Date: Thu, 30 Jul 1998 04:14:17 +1000 (EST) From: proff@iq.org To: peter@netplex.com.au (Peter Wemm) Cc: jkb@best.com, showboat@hotmail.com, security@FreeBSD.ORG Subject: Berg coding style (was qpopper trauma) Message-ID: <19980729181418.19519.qmail@iq.org> In-Reply-To: <199807291638.AAA02315@spinner.netplex.com.au> from Peter Wemm at "Jul 30, 98 00:38:49 am"
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> The cucipop code truely has to be seen to be believed...... eg:
> =======
> }
> }
> ;{ int namelen=sizeof peername;
> if(getpeername(fileno(sockin),(struct sockaddr*)&peername,&namelen)&&
> !debug&&(errno==ENOTSOCK||errno==EINVAL))
> { int serverfd,curfd;
> signal(SIGHUP,SIG_IGN);signal(SIGPIPE,SIG_IGN);fclose(stdin);
> fclose(stdout);serverfd=socket(AF_INET,SOCK_STREAM,TCP_PROT);
> peername.sin_family=AF_INET;peername.sin_addr.s_addr=INADDR_ANY;
> peername.sin_port=htons(port);curfd=-1;
> setsockopt(serverfd,SOL_SOCKET,SO_REUSEADDR,&curfd,sizeof curfd);
> if(bind(serverfd,(struct sockaddr*)&peername,sizeof peername))
> =======
>
> I've heard 'you can write fortran code in any language'.. I suspect this
> is C written by an assembler programmer. The handcrafted optimization
> reminds me of dark periods in my past of trying to save every last clock
> cycle and/or byte of memory.
That's actually pretty tame for Berg code (S. R. van den Berg). My favourite
is the following line from bregex.c (Berg's record-beating posix compatible regex
pattern matcher included in nntpcache):
while((jump=jt[*(jstr+=jump)]));
For the uninitiated the above is a full blown Boyer-Moore loop. regexp.c in
procmail is worth a glance too.
Cheers,
Julian.
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