homework-jianmu/2.0/deps/MsvcLibX/src/access.c

69 lines
2.9 KiB
C

/*****************************************************************************\
* *
* Filename access.c *
* *
* Description: WIN32 UTF-8 version of access *
* *
* Notes: *
* *
* History: *
* 2014-03-24 JFL Created this module. *
* 2014-07-02 JFL Added support for pathnames >= 260 characters. *
* *
* Copyright 2016 Hewlett Packard Enterprise Development LP *
* Licensed under the Apache 2.0 license - www.apache.org/licenses/LICENSE-2.0 *
\*****************************************************************************/
#define _CRT_SECURE_NO_WARNINGS 1 /* Avoid Visual C++ security warnings */
#include <errno.h>
#include <io.h>
#include "msvcStdio.h"
#include "msvclibx.h"
#include "msvcDebugm.h"
#include "msvcLimits.h"
#ifdef _WIN32
#include <windows.h>
/*---------------------------------------------------------------------------*\
* *
| Function access |
| |
| Description UTF-8 version of access |
| |
| Parameters char *pszName File name |
| int iMode Access mode to test |
| |
| Returns File handle |
| |
| Notes |
| |
| History |
| 2014-03-24 JFL Created this routine. |
| 2014-07-02 JFL Added support for pathnames >= 260 characters. |
* *
\*---------------------------------------------------------------------------*/
int _accessU(const char *pszName, int iMode) {
WCHAR wszName[PATH_MAX];
int n;
/* Convert the pathname to a unicode string, with the proper extension prefixes if it's longer than 260 bytes */
n = MultiByteToWidePath(CP_UTF8, /* CodePage, (CP_ACP, CP_OEMCP, CP_UTF8, ...) */
pszName, /* lpMultiByteStr, */
wszName, /* lpWideCharStr, */
COUNTOF(wszName) /* cchWideChar, */
);
if (!n) {
errno = Win32ErrorToErrno();
return -1;
}
return _waccess(wszName, iMode);
}
#endif /* defined(_WIN32) */