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XR102.TXT
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1992-02-06
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Archive X-Ray Programs
Doc Revision 1.02
AR 1.10 (ARJ)
LR 1.01 (Lharc)
ZR 1.26 (ZIP)
ZOR 1.00 (ZOO)
Copyright 1990 - 1992 by Gordon Haff and Bit Masons Consulting.
All rights reserved.
Command: ZR or AR or LR or ZOR
Purpose: Provides a scrollable environment for selecting
files contained within a ZIP file and viewing or
extracting their contents
Syntax: ZR [d:][\path\]filename.ZIP [/n]
Commands: <Enter> views files
<Space> or <e> extracts files
<d> deletes files
Prereqs: 100% IBM Compatible PC running DOS 3.0 or higher
Archive Name: XRAY102.ZIP
Associated Programs:
In their default configuration, the programs REQUIRE
Vern Buerg's LIST file viewing program (or 4DOS
with LIST as the viewer name) and the corresponding
archive program (PKUNZIP, LHA, ARJ, or ZOO). LIST,
PKUNZIP, 4DOS, and ARJ are Shareware and and either
require separate registration with their authors or
request a donation. See the individual program
license agreements for details. AR also requires the
included UNARJXR, a slightly modified version of
Robert Jung's UNARJ to which he retains full
copyright.
While these programs can be operated from the DOS
command line using the format described above, they
are most conveniently called as a user-defined shell
command (or SmartViewer in DF 4.0 and later) from
within the author's Directory Freedom (DF) program.
Other: Your COMSPEC variable must be set. See Section 2.1.
┌─────────┐
┌─────┴───┐ │ (tm)
──│ │o │──────────────────
│ ┌─────┴╨──┐ │ Association of
│ │ │─┘ Shareware
└───│ o │ Professionals
──────│ ║ │────────────────────
└────╨────┘ MEMBER
X-Ray 1.02 2
DISCLAIMER OF WARRANTY
This program is provided AS IS. Bit Masons Consulting MAKES NO
WARRANTY OF ANY KIND, EXPRESSED OR IMPLIED, INCLUDING WITHOUT
LIMITATION, ANY WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR
A PARTICULAR PURPOSE.
The entire and exclusive liability and remedy for breach of this
Limited Warranty shall be limited to replacement of defective
diskette(s) or documentation and shall not include or extend to
any claim for or right to recover any other damages, including
but not limited to, loss of profit, data, or use of the
software, or special, incidental, or consequential damages or
other similar claims, even if Bit Masons has been specifically
advised of the possibility of such damages. In no event will the
publishers' liability for any damages to you or any other person
ever exceed the lower of suggested list price or actual price
paid for the license to use the software, regardless of any form
of the claim.
BIT MASONS SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTY
OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
LICENSE
The X-Ray archive viewers are distributed as free, copyrighted
software. What this means is that you can use these programs
for as long as you like without cost or obligation. What you
cannot do is to sell this software or make a profit off of it
(except as described below) without the express written
permission of the author.
The X-Ray archive viewers are the sole property of Gordon Haff.
These programs may be freely copied and transferred to
individual parties. They may be posted on Bulletin Board
systems (BBS) for electronic access as long as NO FEE is charged
for its distribution except for private BBS operations that
charge a regular user subscription fee. Computer information
services such as Compuserve (CIS), Genie, and Byte Information
Exchange (BIX) are authorized to post this product for
subscriber access. The X-Ray archive viewers may be distributed
on diskette only by 1) disk distributors/vendors who are
associate members of the Association of Shareware Professionals
(ASP) or 2) users groups which do not charge more than a nominal
fee ($5) to cover the costs of distribution. Any changes to
these policies must be made in writing by the author.
X-Ray 1.02 3
This software is produced by a member of the Association of
Shareware Professionals (ASP). The ASP wants to make sure that
the shareware principle works for you. If you are unable to
resolve a shareware-related problem with an ASP member by
contacting the member directly, ASP may be able to help. The ASP
Ombudsman can help you resolve a dispute or problem with an ASP
member, but does not provide technical support for members'
products. Please write to the ASP Ombudsman at 545 Grover Rd.,
Muskegon, MI 49442-9427 or send a Compuserve message via
easyplex to ASP Ombudsman 70007,3536.
TECHNICAL SUPPORT
Since this program is a freebie, unlike the shareware programs
for which I request a registration fee, I'm not going to make any
guarantees here with respect to bug fixes or other technical
support. Having said that, I do like my programs to be as
bug-free as possible, so feel free to report any problems which
you run across.
Contact via:
Channel 1 BBS (617) 354-8873
Compuserve User ID# 72561,2637 (See Note 1)
InterNet/ARPANET 72561.2637@compuserve.com
U.S. Mail 3205 Windsor Ridge Dr.
Westboro MA 01581
Telephone (508) 898-3321 (after 6pm
Eastern time)
The above are roughly in order of preference (i.e. how quickly
I'm likely to see your message and be able to respond). I check
Channel One almost daily and the other electronic services at
least weekly in most cases. In addition, I monitor the Interlink
and the PCRelay Shareware relays through Channel One.
Note 1:
When contacting me via Compuserve, please use the Easyplex mail
system since I do not regularly monitor any of the IBM SIG
message bases.
X-Ray 1.02 4
1.0 Why and Whence the X-Ray Viewers?
----------------------------------------
The main reason that I originally wrote Z-Ray (as in Zip X-Ray)
is the following: I have a shareware file management program
called Directory Freedom which is small and fast in spite of
having more wonderful and exciting features than I could
possibly describe here (Plug #1). Yet, there was still one
thing which I continually ended up having to exit DF to do --
namely, to view the contents of files contained within ZIP
files.
This annoyed me.
I looked high and low for a program which I could call with DF's
nifty user-defined shell function (Plug #2), but nothing did
exactly what I needed. So out came the assembler and, a week or
so later, out popped ZR.
As time passed, I also wanted to be able to do the same thing
with other archive formats I sometimes used -- ARJ and Lharc.
So, taking Z-Ray as a base, I wrote AR and LR. These latter two
programs do work a little differently (inside) from ZR -- see
the Technical notes -- but these differences should generally be
invisible to the user.
So.... armed with these viewers, DF can now perform most of the
major archiving and de-archiving functions for the major
formats used on PC's. (DF 4.0 and later has the capability to
archive files.) For the fancy stuff (such as selective archive
updates), you'll still need a program like ARCMASTER or SHEZ,
but DF will be able to handle all the everyday stuff.
X-Ray 1.02 5
2.0 How does it Work?
-------------------------
I'm glad you asked that question. It works incredibly well.
Oh.. HOW does it work. Well, there's nothing to it.
(Note: The rest of this section just shows ZR. There are no
differences at the operational level between ZR and the other
programs. Just substitute AR (for ARJ files), LR (for Lharc
files), or ZOR (for ZOO files) if you are using one of those
formats.)
The command line syntax is just:
ZR [d:][\path\]filename.ZIP [/n]
So, any of the following are valid:
ZR TEST.ZIP
ZR C:\FOO\TEST.ZIP
ZR E:\FOOBAR.ZIP /n
You do need to type the extension since ZR will look into any
file with a ZIP format (including self-extracting files).
/n (or -n) will sort the list in ascending alphabetical order.
Assuming the specified file exists and is valid, you'll get a
window on the screen which looks something like the following.
The top line in the directory will be highlighted.
Z-Ray 1.26 Copyright 1990,91 by Gordon Haff and Bit Masons Consulting
┌──────────────────────────────────────────────────────────────────────────────┐
│ │
│ Filename Before Method CR After Date Time CRC Attr │
│ ------------ -------- -------- --- ------- -------- ------ -------- ---- │
│ ASCAN.C 11591 Imploded 72% 3278 3-15-90 8:29p C48F03BC ---a │
│ ASIZE.C 17195 Imploded 76% 4134 3-15-90 12:31a A68B0C17 ---a │
│ BBSWEEP.C 6465 Imploded 69% 2031 1-22-90 1:06a 68E0379C ---a │
│ CONVERT.C 37526 Imploded 77% 8446 3-14-90 10:21p 2B42D1B8 ---a │
│ HEADER.C 11732 Imploded 72% 3342 3-03-90 10:03p E67A9698 ---a │
│ IBMDOS.C 2765 Imploded 71% 812 2-17-90 5:39p 4575BF5C ---a │
│ MACROS.C 301 Shrunk 31% 207 11-27-89 7:49p 9D902C85 ---a │
│ MAKEFILE 1602 Imploded 74% 412 3-06-90 4:51p 9C92811F ---a │
│ REDATE.C 17883 Imploded 79% 3710 1-22-90 1:07a 86A021A8 ---a │
│ SELF.C 1654 Imploded 66% 567 1-21-90 10:21p 65F69EE4 ---a │
│ TEST.C 10242 Imploded 69% 3142 3-15-90 8:29p B53434B5 ---a │
│ UNARC.C 15631 Imploded 74% 4136 3-06-90 7:35p 50C371B8 ---a │
│ UNIVERSE.C 7370 Imploded 69% 2256 3-14-90 9:21p 91B1CE5F ---a │
│ VERSION.C 1551 Imploded 48% 804 2-16-90 11:27p B7B98077 ---a │
│ VIEW.C 23958 Imploded 75% 6006 3-06-90 9:38p 5E983326 ---a │
│ │
│ │
│ │
└──────────────────────────────────────────────────────────────────────────────┘
15 Files 167466 74% 43283 PKZIP Version: 1.1
X-Ray 1.02 6
You can move the highlight bar arround with the <Up Arrow>, <Down
Arrow>, <PgUp>, <PgDn>, <Home>, and <End Keys>, These do pretty
much what you'd expect them to do.
You can quit by hitting the <Esc> key.
And now we come to the useful part -- you can view the contents
of a file by pressing the <Enter> key.
What the <Enter> key does is pipe the contents of the highlighted
file to Vernon Buerg's LIST program. PKUNZIP and LIST MUST BE
PRESENT IN YOUR PATH OR THIS WON'T WORK!!! Later on, I explain
how the default command line can be changed in case you've
renamed LIST or know some other way to do the same thing. The
default exec line is:
PKUNZIP -c ~ ` | list /s
where:
~ is the name of the archive being viewed
` is the name of the selected file
These names are filled in dynamically by ZR. The command
lines differ for AR, LR, and ZOR. See the customization
section.
But Wait! There's more! You can also EXTRACT the highlighted
file. Pressing <space> or e will extract the highlighted file
with the following default command line:
PKUNZIP ~ `
As with the viewer, this function requires that PKUNZIP be
present in your path. The extraction will take place to the
current DOS directory. Finally, pressing d will delete the
highlighted file.
About the Totals line:
The totals line on the bottom gives you some summary information
about the archive -- total files, uncompressed and compressed
bytes, compression percentage, and PKZIP version number (in the
case of ZR).
The PKZIP version number is the oldest version of PKZIP which
was used in creating the archive. USUALLY (as in almost all of
the time) all files in an archive will have been archived using
the same version, but this isn't necessarily the case -- files
can be added to an existing archive and the versions don't
necessarily have to match.
X-Ray 1.02 7
2,1 COMSPEC Variable.
----------------------
In order for any of the X-Ray viewers to work, your COMSPEC
environment variable must be set. This variable tells ZR
{AR,LR,ZOR} the name and the location of the command interpreter to
use when it shells to the appropriate archive program. Without
a COMSPEC variable, ZR will display a file listing, but you will
be unable to view the contents of files. AR, LR, and ZOR will not
even get this far since they depend on the archive program
itself to generate the file list.
To set the COMSPEC variable, include a line such as:
SET COMSPEC=C:\COMMAND.COM
in your AUTOEXEC.BAT file. The above example is typical for a
hard disk system but other COMSPEC lines such as:
SET COMSPEC=C:\4DOS.COM and
SET COMSPEC=\COMMAND.COM
are also possible. The former uses J.P. Software's excellent
4DOS as the shell and the latter uses COMMAND.COM on the current
logical disk (This would be common for a floppy-only system).
You can view your environment settings at any time
by typing SET at the DOS prompt.
(Actually with recent versions of 4DOS, it probably isn't
necessary to set a COMSPEC since 4DOS is smart enough to use an
intelligent default. Still, it doesn't hurt. And it MUST be
set if you use the standard DOS COMMAND.COM shell.)
X-Ray 1.02 8
3.0 Customizing ZR, AR, ZOR, and LR.
----------------------------------------
I haven't gone and written a fancy user-friendly configuration
program for these programs, but you can do some limited
modification if you have a hex editor of some sort such as
Norton's DiskEdit or NU. Debug will also do in a pinch for the
more adventurous.
MAKE ALL MODIFICATIONS ON A COPY! ALSO -- make sure that the
rev of the program matches this documentation since the offsets
could change between revisions!
Colors:
-------
Variable Offset Default
-------- ------ -------
C_NORMAL 0Eh 02h
C_INVERSE 0Fh 74h
C_INTENSE 10h 03h
C_BORDER 11h 4Eh
C_BORDER is the attribute for the window border, C_INTENSE for
the heading in the window, C_INVERSE for the bar. The color
values are in standard DOS combined foreground/background format.
See the Appendix for details on the values you can enter.
The value at offset 11h can be changed from a 0 to a 1 to
disable the archive file delete function.
Command Lines:
-------------
The default command line for the viewer is:
ZR: PKUNZIP -c ~ ` | list /s
AR: ARJ p ~ ` | list /s
LR: LHA p ~ ` | list /s
ZOR: ZOO -p ~ ` | list /s
and resides from offset 16h through 33h, padded with spaces
(20h). (These offsets, like those for the colors, are relative
to the beginning of the file at 0000h.) If you modify this
command line, be careful not to overflow the space allotted to
it (there's a NULL (00) on the end) or the results will likely
be very unpleasant.
X-Ray 1.02 9
The default command line for the Archive extract is:
ZR: PKUNZIP ~ `
AR: ARJ e ~ `
LR: LHA e ~ `
ZOO: ZOO -e ~ `
and resides from offsets 38h through 55h.
The default command line for the Archive delete is:
ZR: PKUNZIP -d ~ `
AR: ARJ d ~ `
LR: LHA d ~ `
ZOO: ZOO -d ~ `
and resides from offsets 5Ah through 77h.
In addition, LR, AR, and ZOR specify a command line which
extracts the archive file list information to a temporary file.
The equivalent line does not exist in ZR because ZR does its own
decoding of the archive.
The default command line for this is:
AR: UNARJXR ~ > xr99tmp
LR: LHA ~ > xr99tmp
ZOR: ZOO VC ~ > xr99tmp
and resides from offsets 7Ch through 99h.
The temporary file name, which must match the name in the
above command line, resides from 9Bh through A8h.
X-Ray 1.02 10
4.0 Configuring DF to use ZR:
--------------------------------
This is also very easy. Just configure SmartViewer lines (using
DFCONFIG) to read:
Command line Extension
------------ ---------
ZR ~ ZIP
AR ~ ARJ
LR ~ LZH
ZOR ~ ZOO
When you highlight an archive file with DF and press the <Enter>
key, you will pop directly into the file listing window of the
appropriate utility from which you can select files to view. No
file names to type! Isn't that easy? Of course, you can
also setup standard user-defined function keys if you wish.)
5.0 Technical and Acknowledgments.
--------------------------------------
ZR does its own decoding of a ZIP archive file by reading in the
central directory structure. It will read all versions of PKZIP
archives up to and including at least version 1.10.
LR, and ZOR on the other hand, create a temporary file which
contains the contents of an archive listing generated by the
archiver itself. This archive listing is then parsed into the
appropriate format for the scrollable display. The programs
were developed using Lharc (LHA) 2.10, and ZOO 2.1.
Differences in the archive display format in either program
could therefore cause difficulties. AR does something similar
but because of some problems caused by changing formats, it
uses a modified version of ARJ's demo viewer to generate the
listing.
One of these days, my goal is to write native mode decoders for
at least ARJ.
ZR, AR, ZOR, and LR were written using Borland's Turbo Assembler
2.5 and Turbo Debugger 2.5, American Cybernetic's Multi-Edit
4.0, and Base Two Development's Spontaneous Assembly assembler
library 2.0.
The hardware environment was a homebrew 386 (named Dejah Thoris)
based on an AMI 20MHz full-size motherboard with a Micropolis
160MB ESDI disk and Ultrastore 12(F) ESDI controller. It is a
dual monitor system with an Orchid Prodesigner 512KB VGA board
and an IBM MDA board.
Last, but certainly not least, thanks to my Directory Freedom
beta crew who have also helped out in debugging ZR as well.
X-Ray 1.02 11
6.0 Other Programs from Gordon Haff and Bit Masons Consulting:
-----------------------------------------------------------------
Directory Freedom (DF):
Offers users a fast, compact alternative to DOS Shells which
provides 1) selective file and directory operations; 2) a
scrollable environment for examining files and directories; 3)
user-defined keys which can operate upon highlighted files
(e.g. by defining an editor). All this in a program which
takes less than 25KB since it is written in assembler! Easily
customized through an external configuration program. A "look-
and-feel" similar to PC Mag's DR, but does much more. Now with
SmartViewers and many more exciting new features.
Shareware: $20 Registration
Latest version: 4.50 (DF450.ZIP)
the last word:
'the last word' is a quotations trivia game in which 1 to 4
players compete against each other and their own high scores in
identifying the source of quotations and completing partial
quotes. Most answers are entered free-form and are matched
against a set of acceptable responses with a sophisticated
pattern-recognition algorithm. 'the last word' runs in text
mode -- including on mono displays -- and offers a high level
of user configurability.
Shareware: $15 Registration
Latest version: 1.00 (LWORD100.ZIP)
Name Date:
Renames a file to a template such as the current date. In
other words, if the current date were 10-06-90, the file
'FILENAME.QWK' would be renamed to 901006.QWK. Version 2.0
is highly configurable with many command-line options
including the complete specification of the format template
to be used for renaming. This is a handy program for
archiving message packets from bulletin boards, for example.
Free, copyrighted software
Latest version: 2.0 (NAMD200.ZIP)
Convert:
Unit conversion calculator for Windows 3.0. Comes with a data
file containing a large number of common (and not so common)
conversions in categories such as length, speed, pressure,
volume, and time. The data file is a plain ASCII text file so
the user may add or delete units to best fit his individual
needs.
Free, copyrighted software
Latest version: 1.01 (CNVRT101.ZIP)
X-Ray 1.02 12
Volume label Edit and Copy:
Edit, delete, and copy volume labels. Will use absolute disk
read/write operations as required to deal with "non-standard"
volume labels such as those with lower case characters. The
Copy function could be used as part of a batch file to backup
distribution disks to a different sized floppy.
Free, copyrighted software
Latest version: 1.10 (VEC110.ZIP)
MAKETEST:
Command-line utility to create test files. Lets you create
any number of test files with user-specified names and sizes.
Automatically can add characters to avoid duplicate names.
This is an easy way to create something like 100 zero-length
files. Handy for users or programmers who want to test a
program's capabilities.
Free, copyrighted software with QB source
Latest version: 1.0 (MKTST100.ZIP)
These programs and others (Multi-Edit macros for use with Qmail
Deluxe, for example) are available on many fine bulletin boards.
The latest releases are always available on Channel One. If you
just have to get a copy of one or more of these programs and
can't find one, however, I can send them out for a nominal media
and postage charge.
X-Ray 1.02 13
7.0 History:
---------------
ZR:
---
Rev. 1.26 Added delete archive file option
Rev. 1.25 Changed display routines so directory no longer
overlaid over previously viewed file
Added bottom totals/version display
Rev. 1.24 Additional memory management modifications
Rev. 1.23 Rewrote memory management so that larger (in
terms of number of ZIPped files) archives can be
handled (archives containing > 256 files at
least are OK)
/n command-line to optionally sort list is
ascending filename order
Name changed from ZV (ZipView) to ZR (Z-Ray)
Rev. 1.22 Corrected error message for when not enough
memory to store interpreted file names
Rev. 1.21 Fixed another big with <End> and <PgDn> keys when
directory less than a screenful
Rev. 1.20 Fixed bug with <End> key when cursor at bottom of
directory
Added <PgUp> and <PgDn> keys
Added Extract Archive function
Rev. 1.11 Fixed problem when SHARE was installed (Thanks to
Dr. Herbert Markley for finding this -- the .ZIP
file wasn't closed when the EXEC occurred and
PKUNZIP, being the well written program that it
is, was rightly refusing to have anything to do
with the file as a consequence.)
Rev. 1.10 Fixed display problem on monochrome systems
Fixed problems with ZIP files < 10Kbytes
Rev. 1.0 Initial Release
AR:
---
Rev. 1.10 By using a modified version of the UNARJ extract
program (called UNARJXR.EXE), AR can now handle a
variety of ARJ archives it was choking on (Rev
2.30, environment settings, etc.)
Rev. 1.01 Added delete archive file option
Rev. 1.0 Initial Release
LR:
---
Rev. 1.01 Added delete archive file option
Rev. 1.0 Initial Release
ZOR:
----
Rev. 1.0 Initial Release
X-Ray 1.02 13
8.0 Known Limitations and Peculiarities:
--------------------------------------------
(i.e. These are free programs and I got tired of beating out my
brains over it for the time being.)
All:
----
o The piping mechanism to LIST can truncate long files.
Unfortunately, there is no warning that such truncation
has taken place.
ZR:
---
o Truncates the display of files archived with their paths
and will not pipe them to the viewer properly if the
entire path and filename is greater than 13 characters.
AR,LR:
------
o Will not handle paths
o Rely on a specific file display format generated by the
archiver (not really true any longer with AR)
ZOR:
----
o As for AR, LR
o Sometimes the file display as piped to LIST comes out
double-spaced. I'm not sure of the reason for this, but
it is not a function of ZOR; you will obtain the same result
if you pipe an archived file to LIST from the DOS command
line.
X-Ray 1.02 14
APPENDIX A
COLORS
The color number stored for use in ZR, AR, LR, and ZOR are
combined foreground/background attributes of the type used by
DOS. This combined attribute value is simply the foreground and
background numbers, as given below, bit-wise OR'd together.
That's a fancy way of saying added together for our purposes
here. (Remember though that these are hexadecimal numbers.)
For example, yellow on a blue background is given by 1Eh (0Eh +
10h).
Foreground (normal) Foreground (intense) Background
--------------------------------------------------------------
0 black 8 dark gray 0 black
1 blue 9 light blue 10h blue
2 green 0Ah light green 20h green
3 cyan 0Bh light cyan 30h cyan
4 red 0Ch light red 40h red
5 magenta 0Dh light mag. 50h magenta
6 brown 0Eh yellow 60h brown
7 gray 0Fh intense white 70h gray