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Message-Id: <201702121906.v1CJ6buS013414@delorie.com>
Date: Sun, 12 Feb 2017 19:50:30 +0100
From: "Juan Manuel Guerrero (juan DOT guerrero AT gmx DOT de) [via djgpp-announce AT delorie DOT com]" <djgpp-announce AT delorie DOT com>
To: djgpp-announce AT delorie DOT com
Subject: ANNOUNCE: DJGPP port of clzip 1.8 uploaded.
Content-Type: text/plain; charset=ISO-8859-15; format=flowed
Reply-To: djgpp AT delorie DOT com

This is a port of clzip 1.8 to MSDOS/DJGPP.

   clzip is a lossless data compressor with a user interface similar to the one
   of gzip or bzip2. Clzip is about as fast as gzip, compresses most files more
   than bzip2, and is better than both from a data recovery perspective.


   DJGPP specific changes.
   =======================

   - The port implements SFN support in a similar manner than it has been
     done for the bzip2 and xz ports.  If only SFN support is available the
     file name and its extension must be truncated and modified to encode the
     compressor extension and the numbers to identify a multi volume archive.
     The program does not store the original file name in the header of the
     archive thus there is no chance to regenerate them when uncompressiong
     the archive in a SFN environment.  Here the same naming schema than used
     in the bzip2 and xz ports is applied.  The archiver extension is ".lz".
     On SFN systems, the ".lz" extension will consume one or two characters
     of the original file name extension.

     For SFN systems the following rules apply for ".lz" extension:
       compressed name       uncompressed name
         filename.exl    -->   filename.ex
         filename.elz    -->   filename.e
         filename.lz     -->   filename
       uncompressed name     compressed name
         filename.ext    -->   filename.exl
         filename.ex     -->   filename.exl
         filename.e      -->   filename.elz
         filename        -->   filename.lz

     The port will detect at run time if LFN support is available or not and
     will select the method to handle the extension creation accordingly.
     For LFN and SFN systems, the ".tlz" extension will always be identified
     as tar archives.  Their file name will always have a ".tar" extension.

     If only SFN support is available, the DJGPP port of clzip will always
     consume the last 5 characters of the 8 possible name characters to
     encode the volume number.  E.g.: when compressing a file with the file
     name filename.ext and splitting it into multiple volumes, the different
     volumes will become fil00001.exl, fil00002.exl, etc.  It is clear that
     neither the original filename nor the original extension can be recreated.

   - LFN support enabled is required to run the testsuite.  The test data is
     binary data thus the used unzip program must treat them as binary and
     not as text data.

   - The port has been configured and compiled on WinXP SP3 and Win98SE.
     There is no guarantee that this may be possible with any other DOS-like
     OS.  Due to the massive use of long file names it will not be possible
     to configure and compile without LFN support.

   To build this port you will need an OS with LFN support to configure and
   compile the source package.

   As usual, all djgpp specific files (diffs, README files, etc.) are stored in
   the /djgpp directory.  The sources have been configured to be build in the
   "_build" directory.  If for some reason it does not work for you, delete it
   contents and configure from scratch again.

   For further information about clzip please read the info docs and NEWS file.



   This is a verbatim extract of the NEWS file:

-------------------------------------------------------------------------------
   It is the first DJGPP port of clzip.  Read the complete NEWS file.


-------------------------------------------------------------------------------




   The port consists of the usual three packages produced using djdev205
   that can be downloaded from ftp.delorie.com and mirrors as (time stamp 2017-02-11):

     clzip 1.8 binary and info format documentation:
     ftp://ftp.delorie.com/pub/djgpp/current/v2apps/clzp18b.zip

     clzip 1.8 dvi, html, ps and pdf format documentation:
     ftp://ftp.delorie.com/pub/djgpp/current/v2apps/clzp18d.zip

     clzip 1.8 source:
     ftp://ftp.delorie.com/pub/djgpp/current/v2apps/clzp18s.zip



   Send clzip specific bug reports to <lzip-bug@@nongnu.org>.
   Send suggestions and bug reports concerning the DJGPP port to
   comp.os.msdos.djgpp or <djgpp AT delorie DOT com>.


Enjoy.

         Guerrero, Juan Manuel <juan DOT guerrero AT gmx DOT de>