| /* |
| * 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.unomi.rest; |
| |
| import org.apache.unomi.api.PluginType; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| import org.osgi.framework.wiring.BundleWiring; |
| |
| import java.util.Locale; |
| import java.util.MissingResourceException; |
| import java.util.ResourceBundle; |
| import java.util.regex.Pattern; |
| |
| public class ResourceBundleHelper { |
| |
| private static final Pattern COMMA = Pattern.compile(",", Pattern.LITERAL); |
| |
| private static final String RESOURCE_BUNDLE = "messages"; |
| |
| private BundleContext bundleContext; |
| |
| private ResourceBundle getBundle(String lang, Bundle bundle, ClassLoader loader) { |
| Locale locale = getLocale(lang); |
| try { |
| ResourceBundle resourceBundle = ResourceBundle.getBundle(RESOURCE_BUNDLE, locale, loader); |
| if (resourceBundle != null && locale.equals(resourceBundle.getLocale())) { |
| return resourceBundle; |
| } |
| } catch (MissingResourceException e) { |
| // continue with next language |
| } |
| |
| if (locale.getCountry().length() > 0) { |
| // try the locale without the country |
| return getBundle(locale.getLanguage(), bundle, loader); |
| } |
| |
| return null; |
| } |
| |
| private Locale getLocale(String lang) { |
| int i = lang.indexOf(';'); |
| if (i > -1) { |
| lang = lang.substring(0, i); |
| } |
| return Locale.forLanguageTag(lang); |
| } |
| |
| public ResourceBundle getResourceBundle(PluginType object, String language) { |
| ResourceBundle resourceBundle = null; |
| |
| Bundle bundle = bundleContext.getBundle(object.getPluginId()); |
| ClassLoader loader = bundle.adapt(BundleWiring.class).getClassLoader(); |
| |
| if (language != null) { |
| if (language.indexOf(',') != -1) { |
| String[] langs = COMMA.split(language); |
| for (String lang : langs) { |
| resourceBundle = getBundle(lang, bundle, loader); |
| if (resourceBundle != null) { |
| break; |
| } |
| } |
| } else { |
| resourceBundle = getBundle(language, bundle, loader); |
| } |
| } |
| if (resourceBundle == null) { |
| try { |
| return ResourceBundle.getBundle(RESOURCE_BUNDLE, Locale.ENGLISH, loader); |
| } catch (MissingResourceException e) { |
| // ignore |
| } |
| } |
| |
| return resourceBundle; |
| } |
| |
| public String getResourceBundleValue(ResourceBundle bundle, String nameKey) { |
| try { |
| if (bundle != null) { |
| return bundle.getString(nameKey); |
| } |
| } catch (MissingResourceException e) { |
| // Continue |
| } |
| return "???" + nameKey + "???"; |
| } |
| |
| public void setBundleContext(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| } |