diff options
Diffstat (limited to 'src/core/hle/service/psc/time/time_zone.cpp')
| -rw-r--r-- | src/core/hle/service/psc/time/time_zone.cpp | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/core/hle/service/psc/time/time_zone.cpp b/src/core/hle/service/psc/time/time_zone.cpp new file mode 100644 index 000000000..cfee8f866 --- /dev/null +++ b/src/core/hle/service/psc/time/time_zone.cpp @@ -0,0 +1,280 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "core/hle/service/psc/time/time_zone.h" + +namespace Service::PSC::Time { +namespace { +constexpr Result ValidateRule(Tz::Rule& rule) { + if (rule.typecnt > static_cast<s32>(Tz::TZ_MAX_TYPES) || + rule.timecnt > static_cast<s32>(Tz::TZ_MAX_TIMES) || + rule.charcnt > static_cast<s32>(Tz::TZ_MAX_CHARS)) { + R_RETURN(ResultTimeZoneOutOfRange); + } + + for (s32 i = 0; i < rule.timecnt; i++) { + if (rule.types[i] >= rule.typecnt) { + R_RETURN(ResultTimeZoneOutOfRange); + } + } + + for (s32 i = 0; i < rule.typecnt; i++) { + if (rule.ttis[i].tt_desigidx >= static_cast<s32>(rule.chars.size())) { + R_RETURN(ResultTimeZoneOutOfRange); + } + } + R_SUCCEED(); +} + +constexpr bool GetTimeZoneTime(s64& out_time, Tz::Rule& rule, s64 time, s32 index, + s32 index_offset) { + s32 found_idx{}; + s32 expected_index{index + index_offset}; + s64 time_to_find{time + rule.ttis[rule.types[index]].tt_utoff - + rule.ttis[rule.types[expected_index]].tt_utoff}; + + if (rule.timecnt > 1 && rule.ats[0] <= time_to_find) { + s32 low{1}; + s32 high{rule.timecnt}; + + while (low < high) { + auto mid{(low + high) / 2}; + if (rule.ats[mid] <= time_to_find) { + low = mid + 1; + } else if (rule.ats[mid] > time_to_find) { + high = mid; + } + } + found_idx = low - 1; + } + + if (found_idx == expected_index) { + out_time = time_to_find; + } + return found_idx == expected_index; +} +} // namespace + +void TimeZone::SetTimePoint(SteadyClockTimePoint& time_point) { + std::scoped_lock l{m_mutex}; + m_steady_clock_time_point = time_point; +} + +void TimeZone::SetTotalLocationNameCount(u32 count) { + std::scoped_lock l{m_mutex}; + m_total_location_name_count = count; +} + +void TimeZone::SetRuleVersion(RuleVersion& rule_version) { + std::scoped_lock l{m_mutex}; + m_rule_version = rule_version; +} + +Result TimeZone::GetLocationName(LocationName& out_name) { + std::scoped_lock l{m_mutex}; + R_UNLESS(m_initialized, ResultClockUninitialized); + out_name = m_location; + R_SUCCEED(); +} + +Result TimeZone::GetTotalLocationCount(u32& out_count) { + std::scoped_lock l{m_mutex}; + if (!m_initialized) { + return ResultClockUninitialized; + } + + out_count = m_total_location_name_count; + R_SUCCEED(); +} + +Result TimeZone::GetRuleVersion(RuleVersion& out_rule_version) { + std::scoped_lock l{m_mutex}; + if (!m_initialized) { + return ResultClockUninitialized; + } + out_rule_version = m_rule_version; + R_SUCCEED(); +} + +Result TimeZone::GetTimePoint(SteadyClockTimePoint& out_time_point) { + std::scoped_lock l{m_mutex}; + if (!m_initialized) { + return ResultClockUninitialized; + } + out_time_point = m_steady_clock_time_point; + R_SUCCEED(); +} + +Result TimeZone::ToCalendarTime(CalendarTime& out_calendar_time, + CalendarAdditionalInfo& out_additional_info, s64 time, + Tz::Rule& rule) { + std::scoped_lock l{m_mutex}; + R_RETURN(ToCalendarTimeImpl(out_calendar_time, out_additional_info, time, rule)); +} + +Result TimeZone::ToCalendarTimeWithMyRule(CalendarTime& calendar_time, + CalendarAdditionalInfo& calendar_additional, s64 time) { + // This is checked outside the mutex. Bug? + if (!m_initialized) { + return ResultClockUninitialized; + } + + std::scoped_lock l{m_mutex}; + R_RETURN(ToCalendarTimeImpl(calendar_time, calendar_additional, time, m_my_rule)); +} + +Result TimeZone::ParseBinary(LocationName& name, std::span<const u8> binary) { + std::scoped_lock l{m_mutex}; + + Tz::Rule tmp_rule{}; + R_TRY(ParseBinaryImpl(tmp_rule, binary)); + + m_my_rule = tmp_rule; + m_location = name; + + R_SUCCEED(); +} + +Result TimeZone::ParseBinaryInto(Tz::Rule& out_rule, std::span<const u8> binary) { + std::scoped_lock l{m_mutex}; + R_RETURN(ParseBinaryImpl(out_rule, binary)); +} + +Result TimeZone::ToPosixTime(u32& out_count, std::span<s64, 2> out_times, u32 out_times_count, + CalendarTime& calendar, Tz::Rule& rule) { + std::scoped_lock l{m_mutex}; + + auto res = ToPosixTimeImpl(out_count, out_times, out_times_count, calendar, rule, -1); + + if (res != ResultSuccess) { + if (res == ResultTimeZoneNotFound) { + res = ResultSuccess; + out_count = 0; + } + } else if (out_count == 2 && out_times[0] > out_times[1]) { + std::swap(out_times[0], out_times[1]); + } + R_RETURN(res); +} + +Result TimeZone::ToPosixTimeWithMyRule(u32& out_count, std::span<s64, 2> out_times, + u32 out_times_count, CalendarTime& calendar) { + std::scoped_lock l{m_mutex}; + + auto res = ToPosixTimeImpl(out_count, out_times, out_times_count, calendar, m_my_rule, -1); + + if (res != ResultSuccess) { + if (res == ResultTimeZoneNotFound) { + res = ResultSuccess; + out_count = 0; + } + } else if (out_count == 2 && out_times[0] > out_times[1]) { + std::swap(out_times[0], out_times[1]); + } + R_RETURN(res); +} + +Result TimeZone::ParseBinaryImpl(Tz::Rule& out_rule, std::span<const u8> binary) { + if (Tz::ParseTimeZoneBinary(out_rule, binary)) { + R_RETURN(ResultTimeZoneParseFailed); + } + R_SUCCEED(); +} + +Result TimeZone::ToCalendarTimeImpl(CalendarTime& out_calendar_time, + CalendarAdditionalInfo& out_additional_info, s64 time, + Tz::Rule& rule) { + R_TRY(ValidateRule(rule)); + + Tz::CalendarTimeInternal calendar_internal{}; + time_t time_tmp{static_cast<time_t>(time)}; + if (Tz::localtime_rz(&calendar_internal, &rule, &time_tmp)) { + R_RETURN(ResultOverflow); + } + + out_calendar_time.year = static_cast<s16>(calendar_internal.tm_year + 1900); + out_calendar_time.month = static_cast<s8>(calendar_internal.tm_mon + 1); + out_calendar_time.day = static_cast<s8>(calendar_internal.tm_mday); + out_calendar_time.hour = static_cast<s8>(calendar_internal.tm_hour); + out_calendar_time.minute = static_cast<s8>(calendar_internal.tm_min); + out_calendar_time.second = static_cast<s8>(calendar_internal.tm_sec); + + out_additional_info.day_of_week = calendar_internal.tm_wday; + out_additional_info.day_of_year = calendar_internal.tm_yday; + + std::memcpy(out_additional_info.name.data(), calendar_internal.tm_zone.data(), + out_additional_info.name.size()); + out_additional_info.name[out_additional_info.name.size() - 1] = '\0'; + + out_additional_info.is_dst = calendar_internal.tm_isdst; + out_additional_info.ut_offset = calendar_internal.tm_utoff; + + R_SUCCEED(); +} + +Result TimeZone::ToPosixTimeImpl(u32& out_count, std::span<s64, 2> out_times, u32 out_times_count, + CalendarTime& calendar, Tz::Rule& rule, s32 is_dst) { + R_TRY(ValidateRule(rule)); + + calendar.month -= 1; + calendar.year -= 1900; + + Tz::CalendarTimeInternal internal{ + .tm_sec = calendar.second, + .tm_min = calendar.minute, + .tm_hour = calendar.hour, + .tm_mday = calendar.day, + .tm_mon = calendar.month, + .tm_year = calendar.year, + .tm_wday = 0, + .tm_yday = 0, + .tm_isdst = is_dst, + .tm_zone = {}, + .tm_utoff = 0, + .time_index = 0, + }; + time_t time_tmp{}; + auto res = Tz::mktime_tzname(&time_tmp, &rule, &internal); + s64 time = static_cast<s64>(time_tmp); + + if (res == 1) { + R_RETURN(ResultOverflow); + } else if (res == 2) { + R_RETURN(ResultTimeZoneNotFound); + } + + if (internal.tm_sec != calendar.second || internal.tm_min != calendar.minute || + internal.tm_hour != calendar.hour || internal.tm_mday != calendar.day || + internal.tm_mon != calendar.month || internal.tm_year != calendar.year) { + R_RETURN(ResultTimeZoneNotFound); + } + + if (res != 0) { + ASSERT(false); + } + + out_times[0] = time; + if (out_times_count < 2) { + out_count = 1; + R_SUCCEED(); + } + + s64 time2{}; + if (internal.time_index > 0 && GetTimeZoneTime(time2, rule, time, internal.time_index, -1)) { + out_times[1] = time2; + out_count = 2; + R_SUCCEED(); + } + + if (((internal.time_index + 1) < rule.timecnt) && + GetTimeZoneTime(time2, rule, time, internal.time_index, 1)) { + out_times[1] = time2; + out_count = 2; + R_SUCCEED(); + } + + out_count = 1; + R_SUCCEED(); +} + +} // namespace Service::PSC::Time |