def _open(self, archive):
"""Open RAR archive file."""
try:
handle = unrarlib.RAROpenArchiveEx(ctypes.byref(archive))
except unrarlib.UnrarException:
raise BadRarFile("Invalid RAR file.")
return handle
def is_rarfile(filename):
"""Return true if file is a valid RAR file."""
mode = constants.RAR_OM_LIST_INCSPLIT
archive = unrarlib.RAROpenArchiveDataEx(filename, mode=mode)
try:
handle = unrarlib.RAROpenArchiveEx(ctypes.byref(archive))
except unrarlib.UnrarException:
return False
unrarlib.RARCloseArchive(handle)
return (archive.OpenResult == constants.SUCCESS)