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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889/****wcscoll.c - Collate wide-character locale strings** Copyright (c) Microsoft Corporation. All rights reserved.**Purpose:* Compare two wchar_t strings using the locale LC_COLLATE information.********************************************************************************/#include <corecrt_internal.h>#include <ctype.h>#include <locale.h>#include <string.h>
/****int wcscoll() - Collate wide-character locale strings**Purpose:* Compare two wchar_t strings using the locale LC_COLLATE information.* In the C locale, wcscmp() is used to make the comparison.**Entry:* const wchar_t *s1 = pointer to the first string* const wchar_t *s2 = pointer to the second string**Exit:* -1 = first string less than second string* 0 = strings are equal* 1 = first string greater than second string* Returns _NLSCMPERROR is something went wrong* This range of return values may differ from other *cmp/*coll functions.**Exceptions:* Input parameters are validated. Refer to the validation section of the function.********************************************************************************/
extern "C" int __cdecl _wcscoll_l ( const wchar_t *_string1, const wchar_t *_string2, _locale_t plocinfo ){ int ret; _LocaleUpdate _loc_update(plocinfo);
/* validation section */ _VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR); _VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR);
if ( _loc_update.GetLocaleT()->locinfo->locale_name[LC_COLLATE] == nullptr ) return (wcscmp(_string1, _string2));
if ( 0 == (ret = __acrt_CompareStringW( _loc_update.GetLocaleT()->locinfo->locale_name[LC_COLLATE], SORT_STRINGSORT, _string1, -1, _string2, -1)) ) { errno = EINVAL; return _NLSCMPERROR; }
return (ret - 2);
}
extern "C" int __cdecl wcscoll ( const wchar_t *_string1, const wchar_t *_string2 ){ if (!__acrt_locale_changed()) { /* validation section */ _VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR); _VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR);
return (wcscmp(_string1, _string2)); } else { return _wcscoll_l(_string1, _string2, nullptr); }}