mirror of
https://git.FreeBSD.org/ports.git
synced 2024-11-14 23:46:10 +00:00
46 lines
2.3 KiB
Plaintext
46 lines
2.3 KiB
Plaintext
|
HA is an archiver which I released in january 1993 as version 0.98.
|
||
|
|
After that I had plans to improve speed, archive handling etc. which
|
||
|
|
would have required total rewrite of the code. For that I unfortunately
|
||
|
|
could not find time. Because there has been quite considerably interest
|
||
|
|
for internals of HA (especially for the HSC compression method) I
|
||
|
|
decided to make a source level release from my current test version
|
||
|
|
(0.999 beta) and place it under GNU General Public License. The sources
|
||
|
|
for this version are not very consistent or clean, but everything should
|
||
|
|
work.
|
||
|
|
|
||
|
|
There are several improvements which should be made before this could be
|
||
|
|
called version 1.0. Some of the most obvious of these are:
|
||
|
|
- Compression methods should be coded in assembler for PC and using more
|
||
|
|
efficient data structures for 32 bit platforms. Current version does
|
||
|
|
some things only to overcome 64kB segments of 8086.
|
||
|
|
- UNIX port has still some problems and is missing some things (for example
|
||
|
|
a grouping operator in wildcard matches).
|
||
|
|
- File handling is far from optimum.
|
||
|
|
- Archive handling is not too clever either.
|
||
|
|
- Testing should be done more thoroughly as there are many special cases
|
||
|
|
in compression routines which get used very rarely.
|
||
|
|
- Documentation of code and algorithms is totally missing.
|
||
|
|
|
||
|
|
This archive (ha0999.zip) contains this readme, MSDOS executable ha.exe
|
||
|
|
and source files for HA 0.999beta. Ha.exe is NOT compiled directly from
|
||
|
|
included sources. Some critical parts of it were compiled from hand
|
||
|
|
optimized versions of compiler output. It is somewhat faster than "pure
|
||
|
|
C" version.
|
||
|
|
|
||
|
|
MSDOS sources are for Borland C 4.0 but older versions of bcc should
|
||
|
|
work. Makefile needs some editing as some paths are hardcoded in it.
|
||
|
|
UNIX sources are not very generic. I have only tested this using Linux
|
||
|
|
on PC and AIX on IBM6000. Only compiler and make utility that I have
|
||
|
|
tested are GCC and GNU MAKE.
|
||
|
|
|
||
|
|
Porting HA should be fairly easy as all machine specific code is in
|
||
|
|
machine.h and machine.c under machine specific directories. Md_funcs.txt
|
||
|
|
documents these functions. Examples can be found from pc and nix
|
||
|
|
directories.
|
||
|
|
|
||
|
|
Email address where I can be reached is "harri.hirvola@vaisala.infonet.com".
|
||
|
|
My email addresses have not been very stable and I would not be very
|
||
|
|
surprised if this one too is only valid for some months...
|
||
|
|
|
||
|
|
Harri Hirvola
|