#include "../../SDL_internal.h"
#include "../../core/windows/SDL_windows.h"
#include "../SDL_syslocale.h"

Include dependency graph for SDL_syslocale.c:

Macros
#define	MUI_LANGUAGE_NAME 0x8

Typedefs
typedef BOOL(WINAPI *	pfnGetUserPreferredUILanguages) (DWORD, PULONG, WCHAR *, PULONG)

Functions
static void	SDL_SYS_GetPreferredLocales_winxp (char *buf, size_t buflen)

static void	SDL_SYS_GetPreferredLocales_vista (char *buf, size_t buflen)

void	SDL_SYS_GetPreferredLocales (char *buf, size_t buflen)

Variables
static pfnGetUserPreferredUILanguages	pGetUserPreferredUILanguages = NULL

static HMODULE	kernel32 = 0

Macro Definition Documentation

◆ MUI_LANGUAGE_NAME

#define MUI_LANGUAGE_NAME 0x8

Definition at line 28 of file SDL_syslocale.c.

Typedef Documentation

◆ pfnGetUserPreferredUILanguages

typedef BOOL(WINAPI * pfnGetUserPreferredUILanguages) (DWORD, PULONG, WCHAR *, PULONG)

Definition at line 26 of file SDL_syslocale.c.

Function Documentation

◆ SDL_SYS_GetPreferredLocales()

void SDL_SYS_GetPreferredLocales	(	char *	buf,
		size_t	buflen
	)

Definition at line 100 of file SDL_syslocale.c.

 {
     if (!kernel32) {
         kernel32 = LoadLibraryW(L"kernel32.dll");
         if (kernel32) {
             pGetUserPreferredUILanguages = (pfnGetUserPreferredUILanguages) GetProcAddress(kernel32, "GetUserPreferredUILanguages");
         }
     }
  
     if (pGetUserPreferredUILanguages == NULL) {
         SDL_SYS_GetPreferredLocales_winxp(buf, buflen);  /* this is always available */
     } else {
         SDL_SYS_GetPreferredLocales_vista(buf, buflen);  /* available on Vista and later. */
     }
 }

References kernel32, NULL, pGetUserPreferredUILanguages, SDL_SYS_GetPreferredLocales_vista(), and SDL_SYS_GetPreferredLocales_winxp().

◆ SDL_SYS_GetPreferredLocales_vista()

static void SDL_SYS_GetPreferredLocales_vista	(	char *	buf,
		size_t	buflen
	)

static

Definition at line 60 of file SDL_syslocale.c.

 {
     ULONG numlangs = 0;
     WCHAR *wbuf = NULL;
     ULONG wbuflen = 0;
     SDL_bool isstack;
  
     SDL_assert(pGetUserPreferredUILanguages != NULL);
     pGetUserPreferredUILanguages(MUI_LANGUAGE_NAME, &numlangs, NULL, &wbuflen);
  
     wbuf = SDL_small_alloc(WCHAR, wbuflen, &isstack);
     if (!wbuf) {
         SDL_OutOfMemory();
         return;
     }
  
     if (!pGetUserPreferredUILanguages(MUI_LANGUAGE_NAME, &numlangs, wbuf, &wbuflen)) {
         SDL_SYS_GetPreferredLocales_winxp(buf, buflen);  /* oh well, try the fallback. */
     } else {
         const ULONG endidx = (ULONG) SDL_min(buflen, wbuflen - 1);
         ULONG str_start = 0;
         ULONG i;
         for (i = 0; i < endidx; i++) {
             const char ch = (char) wbuf[i];  /* these should all be low-ASCII, safe to cast */
             if (ch == '\0') {
                 buf[i] = ',';  /* change null separators to commas */
                 str_start = i;
             } else if (ch == '-') {
                 buf[i] = '_';  /* change '-' to '_' */
             } else {
                 buf[i] = ch;   /* copy through as-is. */
             }
         }
         buf[str_start] = '\0';  /* terminate string, chop off final ',' */
     }
  
     SDL_small_free(wbuf, isstack);
 }

References i, MUI_LANGUAGE_NAME, NULL, pGetUserPreferredUILanguages, SDL_assert, SDL_min, SDL_OutOfMemory, SDL_small_alloc, SDL_small_free, and SDL_SYS_GetPreferredLocales_winxp().

Referenced by SDL_SYS_GetPreferredLocales().

◆ SDL_SYS_GetPreferredLocales_winxp()

static void SDL_SYS_GetPreferredLocales_winxp	(	char *	buf,
		size_t	buflen
	)

static

Definition at line 37 of file SDL_syslocale.c.

 {
     char lang[16];
     char country[16];
  
         const int langrc = GetLocaleInfoA(LOCALE_USER_DEFAULT,
                                       LOCALE_SISO639LANGNAME,
                                       lang, sizeof (lang));
  
         const int ctryrc =  GetLocaleInfoA(LOCALE_USER_DEFAULT,
                                        LOCALE_SISO3166CTRYNAME,
                                        country, sizeof (country));
  
     /* Win95 systems will fail, because they don't have LOCALE_SISO*NAME ... */
     if (langrc == 0) {
         SDL_SetError("Couldn't obtain language info");
     } else {
         SDL_snprintf(buf, buflen, "%s%s%s", lang, ctryrc ? "_" : "", ctryrc ? country : "");
     }
 }