String Path::GetTruePath(RCString p) {
#if UCFG_USE_POSIX
char buf[PATH_MAX];
for (const char *psz = p;; psz = buf) {
int len = ::readlink(psz, buf, sizeof(buf)-1);
if (len == -1) {
if (errno == EINVAL)
return psz;
CCheck(-1);
}
buf[len] = 0;
}
#elif UCFG_WIN32_FULL
TCHAR buf[_MAX_PATH];
DWORD len = ::GetLongPathName(p, buf, _countof(buf)-1);
Win32Check(len != 0);
buf[len] = 0;
typedef DWORD (WINAPI *PFN_GetFinalPathNameByHandle)(HANDLE hFile, LPTSTR lpszFilePath, DWORD cchFilePath, DWORD dwFlags);
DlProcWrap<PFN_GetFinalPathNameByHandle> pfn("KERNEL32.DLL", EXT_WINAPI_WA_NAME(GetFinalPathNameByHandle));
if (!pfn)
return buf;
TCHAR buf2[_MAX_PATH];
File file;
file.Attach(::CreateFile(buf, 0, 0, 0, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, 0));
len = pfn(Handle(file), buf2, _countof(buf2)-1, 0);
Win32Check(len != 0);
buf2[len] = 0;
#if UCFG_USE_REGEX
wcmatch m;
if (regex_search(buf2, m, s_reDosName))
return m[1];
#else
String sbuf(buf2); //!!! incoplete check, better to use Regex
int idx = sbuf.Find(':');
if (idx != -1)
return sbuf.Mid(idx-1);
#endif
return buf2;
#else
return p;
#endif
}
