1 // © 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
3 /*
4 *******************************************************************************
5 * Copyright (C) 2003 - 2013, International Business Machines Corporation and
6 * others. All Rights Reserved.
7 *******************************************************************************
8 */
9
10 #include "unicode/utypes.h"
11
12 #if !UCONFIG_NO_FORMATTING
13
14 #include "umutex.h"
15 #include "coptccal.h"
16 #include "cecal.h"
17 #include <float.h>
18
19 U_NAMESPACE_BEGIN
20
21 UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CopticCalendar)
22
23 static const int32_t COPTIC_JD_EPOCH_OFFSET = 1824665;
24
25 //-------------------------------------------------------------------------
26 // Constructors...
27 //-------------------------------------------------------------------------
28
CopticCalendar(const Locale & aLocale,UErrorCode & success)29 CopticCalendar::CopticCalendar(const Locale& aLocale, UErrorCode& success)
30 : CECalendar(aLocale, success)
31 {
32 }
33
CopticCalendar(const CopticCalendar & other)34 CopticCalendar::CopticCalendar (const CopticCalendar& other)
35 : CECalendar(other)
36 {
37 }
38
~CopticCalendar()39 CopticCalendar::~CopticCalendar()
40 {
41 }
42
43 CopticCalendar*
clone() const44 CopticCalendar::clone() const
45 {
46 return new CopticCalendar(*this);
47 }
48
49 const char*
getType() const50 CopticCalendar::getType() const
51 {
52 return "coptic";
53 }
54
55 //-------------------------------------------------------------------------
56 // Calendar framework
57 //-------------------------------------------------------------------------
58
59 int32_t
handleGetExtendedYear()60 CopticCalendar::handleGetExtendedYear()
61 {
62 int32_t eyear;
63 if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
64 eyear = internalGet(UCAL_EXTENDED_YEAR, 1); // Default to year 1
65 } else {
66 // The year defaults to the epoch start, the era to CE
67 int32_t era = internalGet(UCAL_ERA, CE);
68 if (era == BCE) {
69 eyear = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
70 } else {
71 eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
72 }
73 }
74 return eyear;
75 }
76
77 void
handleComputeFields(int32_t julianDay,UErrorCode &)78 CopticCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
79 {
80 int32_t eyear, month, day, era, year;
81 jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
82
83 if (eyear <= 0) {
84 era = BCE;
85 year = 1 - eyear;
86 } else {
87 era = CE;
88 year = eyear;
89 }
90
91 internalSet(UCAL_EXTENDED_YEAR, eyear);
92 internalSet(UCAL_ERA, era);
93 internalSet(UCAL_YEAR, year);
94 internalSet(UCAL_MONTH, month);
95 internalSet(UCAL_DATE, day);
96 internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
97 }
98
99 /**
100 * The system maintains a static default century start date and Year. They are
101 * initialized the first time they are used. Once the system default century date
102 * and year are set, they do not change.
103 */
104 static UDate gSystemDefaultCenturyStart = DBL_MIN;
105 static int32_t gSystemDefaultCenturyStartYear = -1;
106 static icu::UInitOnce gSystemDefaultCenturyInit = U_INITONCE_INITIALIZER;
107
108
initializeSystemDefaultCentury()109 static void U_CALLCONV initializeSystemDefaultCentury() {
110 UErrorCode status = U_ZERO_ERROR;
111 CopticCalendar calendar(Locale("@calendar=coptic"), status);
112 if (U_SUCCESS(status)) {
113 calendar.setTime(Calendar::getNow(), status);
114 calendar.add(UCAL_YEAR, -80, status);
115 gSystemDefaultCenturyStart = calendar.getTime(status);
116 gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
117 }
118 // We have no recourse upon failure unless we want to propagate the failure
119 // out.
120 }
121
122 UDate
defaultCenturyStart() const123 CopticCalendar::defaultCenturyStart() const
124 {
125 // lazy-evaluate systemDefaultCenturyStart
126 umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
127 return gSystemDefaultCenturyStart;
128 }
129
130 int32_t
defaultCenturyStartYear() const131 CopticCalendar::defaultCenturyStartYear() const
132 {
133 // lazy-evaluate systemDefaultCenturyStart
134 umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
135 return gSystemDefaultCenturyStartYear;
136 }
137
138
139 int32_t
getJDEpochOffset() const140 CopticCalendar::getJDEpochOffset() const
141 {
142 return COPTIC_JD_EPOCH_OFFSET;
143 }
144
145
146 #if 0
147 // We do not want to introduce this API in ICU4C.
148 // It was accidentally introduced in ICU4J as a public API.
149
150 //-------------------------------------------------------------------------
151 // Calendar system Conversion methods...
152 //-------------------------------------------------------------------------
153
154 int32_t
155 CopticCalendar::copticToJD(int32_t year, int32_t month, int32_t day)
156 {
157 return CECalendar::ceToJD(year, month, day, COPTIC_JD_EPOCH_OFFSET);
158 }
159 #endif
160
161 U_NAMESPACE_END
162
163 #endif /* #if !UCONFIG_NO_FORMATTING */
164 //eof
165