1/*
2 * Copyright (c) 2012, 2015, 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 build.tools.cldrconverter;
27
28import java.util.Locale;
29
30/**
31 * Constants for the Calendars supported by JRE.
32 * Note that "GENERIC" calendar data will NOT be extracted to JDK's ResourceBundles.
33 */
34enum CalendarType {
35    GENERIC, GREGORIAN("gregory"), BUDDHIST, JAPANESE, ROC,
36    ISLAMIC, ISLAMIC_CIVIL("islamic-civil"), ISLAMIC_UMALQURA("islamic-umalqura");
37
38    private static final int[][] ERA_DATA = {
39        // start index, array length
40        {0,   2},   // generic
41        {0,   2},   // gregorian
42        {0,   1},   // buddhist
43        {232, 4},   // japanese (eras from Meiji)
44        {0,   2},   // roc (Minguo)
45        {0,   1},   // islamic (Hijrah)
46        {0,   1},   // islamic-civil (same as islamic)
47        {0,   1},   // islamic-umalqura
48    };
49
50    private final String lname; // lowercase name
51    private final String uname; // unicode key name (e.g., "gregory" for GREGORIAN)
52
53    private CalendarType() {
54        this(null);
55    }
56
57    private CalendarType(String uname) {
58        String lname = name().toLowerCase(Locale.ROOT);
59        if (lname.startsWith("islamic_")) {
60            lname = lname.replace('_', '-');
61        }
62        this.lname = lname;
63        this.uname = (uname != null) ? uname : lname;
64    }
65
66    String lname() {
67        return lname;
68    }
69
70    String uname() {
71        return uname;
72    }
73
74    String keyElementName() {
75        return (this == GREGORIAN) ? "" : lname + ".";
76    }
77
78    int normalizeEraIndex(int index) {
79        index -= ERA_DATA[ordinal()][0];
80        if (index >= ERA_DATA[ordinal()][1]) {
81            index = -1;
82        }
83        return index;
84    }
85
86    int getEraLength(String name) {
87        return ERA_DATA[ordinal()][1];
88    }
89
90    static CalendarType forName(String name) {
91        for (CalendarType type : values()) {
92            if (type.lname.equals(name) || type.uname.equals(name)) {
93                return type;
94            }
95        }
96        return null;
97    }
98}
99