[ros-kernel] New proposed fix: for getchar

[Jason F. <jas...@ya...>]

Ok the rational behind this fix:
- the console cannot be in line mode to get a single char (and return
immediately after, which is what getchar requires)
- the console mode setting shouldn't be done in getc() or any lower
because they work with any kind of file (getchar is specific towards
stdin)

Ok.. awaiting comments..

- Jason

int
getchar(void)
{
  int c;
  DWORD oldStdinMode;
  WINBOOL consoleResult, hadIONBF = FALSE;
  HANDLE hStdin = _get_osfhandle(stdin->_file);

  GetConsoleMode(hStdin, &oldStdinMode);
  SetConsoleMode(hStdin, ENABLE_ECHO_INPUT | ENABLE_PROCESSED_INPUT);

  if(!(stdin->_flag & _IONBF))
  {
    hadIONBF = TRUE;
    stdin->_flag |= _IONBF;
  }

  c = getc(stdin);

  if(hadIONBF)
  {
    stdin->_flag |= _IONBF;
  }

  SetConsoleMode(hStdin, oldStdinMode);

  return c;
}





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