mbslwr.cpp File Reference

#include <corecrt_internal.h>
#include <corecrt_internal_mbstring.h>
#include <corecrt_internal_securecrt.h>
#include <locale.h>
#include <string.h>

Include dependency graph for mbslwr.cpp:

Go to the source code of this file.

Functions
errno_t __cdecl	_mbslwr_s_l (unsigned char *string, size_t sizeInBytes, _locale_t plocinfo)
	errno_t (__cdecl _mbslwr_s)(unsigned char *string
unsigned char *__cdecl	_mbslwr_l (unsigned char *string, _locale_t plocinfo)
unsigned char *__cdecl	_mbslwr (unsigned char *string)

Variables
size_t	sizeInBytes

Function Documentation

_mbslwr()

unsigned char *__cdecl _mbslwr

(

unsigned char *

string

)

Definition at line 131 of file mbslwr.cpp.

{
    return (_mbslwr_s_l(string, (string == nullptr ? 0 : (size_t)-1), nullptr) == 0 ? string : nullptr);
}

_mbslwr_l()

unsigned char *__cdecl _mbslwr_l	(	unsigned char *	string,
		_locale_t	plocinfo
	)

Definition at line 123 of file mbslwr.cpp.

{
    return (_mbslwr_s_l(string, (string == nullptr ? 0 : (size_t)-1), plocinfo) == 0 ? string : nullptr);
}

_mbslwr_s_l()

errno_t __cdecl _mbslwr_s_l	(	unsigned char *	string,
		size_t	sizeInBytes,
		_locale_t	plocinfo
	)

Definition at line 42 of file mbslwr.cpp.

{
        size_t stringlen;
 
        /* validation section */
        _VALIDATE_RETURN_ERRCODE((string != nullptr && sizeInBytes > 0) || (string == nullptr && sizeInBytes == 0), EINVAL);
 
        if (string == nullptr)
        {
            /* nothing to do */
            return 0;
        }
 
        stringlen = strnlen((char *)string, sizeInBytes);
        if (stringlen >= sizeInBytes)
        {
            _RESET_STRING(string, sizeInBytes);
            _RETURN_DEST_NOT_NULL_TERMINATED(string, sizeInBytes);
        }
        _FILL_STRING(string, sizeInBytes, stringlen + 1);
 
        unsigned char *cp, *dst;
        _LocaleUpdate _loc_update(plocinfo);
 
        for (cp = string, dst = string; *cp != '\0'; ++cp)
        {
            if (_ismbblead_l(*cp, _loc_update.GetLocaleT()))
            {
 
 
                int retval;
                unsigned char ret[4];
                if ((retval = __acrt_LCMapStringA(
                                _loc_update.GetLocaleT(),
                                _loc_update.GetLocaleT()->mbcinfo->mblocalename,
                                LCMAP_LOWERCASE,
                                (const char *)cp,
                                2,
                                (char *)ret,
                                2,
                                _loc_update.GetLocaleT()->mbcinfo->mbcodepage,
                                TRUE )) == 0 )
                {
                    errno = EILSEQ;
                    _RESET_STRING(string, sizeInBytes);
                    return errno;
                }
 
                *(dst++) = ret[0];
                ++cp;
                if (retval > 1)
                {
                    *(dst++) = ret[1];
                }
 
 
            }
            else
            {
                /* single byte, macro version */
                *(dst++) = (unsigned char) _mbbtolower_l(*cp, _loc_update.GetLocaleT());
            }
        }
        /* null terminate the string */
        *dst = '\0';
 
        return 0;
}

Referenced by _mbslwr(), and _mbslwr_l().

errno_t()

errno_t

(

__cdecl

_mbslwr_s

)

Variable Documentation

sizeInBytes

size_t sizeInBytes

Initial value:

{
    return _mbslwr_s_l(string, sizeInBytes, nullptr)

Definition at line 117 of file mbslwr.cpp.

Referenced by _mbslwr_s_l(), _mbsnlen_l(), _strlwr_s(), _strlwr_s_l(), _strlwr_s_l_stat(), _strupr_s(), _strupr_s_l(), and _strupr_s_l_stat().