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1995-04-22
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Version Detective Antic December, 1988
(synopsis)
Version Detective is a Basic utility which will compare two files, at
machine language speeds, and let you know whether or not they are
identical. This is an extremely useful utility for BBS Sysops (who may
find themselves confronted with several files that have the same
name), and programmers (who may not be sure whether two files contain
the same version of a program.)
The program works with ANY type of file. It will compare pairs of
files written in any programming language, text editor, or word
processor. And there is NO LIMIT to the length of the files. In
several tests, Version Detective compared 200 sector disk files in
less than 90 seconds.
GETTING STARTED
When RUN, Version Detective will display a disk directory and ask you
for the name of the first file to compare. If your file is on Drive
#1, you needn't type the "D1:" prefix. Just type the filename and
RETURN. If on another drive, include the Drive number.
If you need to see a directory of another disk, place it in Drive 1
and press RETURN. Version Detective will display a fresh directory and
then ask you for the second filename.
Version Detective will quickly compare the two files byte-by-byte and
STOP when it finds the first mismatch. If will also tell you if one
file is longer than the other.
When the first mismatch occurs, Version Detective displays the
mismatch in a pair of error windows. Each window shows a 256 byte
block of the file. The left window corresponds to the first file, the
right window shows the second file.
Each window is approximately 19 characters wide, and 14 characters
tall. Any [RETURN] symbols will make the window taller. If your file
has an abundance of [RETURN]s, the tops of your error windows may
scroll off the top of the screen.
The mismatched byte is displayed below it's corresponding error
window. Version Detective tells you the location of the mismatch in
the file, as well as location in the error window. For example, a
sample error reported might read: "Mismatch at byte #515, (Byte #3 in
the error window.")
(bio) Rochester, New York physician Jeffrey Summers is also the
author of the ANTIC DATA-X Data Base.