1 /*
   2  * reserved comment block
   3  * DO NOT REMOVE OR ALTER!
   4  */
   5 /*
   6  * Copyright 2005 The Apache Software Foundation.
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  */
  20 package com.sun.org.apache.xerces.internal.xpointer;
  21 
  22 import java.util.Locale;
  23 import java.util.MissingResourceException;
  24 import java.util.ResourceBundle;
  25 import java.util.PropertyResourceBundle;
  26 import com.sun.org.apache.xerces.internal.util.MessageFormatter;
  27 import com.sun.org.apache.xerces.internal.utils.SecuritySupport;
  28 
  29 /**
  30  * XPointerMessageFormatter provides error messages for the XPointer Framework
  31  * and element() Scheme Recommendations.
  32  *
  33  * @xerces.internal
  34  *
  35  * @version $Id: XPointerMessageFormatter.java,v 1.5 2010-11-01 04:40:26 joehw Exp $
  36  */
  37 class XPointerMessageFormatter implements MessageFormatter {
  38 
  39     public static final String XPOINTER_DOMAIN = "http://www.w3.org/TR/XPTR";
  40 
  41     // private objects to cache the locale and resource bundle
  42     private Locale fLocale = null;
  43 
  44     private ResourceBundle fResourceBundle = null;
  45 
  46     /**
  47      * Formats a message with the specified arguments using the given locale
  48      * information.
  49      *
  50      * @param locale
  51      *            The locale of the message.
  52      * @param key
  53      *            The message key.
  54      * @param arguments
  55      *            The message replacement text arguments. The order of the
  56      *            arguments must match that of the placeholders in the actual
  57      *            message.
  58      *
  59      * @return Returns the formatted message.
  60      *
  61      * @throws MissingResourceException
  62      *             Thrown if the message with the specified key cannot be found.
  63      */
  64     public String formatMessage(Locale locale, String key, Object[] arguments)
  65             throws MissingResourceException {
  66 
  67         if (fResourceBundle == null || locale != fLocale) {
  68             if (locale != null) {
  69                 fResourceBundle = SecuritySupport.getResourceBundle(
  70                         "com.sun.org.apache.xerces.internal.impl.msg.XPointerMessages", locale);
  71                 // memorize the most-recent locale
  72                 fLocale = locale;
  73             }
  74             if (fResourceBundle == null)
  75                 fResourceBundle = SecuritySupport.getResourceBundle(
  76                         "com.sun.org.apache.xerces.internal.impl.msg.XPointerMessages");
  77         }
  78 
  79         String msg = fResourceBundle.getString(key);
  80         if (arguments != null) {
  81             try {
  82                 msg = java.text.MessageFormat.format(msg, arguments);
  83             } catch (Exception e) {
  84                 msg = fResourceBundle.getString("FormatFailed");
  85                 msg += " " + fResourceBundle.getString(key);
  86             }
  87         }
  88 
  89         if (msg == null) {
  90             msg = fResourceBundle.getString("BadMessageKey");
  91             throw new MissingResourceException(msg,
  92                     "com.sun.org.apache.xerces.internal.impl.msg.XPointerMessages", key);
  93         }
  94 
  95         return msg;
  96     }
  97 }