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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.transform;
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 LocalizedFFTFormats implements Localizable {
46  
47      /** FIRST_ELEMENT_NOT_ZERO. */
48      FIRST_ELEMENT_NOT_ZERO("first element is not 0: {0}"),
49  
50      /** NOT_POWER_OF_TWO. */
51      NOT_POWER_OF_TWO("{0} is not a power of 2"),
52  
53      /** NOT_POWER_OF_TWO_CONSIDER_PADDING. */
54      NOT_POWER_OF_TWO_CONSIDER_PADDING("{0} is not a power of 2, consider padding for fix"),
55  
56      /** NOT_POWER_OF_TWO_PLUS_ONE. */
57      NOT_POWER_OF_TWO_PLUS_ONE("{0} is not a power of 2 plus one");
58  
59      /** Source English format. */
60      private final String sourceFormat;
61  
62      /** Simple constructor.
63       * @param sourceFormat source English format to use when no
64       * localized version is available
65       */
66      LocalizedFFTFormats(final String sourceFormat) {
67          this.sourceFormat = sourceFormat;
68      }
69  
70      /** {@inheritDoc} */
71      @Override
72      public String getSourceString() {
73          return sourceFormat;
74      }
75  
76      /** {@inheritDoc} */
77      @Override
78      public String getLocalizedString(final Locale locale) {
79          try {
80              final String path = LocalizedFFTFormats.class.getName().replaceAll("\\.", "/");
81              ResourceBundle bundle =
82                      ResourceBundle.getBundle("assets/" + path, locale, new UTF8Control());
83              if (bundle.getLocale().getLanguage().equals(locale.getLanguage())) {
84                  final String translated = bundle.getString(name());
85                  if ((translated != null) &&
86                      (translated.length() > 0) &&
87                      (!translated.toLowerCase(locale).contains("missing translation"))) {
88                      // the value of the resource is the translated format
89                      return translated;
90                  }
91              }
92  
93          } catch (MissingResourceException mre) { // NOPMD
94              // do nothing here
95          }
96  
97          // either the locale is not supported or the resource is unknown
98          // don't translate and fall back to using the source format
99          return sourceFormat;
100 
101     }
102 
103 }