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Path: utzoo!utgpu!water!watmath!clyde!cbosgd!gwspc!cbcsta!n8emr!lwv
From: lwv@n8emr.UUCP
Newsgroups: comp.sys.apple
Subject: Re: Bit packing and squeezing
Message-ID: <198@n8emr.UUCP>
Date: Mon, 3-Aug-87 08:38:16 EDT
Article-I.D.: n8emr.198
Posted: Mon Aug  3 08:38:16 1987
Date-Received: Wed, 5-Aug-87 06:54:21 EDT
References: <8707312136.AA02715@crash.CTS.COM>
Reply-To: lwv@n8emr.UUCP (Larry W. Virden)
Distribution: world
Organization: N8EMR's Ham BBS (HBBS), Columbus,Ohio
Lines: 35

In article <8707312136.AA02715@crash.CTS.COM> sdcsvax!LOCAL.UCSD.EDU!pnet01!pro-sol!mdavis@ucbvax.Berkeley.EDU writes:
-->The net cannot handle 8-bit binary data through the various mailers. 
-->Therefore, a SQueeze type program, which creates 8-bit binary data files, is
-->not useful for passing information through the net as regular mail.
-->
Just so you know, I am quite aware of the text limitations.  If you will
re-read my note CLOSELY, I was responding to a request to post things IN 
BINARY II format - which IS an 8 bit data format.

-->The Executioner will take 8-bit data and create a special text version of a
-->file by using a 6-bit packing scheme.  This allows all the printable ASCII
-->characters to make up the contents of the file so that they can be passed
-->through a regular text network without getting munged.
-->
Sounds to me like a fine way of compressing A SINGLE file.
-->
-->The ULTIMATE method would be to use an 8-bit squeezing program (like Don
-->Elton's ASQ utility) to compress a binary file first.  Then use Executioner to
-->convert it to a transmittable text file with 6-bit encoding.  Not everyone has
-->the ASQ/AUSQ utilities, though.  And the overall savings may or may not be
-->that big of a deal.
-->

I agree that using ASQ - a free/or low cost ware item by the way - doesnt
give a lot of savings.  What _I_ am proposing is to port the Squeezing
version of arc to the Apple, then post it in executioner format, then using
THAT format, uuencoded, to transmit files, at a 47 to 65% savings!
It then takes many more steps to get the files, BUT you can get LOTS more
files at one swell foop!!

-- 
Larry W. Virden	 75046,606 (CIS)
674 Falls Place, Reynoldsburg, OH 43068 (614) 864-8817
cbosgd!n8emr!lwv HAM/SWL BBS (HBBS) 614-457-4227.. 300/1200 bps
We haven't inherited the world from our parents, but borrowed it from our children.