01 /*
02 * Copyright 2008-2016 the original author or authors.
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package griffon.core.formatters;
17
18 import javax.annotation.Nullable;
19 import java.util.Locale;
20
21 import static griffon.util.GriffonApplicationUtils.parseLocale;
22 import static griffon.util.GriffonNameUtils.isBlank;
23
24 /**
25 * @author Andres Almiray
26 * @since 2.5.0
27 */
28 public class LocaleFormatter extends AbstractFormatter<Locale> {
29 @Nullable
30 public String format(@Nullable Locale locale) {
31 if (locale == null) return null;
32 StringBuilder b = new StringBuilder();
33 b.append(locale.getLanguage());
34 if (!isBlank(locale.getCountry())) {
35 b.append("_").append(locale.getCountry());
36 if (!isBlank(locale.getVariant())) {
37 b.append("_").append(locale.getVariant());
38 }
39 }
40
41 return b.toString();
42 }
43
44 @Nullable
45 @Override
46 public Locale parse(@Nullable String str) throws ParseException {
47 return parseLocale(str);
48 }
49 }
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