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1993-03-20
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RV-RView, Version 2.50 20-Mar-93
Customizable archive lister & utility. Currently supported are ARC, ARJ,
HYP, LZH, LZS, PAK, SQZ, ZIP & ZOO. Displays ZIP- or LZH-style compression
ratios. Various sort options. Converts self-extracting archives back to
normal. Misc. other features.
Contents:
=========
Disclaimer
Purpose of program
Display
Command-line syntax
Valid switches
Configuration file
Keyboard program-pausing
Disclaimer:
===========
This program and the accompanying documentation are offered as is. This
program may be used to modify external files. The user bears the entire
risk of this software not performing as expected.
Purpose of program:
===================
To provide a single, stand-alone program capable of listing directories of
several archive formats. Since filename extensions are ignored in
determining archive types, this program may be used to determine the type of
archive even if the filename extension is missing, or inappropriate.
This utility also contains various features not conveniently provided
elsewhere at the time of their inclusion.
RView is a free program.
Display:
========
The type of archive is shown before listing each archive. For
self-extracting archives, the letters "SFX" follow the name of the base
archive type.
For ZIP 2.0-type archives, the four different variations for "deflating" are
reported as "Deflate", "DeflateX", "DeflateF" and "DeflateS" for normal,
maXimal, Fast and Super-fast compressions, respectively.
The Compression Ratio Percentage ("CR%") displayed by the program is one of
two types:
ZIP-style (default):
--------------------
100 - ( PackedSize / OriginalSize * 100 )
LZH-style:
----------
PackedSize / OriginalSize * 100
Since ZIP-style is the default, use the /A switch to select LZH-style.
The date and time indicated on the "totals" line represent the date and time
of the most recently created or modified member of each archive. These are
the values used by /R in resetting the archive date and time.
RView displays the total number of bytes required to contain the listed
files if extracted to a selected drive. If no drive is selected, the drive
containing the archive being listed is used. In making this computation,
RView takes actual disk cluster sizes into account.
Command-line syntax:
====================
Usage: RV [switches] archive [d:] [file...]
Switches may appear in almost any position on the command line. '-' may be
substituted for '/' wherever DOS allows.
An archive name specified without an extension will result in a search for
all extensions. Thus typing "RV filename" is equivalent to "RV filename.*".
Also, "RV *" is equivalent to "RV *.*".
An optional drive may be included immediately after the archive name to
check for extraction sizes to the indicated drive.
Example: RV backup.lzh a:
Result: Causes RView to compute extraction sizes for drive A:.
File specifications following the archive name will limit the listing to
only those files matching any of these specifications. The /U and /D
switches will be ignored in this case.
Example: RV source.zip *.h *.c
Result: Causes RView to list only C header and source files
contained within SOURCE.ZIP.
Valid switches:
===============
/A Alternate compression ratio. ZIP-style compression ratios are
displayed by default (see above). Use this switch to display
LZH-style ratios. (Tip: Include this switch in RV.CFG to always
display LZH-style ratios.)
/B Brief filenames. Use this switch to suppress the display of full
pathnames, i.e. only the filename.ext parts of full pathnames will
be shown.
/C[file] strip/attach zip file Comment. Strips file comments from ZIP
files. If a valid filename immediately follows "/C" (no
intervening spaces), then comments contained in that file will be
attached to the specified ZIP file(s).
/D sort lzh and zip files on Disk. LZH and ZIP files are written
back to disk in the order implied by the /S family of switches.
Nothing is done for already-sorted archives. Sorting to disk is
available so that LZH and ZIP files will be displayed in sorted
order by listers that don't do in-memory sorts. Also,
disk-sorting is useful for LZH SFX's when telops ('!' files) are
used.
/E remove extra spaces before the Extension in filenames. By
default, the part of the filename before the extension is padded
with spaces if less than 8 characters. Thus "NAME .EXT"
becomes "NAME.EXT".
/I Ignore rv.cfg file. This option was added by user request to
provide a means of overriding the defaults specified in RV.CFG.
/P Pause display after each screenful. After pausing, pressing
almost any key causes another screenful to be displayed.
/Q Quiet (suppress) listing. Added by user request to speed file
processing by BBS SysOps. Primarily intended for use in
conjunction with other switches which modify archives.
/R Reset date and time of archive. The date and time used will be
those of the most recently created or modified file in each
archive.
/Sx[-] Where 'x' represents N/E/D/O/P/R/U, as follows:
SN - Sort by Name (default)
SE - Sort by Extension
SD - Sort by Date/time
SO - Sort by Original size
SP - Sort by Packed size
SR - Sort by compression Ratio
SU - leave Unsorted
Appending a hyphen '-' to the above switches will reverse the
sense of the sort from ascending to descending.
/U[path] Un-sfx self-extracting archive. Converts self-extracting (SFX)
archives to normal archives. A new file will be created with the
same name as the SFX file but with the appropriate extension
(".ARC", ".LZH", etc.). The normal archive is written to the
current directory by default. "/U" followed immediately by a
valid path (no intervening spaces) allows writing to the specified
target drive/directory.
/V enable Verbose mode. Enables the display of comments and various
statistics related to the archive as a whole.
/W Wide display format. Displays up to five names per line.
/X strip eXtra bytes from end of archive. XMODEM-type file transfer
protocols often pad transferred files with added bytes. This will
truncate ARJ, LZH, LZS, PAK and ZIP archives to reflect their
"true" sizes.
Configuration file:
===================
An optional configuration file containing user-selected default switches may
be created or edited with any editor or word processor which can save pure
ASCII text files. This file should be named "RV.CFG" and placed in the same
directory from which RV.EXE is loaded (DOS 3.0 and above).
Switches, including switch options, may either be separated by spaces or
placed on separate lines.
Incompatible switches used on the command line will override switches
included in RV.CFG. Switches are evaluated from left to right on the
command line.
A sample RV.CFG file is included in the distribution archive for RView.
After extracting the contents of the distribution archive, RV.CFG may be
deleted if RView's defaults are satisfactory.
Keyboard program-pausing:
=========================
By user request, beginning with Version 2.34, the single-key,
program-pausing feature has been added back. While RView is displaying an
archive, pressing <Esc> will terminate execution. Almost any other key will
pause the display. After pausing, pressing <Esc> will terminate execution.
Again, almost any other key will resume execution.
--
Raymond T. Kaya
P. O. Box 1436
Honolulu, HI 96806
CompuServe: 71230,2500