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-
- DWC Archive Utility, Release A5.01, 5/31/88
- (C) Copyright 1986,1987,1988 by Dean W. Cooper; All rights reserved.
-
-
- NOTE: The source code to the compressor/decompressor modules of DWC,
- as of this release, is now considered Proprietary Information
- and will no longer be distributed. However, the executable
- version of DWC, and the source code that is not part of the
- compressor/decompressor modules, is still available free of
- charge for both private and commercial use and may be
- distributed provided NO fee is charged.
-
-
- A conference is still available for discussing archivers on Exec-PC
- BBS (414-964-5160) with me, Phil Katz, and others.
-
-
- Release notes:
- ----------------------------------------------------------------------
- Release A4.3 fixes a bug when extracting a file with the "o" option
- and a few other special cases. Also added are the environment
- variables DWCTEMP, DWCDEF, and DWCADD.
-
- Release A4.4 fixes a bug when compressing with the "z" option that
- resulted in a integer divide by zero error. Added the "-" option
- that will negate the option following it (reverse its effect), and
- an option to set the maximum number of entries allowed in the
- directory. Also, made the "z" option dynamically shrink its memory
- requirements based on available memory.
-
- Release A4.5 fixes the memory requirements when just listing the
- files in an archive.
-
- Release A4.6 fixes a bug during extraction of an archive with recorded
- directories. Also, adds support for path names with forward slashes.
-
- Release A4.7 adds the '!' option to suppress all messages including
- error messages. DWC now returns different error codes for all errors
- and major warnings. Also, MAKESFX is now included with DWC which
- allows one to make a self-extracting archive.
-
- Release A4.8 fixes a bug that caused DWC to hang when extracting a
- corrupted file. Also, made adding files with merge option (option j),
- do CRC checking.
-
- Release A4.9 fixes a bug with malloc that would cause DWC to run out
- of memory when it really hadn't. I now use my own alloc routines.
- NOTE: Malloc is junk!
-
- Release A4.91 fixes a few bugs that I found here and there but at the
- time of this writing, I forget what they were. This release was also
- compiled with MicroSoft C 4.5.
-
- Release A4.92 fixes a bug where DWC assumed that if it could not open
- an archive file, that the archive file simply had not been created yet
- and did not bother to check if the archive's drive and path were valid.
-
- Release A4.93 fixes a bug using DWC on a network that was caused by
- Microsoft's rename function returning bogus error values. Fixed bug
- with my own near memory alloc functions. Fixed bug in routine that
- verifies if a given disk drive exists. Also, this release was compiled
- with MicroSoft C 5.0.
-
- Release A4.94 fixes a bug introduced with MicroSoft 5.0. Namely, the
- function localtime() returns a different value then it used to for
- files with dates prior to Jan 1,1980. Also, note the new environment
- variable TZ mentioned in the documentation.
-
- Release A4.95 fixes another bug using DWC on a network that was caused
- by Microsoft's rename function returning bogus error values. Also,
- with this release my address has changed.
-
- Release A5.00: I decided to retry my hand at optimization and achieved
- a 25% speed improvement for the speed compressor algorithm. I will soon
- be re-optimizing the uncompressor too.
-
- Release A5.01: I sold exclusive rights for the compressor/decompressor
- source code to DS Technologies for a measly $3000. Because of this, the
- compressor/decompressor source code is now proprietary information.
- Sorry folks, but after all this time, I figure I should get something
- for all my hard work...
-
-
- May 31,1988
-
- Dean W. Cooper
- 18028 Cottage Garden Dr #103
- Germantown, MD 20874
- (301) 428-7210 (Voice)