79 lines
2.5 KiB
Java
79 lines
2.5 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.tomcat.util.http.parser;
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import java.io.IOException;
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import java.io.StringReader;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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public class AcceptLanguage {
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private final Locale locale;
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private final double quality;
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protected AcceptLanguage(Locale locale, double quality) {
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this.locale = locale;
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this.quality = quality;
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}
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public Locale getLocale() {
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return locale;
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}
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public double getQuality() {
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return quality;
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}
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public static List<AcceptLanguage> parse(StringReader input) throws IOException {
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List<AcceptLanguage> result = new ArrayList<>();
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do {
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// Token is broader than what is permitted in a language tag
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// (alphanumeric + '-') but any invalid values that slip through
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// will be caught later
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String languageTag = HttpParser.readToken(input);
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if (languageTag == null) {
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// Invalid tag, skip to the next one
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HttpParser.skipUntil(input, 0, ',');
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continue;
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}
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if (languageTag.length() == 0) {
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// No more data to read
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break;
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}
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// See if a quality has been provided
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double quality = 1;
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SkipResult lookForSemiColon = HttpParser.skipConstant(input, ";");
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if (lookForSemiColon == SkipResult.FOUND) {
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quality = HttpParser.readWeight(input, ',');
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}
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if (quality > 0) {
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result.add(new AcceptLanguage(Locale.forLanguageTag(languageTag), quality));
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}
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} while (true);
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return result;
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}
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}
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