path.py 文件源码

def _get_long_path_name(path):
        """Get a long path name (expand ~) on Windows using ctypes.

        Examples
        --------

        >>> get_long_path_name('c:\\docume~1')
        'c:\\\\Documents and Settings'

        """
        try:
            import ctypes
        except ImportError:
            raise ImportError('you need to have ctypes installed for this to work')
        _GetLongPathName = ctypes.windll.kernel32.GetLongPathNameW
        _GetLongPathName.argtypes = [ctypes.c_wchar_p, ctypes.c_wchar_p,
            ctypes.c_uint ]

        buf = ctypes.create_unicode_buffer(260)
        rv = _GetLongPathName(path, buf, 260)
        if rv == 0 or rv > 260:
            return path
        else:
            return buf.value