home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.cbm
- Path: undergrad.math.uwaterloo.ca!csbruce
- From: csbruce@ccnga.uwaterloo.ca (Craig Bruce)
- Subject: Re: Please Read: WHAT IS UUENCODING?
- Sender: news@undergrad.math.uwaterloo.ca (news spool owner)
- Message-ID: <Dp95Ap.G9q@undergrad.math.uwaterloo.ca>
- Date: Tue, 2 Apr 1996 20:37:36 GMT
- References: <4jg85q$a7v@hasle.sn.no> <9603300104.AA0015t@cosine.demon.co.uk> <4jm0vr$289@hasle.sn.no> <31604203.4EDF@ludd.luth.se>
- Nntp-Posting-Host: ccnga.uwaterloo.ca
- Organization: University of Waterloo, Canada (eh!)
-
- In article <31604203.4EDF@ludd.luth.se>,
- Watchman of FairLight <watchman@ludd.luth.se> wrote:
-
- >A short description of uuencoding:
- >
- >Take an array of 8bit data. Interpret the first 7 bits as a 7 bit ASCII
- >character. Continue with next 7 bits and do the same. Repeat until end.
- >
- >This means that the source grows to approx 9/8 of it's original size.
- >The std uuencode also includes a padding format which makes the
- >uuencoded file easier to include in a textfile (fex mail).
-
- This isn't quite right. What uuencoding does is takes three 8-bit bytes of
- data and converts it into four ASCII characters by extracting four 6-bit
- quantities from the binary data (3*8 == 4*6 == 24). The 6-bit values are
- added to the ASCII code for SPACE (32) and the resulting printable ASCII
- characters are used. There is a little more formatting than this, but the
- above is the general idea.
-
- So, the source grows to approx 4/3 its original size.
-
- Keep on Hackin'!
-
- -Craig Bruce
- csbruce@ccnga.uwaterloo.ca
- "Here is my bid to save the Internet:
- its : belonging to 'it'
- it's : contraction of 'it is'
- there : not here, but... there
- their : belonging to 'them'
- they're : contraction of 'they are'
- argument : no E after the U
- John's : belonging to 'John'
- different : should be followed by 'from'
- affect : not to be confused with 'effect'
- 'i.e.,' : 'ie.' is wrong
- high-school students : the hyphen needs to be there!"
-