Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ResourceHelper |
|
| 1.625;1.625 |
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 | * http://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 | package org.apache.commons.cli2.resource; | |
18 | ||
19 | import java.text.MessageFormat; | |
20 | ||
21 | import java.util.Locale; | |
22 | import java.util.MissingResourceException; | |
23 | import java.util.ResourceBundle; | |
24 | ||
25 | /** | |
26 | * A utility class used to provide internationalisation support. | |
27 | * | |
28 | * @author John Keyes | |
29 | */ | |
30 | public class ResourceHelper { | |
31 | /** system property */ | |
32 | private static final String PROP_LOCALE = "org.apache.commons.cli2.resource.bundle"; | |
33 | ||
34 | /** default package name */ | |
35 | private static final String DEFAULT_BUNDLE = | |
36 | "org.apache.commons.cli2.resource.CLIMessageBundle_en_US"; | |
37 | private static ResourceHelper helper; | |
38 | ||
39 | /** resource bundle */ | |
40 | private ResourceBundle bundle; | |
41 | ||
42 | private String prop; | |
43 | ||
44 | /** | |
45 | * Create a new ResourceHelper for the current locale. | |
46 | */ | |
47 | 145 | private ResourceHelper() { |
48 | 145 | String bundleName = System.getProperty(PROP_LOCALE); |
49 | ||
50 | 145 | if (bundleName == null) { |
51 | 142 | bundleName = DEFAULT_BUNDLE; |
52 | } | |
53 | ||
54 | 145 | this.prop = bundleName; |
55 | ||
56 | 145 | int firstUnderscore = bundleName.indexOf('_'); |
57 | 145 | int secondUnderscore = bundleName.indexOf('_', firstUnderscore + 1); |
58 | ||
59 | Locale locale; | |
60 | 145 | if (firstUnderscore != -1) { |
61 | 143 | String language = bundleName.substring(firstUnderscore + 1, secondUnderscore); |
62 | 143 | String country = bundleName.substring(secondUnderscore + 1); |
63 | 143 | locale = new Locale(language, country); |
64 | 143 | } |
65 | else { | |
66 | 2 | locale = Locale.getDefault(); |
67 | } | |
68 | // initialize the bundle | |
69 | try { | |
70 | 145 | bundle = ResourceBundle.getBundle(bundleName, locale); |
71 | 2 | } catch (MissingResourceException exp) { |
72 | 2 | bundle = ResourceBundle.getBundle(DEFAULT_BUNDLE, locale); |
73 | 143 | } |
74 | 145 | } |
75 | ||
76 | public String getBundleName() { | |
77 | 369 | return this.prop; |
78 | } | |
79 | ||
80 | /** | |
81 | * Gets the ResourceHelper appropriate to the current locale. | |
82 | * @return a ResourceHelper | |
83 | */ | |
84 | public static ResourceHelper getResourceHelper() { | |
85 | 370 | String bundleName = System.getProperty(PROP_LOCALE); |
86 | 370 | if (helper == null || !helper.getBundleName().equals(bundleName)) { |
87 | 145 | helper = new ResourceHelper(); |
88 | } | |
89 | ||
90 | 370 | return helper; |
91 | } | |
92 | ||
93 | /** | |
94 | * Returns the message for the specified key. | |
95 | * | |
96 | * @param key the unique identifier of the message | |
97 | * @return String the formatted String | |
98 | */ | |
99 | public String getMessage(final String key) { | |
100 | 125 | return getMessage(key, new Object[] { }); |
101 | } | |
102 | ||
103 | /** | |
104 | * Returns the message for the specified key and argument. | |
105 | * | |
106 | * @param key the unique identifier of the message | |
107 | * @param value the argument value | |
108 | * @return String the formatted String | |
109 | */ | |
110 | public String getMessage(final String key, | |
111 | final Object value) { | |
112 | 43 | return getMessage(key, new Object[] { value }); |
113 | } | |
114 | ||
115 | /** | |
116 | * Returns the message for the specified key and arguments. | |
117 | * | |
118 | * @param key the unique identifier of the message | |
119 | * @param value1 an argument value | |
120 | * @param value2 an argument value | |
121 | * @return String the formatted String | |
122 | */ | |
123 | public String getMessage(final String key, | |
124 | final Object value1, | |
125 | final Object value2) { | |
126 | 3 | return getMessage(key, new Object[] { value1, value2 }); |
127 | } | |
128 | ||
129 | /** | |
130 | * Returns the message for the specified key and arguments. | |
131 | * | |
132 | * @param key the unique identifier of the message | |
133 | * @param value1 an argument value | |
134 | * @param value2 an argument value | |
135 | * @param value3 an argument value | |
136 | * | |
137 | * @return String the formatted String | |
138 | */ | |
139 | public String getMessage(final String key, | |
140 | final Object value1, | |
141 | final Object value2, | |
142 | final Object value3) { | |
143 | 1 | return getMessage(key, new Object[] { value1, value2, value3 }); |
144 | } | |
145 | ||
146 | /** | |
147 | * Returns the message for the specified key and arguments. | |
148 | * | |
149 | * @param key the unique identifier of the message | |
150 | * @param values argument values | |
151 | * @return String the formatted String | |
152 | */ | |
153 | public String getMessage(final String key, | |
154 | final Object[] values) { | |
155 | 182 | final String msgFormatStr = bundle.getString(key); |
156 | 182 | final MessageFormat msgFormat = new MessageFormat(msgFormatStr); |
157 | ||
158 | 182 | return msgFormat.format(values); |
159 | } | |
160 | } |