1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.layoutlib.bridge.android;
18
19import com.android.layoutlib.bridge.impl.RenderAction;
20
21import android.icu.util.ULocale;
22
23import java.util.Locale;
24
25/**
26 * This class provides an alternate implementation for {@code java.util.Locale#toLanguageTag}
27 * which is only available after Java 6.
28 *
29 * The create tool re-writes references to the above mentioned method to this one. Hence it's
30 * imperative that this class is not deleted unless the create tool is modified.
31 */
32@SuppressWarnings("UnusedDeclaration")
33public class AndroidLocale {
34
35    public static String toLanguageTag(Locale locale)  {
36        return ULocale.forLocale(locale).toLanguageTag();
37    }
38
39    public static String adjustLanguageCode(String languageCode) {
40        String adjusted = languageCode.toLowerCase(Locale.US);
41        // Map new language codes to the obsolete language
42        // codes so the correct resource bundles will be used.
43        if (languageCode.equals("he")) {
44            adjusted = "iw";
45        } else if (languageCode.equals("id")) {
46            adjusted = "in";
47        } else if (languageCode.equals("yi")) {
48            adjusted = "ji";
49        }
50
51        return adjusted;
52    }
53
54    public static Locale forLanguageTag(String tag) {
55        return ULocale.forLanguageTag(tag).toLocale();
56    }
57
58    public static String getScript(Locale locale) {
59        return ULocale.forLocale(locale).getScript();
60    }
61
62    public static Locale getDefault() {
63        BridgeContext context = RenderAction.getCurrentContext();
64        if (context != null) {
65            Locale locale = context.getConfiguration().locale;
66            if (locale != null) {
67                return locale;
68            }
69        }
70        return Locale.getDefault();
71    }
72}
73