mirror of
https://github.com/Chuyu-Team/VC-LTL5.git
synced 2026-10-19 06:21:24 +08:00
mingkuang
75 lines
1.9 KiB
C++
75 lines
1.9 KiB
C++
/***
|
|
*mbsnextc.c - Get the next character in an MBCS string.
|
|
*
|
|
* Copyright (c) Microsoft Corporation. All rights reserved.
|
|
*
|
|
*Purpose:
|
|
* To return the value of the next character in an MBCS string.
|
|
*
|
|
*******************************************************************************/
|
|
#ifndef _MBCS
|
|
#error This file should only be compiled with _MBCS defined
|
|
#endif
|
|
|
|
#include <corecrt_internal_mbstring.h>
|
|
#include <locale.h>
|
|
#include <stdlib.h>
|
|
|
|
#pragma warning(disable:__WARNING_POTENTIAL_BUFFER_OVERFLOW_NULLTERMINATED) // 26018
|
|
|
|
/***
|
|
*_mbsnextc: Returns the next character in a string.
|
|
*
|
|
*Purpose:
|
|
* To return the value of the next character in an MBCS string.
|
|
* Does not advance pointer to the next character.
|
|
*
|
|
*Entry:
|
|
* unsigned char *s = string
|
|
*
|
|
*Exit:
|
|
* unsigned int next = next character.
|
|
*
|
|
*Exceptions:
|
|
* Input parameters are validated. Refer to the validation section of the function.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#if WindowsTargetPlatformMinVersion < WindowsTargetPlatformWindows6
|
|
extern "C" unsigned int __cdecl _mbsnextc_l(
|
|
const unsigned char *s,
|
|
_locale_t plocinfo
|
|
)
|
|
{
|
|
if (!plocinfo)
|
|
return _mbsnextc(s);
|
|
|
|
unsigned int next = 0;
|
|
//_LocaleUpdate _loc_update(plocinfo);
|
|
|
|
/* validation section */
|
|
_VALIDATE_RETURN(s != nullptr, EINVAL, 0);
|
|
|
|
/* don't skip forward 2 if the leadbyte is followed by EOS (dud string)
|
|
also don't assert as we are too low-level
|
|
*/
|
|
if ( _ismbblead_l(*s, plocinfo) && s[1]!='\0')
|
|
next = ((unsigned int) *s++) << 8;
|
|
|
|
next += (unsigned int) *s;
|
|
|
|
return(next);
|
|
}
|
|
|
|
_LCRT_DEFINE_IAT_SYMBOL(_mbsnextc_l);
|
|
#endif
|
|
|
|
#if 0
|
|
extern "C" unsigned int (__cdecl _mbsnextc)(
|
|
const unsigned char *s
|
|
)
|
|
{
|
|
return _mbsnextc_l(s, nullptr);
|
|
}
|
|
#endif
|