mirror of https://github.com/encounter/SDL.git
104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../SDL_internal.h"
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#include "SDL_syslocale.h"
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#include "SDL_hints.h"
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static SDL_Locale *
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build_locales_from_csv_string(char *csv)
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{
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size_t num_locales = 1; /* at least one */
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size_t slen;
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size_t alloclen;
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char *ptr;
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SDL_Locale *loc;
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SDL_Locale *retval;
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if (!csv || !csv[0]) {
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return NULL; /* nothing to report */
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}
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for (ptr = csv; *ptr; ptr++) {
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if (*ptr == ',') {
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num_locales++;
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}
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}
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num_locales++; /* one more for terminator */
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slen = ((size_t) (ptr - csv)) + 1; /* strlen(csv) + 1 */
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alloclen = slen + (num_locales * sizeof (SDL_Locale));
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loc = retval = (SDL_Locale *) SDL_calloc(1, alloclen);
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if (!retval) {
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SDL_OutOfMemory();
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return NULL; /* oh well */
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}
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ptr = (char *) (retval + num_locales);
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SDL_strlcpy(ptr, csv, slen);
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while (SDL_TRUE) { /* parse out the string */
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while (*ptr == ' ') ptr++; /* skip whitespace. */
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if (*ptr == '\0') {
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break;
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}
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loc->language = ptr++;
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while (SDL_TRUE) {
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const char ch = *ptr;
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if (ch == '_') {
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*(ptr++) = '\0';
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loc->country = ptr;
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} else if (ch == ' ') {
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*(ptr++) = '\0'; /* trim ending whitespace and keep going. */
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} else if (ch == ',') {
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*(ptr++) = '\0';
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loc++;
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break;
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} else if (ch == '\0') {
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loc++;
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break;
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} else {
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ptr++; /* just keep going, still a valid string */
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}
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}
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}
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return retval;
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}
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SDL_Locale *
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SDL_GetPreferredLocales(void)
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{
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char locbuf[128]; /* enough for 21 "xx_YY," language strings. */
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const char *hint = SDL_GetHint(SDL_HINT_PREFERRED_LOCALES);
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if (hint) {
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SDL_strlcpy(locbuf, hint, sizeof (locbuf));
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} else {
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SDL_zeroa(locbuf);
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SDL_SYS_GetPreferredLocales(locbuf, sizeof (locbuf));
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}
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return build_locales_from_csv_string(locbuf);
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}
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/* vi: set ts=4 sw=4 expandtab: */
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