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Added support for printing wide strings using "%ls" syntax

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(cherry picked from commit 128ca7016018178c0c3231db7db2005dbf234068)
This commit is contained in:
Sam Lantinga 2023-05-26 13:57:49 -07:00
parent 9dea06f5b5
commit 7308325559
2 changed files with 33 additions and 14 deletions
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31
src/stdlib/SDL_string.c
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@ -1514,6 +1514,19 @@ static size_t SDL_PrintString(char *text, size_t maxlen, SDL_FormatInfo *info, c
return length; return length;
} }
static size_t SDL_PrintStringW(char *text, size_t maxlen, SDL_FormatInfo *info, const wchar_t *wide_string)
{
size_t length = 0;
if (wide_string) {
char *string = SDL_iconv_string("UTF-8", "WCHAR_T", (char *)(wide_string), (SDL_wcslen(wide_string) + 1) * sizeof(*wide_string));
length = SDL_PrintString(TEXT_AND_LEN_ARGS, info, string);
SDL_free(string);
} else {
length = SDL_PrintString(TEXT_AND_LEN_ARGS, info, NULL);
}
return length;
}
static void SDL_IntPrecisionAdjust(char *num, size_t maxlen, SDL_FormatInfo *info) static void SDL_IntPrecisionAdjust(char *num, size_t maxlen, SDL_FormatInfo *info)
{ /* left-pad num with zeroes. */ { /* left-pad num with zeroes. */
size_t sz, pad, have_sign; size_t sz, pad, have_sign;
@ -1831,23 +1844,17 @@ int SDL_vsnprintf(SDL_OUT_Z_CAP(maxlen) char *text, size_t maxlen, const char *f
done = SDL_TRUE; done = SDL_TRUE;
break; break;
case 'S': case 'S':
{
/* In practice this is used on Windows for WCHAR strings */
wchar_t *wide_arg = va_arg(ap, wchar_t *);
if (wide_arg) {
char *arg = SDL_iconv_string("UTF-8", "UTF-16LE", (char *)(wide_arg), (SDL_wcslen(wide_arg) + 1) * sizeof(*wide_arg));
info.pad_zeroes = SDL_FALSE; info.pad_zeroes = SDL_FALSE;
length += SDL_PrintString(TEXT_AND_LEN_ARGS, &info, arg); length += SDL_PrintStringW(TEXT_AND_LEN_ARGS, &info, va_arg(ap, wchar_t *));
SDL_free(arg);
} else {
info.pad_zeroes = SDL_FALSE;
length += SDL_PrintString(TEXT_AND_LEN_ARGS, &info, NULL);
}
done = SDL_TRUE; done = SDL_TRUE;
} break; break;
case 's': case 's':
info.pad_zeroes = SDL_FALSE; info.pad_zeroes = SDL_FALSE;
if (inttype > DO_INT) {
length += SDL_PrintStringW(TEXT_AND_LEN_ARGS, &info, va_arg(ap, wchar_t *));
} else {
length += SDL_PrintString(TEXT_AND_LEN_ARGS, &info, va_arg(ap, char *)); length += SDL_PrintString(TEXT_AND_LEN_ARGS, &info, va_arg(ap, char *));
}
done = SDL_TRUE; done = SDL_TRUE;
break; break;
default: default:

12
test/testautomation_stdlib.c
View file

@ -62,6 +62,18 @@ int stdlib_snprintf(void *arg)
SDLTest_AssertCheck(SDL_strcmp(text, expected) == 0, "Check text, expected: %s, got: %s", expected, text); SDLTest_AssertCheck(SDL_strcmp(text, expected) == 0, "Check text, expected: %s, got: %s", expected, text);
SDLTest_AssertCheck(result == SDL_strlen(text), "Check result value, expected: %d, got: %d", (int)SDL_strlen(text), result); SDLTest_AssertCheck(result == SDL_strlen(text), "Check result value, expected: %d, got: %d", (int)SDL_strlen(text), result);
result = SDL_snprintf(text, sizeof(text), "%S", L"foo");
expected = "foo";
SDLTest_AssertPass("Call to SDL_snprintf(\"%%S\", \"foo\")");
SDLTest_AssertCheck(SDL_strcmp(text, expected) == 0, "Check text, expected: %s, got: %s", expected, text);
SDLTest_AssertCheck(result == SDL_strlen(text), "Check result value, expected: %d, got: %d", (int)SDL_strlen(text), result);
result = SDL_snprintf(text, sizeof(text), "%ls", L"foo");
expected = "foo";
SDLTest_AssertPass("Call to SDL_snprintf(\"%%ls\", \"foo\")");
SDLTest_AssertCheck(SDL_strcmp(text, expected) == 0, "Check text, expected: %s, got: %s", expected, text);
SDLTest_AssertCheck(result == SDL_strlen(text), "Check result value, expected: %d, got: %d", (int)SDL_strlen(text), result);
result = SDL_snprintf(text, 2, "%s", "foo"); result = SDL_snprintf(text, 2, "%s", "foo");
expected = "f"; expected = "f";
SDLTest_AssertPass("Call to SDL_snprintf(\"%%s\", \"foo\") with buffer size 2"); SDLTest_AssertPass("Call to SDL_snprintf(\"%%s\", \"foo\") with buffer size 2");