Coverage Report - org.apache.commons.cli2.resource.ResourceHelper
 
Classes in this File Line Coverage Branch Coverage Complexity
ResourceHelper
100%
30/30
100%
8/8
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  
 }