| // Copyright 2004 The Apache Software Foundation |
| // |
| // 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 org.apache.tapestry.util; |
| |
| import java.util.Locale; |
| |
| import org.apache.tapestry.IResourceResolver; |
| |
| /** |
| * |
| * Searches for a localization of a |
| * particular resource in the classpath (using |
| * a {@link org.apache.tapestry.IResourceResolver}. |
| * |
| * |
| * @author Howard Lewis Ship |
| * @version $Id$ |
| * @since 3.0 |
| * |
| **/ |
| |
| public class LocalizedResourceFinder |
| { |
| private IResourceResolver _resolver; |
| |
| public LocalizedResourceFinder(IResourceResolver resolver) |
| { |
| _resolver = resolver; |
| } |
| |
| /** |
| * Resolves the resource, returning a path representing |
| * the closest match (with respect to the provided locale). |
| * Returns null if no match. |
| * |
| * <p>The provided path is split into a base path |
| * and a suffix (at the last period character). The locale |
| * will provide different suffixes to the base path |
| * and the first match is returned. |
| * |
| **/ |
| |
| public LocalizedResource resolve(String resourcePath, Locale locale) |
| { |
| int dotx = resourcePath.lastIndexOf('.'); |
| String basePath = resourcePath.substring(0, dotx); |
| String suffix = resourcePath.substring(dotx); |
| |
| LocalizedNameGenerator generator = new LocalizedNameGenerator(basePath, locale, suffix); |
| |
| while (generator.more()) |
| { |
| String candidatePath = generator.next(); |
| |
| if (_resolver.getResource(candidatePath) != null) |
| return new LocalizedResource(candidatePath, generator.getCurrentLocale()); |
| } |
| |
| return null; |
| } |
| } |