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 
  26 package build.tools.cldrconverter;
  27 
  28 import 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  */
  34 enum 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 }