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Added SDL_wcstol()

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This commit is contained in:
Sam Lantinga
2023-05-24 08:14:47 -07:00
parent 7602a3181e
commit 6c28546828
7 changed files with 76 additions and 21 deletions
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70
src/stdlib/SDL_string.c
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@@ -28,7 +28,7 @@
#include <psp2/kernel/clib.h>
#endif
#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOL) || !defined(HAVE_STRTOUL) || !defined(HAVE_STRTOD) || !defined(HAVE_STRTOLL) || !defined(HAVE_STRTOULL)
#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOL) || !defined(HAVE_WCSTOL) || !defined(HAVE_STRTOUL) || !defined(HAVE_STRTOD) || !defined(HAVE_STRTOLL) || !defined(HAVE_STRTOULL)
#define SDL_isupperhex(X) (((X) >= 'A') && ((X) <= 'F'))
#define SDL_islowerhex(X) (((X) >= 'a') && ((X) <= 'f'))
#endif
@@ -93,6 +93,50 @@ static size_t SDL_ScanLong(const char *text, int count, int radix, long *valuep)
}
#endif
#if !defined(HAVE_WCSTOL)
static size_t SDL_ScanLongW(const wchar_t *text, int count, int radix, long *valuep)
{
const wchar_t *textstart = text;
long value = 0;
SDL_bool negative = SDL_FALSE;
if (*text == '-') {
negative = SDL_TRUE;
++text;
}
if (radix == 16 && SDL_wcsncmp(text, L"0x", 2) == 0) {
text += 2;
}
for (;;) {
int v;
if (*text >= '0' && *text <= '9') {
v = *text - '0';
} else if (radix == 16 && SDL_isupperhex(*text)) {
v = 10 + (*text - 'A');
} else if (radix == 16 && SDL_islowerhex(*text)) {
v = 10 + (*text - 'a');
} else {
break;
}
value *= radix;
value += v;
++text;
if (count > 0 && (text - textstart) == count) {
break;
}
}
if (valuep && text > textstart) {
if (negative && value) {
*valuep = -value;
} else {
*valuep = value;
}
}
return text - textstart;
}
#endif
#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOUL) || !defined(HAVE_STRTOD)
static size_t SDL_ScanUnsignedLong(const char *text, int count, int radix, unsigned long *valuep)
{
@@ -530,6 +574,30 @@ int SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen)
#endif /* HAVE__WCSNICMP */
}
long SDL_wcstol(const wchar_t *string, wchar_t **endp, int base)
{
#ifdef HAVE_WCSTOL
return wcstol(string, endp, base);
#else
size_t len;
long value = 0;
if (!base) {
if ((SDL_wcslen(string) > 2) && (SDL_wcsncmp(string, L"0x", 2) == 0)) {
base = 16;
} else {
base = 10;
}
}
len = SDL_ScanLongW(string, 0, base, &value);
if (endp) {
*endp = (wchar_t *)string + len;
}
return value;
#endif /* HAVE_WCSTOL */
}
size_t SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
{
#ifdef HAVE_STRLCPY