From 30f41c02aec763d32e62351452da9ef582bc3472 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Fri, 6 Mar 2026 13:30:59 -0800 Subject: Move contrib libraries to contrib repo --- contrib/SDL-3.2.8/src/time/SDL_time.c | 222 ---------------------------------- 1 file changed, 222 deletions(-) delete mode 100644 contrib/SDL-3.2.8/src/time/SDL_time.c (limited to 'contrib/SDL-3.2.8/src/time/SDL_time.c') diff --git a/contrib/SDL-3.2.8/src/time/SDL_time.c b/contrib/SDL-3.2.8/src/time/SDL_time.c deleted file mode 100644 index 54059de..0000000 --- a/contrib/SDL-3.2.8/src/time/SDL_time.c +++ /dev/null @@ -1,222 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2025 Sam Lantinga - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "SDL_internal.h" - -#include "SDL_time_c.h" - -/* The following algorithms are based on those of Howard Hinnant and are in the public domain. - * - * http://howardhinnant.github.io/date_algorithms.html - */ - -/* Given a calendar date, returns days since Jan 1 1970, and optionally - * the day of the week [0-6, 0 is Sunday] and day of the year [0-365]. - */ -Sint64 SDL_CivilToDays(int year, int month, int day, int *day_of_week, int *day_of_year) -{ - - year -= month <= 2; - const int era = (year >= 0 ? year : year - 399) / 400; - const unsigned yoe = (unsigned)(year - era * 400); // [0, 399] - const unsigned doy = (153 * (month > 2 ? month - 3 : month + 9) + 2) / 5 + day - 1; // [0, 365] - const unsigned doe = yoe * 365 + yoe / 4 - yoe / 100 + doy; // [0, 146096] - const Sint64 z = (Sint64)(era) * 146097 + (Sint64)(doe)-719468; - - if (day_of_week) { - *day_of_week = (int)(z >= -4 ? (z + 4) % 7 : (z + 5) % 7 + 6); - } - if (day_of_year) { - // This algorithm considers March 1 to be the first day of the year, so offset by Jan + Feb. - if (doy > 305) { - // Day 0 is the first day of the year. - *day_of_year = doy - 306; - } else { - const int doy_offset = 59 + (!(year % 4) && ((year % 100) || !(year % 400))); - *day_of_year = doy + doy_offset; - } - } - - return z; -} - -bool SDL_GetDateTimeLocalePreferences(SDL_DateFormat *dateFormat, SDL_TimeFormat *timeFormat) -{ - // Default to ISO 8061 date format, as it is unambiguous, and 24 hour time. - if (dateFormat) { - *dateFormat = SDL_DATE_FORMAT_YYYYMMDD; - } - if (timeFormat) { - *timeFormat = SDL_TIME_FORMAT_24HR; - } - - SDL_GetSystemTimeLocalePreferences(dateFormat, timeFormat); - - return true; -} - -int SDL_GetDaysInMonth(int year, int month) -{ - static const int DAYS_IN_MONTH[] = { - 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 - }; - - if (month < 1 || month > 12) { - SDL_SetError("Month out of range [1-12], requested: %i", month); - return -1; - } - - int days = DAYS_IN_MONTH[month - 1]; - - /* A leap year occurs every 4 years... - * but not every 100 years... - * except for every 400 years. - */ - if (month == 2 && (!(year % 4) && ((year % 100) || !(year % 400)))) { - ++days; - } - - return days; -} - -int SDL_GetDayOfYear(int year, int month, int day) -{ - int dayOfYear; - - if (month < 1 || month > 12) { - SDL_SetError("Month out of range [1-12], requested: %i", month); - return -1; - } - if (day < 1 || day > SDL_GetDaysInMonth(year, month)) { - SDL_SetError("Day out of range [1-%i], requested: %i", SDL_GetDaysInMonth(year, month), month); - return -1; - } - - SDL_CivilToDays(year, month, day, NULL, &dayOfYear); - return dayOfYear; -} - -int SDL_GetDayOfWeek(int year, int month, int day) -{ - int dayOfWeek; - - if (month < 1 || month > 12) { - SDL_SetError("Month out of range [1-12], requested: %i", month); - return -1; - } - if (day < 1 || day > SDL_GetDaysInMonth(year, month)) { - SDL_SetError("Day out of range [1-%i], requested: %i", SDL_GetDaysInMonth(year, month), month); - return -1; - } - - SDL_CivilToDays(year, month, day, &dayOfWeek, NULL); - return dayOfWeek; -} - -static bool SDL_DateTimeIsValid(const SDL_DateTime *dt) -{ - if (dt->month < 1 || dt->month > 12) { - SDL_SetError("Malformed SDL_DateTime: month out of range [1-12], current: %i", dt->month); - return false; - } - - const int daysInMonth = SDL_GetDaysInMonth(dt->year, dt->month); - if (dt->day < 1 || dt->day > daysInMonth) { - SDL_SetError("Malformed SDL_DateTime: day of month out of range [1-%i], current: %i", daysInMonth, dt->month); - return false; - } - if (dt->hour < 0 || dt->hour > 23) { - SDL_SetError("Malformed SDL_DateTime: hour out of range [0-23], current: %i", dt->hour); - return false; - } - if (dt->minute < 0 || dt->minute > 59) { - SDL_SetError("Malformed SDL_DateTime: minute out of range [0-59], current: %i", dt->minute); - return false; - } - if (dt->second < 0 || dt->second > 60) { - SDL_SetError("Malformed SDL_DateTime: second out of range [0-60], current: %i", dt->second); - return false; // 60 accounts for a possible leap second. - } - if (dt->nanosecond < 0 || dt->nanosecond >= SDL_NS_PER_SECOND) { - SDL_SetError("Malformed SDL_DateTime: nanosecond out of range [0-999999999], current: %i", dt->nanosecond); - return false; - } - - return true; -} - -bool SDL_DateTimeToTime(const SDL_DateTime *dt, SDL_Time *ticks) -{ - static const Sint64 max_seconds = SDL_NS_TO_SECONDS(SDL_MAX_TIME) - 1; - static const Sint64 min_seconds = SDL_NS_TO_SECONDS(SDL_MIN_TIME) + 1; - bool result = true; - - if (!dt) { - return SDL_InvalidParamError("dt"); - } - if (!ticks) { - return SDL_InvalidParamError("ticks"); - } - if (!SDL_DateTimeIsValid(dt)) { - // The validation function sets the error string. - return false; - } - - *ticks = SDL_CivilToDays(dt->year, dt->month, dt->day, NULL, NULL) * SDL_SECONDS_PER_DAY; - *ticks += (((dt->hour * 60) + dt->minute) * 60) + dt->second - dt->utc_offset; - if (*ticks > max_seconds || *ticks < min_seconds) { - *ticks = SDL_clamp(*ticks, min_seconds, max_seconds); - result = SDL_SetError("Date out of range for SDL_Time representation; SDL_Time value clamped"); - } - *ticks = SDL_SECONDS_TO_NS(*ticks) + dt->nanosecond; - - return result; -} - -#define DELTA_EPOCH_1601_100NS (11644473600ll * 10000000ll) // [100 ns] (100 ns units between 1601-01-01 and 1970-01-01, 11644473600 seconds) - -void SDL_TimeToWindows(SDL_Time ticks, Uint32 *dwLowDateTime, Uint32 *dwHighDateTime) -{ - /* Convert nanoseconds to Win32 ticks. - * SDL_Time has a range of roughly 292 years, so even SDL_MIN_TIME can't underflow the Win32 epoch. - */ - const Uint64 wtime = (Uint64)((ticks / 100) + DELTA_EPOCH_1601_100NS); - - if (dwLowDateTime) { - *dwLowDateTime = (Uint32)wtime; - } - - if (dwHighDateTime) { - *dwHighDateTime = (Uint32)(wtime >> 32); - } -} - -SDL_Time SDL_TimeFromWindows(Uint32 dwLowDateTime, Uint32 dwHighDateTime) -{ - static const Uint64 wintime_min = (Uint64)((SDL_MIN_TIME / 100) + DELTA_EPOCH_1601_100NS); - static const Uint64 wintime_max = (Uint64)((SDL_MAX_TIME / 100) + DELTA_EPOCH_1601_100NS); - - Uint64 wtime = (((Uint64)dwHighDateTime << 32) | dwLowDateTime); - - // Clamp the windows time range to the SDL_Time min/max - wtime = SDL_clamp(wtime, wintime_min, wintime_max); - - return (SDL_Time)(wtime - DELTA_EPOCH_1601_100NS) * 100; -} -- cgit v1.2.3