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Code Issues Releases Activity

tz_manager: Implement missing transition times

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time_zone_manager: Use s64 storage
This commit is contained in:
lat9nq 2023-06-03 20:52:51 -04:00
parent 78a47f1ee8
commit 3218313c22
1 changed files with 59 additions and 1 deletions
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60
src/core/hle/service/time/time_zone_manager.cpp
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@ -524,6 +524,7 @@ static bool ParseTimeZoneBinary(TimeZoneRule& time_zone_rule, FileSys::VirtualFi
constexpr s32 time_zone_max_leaps{50};
constexpr s32 time_zone_max_chars{50};
constexpr s32 time_zone_max_times{1000};
if (!(0 <= header.leap_count && header.leap_count < time_zone_max_leaps &&
0 < header.type_count && header.type_count < s32(time_zone_rule.ttis.size()) &&
0 <= header.time_count && header.time_count < s32(time_zone_rule.ats.size()) &&
@ -634,9 +635,66 @@ static bool ParseTimeZoneBinary(TimeZoneRule& time_zone_rule, FileSys::VirtualFi
std::array<char, time_zone_name_max> name{};
std::memcpy(name.data(), temp_name.data() + 1, std::size_t(bytes_read - 1));
// Fill in computed transition times with temp rule
TimeZoneRule temp_rule;
if (ParsePosixName(name.data(), temp_rule)) {
UNIMPLEMENTED();
int have_abbreviation = 0;
int char_count = time_zone_rule.char_count;
for (int i = 0; i < temp_rule.type_count; i++) {
char* temp_abbreviation =
temp_rule.chars.data() + temp_rule.ttis[i].abbreviation_list_index;
int j;
for (j = 0; j < char_count; j++) {
if (std::strcmp(time_zone_rule.chars.data() + j, temp_abbreviation) == 0) {
temp_rule.ttis[i].abbreviation_list_index = j;
have_abbreviation++;
break;
}
}
if (j >= char_count) {
int temp_abbreviation_length = static_cast<int>(std::strlen(temp_abbreviation));
if (j + temp_abbreviation_length < time_zone_max_chars) {
std::strcpy(time_zone_rule.chars.data() + j, temp_abbreviation);
char_count = j + temp_abbreviation_length + 1;
temp_rule.ttis[i].abbreviation_list_index = j;
have_abbreviation++;
}
}
}
if (have_abbreviation == temp_rule.type_count) {
time_zone_rule.char_count = char_count;
// Original comment:
/* Ignore any trailing, no-op transitions generated
by zic as they don't help here and can run afoul
of bugs in zic 2016j or earlier. */
// This is possibly unnecessary for yuzu, since Nintendo doesn't run zic
while (1 < time_zone_rule.time_count &&
(time_zone_rule.types[time_zone_rule.time_count - 1] ==
time_zone_rule.types[time_zone_rule.time_count - 2])) {
time_zone_rule.time_count--;
}
for (int i = 0;
i < temp_rule.time_count && time_zone_rule.time_count < time_zone_max_times;
i++) {
const s64 transition_time = temp_rule.ats[i];
if (0 < time_zone_rule.time_count &&
transition_time <= time_zone_rule.ats[time_zone_rule.time_count - 1]) {
continue;
}
time_zone_rule.ats[time_zone_rule.time_count] = transition_time;
time_zone_rule.types[time_zone_rule.time_count] =
static_cast<s8>(time_zone_rule.type_count + temp_rule.types[i]);
time_zone_rule.time_count++;
}
for (int i = 0; i < temp_rule.type_count; i++) {
time_zone_rule.ttis[time_zone_rule.type_count++] = temp_rule.ttis[i];
}
}
}
}