Dec 102017
 
Fast file compression utility producing small files.
File HA098.ZIP from The Programmer’s Corner in
Category Utilities for DOS and Windows Machines
Fast file compression utility producing small files.
File Name File Size Zip Size Zip Type
HA.EXE 28226 27317 deflated
HA.TXT 3588 1397 deflated

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Contents of the HA.TXT file



HA 0.98 Copyright (c) 1993 Harri Hirvola

Permission is granted to any individual or institution to use, copy,
or redistribute this executable as long as it is not modified and is
not sold for profit.

HA COMES WITH NO WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED.
IN NO EVENT WILL THE AUTHOR OF THIS SOFTWARE BE LIABLE OF ANY DAMAGE
RESULTING FROM THE USE OF THIS SOFTWARE.


About HA

HA is a small file archiver utility. It's main goal is to offer
maximum compression without fancy addons.

This version of HA is not yet a finished product. It is still quite
slow and implementation of commands is somewhat incomplete and
inconsistent. I hope that someone finds it usefull even in it's
current form.


Commands of MSDOS version

General form of command line for HA is :

HA archive [search pattern list]

Commandstring starts with command character and includes optional
switch characters.

Available commands are:

a[aemr012] Add files matching search pattern to archive.

e[aty] Extract files matching search pattern from archive.

x[aty] Extract files matching search pattern from archive
using path information stored in archive.

l[f] List files currently in archive.

d Delete files matching search pattern from archive.
If archive does not contain any files after deletion
it is removed.


f[aemr012] Freshen files in archive. All files matching search
pattern and newer than version already in archive
are updated to archive.

u[aemr012] Update files to archive. All files matching search
pattern that are newer than version already in
archive or are not yet in archive are updated to archive.

t Test files in archive.


Available switches are:

0,1,2 Try compression method #. More than one can be specified.
Methods are:
0-CPY Simple copying of files.
1-ASC Default method using sliding window dictionary
followed by arithmetic coder. Offers quite good
compression on wide variety of filetypes.
2-HSC Compression method based on finite contex model
and arithmetic coder. Quite slow for binary data,
but offers very good compression especially for
longer text files.

y Assume answer yes on all questions.

t Touch files when extracting. Sets file times to current
machine time.

r Recurse through subdirectories while searching for files
matching search pattern.

f Full listing of stored file information.

m Move files when archiving. Files are removed from disk
after they are succesfully writen to archive.

a Set system specific file attributes when extracting files.
Find special files when archiving.

e Do not store pathname information.



How to contact author

Most (or only) reliable way to contact author is by email.
Email addresses currently functioning:

Internet: [email protected]

Fidonet: 2:220/851


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