| /******************************************************************************* |
| * 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.sling.scripting.sightly.impl.engine.extension; |
| |
| import java.util.Enumeration; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.ResourceBundle; |
| |
| import javax.script.Bindings; |
| |
| import org.apache.commons.lang3.LocaleUtils; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.sling.api.SlingHttpServletRequest; |
| import org.apache.sling.api.scripting.SlingScriptHelper; |
| import org.apache.sling.i18n.ResourceBundleProvider; |
| import org.apache.sling.scripting.sightly.compiler.RuntimeFunction; |
| import org.apache.sling.scripting.sightly.extension.RuntimeExtension; |
| import org.apache.sling.scripting.sightly.impl.utils.BindingsUtils; |
| import org.apache.sling.scripting.sightly.render.RenderContext; |
| import org.apache.sling.scripting.sightly.render.RuntimeObjectModel; |
| import org.osgi.service.component.annotations.Component; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Component( |
| service = RuntimeExtension.class, |
| property = { |
| RuntimeExtension.NAME + "=" + RuntimeFunction.I18N |
| } |
| ) |
| public class I18nRuntimeExtension implements RuntimeExtension { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(I18nRuntimeExtension.class); |
| |
| @Override |
| public Object call(final RenderContext renderContext, Object... arguments) { |
| ExtensionUtils.checkArgumentCount(RuntimeFunction.I18N, arguments, 2); |
| RuntimeObjectModel runtimeObjectModel = renderContext.getObjectModel(); |
| String text = runtimeObjectModel.toString(arguments[0]); |
| Map<String, Object> options = (Map<String, Object>) arguments[1]; |
| String locale = runtimeObjectModel.toString(options.get("locale")); |
| String hint = runtimeObjectModel.toString(options.get("hint")); |
| String basename = runtimeObjectModel.toString(options.get("basename")); |
| final Bindings bindings = renderContext.getBindings(); |
| return get(bindings, text, locale, basename, hint); |
| } |
| |
| private String get(final Bindings bindings, String text, String locale, String basename, String hint) { |
| |
| final SlingScriptHelper slingScriptHelper = BindingsUtils.getHelper(bindings); |
| final SlingHttpServletRequest request = BindingsUtils.getRequest(bindings); |
| final ResourceBundleProvider resourceBundleProvider = slingScriptHelper.getService(ResourceBundleProvider.class); |
| if (resourceBundleProvider != null) { |
| String key = text; |
| if (StringUtils.isNotEmpty(hint)) { |
| key += " ((" + hint + "))"; |
| } |
| if (StringUtils.isEmpty(locale)) { |
| Enumeration<Locale> requestLocales = request.getLocales(); |
| while (requestLocales.hasMoreElements()) { |
| Locale l = requestLocales.nextElement(); |
| String translation = getTranslation(resourceBundleProvider, basename, key, l); |
| if (translation != null) { |
| return translation; |
| } |
| } |
| } else { |
| try { |
| Locale l = LocaleUtils.toLocale(locale); |
| String translation = getTranslation(resourceBundleProvider, basename, key, l); |
| if (translation != null) { |
| return translation; |
| } |
| } catch (IllegalArgumentException e) { |
| LOG.warn("Invalid locale detected: {}.", locale); |
| return text; |
| } |
| |
| } |
| } |
| LOG.warn("No translation found for string '{}' using expression provided locale '{}' or default locale '{}'", |
| text, locale, request.getLocale().getLanguage()); |
| return text; |
| } |
| |
| private String getTranslation(ResourceBundleProvider resourceBundleProvider, String basename, String key, Locale locale) { |
| ResourceBundle resourceBundle; |
| if (StringUtils.isNotEmpty(basename)) { |
| resourceBundle = resourceBundleProvider.getResourceBundle(basename, locale); |
| } else { |
| resourceBundle = resourceBundleProvider.getResourceBundle(locale); |
| } |
| if (resourceBundle != null && resourceBundle.containsKey(key)) { |
| return resourceBundle.getString(key); |
| } |
| return null; |
| } |
| } |