1 /*
2 * This file is part of hyphenType. hyphenType is free software: you can
3 * redistribute it and/or modify it under the terms of the GNU General Public
4 * License as published by the Free Software Foundation, either version 3 of the
5 * License, or (at your option) any later version. hyphenType is distributed in
6 * the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the
7 * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
8 * the GNU General Public License for more details. You should have received a
9 * copy of the GNU General Public License along with hyphenType. If not, see
10 * <http://www.gnu.org/licenses/>.
11 */
12 package org.hyphenType.util.resourcebundles;
13
14 import java.util.HashMap;
15 import java.util.Map;
16 import java.util.ResourceBundle;
17 import java.util.regex.Matcher;
18
19 /**
20 * @author Aurelio Akira M. Matsui
21 */
22 public final class AliasResourceBundle {
23
24 /**
25 * Makes is a utility class.
26 */
27 private AliasResourceBundle() {
28 }
29
30 public static final String ALIAS_DECLARATION_PREFIX = "alias.";
31
32 /**
33 * Takes a resource bundle and creates a new one with the aliases replaced.
34 * Will search for properties in the format "alias.<i>name</i>", where
35 * <i>name</i> is the name of the alias. Whenever an alias is found,
36 * replaces this alias as a prefix, whenever the prefix is found as the
37 * start of any property. For example, takes the following
38 *
39 * <pre>
40 * alias.x = blablablablablablablabla
41 * alias.y = yyyy
42 * ${x} = A
43 * ${x}.b = Z
44 * ${x}.${y} = W
45 * </pre>
46 *
47 * and converts into the following:
48 *
49 * <pre>
50 * blablablablablablablabla = A
51 * blablablablablablablabla.b = Z
52 * blablablablablablablabla.yyyy = W
53 * </pre>
54 *
55 * @param rb
56 * The resource bundle to convert.
57 * @return The converted resource bundle.
58 */
59 public static ResourceBundle convert(final ResourceBundle rb) {
60
61 Map<String, String> aliases = new HashMap<String, String>();
62 for (String key : rb.keySet()) {
63 if (key.startsWith(ALIAS_DECLARATION_PREFIX)) {
64 aliases.put(key.substring(ALIAS_DECLARATION_PREFIX.length()), rb.getString(key));
65 }
66 }
67
68 Map<String, String> newRBMap = new HashMap<String, String>();
69 for (String key : rb.keySet()) {
70 if (!key.startsWith(ALIAS_DECLARATION_PREFIX)) {
71 String newKey = key;
72 for (String alias : aliases.keySet()) {
73 if (newKey.contains("${" + alias + "}")) {
74 newKey = newKey.replaceAll("\\$\\{" + alias + "\\}", Matcher.quoteReplacement(aliases.get(alias)));
75 }
76 }
77 newRBMap.put(newKey, rb.getString(key));
78 }
79 }
80
81 return new ConfigurableListResourceBundle(newRBMap);
82 }
83 }