openmedialibrary/oml/win32utils.py

import sys
if sys.platform == 'win32':
    import ctypes
    from ctypes import wintypes
    _GetShortPathNameW = ctypes.windll.kernel32.GetShortPathNameW
    _GetShortPathNameW.argtypes = [wintypes.LPCWSTR, wintypes.LPWSTR, wintypes.DWORD]
    _GetShortPathNameW.restype = wintypes.DWORD

    def get_short_path_name(long_name):
        """
        Gets the short path name of a given long path.
        http://stackoverflow.com/a/23598461/200291
        """
        output_buf_size = 0
        while True:
            output_buf = ctypes.create_unicode_buffer(output_buf_size)
            needed = _GetShortPathNameW(long_name, output_buf, output_buf_size)
            if output_buf_size >= needed:
                return output_buf.value
            else:
                output_buf_size = needed

else:
    def get_short_path_name(long_name):
        return long_name