| /* |
| * 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.tomcat.util.http.parser; |
| |
| import java.io.IOException; |
| import java.io.StringReader; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Locale; |
| |
| public class AcceptLanguage { |
| |
| private final Locale locale; |
| private final double quality; |
| |
| protected AcceptLanguage(Locale locale, double quality) { |
| this.locale = locale; |
| this.quality = quality; |
| } |
| |
| public Locale getLocale() { |
| return locale; |
| } |
| |
| public double getQuality() { |
| return quality; |
| } |
| |
| |
| public static List<AcceptLanguage> parse(StringReader input) throws IOException { |
| |
| List<AcceptLanguage> result = new ArrayList<>(); |
| |
| do { |
| // Token is broader than what is permitted in a language tag |
| // (alphanumeric + '-') but any invalid values that slip through |
| // will be caught later |
| String languageTag = HttpParser.readToken(input); |
| if (languageTag == null) { |
| // Invalid tag, skip to the next one |
| HttpParser.skipUntil(input, 0, ','); |
| continue; |
| } |
| |
| if (languageTag.length() == 0) { |
| // No more data to read |
| break; |
| } |
| |
| // See if a quality has been provided |
| double quality = 1; |
| SkipResult lookForSemiColon = HttpParser.skipConstant(input, ";"); |
| if (lookForSemiColon == SkipResult.FOUND) { |
| quality = HttpParser.readWeight(input, ','); |
| } |
| |
| if (quality > 0) { |
| result.add(new AcceptLanguage(Locale.forLanguageTag(languageTag), quality)); |
| } |
| } while (true); |
| |
| return result; |
| } |
| } |