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    
015    package org.apache.hivemind.util;
016    
017    import java.io.File;
018    import java.net.MalformedURLException;
019    import java.net.URL;
020    import java.util.Locale;
021    
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    import 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     */
032    public 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    }