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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/intl/Calendar.h"
#include "unicode/ucal.h"
#include "unicode/uloc.h"
#include "unicode/utypes.h"
namespace mozilla::intl {
/* static */
Result<UniquePtr<Calendar>, ICUError> Calendar::TryCreate(
const char* aLocale, Maybe<Span<const char16_t>> aTimeZoneOverride) {
UErrorCode status = U_ZERO_ERROR;
const UChar* zoneID = nullptr;
int32_t zoneIDLen = 0;
if (aTimeZoneOverride) {
zoneIDLen = static_cast<int32_t>(aTimeZoneOverride->Length());
zoneID = aTimeZoneOverride->Elements();
}
UCalendar* calendar =
ucal_open(zoneID, zoneIDLen, aLocale, UCAL_DEFAULT, &status);
if (U_FAILURE(status)) {
return Err(ToICUError(status));
}
return MakeUnique<Calendar>(calendar);
}
Result<Span<const char>, ICUError> Calendar::GetBcp47Type() {
UErrorCode status = U_ZERO_ERROR;
const char* oldType = ucal_getType(mCalendar, &status);
if (U_FAILURE(status)) {
return Err(ToICUError(status));
}
const char* bcp47Type = uloc_toUnicodeLocaleType("calendar", oldType);
if (!bcp47Type) {
return Err(ICUError::InternalError);
}
return MakeStringSpan(bcp47Type);
}
static Weekday WeekdayFromDaysOfWeek(UCalendarDaysOfWeek weekday) {
switch (weekday) {
case UCAL_MONDAY:
return Weekday::Monday;
case UCAL_TUESDAY:
return Weekday::Tuesday;
case UCAL_WEDNESDAY:
return Weekday::Wednesday;
case UCAL_THURSDAY:
return Weekday::Thursday;
case UCAL_FRIDAY:
return Weekday::Friday;
case UCAL_SATURDAY:
return Weekday::Saturday;
case UCAL_SUNDAY:
return Weekday::Sunday;
}
MOZ_CRASH("unexpected weekday value");
}
Result<EnumSet<Weekday>, ICUError> Calendar::GetWeekend() {
static_assert(static_cast<int32_t>(UCAL_SUNDAY) == 1);
static_assert(static_cast<int32_t>(UCAL_SATURDAY) == 7);
UErrorCode status = U_ZERO_ERROR;
EnumSet<Weekday> weekend;
for (int32_t i = UCAL_SUNDAY; i <= UCAL_SATURDAY; i++) {
auto dayOfWeek = static_cast<UCalendarDaysOfWeek>(i);
auto type = ucal_getDayOfWeekType(mCalendar, dayOfWeek, &status);
if (U_FAILURE(status)) {
return Err(ToICUError(status));
}
switch (type) {
case UCAL_WEEKEND_ONSET:
// Treat days which start as a weekday as weekdays.
[[fallthrough]];
case UCAL_WEEKDAY:
break;
case UCAL_WEEKEND_CEASE:
// Treat days which start as a weekend day as weekend days.
[[fallthrough]];
case UCAL_WEEKEND:
weekend += WeekdayFromDaysOfWeek(dayOfWeek);
break;
}
}
return weekend;
}
Weekday Calendar::GetFirstDayOfWeek() {
int32_t firstDayOfWeek = ucal_getAttribute(mCalendar, UCAL_FIRST_DAY_OF_WEEK);
MOZ_ASSERT(UCAL_SUNDAY <= firstDayOfWeek && firstDayOfWeek <= UCAL_SATURDAY);
return WeekdayFromDaysOfWeek(
static_cast<UCalendarDaysOfWeek>(firstDayOfWeek));
}
int32_t Calendar::GetMinimalDaysInFirstWeek() {
int32_t minimalDays =
ucal_getAttribute(mCalendar, UCAL_MINIMAL_DAYS_IN_FIRST_WEEK);
MOZ_ASSERT(1 <= minimalDays && minimalDays <= 7);
return minimalDays;
}
Result<Ok, ICUError> Calendar::SetTimeInMs(double aUnixEpoch) {
UErrorCode status = U_ZERO_ERROR;
ucal_setMillis(mCalendar, aUnixEpoch, &status);
if (U_FAILURE(status)) {
return Err(ToICUError(status));
}
return Ok{};
}
/* static */
Result<SpanEnumeration<char>, ICUError>
Calendar::GetLegacyKeywordValuesForLocale(const char* aLocale) {
UErrorCode status = U_ZERO_ERROR;
UEnumeration* enumeration = ucal_getKeywordValuesForLocale(
"calendar", aLocale, /* commonlyUsed */ false, &status);
if (U_SUCCESS(status)) {
return SpanEnumeration<char>(enumeration);
}
return Err(ToICUError(status));
}
/* static */
SpanResult<char> Calendar::LegacyIdentifierToBcp47(const char* aIdentifier,
int32_t aLength) {
if (aIdentifier == nullptr) {
return Err(InternalError{});
}
// aLength is not needed here, as the ICU call uses the null terminated
// string.
return MakeStringSpan(uloc_toUnicodeLocaleType("ca", aIdentifier));
}
/* static */
Result<Calendar::Bcp47IdentifierEnumeration, ICUError>
Calendar::GetBcp47KeywordValuesForLocale(const char* aLocale,
CommonlyUsed aCommonlyUsed) {
UErrorCode status = U_ZERO_ERROR;
UEnumeration* enumeration = ucal_getKeywordValuesForLocale(
"calendar", aLocale, static_cast<bool>(aCommonlyUsed), &status);
if (U_SUCCESS(status)) {
return Bcp47IdentifierEnumeration(enumeration);
}
return Err(ToICUError(status));
}
Calendar::~Calendar() {
MOZ_ASSERT(mCalendar);
ucal_close(mCalendar);
}
} // namespace mozilla::intl
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