Merge commit '411251c6242b04119edc41ce83f09f0714e2d32b' as 'external/SDL'

2026-05-13 17:47:57 +02:00
parent d057a31269 411251c624
commit c8d2b3677f
2245 changed files with 975842 additions and 0 deletions
@@ -0,0 +1,216 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2026 Sam Lantinga <slouken@libsdl.org>
+
+  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"
+
+#ifdef SDL_TIME_UNIX
+
+#include "../SDL_time_c.h"
+#include <errno.h>
+#ifndef SDL_PLATFORM_DOS
+#include <langinfo.h>
+#endif
+#include <sys/time.h>
+#include <time.h>
+#include <unistd.h>
+
+#if !defined(HAVE_CLOCK_GETTIME) && defined(SDL_PLATFORM_APPLE)
+#include <mach/clock.h>
+#include <mach/mach.h>
+#include <mach/mach_time.h>
+#endif
+
+void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
+{
+    /* This *should* be well-supported aside from very old legacy systems, but apparently
+     * Android didn't add this until SDK version 26, so a check is needed...
+     */
+#ifdef HAVE_NL_LANGINFO
+    if (df) {
+        const char *s = nl_langinfo(D_FMT);
+
+        // Figure out the preferred system date format from the first format character.
+        if (s) {
+            while (*s) {
+                switch (*s++) {
+                case 'Y':
+                case 'y':
+                case 'F':
+                case 'C':
+                    *df = SDL_DATE_FORMAT_YYYYMMDD;
+                    goto found_date;
+                case 'd':
+                case 'e':
+                    *df = SDL_DATE_FORMAT_DDMMYYYY;
+                    goto found_date;
+                case 'b':
+                case 'D':
+                case 'h':
+                case 'm':
+                    *df = SDL_DATE_FORMAT_MMDDYYYY;
+                    goto found_date;
+                default:
+                    break;
+                }
+            }
+        }
+    }
+
+found_date:
+
+    if (tf) {
+        const char *s = nl_langinfo(T_FMT);
+
+        // Figure out the preferred system date format.
+        if (s) {
+            while (*s) {
+                switch (*s++) {
+                case 'H':
+                case 'k':
+                case 'T':
+                    *tf = SDL_TIME_FORMAT_24HR;
+                    return;
+                case 'I':
+                case 'l':
+                case 'r':
+                    *tf = SDL_TIME_FORMAT_12HR;
+                    return;
+                default:
+                    break;
+                }
+            }
+        }
+    }
+#endif
+}
+
+bool SDL_GetCurrentTime(SDL_Time *ticks)
+{
+    CHECK_PARAM(!ticks) {
+        return SDL_InvalidParamError("ticks");
+    }
+#ifdef HAVE_CLOCK_GETTIME
+    struct timespec tp;
+
+    if (clock_gettime(CLOCK_REALTIME, &tp) == 0) {
+        //tp.tv_sec = SDL_min(tp.tv_sec, SDL_NS_TO_SECONDS(SDL_MAX_TIME) - 1);
+        *ticks = SDL_SECONDS_TO_NS(tp.tv_sec) + tp.tv_nsec;
+        return true;
+    }
+
+    SDL_SetError("Failed to retrieve system time (%i)", errno);
+
+#elif defined(SDL_PLATFORM_APPLE)
+    clock_serv_t cclock;
+    int ret = host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+    if (ret == 0) {
+        mach_timespec_t mts;
+
+        SDL_zero(mts);
+        ret = clock_get_time(cclock, &mts);
+        if (ret == 0) {
+            // mach_timespec_t tv_sec is 32-bit, so no overflow possible
+            *ticks = SDL_SECONDS_TO_NS(mts.tv_sec) + mts.tv_nsec;
+        }
+        mach_port_deallocate(mach_task_self(), cclock);
+
+        if (!ret) {
+            return true;
+        }
+    }
+
+    SDL_SetError("Failed to retrieve system time (%i)", ret);
+
+#else
+    struct timeval tv;
+    SDL_zero(tv);
+    if (gettimeofday(&tv, NULL) == 0) {
+        tv.tv_sec = SDL_min(tv.tv_sec, SDL_NS_TO_SECONDS(SDL_MAX_TIME) - 1);
+        *ticks = SDL_SECONDS_TO_NS(tv.tv_sec) + SDL_US_TO_NS(tv.tv_usec);
+        return true;
+    }
+
+    SDL_SetError("Failed to retrieve system time (%i)", errno);
+#endif
+
+    return false;
+}
+
+bool SDL_TimeToDateTime(SDL_Time ticks, SDL_DateTime *dt, bool localTime)
+{
+#if defined (HAVE_GMTIME_R) || defined(HAVE_LOCALTIME_R)
+    struct tm tm_storage;
+#endif
+    struct tm *tm = NULL;
+
+    CHECK_PARAM(!dt) {
+        return SDL_InvalidParamError("dt");
+    }
+
+    const time_t tval = (time_t)SDL_NS_TO_SECONDS(ticks);
+
+    if (localTime) {
+#ifdef HAVE_LOCALTIME_R
+        tm = localtime_r(&tval, &tm_storage);
+#else
+        tm = localtime(&tval);
+#endif
+    } else {
+#ifdef HAVE_GMTIME_R
+        tm = gmtime_r(&tval, &tm_storage);
+#else
+        tm = gmtime(&tval);
+#endif
+    }
+
+    if (tm) {
+        dt->year = tm->tm_year + 1900;
+        dt->month = tm->tm_mon + 1;
+        dt->day = tm->tm_mday;
+        dt->hour = tm->tm_hour;
+        dt->minute = tm->tm_min;
+        dt->second = tm->tm_sec;
+        dt->nanosecond = ticks % SDL_NS_PER_SECOND;
+        dt->day_of_week = tm->tm_wday;
+
+        /* tm_gmtoff wasn't formally standardized until POSIX.1-2024, but practically it has been available on desktop
+         * *nix platforms such as Linux/glibc, FreeBSD, OpenBSD, NetBSD, OSX/macOS, and others since the 1990s.
+         *
+         * The notable exception is Solaris, where the timezone offset must still be retrieved in the strictly POSIX.1-2008
+         * compliant way.
+         */
+#if (_POSIX_VERSION >= 202405L) || (!defined(sun) && !defined(__sun))
+        dt->utc_offset = (int)tm->tm_gmtoff;
+#else
+        if (localTime) {
+            tzset();
+            dt->utc_offset = (int)timezone;
+        } else {
+            dt->utc_offset = 0;
+        }
+#endif
+
+        return true;
+    }
+
+    return SDL_SetError("SDL_DateTime conversion failed (%i)", errno);
+}
+
+#endif // SDL_TIME_UNIX