DWORD WINAPI GetLongPathNameU(LPCTSTR lpShortName, LPTSTR lpBuf, DWORD nBufferLength) {
WCHAR *pwszShortName = NULL;
WCHAR *pwBuf = NULL;
int n;
int lResult;
int lName = lstrlen(lpShortName);
int lNameNul = lName + 1;
int lwBuf = lNameNul + MAX_PATH; /* In most cases, the long path will be shorter than MAX_PATH. If not, the buffer will be extended below. */
DEBUG_ENTER(("GetLongPathNameU(\"%s\", %p, %d);\n", lpShortName, lpBuf, nBufferLength));
pwszShortName = MultiByteToNewWidePath(CP_UTF8, lpShortName);
if (!pwszShortName) {
out_of_mem:
RETURN_INT_COMMENT(0, ("Not enough memory\n"));
}
realloc_wBuf:
pwBuf = GlobalAlloc(GMEM_FIXED, sizeof(WCHAR) * lwBuf);
if (!pwBuf) {
free(pwszShortName);
goto out_of_mem;
}
lResult = (int)GetLongPathNameW(pwszShortName, pwBuf, lwBuf);
if (lResult > lwBuf) { /* In the possible but unlikely case that the result does not fit in pwBuf, */
GlobalFree(pwBuf); /* then extend the buffer and retry. */
lwBuf = lResult;
goto realloc_wBuf;
}
free(pwszShortName); /* We won't need this buffer anymore */
if (!lResult) {
GlobalFree(pwBuf);
RETURN_INT_COMMENT(0, ("GetLongPathNameW() failed\n"));
}
/* nRead = UnicodeToBytes(pwStr, len, buf, bufsize); */
n = WideCharToMultiByte(CP_UTF8, /* CodePage, (CP_ACP, CP_OEMCP, CP_UTF8, ...) */
0, /* dwFlags, */
pwBuf, /* lpWideCharStr, */
lResult + 1, /* cchWideChar, */
lpBuf, /* lpMultiByteStr, */
(int)nBufferLength, /* cbMultiByte, */
NULL, /* lpDefaultChar, */
NULL /* lpUsedDefaultChar */
);
GlobalFree(pwBuf);
if (!n) RETURN_INT_COMMENT(0, ("Failed to convert the Long name from Unicode\n"));
n -= 1; /* Do not count the final NUL */
/* Remove the long pathname \\?\ prefix, if it was not there before */
if ((!strncmp(lpBuf, "\\\\?\\", 4)) && strncmp(lpShortName, "\\\\?\\", 4)) {
n = TrimLongPathPrefix(lpBuf);
}
RETURN_INT_COMMENT(n, ("\"%s\"\n", lpBuf));
}
int _accessM(const char *pszName, int iMode, UINT cp) {
WCHAR *pwszName;
int iAccess;
/* Convert the pathname to a unicode string, with the proper extension prefixes if it's longer than 260 bytes */
pwszName = MultiByteToNewWidePath(cp, pszName);
if (!pwszName) return -1;
/* The C library returns errno=EINVAL for iMode X_OK.
As all files are executable in Windows, change it to an existence test. */
if (iMode == X_OK) iMode = F_OK;
iAccess = _waccess(pwszName, iMode);
free(pwszName);
return iAccess;
}
int chdirM(const char *pszDir, UINT cp) {
WCHAR *pwszDir;
BOOL bDone;
int iErr = 0;
DEBUG_ENTER(("chdir(\"%s\");\n", pszDir));
/* Convert the pathname to a unicode string, with the proper extension prefixes if it's longer than 260 bytes */
pwszDir = MultiByteToNewWidePath(cp, pszDir);
if (!pwszDir) return -1;
bDone = SetCurrentDirectoryW(pwszDir);
if (!bDone) {
errno = Win32ErrorToErrno();
iErr = -1;
}
free(pwszDir);
DEBUG_QUIET_LEAVE();
return iErr;
}
