Tlzrw1 : compression component with LZH and LZRW1/KH compression
Version 1.01.00 : Danny Heijl (Danny.Heijl@cevi.be)
The LZH and LZRW1/KH routines are from the SWAG.
They are basically unchanged, I only added exceptions
and some cosmetic changes to the code, and added 32 bit support.
Version 1.01.01 :
*****************
May 97 :
1. Corrected a bug in the LZRW1/KH compression discovererd by
Domionque Willems (Domus@compuserve.com).
2. Added a Delphi help File, and a HTML description file
Version 2.00.00 :
*****************
25 May 1997 (stefan.westner@stud.uni-bamberg.de)
Code for using a Stream instead of a File added by Stefan Westner.
30 May 1997 (danny.heijl@cevi.be)
I removed the Seeks to the beginning of the stream (except in auto guess)
and the Clear call, so that you can use TFilestream with more freedom,
or THandleStream.
I also changed all string literals to const's so you can translate them more easily.
(Should be made into resourcestrings for D3).
18 July 1997 (danny.heijl@cevi.be)
Added a "Threshold" property that specifies the compression ratio for the Advise function
(and for compression with "auto" compression-mode).
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file name : tlzrw1.zip
replaces : tlzrw1.zip
file version : 2.00
file description: freeware file compression/decompression component with source
target : Delphi 1.0, 2.0, 3.0
author name : Danny Heijl (Danny.Heijl@cevi.be)
author URL : http://www.cevi.be/pp/danny/dhe.htm
file status : freeware
full source : included
category : compression component
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Installation instructions :
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1. copy compon\*.* to your component directory
2.
16 bit : install tlzrw116.pas in your component library
32 bit : install tlzrw132.pas in your component library
3. rebuild the component library.
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From this moment on you can excercize the test application compressp.dpr.
Or you can play with "tlzrw1" yourself.
Tlzrw1 presents itself as a panel that shows compression/decompression
progress if you set it's Visible proprty to True.
Properties :
------------
inputfile
outputfile
Threshold
compressmode : good (LZH, slow), fast (LZRW1/KH) or auto (takes a sample and chooses).
UseStream
InputStream
OutputStream
Methods :
---------
compress
decompress
advise : returns good or fast compressmode for inputfile