Body download of multipart yEnc files makes them corrupt

[Bjarke42]

If you use body to retrieve several parts that are yEnc encoded they are always corrupt. Sometimes you can retrieve a one part file the is not corrupt.

So i tried to solve this and came up with this mockup of body:

import sabctools

#other code here

def body(
        self,
        msgid_article: str | int | None = None,
        #decode: bool | None = None,
    ) -> bytes:
        
        args = None
        if msgid_article is not None:
            args = str(msgid_article)

        code, message = self.command("BODY", args)
        if code != 222:
            raise NNTPReplyError(code, message)
        
        # _body code
        data_plain: bytes = b""
        for line in self._info(code, message):
            data_plain+=bytes(line)
        
        
        
        (
        	decoded_data,
        	yenc_filename,
        	file_size,
        	data_begin,
        	data_size,
        	crc_correct,
    	) = sabctools.yenc_decode(memoryview(bytes(data_plain)))
        
        #if crc_correct is None:
            #self.logging.info("CRC Error in %s", article.article)
            #raise BadData(decoded_data)
        return decoded_data,yenc_filename,file_size,data_begin,data_size,crc_correct

So here i used sabctools yEnc decoder and it works, also its 10x faster!

This makes it possible to actually use body for retrieveing files.

And as a hint to how i did it, i first use group, then body to retrieve my headers.

I have not been sucessfully in using their highspeed variables, so this version is without any corruption of data and uses plain normal python variables.