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swCHIP 1991 January
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1995-12-09
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This program requires VBRUN300.DLL.
You may use this program free of charge and you need not register it;
however, the interface for this program was written in Visual Basic. If
you want to be able to modify this program for use in other programs or
if you just donÆt like the way it looks, the Visual Basic source code is
available by registering (GO SWREG - $21.00, ID# 5391).
The DLL (READARCH.DLL) does the actual decoding of the archives based on
offsets into the binary file and has a couple of other utilities for
reading the dates on some files and listing PIT archives. Everything
else was done in VB so you can have the most flexibility to make changes
to the interface.
READARCH.DLL should be placed in your WINDOWS/SYSTEM directory or in the
same directory as AV.EXE.
Technical support for Archive Viewer is only available to registered
users.
This program is intended for private use and may not be included in
commercial products or resold.
Archive Viewer can extract files from the following archives with the
listed compression methods:
ARC/PAK
None - Old style, no compression
None - New style, no compression
RLE - Compression of repeated characters only
Huffman - Compression of repeated characters plus Huffman SQueezing
12 bit LZW - Lempel-Zev packing of repeated strings (old style)
LZW w RLE - Lempel-Zev packing of repeated strings (new style)
LZW w RLE - Lempel-Zev Williams packing with improved hash function
LZW w RLE - Dynamic Lempel-Zev packing with adaptive reset
Squashing - Dynamic Lempel-Zev packing, larger hash table
ARJ
No compression
lz1
lz2
lz3
lz4
GZ
GZIP
LHARC
lh0
lh1
lh4
lh5
lzs
lz5
PIT
No compression
Huffman
SIT
No compression
RLE compression
LZW compression
Huffman
LZH
TAR
No compression
ZIP
No compression
Shrunk
Reduced(1)
Reduced(2)
Reduced(3)
Reduced(4)
Imploded 8K/D 2 Sfano
Imploded 4K/D 2 SFano
Imploded 8K/D 3 SFano
Tokenized
Deflated
Z
Unix Compress
Unix Pack
SCO LZH Compress
ZOO
No compression
LZW
LZH
Archive Viewer can also decompress files compressed with Microsoft
COMPRESS.
Archive Viewer may take a long time to list the contents of PIT archives
if the archive is compressed because it has to decompress the entire
archive before the contents can be listed.
Credit where credit is due...
ARC/PAK
Copyright (C) 1985-87 System Enhancement Associates
Thom Henderson
ARJ
Copyright (C) 1991 Robert K. Jung
2606 Village Road West
Norwood, Massachusetts 02062
COMPRESS
Copyright (C) 1985, 1986 The Regents of the University of California.
James A. Woods, derived from original work by Spencer Thomas and Joseph
Orost.
GZIP
Copyright (C) 1992-1993 Jean-loup Gailly
The unzip code was written and put in the public domain by Mark Adler.
Portions of the lzw code are derived from the public domain 'compress'
written by Spencer Thomas, Joe Orost, James Woods, Jim McKie, Steve
Davies, Ken Turkowski, Dave Mack and Peter Jannesen.
LHARC
Copyright (C) 1989 Yooichi Tagawa
Microsoft COMPRESS
Copyright (C) Microsoft Corporation 1990-1992
PIT
R. (Scott) McGinnis
P.O. Box 3607 Mdse Mart
Chicago, IL 60654-0607
SIT
Allan G. Weber
TAR
Copyright (C) 1988, 1992, 1993 Free Software Foundation
John Gilmore
ZIP
Robert A. Heath
157 Chartwell Rd
Columbia, SC 29210
ZOO
Rahul Dhesi
Phone: (317) 285 8641 daytime EST
720 W. Centennial Ave #15
Muncie, Indiana 47303
Additional information about some of the archive formats was derived
from ZV.BAS by Dick Dennison, CompuServe [74270, 3636].
Questions or comments about this program can be sent to:
Joe Oliphant
CompuServe: [71742, 1451]
Email: joe_oliphant@csufresno.edu