wcsncoll.cpp File Reference

#include <corecrt_internal.h>
#include <ctype.h>
#include <locale.h>
#include <string.h>

Include dependency graph for wcsncoll.cpp:

Go to the source code of this file.

Functions
int __cdecl	_wcsncoll_l (const wchar_t *_string1, const wchar_t *_string2, size_t count, _locale_t plocinfo)
int __cdecl	_wcsncoll (const wchar_t *_string1, const wchar_t *_string2, size_t count)

Function Documentation

_wcsncoll()

int __cdecl _wcsncoll	(	const wchar_t *	_string1,
		const wchar_t *	_string2,
		size_t	count
	)

Definition at line 83 of file wcsncoll.cpp.

{
    if (!__acrt_locale_changed())
    {
 
    /* validation section */
    _VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR);
    _VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR);
    _VALIDATE_RETURN(count <= INT_MAX, EINVAL, _NLSCMPERROR);
    return wcsncmp(_string1, _string2, count);
    }
    else
    {
        return _wcsncoll_l(_string1, _string2, count, nullptr);
    }
 
}

_wcsncoll_l()

int __cdecl _wcsncoll_l	(	const wchar_t *	_string1,
		const wchar_t *	_string2,
		size_t	count,
		_locale_t	plocinfo
	)

Definition at line 41 of file wcsncoll.cpp.

{
    int ret;
 
    if (!count)
    {
        return 0;
    }
 
    _LocaleUpdate _loc_update(plocinfo);
 
    /* validation section */
    _VALIDATE_RETURN(_string1 != nullptr, EINVAL, _NLSCMPERROR);
    _VALIDATE_RETURN(_string2 != nullptr, EINVAL, _NLSCMPERROR);
    _VALIDATE_RETURN(count <= INT_MAX, EINVAL, _NLSCMPERROR);
 
    if ( _loc_update.GetLocaleT()->locinfo->locale_name[LC_COLLATE] == nullptr )
    {
        return wcsncmp(_string1, _string2, count);
    }
 
    if ( 0 == (ret = __acrt_CompareStringW(
                    _loc_update.GetLocaleT()->locinfo->locale_name[LC_COLLATE],
                               SORT_STRINGSORT,
                               _string1,
                               (int)count,
                               _string2,
                               (int)count)) )
    {
        errno = EINVAL;
        return _NLSCMPERROR;
    }
 
    return (ret - 2);
 
}

Referenced by _wcsncoll().