Sven Balzer
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2026 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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static SDL_Locale **build_locales_from_csv_string(char *csv, int *count)
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{
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int i, num_locales;
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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 **result;
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if (count) {
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*count = 0;
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}
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while (csv && *csv && SDL_isspace(*csv)) {
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++csv;
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}
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if (!csv || !*csv) {
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return NULL; // nothing to report
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}
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num_locales = 1; // at least one
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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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slen = ((size_t)(ptr - csv)) + 1; // SDL_strlen(csv) + 1
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alloclen = ((num_locales + 1) * sizeof(SDL_Locale *)) + (num_locales * sizeof(SDL_Locale)) + slen;
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result = (SDL_Locale **)SDL_calloc(1, alloclen);
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if (!result) {
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return NULL; // oh well
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}
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loc = (SDL_Locale *)(result + (num_locales + 1));
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ptr = (char *)(loc + num_locales);
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SDL_memcpy(ptr, csv, slen);
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i = 0;
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result[i++] = loc;
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while (true) { // parse out the string
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while (SDL_isspace(*ptr)) {
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ptr++; // skip whitespace.
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}
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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 (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 (SDL_isspace(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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result[i++] = loc;
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break;
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} else if (ch == '\0') {
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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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if (count) {
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*count = num_locales;
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}
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return result;
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}
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SDL_Locale **SDL_GetPreferredLocales(int *count)
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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, count);
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}
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