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Added SDL_swprintf() and SDL_vswprintf()

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This commit is contained in:
Sam Lantinga
2023-05-24 09:41:22 -07:00
parent 6c28546828
commit c9d8a04945
8 changed files with 250 additions and 2 deletions
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55
src/stdlib/SDL_string.c
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@@ -1466,6 +1466,18 @@ int SDL_snprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, SDL_PRINTF_FOR
return retval;
}
int SDL_swprintf(SDL_OUT_Z_CAP(maxlen) wchar_t *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const wchar_t *fmt, ...)
{
va_list ap;
int retval;
va_start(ap, fmt);
retval = SDL_vswprintf(text, maxlen, fmt, ap);
va_end(ap);
return retval;
}
#if defined(HAVE_LIBC) && defined(__WATCOMC__)
/* _vsnprintf() doesn't ensure nul termination */
int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *fmt, va_list ap)
@@ -1979,6 +1991,49 @@ int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *f
#undef TEXT_AND_LEN_ARGS
#endif /* HAVE_VSNPRINTF */
int SDL_vswprintf(SDL_OUT_Z_CAP(maxlen) wchar_t *text, size_t maxlen, SDL_PRINTF_FORMAT_STRING const wchar_t *fmt, va_list ap)
{
char *text_utf8 = NULL, *fmt_utf8 = NULL;
int retval;
if (fmt) {
fmt_utf8 = SDL_iconv_string("UTF-8", "WCHAR_T", (const char *)fmt, (SDL_wcslen(fmt) + 1) * sizeof(wchar_t));
if (!fmt_utf8) {
return -1;
}
}
if (!maxlen) {
/* We still need to generate the text to find the final text length */
maxlen = 1024;
}
text_utf8 = (char *)SDL_malloc(maxlen * 4);
if (!text_utf8) {
SDL_free(fmt_utf8);
return -1;
}
retval = SDL_vsnprintf(text_utf8, maxlen * 4, fmt_utf8, ap);
if (retval >= 0) {
wchar_t *text_wchar = (wchar_t *)SDL_iconv_string("WCHAR_T", "UTF-8", text_utf8, SDL_strlen(text_utf8) + 1);
if (text_wchar) {
if (text) {
SDL_wcslcpy(text, text_wchar, maxlen);
}
retval = (int)SDL_wcslen(text_wchar);
SDL_free(text_wchar);
} else {
retval = -1;
}
}
SDL_free(text_utf8);
SDL_free(fmt_utf8);
return retval;
}
int SDL_asprintf(char **strp, SDL_PRINTF_FORMAT_STRING const char *fmt, ...)
{
va_list ap;