001// Copyright 2004, 2005 The Apache Software Foundation
002//
003// Licensed under the Apache License, Version 2.0 (the "License");
004// you may not use this file except in compliance with the License.
005// You may obtain a copy of the License at
006//
007//     http://www.apache.org/licenses/LICENSE-2.0
008//
009// Unless required by applicable law or agreed to in writing, software
010// distributed under the License is distributed on an "AS IS" BASIS,
011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012// See the License for the specific language governing permissions and
013// limitations under the License.
014
015package org.apache.hivemind.util;
016
017import java.io.File;
018import java.net.MalformedURLException;
019import java.net.URL;
020import java.util.Locale;
021
022import org.apache.commons.logging.Log;
023import org.apache.commons.logging.LogFactory;
024import org.apache.hivemind.Resource;
025
026/**
027 * An implementation of {@link org.apache.hivemind.Resource} built around
028 * {@link java.io.File}.
029 *
030 * @author Howard Lewis Ship
031 */
032public class FileResource extends AbstractResource
033{
034    private static final Log LOG = LogFactory.getLog(FileResource.class);
035
036    public FileResource(String path)
037    {
038        super(path);
039    }
040
041    public FileResource(String path, Locale locale)
042    {
043        super(path, locale);
044    }
045
046    protected Resource newResource(String path)
047    {
048        return new FileResource(path);
049    }
050
051    private File getFile()
052    {
053        return new File(getPath());
054    }
055
056    public URL getResourceURL()
057    {
058        File file = getFile();
059
060        try
061        {
062            if (file == null || !file.exists())
063                return null;
064
065            return file.toURL();
066        }
067        catch (MalformedURLException ex)
068        {
069            LOG.error(UtilMessages.badFileURL(getPath(), ex), ex);
070            return null;
071        }
072    }
073
074    public Resource getLocalization(Locale locale)
075    {
076        LocalizedFileResourceFinder f = new LocalizedFileResourceFinder();
077
078        String path = getPath();
079
080        String finalPath = f.findLocalizedPath(path, locale);
081
082        if (finalPath.equals(path))
083            return this;
084
085        return newResource(finalPath);
086    }
087
088    public String toString()
089    {
090        return getPath();
091    }
092
093}