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time: Use a function instead of properties to retrieve the system date and time locale info

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This allows applications to re-query the values if the system locale is changed during runtime, and better matches the other locale functions. A note is included in the documentation mentioning that this can be slow, as it has to call into OS functions.

Also allows for the removal of the init/quit time functions, as they are no longer needed.
This commit is contained in:
Frank Praznik 2024-05-08 13:32:37 -04:00
parent e909c0360f
commit 1f43c88220
14 changed files with 119 additions and 100 deletions
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32
include/SDL3/SDL_time.h
View File

@ -61,7 +61,7 @@ typedef struct SDL_DateTime
*
* \since This enum is available since SDL 3.0.0.
*
* \sa SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER
* \sa SDL_GetDateTimeLocalePreferences
*/
typedef enum SDL_DateFormat
{
@ -75,7 +75,7 @@ typedef enum SDL_DateFormat
*
* \since This enum is available since SDL 3.0.0.
*
* \sa SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER
* \sa SDL_GetDateTimeLocalePreferences
*/
typedef enum SDL_TimeFormat
{
@ -83,28 +83,20 @@ typedef enum SDL_TimeFormat
SDL_TIME_FORMAT_12HR = 1 /**< 12 hour time */
} SDL_TimeFormat;
/* Global date/time properties. */
/**
* The SDL_DateFormat to use as the preferred date display format for the
* current system locale.
* Gets the current preferred date and time format for the system locale.
*
* \since This macro is available since SDL 3.0.0.
* This might be a "slow" call that has to query the operating system. It's
* best to ask for this once and save the results. However, the preferred formats
* can change, usually because the user has changed a system preference outside of
* your program.
*
* \sa SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER
* \param dateFormat a pointer to the SDL_DateFormat to hold the returned date format, may be NULL
* \param timeFormat a pointer to the SDL_TimeFormat to hold the returned time format, may be NULL
*
* \since This function is available since SDL 3.0.0.
*/
#define SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER "SDL.time.date_format"
/**
* The SDL_TimeFormat to use as the preferred time display format for the
* current system locale.
*
* \since This macro is available since SDL 3.0.0.
*
* \sa SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER
*/
#define SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER "SDL.time.time_format"
extern DECLSPEC int SDLCALL SDL_GetDateTimeLocalePreferences(SDL_DateFormat *dateFormat, SDL_TimeFormat *timeFormat);
/**
* Gets the current value of the system realtime clock in nanoseconds since

3
src/SDL.c
View File

@ -53,7 +53,6 @@
#define SDL_INIT_EVERYTHING ~0U
/* Initialization/Cleanup routines */
#include "time/SDL_time_c.h"
#include "timer/SDL_timer_c.h"
#ifdef SDL_VIDEO_DRIVER_WINDOWS
extern int SDL_HelperWindowCreate(void);
@ -210,7 +209,6 @@ int SDL_InitSubSystem(Uint32 flags)
}
#endif
SDL_InitTime();
SDL_InitTicks();
/* Initialize the event subsystem */
@ -543,7 +541,6 @@ void SDL_Quit(void)
SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
SDL_QuitTicks();
SDL_QuitTime();
#ifdef SDL_USE_LIBDBUS
SDL_DBus_Quit();

1
src/dynapi/SDL_dynapi.sym
View File

@ -1015,6 +1015,7 @@ SDL3_0.0.0 {
SDL_wcsnstr;
SDL_wcsstr;
SDL_wcstol;
SDL_GetDateTimeLocalePreferences;
# extra symbols go here (don't modify this line)
local: *;
};

1
src/dynapi/SDL_dynapi_overrides.h
View File

@ -1039,3 +1039,4 @@
#define SDL_wcsnstr SDL_wcsnstr_REAL
#define SDL_wcsstr SDL_wcsstr_REAL
#define SDL_wcstol SDL_wcstol_REAL
#define SDL_GetDateTimeLocalePreferences SDL_GetDateTimeLocalePreferences_REAL

1
src/dynapi/SDL_dynapi_procs.h
View File

@ -1055,3 +1055,4 @@ SDL_DYNAPI_PROC(size_t,SDL_wcsnlen,(const wchar_t *a, size_t b),(a,b),return)
SDL_DYNAPI_PROC(wchar_t*,SDL_wcsnstr,(const wchar_t *a, const wchar_t *b, size_t c),(a,b,c),return)
SDL_DYNAPI_PROC(wchar_t*,SDL_wcsstr,(const wchar_t *a, const wchar_t *b),(a,b),return)
SDL_DYNAPI_PROC(long,SDL_wcstol,(const wchar_t *a, wchar_t **b, int c),(a,b,c),return)
SDL_DYNAPI_PROC(int,SDL_GetDateTimeLocalePreferences,(SDL_DateFormat *a, SDL_TimeFormat *b),(a,b),return)

29
src/time/SDL_time.c
View File

@ -22,8 +22,6 @@
#include "SDL_time_c.h"
static SDL_bool time_initialized;
/* The following algorithms are based on those of Howard Hinnant and are in the public domain.
*
* http://howardhinnant.github.io/date_algorithms.html
@ -59,32 +57,19 @@ Sint64 SDL_CivilToDays(int year, int month, int day, int *day_of_week, int *day_
return z;
}
void SDL_InitTime()
int SDL_GetDateTimeLocalePreferences(SDL_DateFormat *dateFormat, SDL_TimeFormat *timeFormat)
{
if (time_initialized) {
return;
}
/* Default to ISO 8061 date format, as it is unambiguous, and 24 hour time. */
SDL_DateFormat dateFormat = SDL_DATE_FORMAT_YYYYMMDD;
SDL_TimeFormat timeFormat = SDL_TIME_FORMAT_24HR;
SDL_PropertiesID props = SDL_GetGlobalProperties();
SDL_GetSystemTimeLocalePreferences(&dateFormat, &timeFormat);
if (!SDL_HasProperty(props, SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER)) {
SDL_SetNumberProperty(props, SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER, dateFormat);
if (dateFormat) {
*dateFormat = SDL_DATE_FORMAT_YYYYMMDD;
}
if (!SDL_HasProperty(props, SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER)) {
SDL_SetNumberProperty(props, SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER, timeFormat);
if (timeFormat) {
*timeFormat = SDL_TIME_FORMAT_24HR;
}
time_initialized = SDL_TRUE;
}
SDL_GetSystemTimeLocalePreferences(dateFormat, timeFormat);
void SDL_QuitTime()
{
time_initialized = SDL_FALSE;
return 0;
}
int SDL_GetDaysInMonth(int year, int month)

3
src/time/SDL_time_c.h
View File

@ -26,9 +26,6 @@
#define SDL_SECONDS_PER_DAY 86400
extern void SDL_InitTime(void);
extern void SDL_QuitTime(void);
/* 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).
*/

16
src/time/n3ds/SDL_systime.c
View File

@ -86,15 +86,23 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
return;
}
*df = LANG_TO_DATE_FORMAT[system_language];
*tf = SDL_TIME_FORMAT_24HR;
if (df) {
*df = LANG_TO_DATE_FORMAT[system_language];
}
if (tf) {
*tf = SDL_TIME_FORMAT_24HR;
}
/* Only American English (en_US) uses MM/DD/YYYY and 12hr system, this gets
the formats wrong for canadians though (en_CA) */
if (system_language == CFG_LANGUAGE_EN &&
R_SUCCEEDED(has_region) && is_north_america) {
*df = SDL_DATE_FORMAT_MMDDYYYY;
*tf = SDL_TIME_FORMAT_12HR;
if (df) {
*df = SDL_DATE_FORMAT_MMDDYYYY;
}
if (tf) {
*tf = SDL_TIME_FORMAT_12HR;
}
}
}

4
src/time/psp/SDL_systime.c
View File

@ -34,7 +34,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
{
int val;
if (sceUtilityGetSystemParamInt(PSP_SYSTEMPARAM_ID_INT_DATE_FORMAT, &val) == 0) {
if (df && sceUtilityGetSystemParamInt(PSP_SYSTEMPARAM_ID_INT_DATE_FORMAT, &val) == 0) {
switch (val) {
case PSP_SYSTEMPARAM_DATE_FORMAT_YYYYMMDD:
*df = SDL_DATE_FORMAT_YYYYMMDD;
@ -50,7 +50,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
}
}
if (sceUtilityGetSystemParamInt(PSP_SYSTEMPARAM_ID_INT_TIME_FORMAT, &val) == 0) {
if (tf && sceUtilityGetSystemParamInt(PSP_SYSTEMPARAM_ID_INT_TIME_FORMAT, &val) == 0) {
switch (val) {
case PSP_SYSTEMPARAM_TIME_FORMAT_24HR:
*tf = SDL_TIME_FORMAT_24HR;

84
src/time/unix/SDL_systime.c
View File

@ -40,54 +40,58 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
* Android didn't add this until SDK version 26, so a check is needed...
*/
#ifdef HAVE_NL_LANGINFO
const char *s = nl_langinfo(D_FMT);
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;
/* 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:
s = nl_langinfo(T_FMT);
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;
/* 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;
}
}
}
}

4
src/time/vita/SDL_systime.c
View File

@ -39,7 +39,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
SDL_zero(bootParam);
sceAppUtilInit(&initParam, &bootParam);
if (sceAppUtilSystemParamGetInt(SCE_SYSTEM_PARAM_ID_DATE_FORMAT, &val) == 0) {
if (df && sceAppUtilSystemParamGetInt(SCE_SYSTEM_PARAM_ID_DATE_FORMAT, &val) == 0) {
switch (val) {
case SCE_SYSTEM_PARAM_DATE_FORMAT_YYYYMMDD:
*df = SDL_DATE_FORMAT_YYYYMMDD;
@ -55,7 +55,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
}
}
if (sceAppUtilSystemParamGetInt(SCE_SYSTEM_PARAM_ID_DATE_FORMAT, &val) == 0) {
if (tf && sceAppUtilSystemParamGetInt(SCE_SYSTEM_PARAM_ID_DATE_FORMAT, &val) == 0) {
switch (val) {
case SCE_SYSTEM_PARAM_TIME_FORMAT_24HR:
*tf = SDL_TIME_FORMAT_24HR;

4
src/time/windows/SDL_systime.c
View File

@ -38,7 +38,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
{
WCHAR str[80]; /* Per the docs, the time and short date format strings can be a max of 80 characters. */
if (GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SSHORTDATE, str, sizeof(str) / sizeof(WCHAR))) {
if (df && GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_SSHORTDATE, str, sizeof(str) / sizeof(WCHAR))) {
LPWSTR s = str;
while (*s) {
switch (*s++) {
@ -60,7 +60,7 @@ void SDL_GetSystemTimeLocalePreferences(SDL_DateFormat *df, SDL_TimeFormat *tf)
found_date:
/* Figure out the preferred system date format. */
if (GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STIMEFORMAT, str, sizeof(str) / sizeof(WCHAR))) {
if (tf && GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STIMEFORMAT, str, sizeof(str) / sizeof(WCHAR))) {
LPWSTR s = str;
while (*s) {
switch (*s++) {

20
test/testautomation_time.c
View File

@ -169,6 +169,26 @@ static int time_dateTimeUtilities(void *arg)
SDLTest_AssertPass("Call to SDL_TimeFromWindows()");
SDLTest_AssertCheck(ticks > 0 && ticks <= SDL_MAX_TIME, "Check result value, expected >0 && <=%" SDL_PRIs64 ", got: %" SDL_PRIs64, SDL_MAX_TIME, ticks);
/* Test time locale functions */
SDL_DateFormat dateFormat;
SDL_TimeFormat timeFormat;
result = SDL_GetDateTimeLocalePreferences(&dateFormat, &timeFormat);
SDLTest_AssertPass("Call to SDL_GetDateTimeLocalePreferences(&dateFormat, &timeFormat)");
SDLTest_AssertCheck(result == 0, "Check result value, expected 0, got: %i", result);
result = SDL_GetDateTimeLocalePreferences(&dateFormat, NULL);
SDLTest_AssertPass("Call to SDL_GetDateTimeLocalePreferences(&dateFormat, NULL)");
SDLTest_AssertCheck(result == 0, "Check result value, expected 0, got: %i", result);
result = SDL_GetDateTimeLocalePreferences(NULL, &timeFormat);
SDLTest_AssertPass("Call to SDL_GetDateTimeLocalePreferences(NULL, &timeFormat)");
SDLTest_AssertCheck(result == 0, "Check result value, expected 0, got: %i", result);
result = SDL_GetDateTimeLocalePreferences(NULL, NULL);
SDLTest_AssertPass("Call to SDL_GetDateTimeLocalePreferences(NULL, NULL)");
SDLTest_AssertCheck(result == 0, "Check result value, expected 0, got: %i", result);
return TEST_COMPLETED;
}

17
test/testtime.c
View File

@ -79,6 +79,18 @@ static void RenderDateTime(SDL_Renderer *r)
SDLTest_DrawString(r, 10, 15, str);
SDL_TimeToDateTime(ticks, &dt, SDL_TRUE);
if (time_format) {
if (dt.hour > 12) { /* PM */
dt.hour -= 12;
postfix = TIMEPOST[2];
} else {
if (!dt.hour) { /* AM */
dt.hour = 12; /* Midnight */
}
postfix = TIMEPOST[1];
}
}
SDL_snprintf(str, sizeof(str), "Local: %s %02d %s %04d (%s) %02d:%02d:%02d.%09d%s %+05d",
WDAY[dt.day_of_week], dt.day, MNAME[dt.month - 1], dt.year, short_date,
dt.hour, dt.minute, dt.second, dt.nanosecond, postfix,
@ -154,8 +166,7 @@ int main(int argc, char *argv[])
goto quit;
}
time_format = SDL_GetNumberProperty(SDL_GetGlobalProperties(), SDL_PROP_GLOBAL_SYSTEM_TIME_FORMAT_NUMBER, SDL_TIME_FORMAT_24HR);
date_format = SDL_GetNumberProperty(SDL_GetGlobalProperties(), SDL_PROP_GLOBAL_SYSTEM_DATE_FORMAT_NUMBER, SDL_DATE_FORMAT_YYYYMMDD);
SDL_GetDateTimeLocalePreferences(&date_format, &time_format);
/* Main render loop */
done = 0;
@ -196,6 +207,8 @@ int main(int argc, char *argv[])
default:
break;
}
} else if (event.type == SDL_EVENT_LOCALE_CHANGED) {
SDL_GetDateTimeLocalePreferences(&date_format, &time_format);
}
}