CString FileSystem::GetExeFileName(const char* argv0)
{
CString exename;
exename.Reserve(1024 - 1);
exename[1024 - 1] = '\0';
#ifdef WIN32
GetModuleFileName(nullptr, exename, 1024);
#else
// Linux
int r = readlink("/proc/self/exe", exename, 1024 - 1);
if (r > 0)
{
exename[r] = '\0';
return exename;
}
// FreeBSD
r = readlink("/proc/curproc/file", exename, 1024 - 1);
if (r > 0)
{
exename[r] = '\0';
return exename;
}
exename = ExpandFileName(argv0);
#endif
return exename;
}
bool FileSystem::FlushFileBuffers(int fileDescriptor, CString& errmsg)
{
#ifdef WIN32
BOOL ok = ::FlushFileBuffers((HANDLE)_get_osfhandle(fileDescriptor));
if (!ok)
{
errmsg.Reserve(1024 - 1);
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
nullptr, GetLastError(), MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
errmsg, 1024, nullptr);
}
return ok;
#else
#ifdef HAVE_FULLFSYNC
int ret = fcntl(fileDescriptor, F_FULLFSYNC) == -1 ? 1 : 0;
#elif HAVE_FDATASYNC
int ret = fdatasync(fileDescriptor);
#else
int ret = fsync(fileDescriptor);
#endif
if (ret != 0)
{
errmsg = GetLastErrorMessage();
}
return ret == 0;
#endif
}
CString FileSystem::ExpandFileName(const char* filename)
{
#ifdef WIN32
wchar_t unistr[1024];
_wfullpath(unistr, UtfPathToWidePath(filename), 1024);
return WidePathToUtfPath(unistr);
#else
CString result;
result.Reserve(1024 - 1);
if (filename[0] != '\0' && filename[0] != '/')
{
char curDir[MAX_PATH + 1];
getcwd(curDir, sizeof(curDir) - 1); // 1 char reserved for adding backslash
int offset = 0;
if (filename[0] == '.' && filename[1] == '/')
{
offset += 2;
}
result.Format("%s/%s", curDir, filename + offset);
}
else
{
result = filename;
}
return result;
#endif
}
