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POSTING 1218371 FROM JWILK POSTED AT 2021-11-05 21:50:34 EXPIRES: 2021-11-07
21:50:34

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This is the debian package of bzip, a block-sorting lossless
compressor having usually a much better compression ratio than
gzip (but is far slower as well).
It was put together by Helmut Geyer <Helmut.Geyer@iwr.uni-heidelberg.de>
from sources obtained from
http://www.cs.man.ac.uk/arch/people/j-seward/bzip-0.21.tar.gz

bzip has the following copyright. Note that there may be other
issues in the USA that may forbid use of this program in the US,
as it uses an arithmetic code as back-end. 
There exists a general software patent on arithmetic coding in the
USA and it hasn't been determined whether 
 a) this really holds for any arithmetic code
 b) this has any impact on the algorithm used in this program
 c) it covers only commercial use.

So if you're not in the USA, you may use this program without 
any restrictions, otherwise I don't know. Note that neither
the author nor I am a lawyer ad do not want to get involved
with the legal issues at hand.

See http://www.cs.man.ac.uk/arch/people/j-seward/
for some information on this topic.

/*-----------------------------------------------------------*/
/*--- A block-sorting, lossless compressor         bzip.c ---*/
/*-----------------------------------------------------------*/

/*--
  This program is BZIP, a lossless, block-sorting data compressor,
  version 0.21, dated 25-August-1996.

  Copyright (C) 1996 by Julian Seward.
     Department of Computer Science, University of Manchester,
     Oxford Road, Manchester M13 9PL, UK.
     email: sewardj@cs.man.ac.uk

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

  The GNU General Public License is contained in the file LICENSE.

  This program is based on (at least) the work of:
     Mike Burrows
     David Wheeler
     Peter Fenwick
     Alistair Moffat
     Radford Neal
     Ian H. Witten

  For more information on these sources, see the file ALGORITHMS.
--*/

/*----------------------------------------------------*/
/*--- IMPORTANT                                    ---*/
/*----------------------------------------------------*/

/*--
   WARNING:
      This program (attempts to) compress data by performing several
      non-trivial transformations on it.  Unless you are 100% familiar
      with *all* the algorithms contained herein, and with the
      consequences of modifying them, you should NOT meddle with the
      compression or decompression machinery.  Incorrect changes can
      and very likely *will* lead to disasterous loss of data.

   DISCLAIMER:
      I TAKE NO RESPONSIBILITY FOR ANY LOSS OF DATA ARISING FROM THE
      USE OF THIS PROGRAM, HOWSOEVER CAUSED.

      Every compression of a file implies an assumption that the
      compressed file can be decompressed to reproduce the original.
      Great efforts in design, coding and testing have been made to
      ensure that this program works correctly.  However, the
      complexity of the algorithms, and, in particular, the presence
      of various special cases in the code which occur with very low
      but non-zero probability make it impossible to rule out the
      possibility of bugs remaining in the program.  DO NOT COMPRESS
      ANY DATA WITH THIS PROGRAM UNLESS YOU ARE PREPARED TO ACCEPT THE
      POSSIBILITY, HOWEVER SMALL, THAT THE DATA WILL NOT BE RECOVERABLE.

      That is not to say this program is inherently unreliable.
      Indeed, I very much hope the opposite is true.  BZIP has been
      carefully constructed and extensively tested.
--*/



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