01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package org.codehaus.griffon.runtime.util;
19
20 import griffon.util.CompositeResourceBundle;
21 import griffon.util.CompositeResourceBundleBuilder;
22
23 import javax.annotation.Nonnull;
24 import java.util.ArrayList;
25 import java.util.Collection;
26 import java.util.List;
27 import java.util.Locale;
28 import java.util.ResourceBundle;
29
30 import static griffon.util.GriffonNameUtils.requireNonBlank;
31 import static java.util.Objects.requireNonNull;
32
33 /**
34 * @author Andres Almiray
35 * @since 2.0.0
36 */
37 public abstract class AbstractCompositeResourceBundleBuilder implements CompositeResourceBundleBuilder {
38 protected static final String ERROR_BASENAME_BLANK = "Argument 'basename' must not be blank";
39 protected static final String ERROR_LOCALE_NULL = "Argument 'locale' must not be null";
40
41 @Override
42 @Nonnull
43 public ResourceBundle create(@Nonnull String basename) {
44 return create(basename, Locale.getDefault());
45 }
46
47 @Override
48 @Nonnull
49 public ResourceBundle create(@Nonnull String basename, @Nonnull Locale locale) {
50 requireNonBlank(basename, ERROR_BASENAME_BLANK);
51 requireNonNull(locale, ERROR_LOCALE_NULL);
52
53 initialize();
54
55 String[] combinations = {
56 locale.getLanguage() + "_" + locale.getCountry() + "_" + locale.getVariant(),
57 locale.getLanguage() + "_" + locale.getCountry(),
58 locale.getLanguage()
59 };
60
61 basename = basename.replace('.', '/');
62 List<ResourceBundle> bundles = new ArrayList<>();
63 for (String suffix : combinations) {
64 if (suffix.endsWith("_")) { continue; }
65 bundles.addAll(loadBundlesFor(basename + "_" + suffix));
66 }
67 bundles.addAll(loadBundlesFor(basename));
68 if (bundles.isEmpty()) {
69 throw new IllegalArgumentException("There are no ResourceBundle resources matching " + basename);
70 }
71
72 return new CompositeResourceBundle(bundles);
73 }
74
75 protected abstract void initialize();
76
77 @Nonnull
78 protected abstract Collection<ResourceBundle> loadBundlesFor(@Nonnull String basename);
79 }
|