_C_STD_BEGIN
_CRTIMP2_PURE wchar_t __CLRCALL_PURE_OR_CDECL _Towlower(wchar_t _Ch, const _Ctypevec *_Ctype)
{ /* convert element to lower case */
wchar_t _Res = _Ch;
if (_Ch == WEOF)
;
else if (_Ctype->_LocaleName == NULL && _Ch < 256)
{ /* handle ASCII character in C locale */
if (L'A' <= _Ch && _Ch <= L'Z')
_Res = (wchar_t)(_Ch - L'A' + L'a');
}
else if (__crtLCMapStringW(_Ctype->_LocaleName, LCMAP_LOWERCASE,
&_Ch, 1, &_Res, 1) == 0)
_Res = _Ch;
return (_Res);
}
_CRTIMP2_PURE wchar_t __CLRCALL_PURE_OR_CDECL _Towupper(wchar_t _Ch, const _Ctypevec *_Ctype)
{ /* convert element to upper case */
wchar_t _Res = _Ch;
if (_Ch != WEOF)
{
if (_Ctype->_Hand == 0 && _Ch < 256)
{ /* handle ASCII character in C locale */
if (L'a' <= _Ch && _Ch <= L'z')
{
_Res = (wchar_t)(_Ch - L'a' + L'A');
}
}
else if (__crtLCMapStringW(_Ctype->_Hand, LCMAP_UPPERCASE, &_Ch, 1, &_Res, 1) == 0)
{
_Res = _Ch;
}
}
return (_Res);
}
wchar_t __cdecl _towlower_lk (
wchar_t c
)
{
#endif /* _MT */
wchar_t widechar;
if (c == WEOF)
return c;
if (__lc_handle[LC_CTYPE] == _CLOCALEHANDLE) {
if ( (c >= L'A') && (c <= L'Z') )
c = c - L'A' + L'a';
return c;
}
/* if checking case of c does not require API call, do it */
if (c < 256) {
if (!iswupper(c)) {
return c;
}
}
/* convert wide char to lowercase */
if ( 0 == __crtLCMapStringW( __lc_handle[LC_CTYPE],
LCMAP_LOWERCASE,
(LPCWSTR)&c,
1,
(LPWSTR)&widechar,
1,
0) )
{
return c;
}
return widechar;
}
static errno_t __cdecl _wcslwr_s_l_stat (
wchar_t * wsrc,
size_t sizeInWords,
_locale_t plocinfo
)
{
wchar_t *p; /* traverses string for C locale conversion */
wchar_t *wdst; /* wide version of string in alternate case */
int dstsize; /* size in wide chars of wdst string buffer (include null) */
errno_t e = 0;
size_t stringlen;
/* validation section */
_VALIDATE_RETURN_ERRCODE(wsrc != NULL, EINVAL);
stringlen = wcsnlen(wsrc, sizeInWords);
if (stringlen >= sizeInWords)
{
_RESET_STRING(wsrc, sizeInWords);
_RETURN_DEST_NOT_NULL_TERMINATED(wsrc, sizeInWords);
}
_FILL_STRING(wsrc, sizeInWords, stringlen + 1);
if ( plocinfo->locinfo->locale_name[LC_CTYPE] == NULL)
{
for ( p = wsrc ; *p ; p++ )
{
if ( (*p >= (wchar_t)L'A') && (*p <= (wchar_t)L'Z') )
{
*p -= L'A' - L'a';
}
}
return 0;
} /* C locale */
/* Inquire size of wdst string */
if ( (dstsize = __crtLCMapStringW(
plocinfo->locinfo->locale_name[LC_CTYPE],
LCMAP_LOWERCASE,
wsrc,
-1,
NULL,
0
)) == 0 )
{
errno = EILSEQ;
return errno;
}
if (sizeInWords < (size_t)dstsize)
{
_RESET_STRING(wsrc, sizeInWords);
_RETURN_BUFFER_TOO_SMALL(wsrc, sizeInWords);
}
/* Allocate space for wdst */
wdst = (wchar_t *)_calloca(dstsize, sizeof(wchar_t));
if (wdst == NULL)
{
errno = ENOMEM;
return errno;
}
/* Map wrc string to wide-character wdst string in alternate case */
if (__crtLCMapStringW(
plocinfo->locinfo->locale_name[LC_CTYPE],
LCMAP_LOWERCASE,
wsrc,
-1,
wdst,
dstsize
) != 0)
{
/* Copy wdst string to user string */
e = wcscpy_s(wsrc, sizeInWords, wdst);
}
else
{
e = errno = EILSEQ;
}
_freea(wdst);
return e;
}
_MRTIMP2_NCEEPURE size_t __CLRCALL_PURE_OR_CDECL _Wcsxfrm(
wchar_t* _string1,
wchar_t* _end1,
const wchar_t* _string2,
const wchar_t* _end2,
const _Collvec* ploc
) {
size_t _n1 = _end1 - _string1;
size_t _n2 = _end2 - _string2;
size_t size = (size_t) - 1;
unsigned char* bbuffer = NULL;
LCID handle;
if (ploc == 0) {
handle = ___lc_handle_func()[LC_COLLATE];
} else {
handle = ploc->_Hand;
}
if (handle == _CLOCALEHANDLE) {
if (_n2 <= _n1) {
memcpy(_string1, _string2, _n2 * sizeof(wchar_t));
}
size = _n2;
} else {
/*
* When using LCMAP_SORTKEY, LCMapStringW handles BYTES not wide
* chars. We use a byte buffer to hold bytes and then convert the
* byte string to a wide char string and return this so it can be
* compared using wcscmp(). User's buffer is _n1 wide chars, so
* use an internal buffer of _n1 bytes.
*/
if (NULL != (bbuffer = (unsigned char*)_malloc_crt(_n1))) {
if (0 == (size = __crtLCMapStringW(NULL, handle,
LCMAP_SORTKEY,
_string2,
(int)_n2,
(wchar_t*)bbuffer,
(int)_n1,
___lc_collate_cp_func()))) {
/* buffer not big enough, get size required. */
if (0 == (size = __crtLCMapStringW(NULL, handle,
LCMAP_SORTKEY,
_string2,
(int)_n2,
NULL,
0,
___lc_collate_cp_func()))) {
size = INT_MAX; /* default error */
}
} else {
size_t i;
/* string successfully mapped, convert to wide char */
for (i = 0; i < size; i++) {
_string1[i] = (wchar_t)bbuffer[i];
}
}
}
}
if (bbuffer) {
_free_crt(bbuffer);
}
return (size_t)size;
}
