1 /*
   2  * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.istack.internal.localization;
  27 
  28 import com.sun.istack.internal.localization.LocalizableMessageFactory.ResourceBundleSupplier;
  29 import java.text.MessageFormat;
  30 import java.util.HashMap;
  31 import java.util.Locale;
  32 import java.util.MissingResourceException;
  33 import java.util.ResourceBundle;
  34 
  35 /**
  36  * Localizes the {@link Localizable} into a message
  37  * by using a configured {@link Locale}.
  38  *
  39  * @author WS Development Team
  40  */
  41 public class Localizer {
  42 
  43     private final Locale _locale;
  44     private final HashMap _resourceBundles;
  45 
  46     public Localizer() {
  47         this(Locale.getDefault());
  48     }
  49 
  50     public Localizer(Locale l) {
  51         _locale = l;
  52         _resourceBundles = new HashMap();
  53     }
  54 
  55     public Locale getLocale() {
  56         return _locale;
  57     }
  58 
  59     public String localize(Localizable l) {
  60         String key = l.getKey();
  61         if (key == Localizable.NOT_LOCALIZABLE) {
  62             // this message is not localizable
  63             return (String) l.getArguments()[0];
  64         }
  65 
  66         String bundlename = l.getResourceBundleName();
  67 
  68         try {
  69             ResourceBundle bundle =
  70                 (ResourceBundle) _resourceBundles.get(bundlename);
  71 
  72             if (bundle == null) {
  73                 bundle = l.getResourceBundle(_locale);
  74                 if (bundle != null) {
  75                     _resourceBundles.put(bundlename, bundle);
  76                 }
  77             }
  78 
  79             if (bundle == null) {
  80                 try {
  81                     bundle = ResourceBundle.getBundle(bundlename, _locale);
  82                 } catch (MissingResourceException e) {
  83                     // work around a bug in the com.sun.enterprise.deployment.WebBundleArchivist:
  84                     //   all files with an extension different from .class (hence all the .properties files)
  85                     //   get copied to the top level directory instead of being in the package where they
  86                     //   are defined
  87                     // so, since we can't find the bundle under its proper name, we look for it under
  88                     //   the top-level package
  89 
  90                     int i = bundlename.lastIndexOf('.');
  91                     if (i != -1) {
  92                         String alternateBundleName =
  93                             bundlename.substring(i + 1);
  94                         try {
  95                             bundle =
  96                                 ResourceBundle.getBundle(
  97                                     alternateBundleName,
  98                                     _locale);
  99                         } catch (MissingResourceException e2) {
 100                             //try context classloader
 101                             try {
 102                                 bundle = ResourceBundle.getBundle(bundlename, _locale, Thread.currentThread().getContextClassLoader());
 103                             } catch (MissingResourceException e3) {
 104                                 // give up
 105                                 return getDefaultMessage(l);
 106                             }
 107 
 108                         }
 109                     }
 110                 }
 111 
 112                 _resourceBundles.put(bundlename, bundle);
 113             }
 114 
 115             if (bundle == null) {
 116                 return getDefaultMessage(l);
 117             }
 118 
 119             if (key == null)
 120                 key = "undefined";
 121 
 122             String msg;
 123             try {
 124                 msg = bundle.getString(key);
 125             } catch (MissingResourceException e) {
 126                 // notice that this may throw a MissingResourceException of its own (caught below)
 127                 msg = bundle.getString("undefined");
 128             }
 129 
 130             // localize all arguments to the given localizable object
 131             Object[] args = l.getArguments();
 132             for (int i = 0; i < args.length; ++i) {
 133                 if (args[i] instanceof Localizable)
 134                     args[i] = localize((Localizable) args[i]);
 135             }
 136 
 137             String message = MessageFormat.format(msg, args);
 138             return message;
 139 
 140         } catch (MissingResourceException e) {
 141             return getDefaultMessage(l);
 142         }
 143 
 144     }
 145 
 146     private String getDefaultMessage(Localizable l) {
 147         String key = l.getKey();
 148         Object[] args = l.getArguments();
 149         StringBuilder sb = new StringBuilder();
 150         sb.append("[failed to localize] ");
 151         sb.append(key);
 152         if (args != null) {
 153             sb.append('(');
 154             for (int i = 0; i < args.length; ++i) {
 155                 if (i != 0)
 156                     sb.append(", ");
 157                 sb.append(String.valueOf(args[i]));
 158             }
 159             sb.append(')');
 160         }
 161         return sb.toString();
 162     }
 163 }