1/*
2 * Copyright (c) 1997, 2017, 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
26package com.sun.istack.internal.localization;
27
28import java.text.MessageFormat;
29import java.util.HashMap;
30import java.util.Locale;
31import java.util.MissingResourceException;
32import java.util.ResourceBundle;
33
34/**
35 * Localizes the {@link Localizable} into a message
36 * by using a configured {@link Locale}.
37 *
38 * @author WS Development Team
39 */
40public class Localizer {
41
42    private final Locale _locale;
43    private final HashMap<String, ResourceBundle> _resourceBundles;
44
45    public Localizer() {
46        this(Locale.getDefault());
47    }
48
49    public Localizer(Locale l) {
50        _locale = l;
51        _resourceBundles = new HashMap<>();
52    }
53
54    public Locale getLocale() {
55        return _locale;
56    }
57
58    public String localize(Localizable l) {
59        String key = l.getKey();
60        if (key == Localizable.NOT_LOCALIZABLE) {
61            // this message is not localizable
62            return (String) l.getArguments()[0];
63        }
64
65        String bundlename = l.getResourceBundleName();
66
67        try {
68            ResourceBundle bundle =
69                (ResourceBundle) _resourceBundles.get(bundlename);
70
71            if (bundle == null) {
72                bundle = l.getResourceBundle(_locale);
73                if (bundle != null) {
74                    _resourceBundles.put(bundlename, bundle);
75                }
76            }
77
78            if (bundle == null) {
79                try {
80                    bundle = ResourceBundle.getBundle(bundlename, _locale);
81                } catch (MissingResourceException e) {
82                    // work around a bug in the com.sun.enterprise.deployment.WebBundleArchivist:
83                    //   all files with an extension different from .class (hence all the .properties files)
84                    //   get copied to the top level directory instead of being in the package where they
85                    //   are defined
86                    // so, since we can't find the bundle under its proper name, we look for it under
87                    //   the top-level package
88
89                    int i = bundlename.lastIndexOf('.');
90                    if (i != -1) {
91                        String alternateBundleName =
92                            bundlename.substring(i + 1);
93                        try {
94                            bundle =
95                                ResourceBundle.getBundle(
96                                    alternateBundleName,
97                                    _locale);
98                        } catch (MissingResourceException e2) {
99                            //try context classloader
100                            try {
101                                bundle = ResourceBundle.getBundle(bundlename, _locale, Thread.currentThread().getContextClassLoader());
102                            } catch (MissingResourceException e3) {
103                                // give up
104                                return getDefaultMessage(l);
105                            }
106
107                        }
108                    }
109                }
110
111                _resourceBundles.put(bundlename, bundle);
112            }
113
114            if (bundle == null) {
115                return getDefaultMessage(l);
116            }
117
118            if (key == null)
119                key = "undefined";
120
121            String msg;
122            try {
123                msg = bundle.getString(key);
124            } catch (MissingResourceException e) {
125                // notice that this may throw a MissingResourceException of its own (caught below)
126                msg = bundle.getString("undefined");
127            }
128
129            // localize all arguments to the given localizable object
130            Object[] args = l.getArguments();
131            for (int i = 0; i < args.length; ++i) {
132                if (args[i] instanceof Localizable)
133                    args[i] = localize((Localizable) args[i]);
134            }
135
136            String message = MessageFormat.format(msg, args);
137            return message;
138
139        } catch (MissingResourceException e) {
140            return getDefaultMessage(l);
141        }
142
143    }
144
145    private String getDefaultMessage(Localizable l) {
146        String key = l.getKey();
147        Object[] args = l.getArguments();
148        StringBuilder sb = new StringBuilder();
149        sb.append("[failed to localize] ");
150        sb.append(key);
151        if (args != null) {
152            sb.append('(');
153            for (int i = 0; i < args.length; ++i) {
154                if (i != 0)
155                    sb.append(", ");
156                sb.append(String.valueOf(args[i]));
157            }
158            sb.append(')');
159        }
160        return sb.toString();
161    }
162}
163