemResourceLoader() {
        root = ".";
        reloadable = false;
    }

    @Override
    public Resource load(String name) {
        String path = PathUtils.concat(root, name);

        File file = new File(path).getAbsoluteFile();
        if (!file.exists()) {
            return null;
        }

        FileSystemResource resource = new FileSystemResource(file);
        resource.setRelativePathName(name); // use relative name
        return resource;
    }

}