/** * Copyright (C) 2015 The Gravitee team (http://gravitee.io) * * 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 io.gravitee.rest.api.management.rest.utils; import java.util.Collections; import java.util.List; import java.util.Locale; import java.util.Locale.LanguageRange; import java.util.stream.Collectors; public interface HttpHeadersUtil { public static List<String> getAcceptedLocaleNameOrderedByPriority(String acceptLanguageHeader) { if(acceptLanguageHeader == null) { return Collections.emptyList(); } return LanguageRange.parse(acceptLanguageHeader) .stream() .map(l -> Locale.forLanguageTag(l.getRange()).getLanguage()) .distinct() .collect(Collectors.toList()); } public static String getFirstAcceptedLocaleName(String acceptLanguageHeader) { if(acceptLanguageHeader == null) { return null; } return Locale.forLanguageTag(acceptLanguageHeader.split(",")[0]).getLanguage(); } }