1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 /*
19 * This is not the original file distributed by the Apache Software Foundation
20 * It has been modified by the Hipparchus project
21 */
22 package org.hipparchus.clustering;
23
24 import java.util.Locale;
25 import java.util.MissingResourceException;
26 import java.util.ResourceBundle;
27
28 import org.hipparchus.exception.Localizable;
29 import org.hipparchus.exception.UTF8Control;
30
31 /**
32 * Enumeration for localized messages formats used in exceptions messages.
33 * <p>
34 * The constants in this enumeration represent the available
35 * formats as localized strings. These formats are intended to be
36 * localized using simple properties files, using the constant
37 * name as the key and the property value as the message format.
38 * The source English format is provided in the constants themselves
39 * to serve both as a reminder for developers to understand the parameters
40 * needed by each format, as a basis for translators to create
41 * localized properties files, and as a default format if some
42 * translation is missing.
43 * </p>
44 */
45 public enum LocalizedClusteringFormats implements Localizable {
46
47 /** EMPTY_CLUSTER_IN_K_MEANS. */
48 EMPTY_CLUSTER_IN_K_MEANS("empty cluster in k-means");
49
50 /** Source English format. */
51 private final String sourceFormat;
52
53 /** Simple constructor.
54 * @param sourceFormat source English format to use when no
55 * localized version is available
56 */
57 LocalizedClusteringFormats(final String sourceFormat) {
58 this.sourceFormat = sourceFormat;
59 }
60
61 /** {@inheritDoc} */
62 @Override
63 public String getSourceString() {
64 return sourceFormat;
65 }
66
67 /** {@inheritDoc} */
68 @Override
69 public String getLocalizedString(final Locale locale) {
70 try {
71 final String path = LocalizedClusteringFormats.class.getName().replaceAll("\\.", "/");
72 ResourceBundle bundle =
73 ResourceBundle.getBundle("assets/" + path, locale, new UTF8Control());
74 if (bundle.getLocale().getLanguage().equals(locale.getLanguage())) {
75 final String translated = bundle.getString(name());
76 if ((translated != null) &&
77 (translated.length() > 0) &&
78 (!translated.toLowerCase(locale).contains("missing translation"))) {
79 // the value of the resource is the translated format
80 return translated;
81 }
82 }
83
84 } catch (MissingResourceException mre) { // NOPMD
85 // do nothing here
86 }
87
88 // either the locale is not supported or the resource is unknown
89 // don't translate and fall back to using the source format
90 return sourceFormat;
91
92 }
93
94 }