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- Article 57 of net.sources.bugs:
- Path: mcdsun!noao!hao!nbires!seismo!rutgers!clyde!cbatt!ihnp4!houxm!hjuxa!catnip!ben
- From: ben@catnip.UUCP (Bennett Broder)
- Newsgroups: net.sources.bugs
- Subject: ARC squeeze fix
- Message-ID: <441@catnip.UUCP>
- Date: 26 Dec 86 19:32:25 GMT
- References: <390@monuxa.UUCP>
- Reply-To: ben@catnip.UUCP (Bennett Broder)
- Organization: The Broder Residence, Holmdel, NJ 07733
- Lines: 48
-
- In article <390@monuxa.UUCP> john@monuxa.UUCP (John Ruschmeyer) writes:
- >When the UNIX version of ARC was posted a while ago, I brought it up on
- >our systems here. Unlike a recent poster to this newsgroup, I had no
- >problem with the Lempel-Ziv (crunch) code, but never could get it to
- >correctly squeeze or unsqueeze a file in an archive.
- >
- > ... Using code from that program I was able to fix the problem with
- >ARC not correctly unsqueezing a file in the archive (creating either a
- >zero-length file or giving the 'invalid decode tree' message).
- >
- >NOTE: I am still having problems with the squeeze code on our system. For
- >some reason, trying to archive a file which would normally be squeezed on
- >the MS-DOS version of ARC results in it being compressed with some
- >less-efficient method. I think this is a bug, but it appears to be a
- >harmless one.
-
- In order to decide which compression routine to use, ARC estimates the
- size of the resulting file. The squeezing routine was handicapped
- considerably, since the routine calculating the squeezed file size was
- figuring on using 16 bytes to store each integer.
-
- Here are the diffs to remedy this problem.
-
- *** arcsq.c Fri Dec 26 14:00:28 1986
- --- arcsq.c.old Fri Dec 26 13:59:48 1986
- ***************
- *** 18,24
- */
- #include <stdio.h>
-
- ! #define int16size 2 /* 2 bytes */
-
- /* stuff for Huffman squeezing */
-
-
- --- 18,24 -----
- */
- #include <stdio.h>
-
- ! #define int16size 16 /* 16 bits */
-
- /* stuff for Huffman squeezing */
-
- --
-
- Ben Broder
- {ihnp4,decvax} !hjuxa!catnip!ben
- {houxm,clyde}/
-
-