Usenet 1993 July/InfoMagic USENET CD-ROM July 1993.ISO/sources/misc/volume26/freeze/patch01.1

Text File | 1991-11-30 | 5.5 KB | 210 lines

Newsgroups: comp.sources.misc
From: [e-mail] (Leonid A. Broukhis)
Subject:  v26i093:  freeze - Freeze/melt compression program, Patch01.1
Message-ID: <[e-mail]>
X-Md4-Signature: 7b8bf2408a08a597b37c3b32d5ecbee6
Date: Sat, 30 Nov 1991 21:18:40 GMT
Approved: [e-mail]

Submitted-by: [e-mail] (Leonid A. Broukhis)
Posting-number: Volume 26, Issue 93
Archive-name: freeze/patch01.1
Environment: ISC, Xenix, SunOS, MS-DOS
Patch-To: freeze: Volume 25, Issue 12-13

Here is the file statist.1 that was missing from the last patch. Please
cd into the freeze directory and unshar this file.

================================================================
#! /bin/sh
# This is a shell archive.  Remove anything before this line, then feed it
# into a shell via "sh file" or similar.  To overwrite existing files,
# type "sh file -c".
# The tool that generated this appeared in the comp.sources.unix newsgroup;
# send mail to [e-mail] if you want that tool.
# Contents:  statist.1
# Wrapped by kent@sparky on Sat Nov 30 15:11:20 1991
PATH=/bin:/usr/bin:/usr/ucb ; export PATH
echo If this archive is complete, you will see the following message:
echo '          "shar: End of archive."'
if test -f 'statist.1' -a "${1}" != "-c" ; then
  echo shar: Will not clobber existing file \"'statist.1'\"
else
  echo shar: Extracting \"'statist.1'\" \(3285 characters\)
  sed "s/^X//" >'statist.1' <<'END_OF_FILE'
X.PU
X.TH STATIST 1 local
X.SH NAME
Xstatist  \-  calculate Huffman distribution for
X.IR freeze "(1)"
X.SH SYNOPSIS
X.ll +8
X.B statist
X[
X.B \-g...
X]
X.ll -8
X.br
X.SH DESCRIPTION
XThe default table is tuned for both C texts and executable files (as in
XLHARC). If you will freeze any other files (natural language texts,
Xdatabases, images, fonts, etc.) you can calculate the matching
Xpositions distribution using the
X.B "`statist'"
Xprogram, which calculates and displays the mentioned
Xdistribution for the given file. It is useful for large (100K or more)
Xfiles.
X
XThough the built-in position table is polyvalent, the tuning can increase
Xthe compression rate up to one additional percent. (Observed mainly on
Xtext files.)
X.SH USAGE
X.br
X.B statist [\-g...] < sample_file
X.in +8
Xor
X.in -8
X.B gensample | statist [\-g...]
X.br
Xwhere
X.B "`gensample'"
Xis a program generating some sample stream of
Xbytes similar to files to be frozen.
X.PP
XThe
X.B \-g
Xswitch has the same meaning as for
X.IR freeze "(1)"
Xand may be repeated.
X.PP
XYou can also see the intermediate values
Xand watch their changes by pressing INTR key when you wish.
X.PP
XNote: If you use
X.B "gensample | statist"
X, remember that INTR influence BOTH
Xprocesses !!
X.br
XThe results have the following format:
X.br
X.I "n1 n2 n3 n4 n5 n6 n7 n8"
X(uncertainty =
X.I x)
X.br
XAverage match length:
X.I xx.yy
X.br
XPercentile 99.9:
X.I p999
X.br
XPercentile 99.5:
X.I p995
X.br
XPercentile 99.0:
X.I p990
X.br
XPercentile 97.0:
X.I p970
X.br
XPercentile 95.0:
X.I p950
X.br
XPercentile 90.0:
X.I p900
X.br
XPercentile 80.0:
X.I p800
X.br
XPercentile 70.0:
X.I p700
X.br
XPercentile 50.0:
X.I p500
X.br
XSigma:
X.I xx.yy
X.br
X.PP
XHere
X.I n1 \- n8
Xare values of the calculated position table elements,
Xuncertainty is a number which denotes validity of given results
X(non-zero values of uncertainty indicate that the
Xresults may be unusable). Other values (average match length,
Xpercentiles and sigma) are FYI only.
X.PP
XYou may create the
X.IR /etc/default/freeze
Xfile (if you don't like
X.IR /etc/default/
Xdirectory, choose another - in MS-DOS it is FREEZE.CNF in
Xthe directory of FREEZE.EXE), which has the following format:
X.in +8
X.I name
X=
X.I "n1 n2 n3 n4 n5 n6 n7 n8"
X.in -8
X.I (name
Xmust start in column 1). For example:
X.ll +8
X.br
X---------- cut here -----------
X.br
X# This is freeze's defaults file
X.br
Xrussian=0 0 1 2 6 20 31 2   # The sample was mailx.lp (Russian)
X.br
Xenglish=0 0 1 2 7 16 36 0   # The sample was gcc.lp (English)
X.br
X# End of file
X.br
X---------- cut here -----------
X.ll -8
X.PP
XIf you find values, which are better THAN DEFAULT both for text (C
Xprograms) and binary (executable) files, please send them to me.
X
XImportant note: statist.c is NOT a part of freeze package, it is an
Xaditional feature.
X
X.SH "SEE ALSO"
Xfreeze(1), melt(1), fcat(1)
X.SH "DIAGNOSTICS"
XHuffman tree has more than 8 levels, reducing...
X.in +8
XSelf-explanatory, but sometimes reducing falls into infinite loop.
X.in -8
X.IR xxx K
X.in +8
XProgress indicator is written after each 4K of a file processed.
X.in -8
X.SH "BUGS"
XSometimes use of the results with uncertainty = 1 (on a file)
Xgives compression rate worse than default but use of the results
Xwith uncertainty = 13 (on other file) works quite good.
X.PP
XFound bugs descriptions, incompatibilities, etc.  please send to
[e-mail].
X
END_OF_FILE
  if test 3285 -ne `wc -c <'statist.1'`; then
    echo shar: \"'statist.1'\" unpacked with wrong size!
  fi
  # end of 'statist.1'
fi
echo shar: End of archive.
exit 0
================================================================
--
Leonid A. Broukhis | 89-1-95 Liberty St. | "BROUKHIS" is Hebrew for
[phone] (h)| Moscow 123481 Russia|       "BENEDICTAE"
[phone] (o)| ([e-mail]) |{...and the other says: "Fabulous!"}


exit 0 # Just in case...
--
Kent Landfield                   INTERNET: [e-mail]
Sterling Software, IMD           UUCP:     uunet!sparky!kent
Phone:    [phone]         FAX:      [phone]
Please send comp.sources.misc-related mail to [e-mail].