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godot/core/os/time.cpp
Rémi Verschelde d95794ec8a
One Copyright Update to rule them all 
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".
2023-01-05 13:25:55 +01:00

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/**************************************************************************/
/* time.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "time.h"
#include "core/os/os.h"
#define UNIX_EPOCH_YEAR_AD 1970 // 1970
#define SECONDS_PER_DAY (24 * 60 * 60) // 86400
#define IS_LEAP_YEAR(year) (!((year) % 4) && (((year) % 100) || !((year) % 400)))
#define YEAR_SIZE(year) (IS_LEAP_YEAR(year) ? 366 : 365)
#define YEAR_KEY "year"
#define MONTH_KEY "month"
#define DAY_KEY "day"
#define WEEKDAY_KEY "weekday"
#define HOUR_KEY "hour"
#define MINUTE_KEY "minute"
#define SECOND_KEY "second"
#define DST_KEY "dst"
// Table of number of days in each month (for regular year and leap year).
static const uint8_t MONTH_DAYS_TABLE[2][12] = {
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
};
VARIANT_ENUM_CAST(Month);
VARIANT_ENUM_CAST(Weekday);
#define UNIX_TIME_TO_HMS \
uint8_t hour, minute, second; \
{ \
/* The time of the day (in seconds since start of day). */ \
uint32_t day_clock = Math::posmod(p_unix_time_val, SECONDS_PER_DAY); \
/* On x86 these 4 lines can be optimized to only 2 divisions. */ \
second = day_clock % 60; \
day_clock /= 60; \
minute = day_clock % 60; \
hour = day_clock / 60; \
}
#define UNIX_TIME_TO_YMD \
int64_t year; \
Month month; \
uint8_t day; \
/* The day number since Unix epoch (0-index). Days before 1970 are negative. */ \
int64_t day_number = Math::floor(p_unix_time_val / (double)SECONDS_PER_DAY); \
{ \
int64_t day_number_copy = day_number; \
year = UNIX_EPOCH_YEAR_AD; \
uint8_t month_zero_index = 0; \
while (day_number_copy >= YEAR_SIZE(year)) { \
day_number_copy -= YEAR_SIZE(year); \
year++; \
} \
while (day_number_copy < 0) { \
year--; \
day_number_copy += YEAR_SIZE(year); \
} \
/* After the above, day_number now represents the day of the year (0-index). */ \
while (day_number_copy >= MONTH_DAYS_TABLE[IS_LEAP_YEAR(year)][month_zero_index]) { \
day_number_copy -= MONTH_DAYS_TABLE[IS_LEAP_YEAR(year)][month_zero_index]; \
month_zero_index++; \
} \
/* After the above, day_number now represents the day of the month (0-index). */ \
month = (Month)(month_zero_index + 1); \
day = day_number_copy + 1; \
}
#define VALIDATE_YMDHMS(ret) \
ERR_FAIL_COND_V_MSG(month == 0, ret, "Invalid month value of: " + itos(month) + ", months are 1-indexed and cannot be 0. See the Time.Month enum for valid values."); \
ERR_FAIL_COND_V_MSG(month < 0, ret, "Invalid month value of: " + itos(month) + "."); \
ERR_FAIL_COND_V_MSG(month > 12, ret, "Invalid month value of: " + itos(month) + ". See the Time.Month enum for valid values."); \
ERR_FAIL_COND_V_MSG(hour > 23, ret, "Invalid hour value of: " + itos(hour) + "."); \
ERR_FAIL_COND_V_MSG(hour < 0, ret, "Invalid hour value of: " + itos(hour) + "."); \
ERR_FAIL_COND_V_MSG(minute > 59, ret, "Invalid minute value of: " + itos(minute) + "."); \
ERR_FAIL_COND_V_MSG(minute < 0, ret, "Invalid minute value of: " + itos(minute) + "."); \
ERR_FAIL_COND_V_MSG(second > 59, ret, "Invalid second value of: " + itos(second) + " (leap seconds are not supported)."); \
ERR_FAIL_COND_V_MSG(second < 0, ret, "Invalid second value of: " + itos(second) + "."); \
ERR_FAIL_COND_V_MSG(day == 0, ret, "Invalid day value of: " + itos(day) + ", days are 1-indexed and cannot be 0."); \
ERR_FAIL_COND_V_MSG(day < 0, ret, "Invalid day value of: " + itos(day) + "."); \
/* Do this check after month is tested as valid. */ \
uint8_t days_in_this_month = MONTH_DAYS_TABLE[IS_LEAP_YEAR(year)][month - 1]; \
ERR_FAIL_COND_V_MSG(day > days_in_this_month, ret, "Invalid day value of: " + itos(day) + " which is larger than the maximum for this month, " + itos(days_in_this_month) + ".");
#define YMD_TO_DAY_NUMBER \
/* The day number since Unix epoch (0-index). Days before 1970 are negative. */ \
int64_t day_number = day - 1; \
/* Add the days in the months to day_number. */ \
for (int i = 0; i < month - 1; i++) { \
day_number += MONTH_DAYS_TABLE[IS_LEAP_YEAR(year)][i]; \
} \
/* Add the days in the years to day_number. */ \
if (year >= UNIX_EPOCH_YEAR_AD) { \
for (int64_t iyear = UNIX_EPOCH_YEAR_AD; iyear < year; iyear++) { \
day_number += YEAR_SIZE(iyear); \
} \
} else { \
for (int64_t iyear = UNIX_EPOCH_YEAR_AD - 1; iyear >= year; iyear--) { \
day_number -= YEAR_SIZE(iyear); \
} \
}
#define PARSE_ISO8601_STRING(ret) \
int64_t year = UNIX_EPOCH_YEAR_AD; \
Month month = MONTH_JANUARY; \
int day = 1; \
int hour = 0; \
int minute = 0; \
int second = 0; \
{ \
bool has_date = false, has_time = false; \
String date, time; \
if (p_datetime.find_char('T') > 0) { \
has_date = has_time = true; \
PackedStringArray array = p_datetime.split("T"); \
ERR_FAIL_COND_V_MSG(array.size() < 2, ret, "Invalid ISO 8601 date/time string."); \
date = array[0]; \
time = array[1]; \
} else if (p_datetime.find_char(' ') > 0) { \
has_date = has_time = true; \
PackedStringArray array = p_datetime.split(" "); \
ERR_FAIL_COND_V_MSG(array.size() < 2, ret, "Invalid ISO 8601 date/time string."); \
date = array[0]; \
time = array[1]; \
} else if (p_datetime.find_char('-', 1) > 0) { \
has_date = true; \
date = p_datetime; \
} else if (p_datetime.find_char(':') > 0) { \
has_time = true; \
time = p_datetime; \
} \
/* Set the variables from the contents of the string. */ \
if (has_date) { \
PackedInt32Array array = date.split_ints("-", false); \
ERR_FAIL_COND_V_MSG(array.size() < 3, ret, "Invalid ISO 8601 date string."); \
year = array[0]; \
month = (Month)array[1]; \
day = array[2]; \
/* Handle negative years. */ \
if (p_datetime.find_char('-') == 0) { \
year *= -1; \
} \
} \
if (has_time) { \
PackedInt32Array array = time.split_ints(":", false); \
ERR_FAIL_COND_V_MSG(array.size() < 3, ret, "Invalid ISO 8601 time string."); \
hour = array[0]; \
minute = array[1]; \
second = array[2]; \
} \
}
#define EXTRACT_FROM_DICTIONARY \
/* Get all time values from the dictionary. If it doesn't exist, set the */ \
/* values to the default values for Unix epoch (1970-01-01 00:00:00). */ \
int64_t year = p_datetime.has(YEAR_KEY) ? int64_t(p_datetime[YEAR_KEY]) : UNIX_EPOCH_YEAR_AD; \
Month month = Month((p_datetime.has(MONTH_KEY)) ? int(p_datetime[MONTH_KEY]) : 1); \
int day = p_datetime.has(DAY_KEY) ? int(p_datetime[DAY_KEY]) : 1; \
int hour = p_datetime.has(HOUR_KEY) ? int(p_datetime[HOUR_KEY]) : 0; \
int minute = p_datetime.has(MINUTE_KEY) ? int(p_datetime[MINUTE_KEY]) : 0; \
int second = p_datetime.has(SECOND_KEY) ? int(p_datetime[SECOND_KEY]) : 0;
Time *Time::singleton = nullptr;
Time *Time::get_singleton() {
if (!singleton) {
memnew(Time);
}
return singleton;
}
Dictionary Time::get_datetime_dict_from_unix_time(int64_t p_unix_time_val) const {
UNIX_TIME_TO_HMS
UNIX_TIME_TO_YMD
Dictionary datetime;
datetime[YEAR_KEY] = year;
datetime[MONTH_KEY] = (uint8_t)month;
datetime[DAY_KEY] = day;
// Unix epoch was a Thursday (day 0 aka 1970-01-01).
datetime[WEEKDAY_KEY] = Math::posmod(day_number + WEEKDAY_THURSDAY, 7);
datetime[HOUR_KEY] = hour;
datetime[MINUTE_KEY] = minute;
datetime[SECOND_KEY] = second;
return datetime;
}
Dictionary Time::get_date_dict_from_unix_time(int64_t p_unix_time_val) const {
UNIX_TIME_TO_YMD
Dictionary datetime;
datetime[YEAR_KEY] = year;
datetime[MONTH_KEY] = (uint8_t)month;
datetime[DAY_KEY] = day;
// Unix epoch was a Thursday (day 0 aka 1970-01-01).
datetime[WEEKDAY_KEY] = Math::posmod(day_number + WEEKDAY_THURSDAY, 7);
return datetime;
}
Dictionary Time::get_time_dict_from_unix_time(int64_t p_unix_time_val) const {
UNIX_TIME_TO_HMS
Dictionary datetime;
datetime[HOUR_KEY] = hour;
datetime[MINUTE_KEY] = minute;
datetime[SECOND_KEY] = second;
return datetime;
}
String Time::get_datetime_string_from_unix_time(int64_t p_unix_time_val, bool p_use_space) const {
UNIX_TIME_TO_HMS
UNIX_TIME_TO_YMD
// vformat only supports up to 6 arguments, so we need to split this up into 2 parts.
String timestamp = vformat("%04d-%02d-%02d", year, (uint8_t)month, day);
if (p_use_space) {
timestamp = vformat("%s %02d:%02d:%02d", timestamp, hour, minute, second);
} else {
timestamp = vformat("%sT%02d:%02d:%02d", timestamp, hour, minute, second);
}
return timestamp;
}
String Time::get_date_string_from_unix_time(int64_t p_unix_time_val) const {
UNIX_TIME_TO_YMD
// Android is picky about the types passed to make Variant, so we need a cast.
return vformat("%04d-%02d-%02d", year, (uint8_t)month, day);
}
String Time::get_time_string_from_unix_time(int64_t p_unix_time_val) const {
UNIX_TIME_TO_HMS
return vformat("%02d:%02d:%02d", hour, minute, second);
}
Dictionary Time::get_datetime_dict_from_datetime_string(String p_datetime, bool p_weekday) const {
PARSE_ISO8601_STRING(Dictionary())
Dictionary dict;
dict[YEAR_KEY] = year;
dict[MONTH_KEY] = (uint8_t)month;
dict[DAY_KEY] = day;
if (p_weekday) {
YMD_TO_DAY_NUMBER
// Unix epoch was a Thursday (day 0 aka 1970-01-01).
dict[WEEKDAY_KEY] = Math::posmod(day_number + WEEKDAY_THURSDAY, 7);
}
dict[HOUR_KEY] = hour;
dict[MINUTE_KEY] = minute;
dict[SECOND_KEY] = second;
return dict;
}
String Time::get_datetime_string_from_datetime_dict(const Dictionary p_datetime, bool p_use_space) const {
ERR_FAIL_COND_V_MSG(p_datetime.is_empty(), "", "Invalid datetime Dictionary: Dictionary is empty.");
EXTRACT_FROM_DICTIONARY
VALIDATE_YMDHMS("")
// vformat only supports up to 6 arguments, so we need to split this up into 2 parts.
String timestamp = vformat("%04d-%02d-%02d", year, (uint8_t)month, day);
if (p_use_space) {
timestamp = vformat("%s %02d:%02d:%02d", timestamp, hour, minute, second);
} else {
timestamp = vformat("%sT%02d:%02d:%02d", timestamp, hour, minute, second);
}
return timestamp;
}
int64_t Time::get_unix_time_from_datetime_dict(const Dictionary p_datetime) const {
ERR_FAIL_COND_V_MSG(p_datetime.is_empty(), 0, "Invalid datetime Dictionary: Dictionary is empty");
EXTRACT_FROM_DICTIONARY
VALIDATE_YMDHMS(0)
YMD_TO_DAY_NUMBER
return day_number * SECONDS_PER_DAY + hour * 3600 + minute * 60 + second;
}
int64_t Time::get_unix_time_from_datetime_string(String p_datetime) const {
PARSE_ISO8601_STRING(-1)
VALIDATE_YMDHMS(0)
YMD_TO_DAY_NUMBER
return day_number * SECONDS_PER_DAY + hour * 3600 + minute * 60 + second;
}
String Time::get_offset_string_from_offset_minutes(int64_t p_offset_minutes) const {
String sign;
if (p_offset_minutes < 0) {
sign = "-";
p_offset_minutes = -p_offset_minutes;
} else {
sign = "+";
}
// These two lines can be optimized to one instruction on x86 and others.
// Note that % is acceptable here only because we ensure it's positive.
int64_t offset_hours = p_offset_minutes / 60;
int64_t offset_minutes = p_offset_minutes % 60;
return vformat("%s%02d:%02d", sign, offset_hours, offset_minutes);
}
Dictionary Time::get_datetime_dict_from_system(bool p_utc) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
Dictionary datetime;
datetime[YEAR_KEY] = dt.year;
datetime[MONTH_KEY] = (uint8_t)dt.month;
datetime[DAY_KEY] = dt.day;
datetime[WEEKDAY_KEY] = (uint8_t)dt.weekday;
datetime[HOUR_KEY] = dt.hour;
datetime[MINUTE_KEY] = dt.minute;
datetime[SECOND_KEY] = dt.second;
datetime[DST_KEY] = dt.dst;
return datetime;
}
Dictionary Time::get_date_dict_from_system(bool p_utc) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
Dictionary date_dictionary;
date_dictionary[YEAR_KEY] = dt.year;
date_dictionary[MONTH_KEY] = (uint8_t)dt.month;
date_dictionary[DAY_KEY] = dt.day;
date_dictionary[WEEKDAY_KEY] = (uint8_t)dt.weekday;
return date_dictionary;
}
Dictionary Time::get_time_dict_from_system(bool p_utc) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
Dictionary time_dictionary;
time_dictionary[HOUR_KEY] = dt.hour;
time_dictionary[MINUTE_KEY] = dt.minute;
time_dictionary[SECOND_KEY] = dt.second;
return time_dictionary;
}
String Time::get_datetime_string_from_system(bool p_utc, bool p_use_space) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
// vformat only supports up to 6 arguments, so we need to split this up into 2 parts.
String timestamp = vformat("%04d-%02d-%02d", dt.year, (uint8_t)dt.month, dt.day);
if (p_use_space) {
timestamp = vformat("%s %02d:%02d:%02d", timestamp, dt.hour, dt.minute, dt.second);
} else {
timestamp = vformat("%sT%02d:%02d:%02d", timestamp, dt.hour, dt.minute, dt.second);
}
return timestamp;
}
String Time::get_date_string_from_system(bool p_utc) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
// Android is picky about the types passed to make Variant, so we need a cast.
return vformat("%04d-%02d-%02d", dt.year, (uint8_t)dt.month, dt.day);
}
String Time::get_time_string_from_system(bool p_utc) const {
OS::DateTime dt = OS::get_singleton()->get_datetime(p_utc);
return vformat("%02d:%02d:%02d", dt.hour, dt.minute, dt.second);
}
Dictionary Time::get_time_zone_from_system() const {
OS::TimeZoneInfo info = OS::get_singleton()->get_time_zone_info();
Dictionary timezone;
timezone["bias"] = info.bias;
timezone["name"] = info.name;
return timezone;
}
double Time::get_unix_time_from_system() const {
return OS::get_singleton()->get_unix_time();
}
uint64_t Time::get_ticks_msec() const {
return OS::get_singleton()->get_ticks_msec();
}
uint64_t Time::get_ticks_usec() const {
return OS::get_singleton()->get_ticks_usec();
}
void Time::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_datetime_dict_from_unix_time", "unix_time_val"), &Time::get_datetime_dict_from_unix_time);
ClassDB::bind_method(D_METHOD("get_date_dict_from_unix_time", "unix_time_val"), &Time::get_date_dict_from_unix_time);
ClassDB::bind_method(D_METHOD("get_time_dict_from_unix_time", "unix_time_val"), &Time::get_time_dict_from_unix_time);
ClassDB::bind_method(D_METHOD("get_datetime_string_from_unix_time", "unix_time_val", "use_space"), &Time::get_datetime_string_from_unix_time, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_date_string_from_unix_time", "unix_time_val"), &Time::get_date_string_from_unix_time);
ClassDB::bind_method(D_METHOD("get_time_string_from_unix_time", "unix_time_val"), &Time::get_time_string_from_unix_time);
ClassDB::bind_method(D_METHOD("get_datetime_dict_from_datetime_string", "datetime", "weekday"), &Time::get_datetime_dict_from_datetime_string);
ClassDB::bind_method(D_METHOD("get_datetime_string_from_datetime_dict", "datetime", "use_space"), &Time::get_datetime_string_from_datetime_dict);
ClassDB::bind_method(D_METHOD("get_unix_time_from_datetime_dict", "datetime"), &Time::get_unix_time_from_datetime_dict);
ClassDB::bind_method(D_METHOD("get_unix_time_from_datetime_string", "datetime"), &Time::get_unix_time_from_datetime_string);
ClassDB::bind_method(D_METHOD("get_offset_string_from_offset_minutes", "offset_minutes"), &Time::get_offset_string_from_offset_minutes);
ClassDB::bind_method(D_METHOD("get_datetime_dict_from_system", "utc"), &Time::get_datetime_dict_from_system, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_date_dict_from_system", "utc"), &Time::get_date_dict_from_system, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_time_dict_from_system", "utc"), &Time::get_time_dict_from_system, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_datetime_string_from_system", "utc", "use_space"), &Time::get_datetime_string_from_system, DEFVAL(false), DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_date_string_from_system", "utc"), &Time::get_date_string_from_system, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_time_string_from_system", "utc"), &Time::get_time_string_from_system, DEFVAL(false));
ClassDB::bind_method(D_METHOD("get_time_zone_from_system"), &Time::get_time_zone_from_system);
ClassDB::bind_method(D_METHOD("get_unix_time_from_system"), &Time::get_unix_time_from_system);
ClassDB::bind_method(D_METHOD("get_ticks_msec"), &Time::get_ticks_msec);
ClassDB::bind_method(D_METHOD("get_ticks_usec"), &Time::get_ticks_usec);
BIND_ENUM_CONSTANT(MONTH_JANUARY);
BIND_ENUM_CONSTANT(MONTH_FEBRUARY);
BIND_ENUM_CONSTANT(MONTH_MARCH);
BIND_ENUM_CONSTANT(MONTH_APRIL);
BIND_ENUM_CONSTANT(MONTH_MAY);
BIND_ENUM_CONSTANT(MONTH_JUNE);
BIND_ENUM_CONSTANT(MONTH_JULY);
BIND_ENUM_CONSTANT(MONTH_AUGUST);
BIND_ENUM_CONSTANT(MONTH_SEPTEMBER);
BIND_ENUM_CONSTANT(MONTH_OCTOBER);
BIND_ENUM_CONSTANT(MONTH_NOVEMBER);
BIND_ENUM_CONSTANT(MONTH_DECEMBER);
BIND_ENUM_CONSTANT(WEEKDAY_SUNDAY);
BIND_ENUM_CONSTANT(WEEKDAY_MONDAY);
BIND_ENUM_CONSTANT(WEEKDAY_TUESDAY);
BIND_ENUM_CONSTANT(WEEKDAY_WEDNESDAY);
BIND_ENUM_CONSTANT(WEEKDAY_THURSDAY);
BIND_ENUM_CONSTANT(WEEKDAY_FRIDAY);
BIND_ENUM_CONSTANT(WEEKDAY_SATURDAY);
}
Time::Time() {
ERR_FAIL_COND_MSG(singleton, "Singleton for Time already exists.");
singleton = this;
}
Time::~Time() {
singleton = nullptr;
}
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