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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 0 : UOBJECT_DEFINE_RTTI_IMPLEMENTATION(CopticCalendar)
22 :
23 : static const int32_t COPTIC_JD_EPOCH_OFFSET = 1824665;
24 :
25 : //-------------------------------------------------------------------------
26 : // Constructors...
27 : //-------------------------------------------------------------------------
28 :
29 0 : CopticCalendar::CopticCalendar(const Locale& aLocale, UErrorCode& success)
30 0 : : CECalendar(aLocale, success)
31 : {
32 0 : }
33 :
34 0 : CopticCalendar::CopticCalendar (const CopticCalendar& other)
35 0 : : CECalendar(other)
36 : {
37 0 : }
38 :
39 0 : CopticCalendar::~CopticCalendar()
40 : {
41 0 : }
42 :
43 : Calendar*
44 0 : CopticCalendar::clone() const
45 : {
46 0 : return new CopticCalendar(*this);
47 : }
48 :
49 : const char*
50 0 : CopticCalendar::getType() const
51 : {
52 0 : return "coptic";
53 : }
54 :
55 : //-------------------------------------------------------------------------
56 : // Calendar framework
57 : //-------------------------------------------------------------------------
58 :
59 : int32_t
60 0 : CopticCalendar::handleGetExtendedYear()
61 : {
62 : int32_t eyear;
63 0 : if (newerField(UCAL_EXTENDED_YEAR, UCAL_YEAR) == UCAL_EXTENDED_YEAR) {
64 0 : 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 0 : int32_t era = internalGet(UCAL_ERA, CE);
68 0 : if (era == BCE) {
69 0 : eyear = 1 - internalGet(UCAL_YEAR, 1); // Convert to extended year
70 : } else {
71 0 : eyear = internalGet(UCAL_YEAR, 1); // Default to year 1
72 : }
73 : }
74 0 : return eyear;
75 : }
76 :
77 : void
78 0 : CopticCalendar::handleComputeFields(int32_t julianDay, UErrorCode &/*status*/)
79 : {
80 : int32_t eyear, month, day, era, year;
81 0 : jdToCE(julianDay, getJDEpochOffset(), eyear, month, day);
82 :
83 0 : if (eyear <= 0) {
84 0 : era = BCE;
85 0 : year = 1 - eyear;
86 : } else {
87 0 : era = CE;
88 0 : year = eyear;
89 : }
90 :
91 0 : internalSet(UCAL_EXTENDED_YEAR, eyear);
92 0 : internalSet(UCAL_ERA, era);
93 0 : internalSet(UCAL_YEAR, year);
94 0 : internalSet(UCAL_MONTH, month);
95 0 : internalSet(UCAL_DATE, day);
96 0 : internalSet(UCAL_DAY_OF_YEAR, (30 * month) + day);
97 0 : }
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 :
109 0 : static void U_CALLCONV initializeSystemDefaultCentury() {
110 0 : UErrorCode status = U_ZERO_ERROR;
111 0 : CopticCalendar calendar(Locale("@calendar=coptic"), status);
112 0 : if (U_SUCCESS(status)) {
113 0 : calendar.setTime(Calendar::getNow(), status);
114 0 : calendar.add(UCAL_YEAR, -80, status);
115 0 : gSystemDefaultCenturyStart = calendar.getTime(status);
116 0 : gSystemDefaultCenturyStartYear = calendar.get(UCAL_YEAR, status);
117 : }
118 : // We have no recourse upon failure unless we want to propagate the failure
119 : // out.
120 0 : }
121 :
122 : UDate
123 0 : CopticCalendar::defaultCenturyStart() const
124 : {
125 : // lazy-evaluate systemDefaultCenturyStart
126 0 : umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
127 0 : return gSystemDefaultCenturyStart;
128 : }
129 :
130 : int32_t
131 0 : CopticCalendar::defaultCenturyStartYear() const
132 : {
133 : // lazy-evaluate systemDefaultCenturyStart
134 0 : umtx_initOnce(gSystemDefaultCenturyInit, &initializeSystemDefaultCentury);
135 0 : return gSystemDefaultCenturyStartYear;
136 : }
137 :
138 :
139 : int32_t
140 0 : CopticCalendar::getJDEpochOffset() const
141 : {
142 0 : 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
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