| /* |
| * 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.johnzon.mapper.converter; |
| |
| import org.apache.johnzon.mapper.TypeAwareAdapter; |
| import org.apache.johnzon.mapper.internal.AdapterKey; |
| |
| import java.lang.reflect.Type; |
| import java.util.Locale; |
| |
| // from [lang] |
| public class LocaleConverter implements TypeAwareAdapter<Locale, String> { |
| private final AdapterKey key = new AdapterKey(Locale.class, String.class); |
| |
| @Override |
| public Type getTo() { |
| return key.getTo(); |
| } |
| |
| @Override |
| public Type getFrom() { |
| return key.getFrom(); |
| } |
| |
| @Override |
| public AdapterKey getKey() { |
| return key; |
| } |
| |
| @Override |
| public String from(final Locale instance) { |
| return instance.toString(); |
| } |
| |
| @Override |
| public Locale to(final String locale) { |
| if (locale == null) { |
| return null; |
| } |
| final int len = locale.length(); |
| if (len != 2 && len != 5 && len < 7) { |
| throw new IllegalArgumentException("Invalid locale format: " + locale); |
| } |
| final char ch0 = locale.charAt(0); |
| final char ch1 = locale.charAt(1); |
| if (ch0 < 'a' || ch0 > 'z' || ch1 < 'a' || ch1 > 'z') { |
| throw new IllegalArgumentException("Invalid locale format: " + locale); |
| } |
| if (len == 2) { |
| return new Locale(locale, ""); |
| } |
| if (locale.charAt(2) != '_') { |
| throw new IllegalArgumentException("Invalid locale format: " + locale); |
| } |
| final char ch3 = locale.charAt(3); |
| if (ch3 == '_') { |
| return new Locale(locale.substring(0, 2), "", locale.substring(4)); |
| } |
| final char ch4 = locale.charAt(4); |
| if (ch3 < 'A' || ch3 > 'Z' || ch4 < 'A' || ch4 > 'Z') { |
| throw new IllegalArgumentException("Invalid locale format: " + locale); |
| } |
| if (len == 5) { |
| return new Locale(locale.substring(0, 2), locale.substring(3, 5)); |
| } |
| if (locale.charAt(5) != '_') { |
| throw new IllegalArgumentException("Invalid locale format: " + locale); |
| } |
| return new Locale(locale.substring(0, 2), locale.substring(3, 5), locale.substring(6)); |
| } |
| } |