this is the library to compress and decompress any file. I found it on Net

contrib
.......\16bit
.......\.....\deppack.nas
.......\.....\depptiny.nas
.......\.....\history.txt
.......\.....\makeit.bat
.......\ada
.......\...\ACU_Dos
.......\...\.......\apacdemo.ali
.......\...\.......\aplib.ali
.......\...\ACU_Win
.......\...\.......\apacdemo.ali
.......\...\.......\aplib.ali
.......\...\apacdemo.adb
.......\...\aplib.adb
.......\...\aplib.ads
.......\...\aPLibAda.txt
.......\...\gnat.ago
.......\...\mk_aonix.bat
.......\...\mk_gndos.bat
.......\...\mk_gnwin.bat
.......\bcb
.......\...\apacksamplec.cpp
.......\...\apacksamplec.h
.......\...\aptest.bpr
.......\...\aptest.cpp
.......\...\aptest.res
.......\...\LibForDll
.......\...\.........\aplib.lib
.......\...\MainFormUnit.cpp
.......\...\MainFormUnit.ddp
.......\...\MainFormUnit.dfm
.......\...\MainFormUnit.h
.......\...\README_ABOUT_APLIB_DLL.txt
.......\delphi
.......\......\aplib.pas
.......\......\aplibu.pas
.......\......\aplibud.pas
.......\......\aptest.dof
.......\......\aptest.dpr
.......\......\aptest.res
.......\......\makefile
.......\......\t_main.dfm
.......\......\t_main.pas
.......\dotnet
.......\......\appack.cs
.......\......\IbsenSoftware
.......\......\.............\aPLib
.......\......\.............\.....\AssemblyInfo.cs
.......\......\.............\.....\DllInterface.cs
.......\......\mk.bat
.......\masm32
.......\......\ap.ico
.......\......\aplib.inc
.......\......\appack.asm
.......\......\appack.inc
.......\......\ctrls.asm
.......\......\file0750.bmp
.......\......\filedlgs.asm
.......\......\makeit.bat
.......\......\rsrc.rc
.......\......\tbmacros.asm
.......\......\toolbar.asm
.......\PowerBuilder
.......\............\example.txt
.......\............\str_filetime.srs
.......\............\str_netresource.srs
.......\............\str_ofstruct.srs
.......\............\str_overlapped.srs
.......\............\str_security_attibutes.srs
.......\............\uo_external_function_compression.sru
.......\............\uo_external_function_winapi.sru
.......\tmt
.......\...\aplibu.pas
.......\...\appack.pas
.......\...\apunpack.pas
.......\...\makeit.bat
.......\VB6
.......\...\maPLib.bas
.......\vpascal
.......\.......\aplib.def
.......\.......\aplibu.pas
.......\.......\aplibud.pas
.......\.......\appack.pas
.......\.......\apunpack.pas
.......\.......\descript.ion
.......\.......\make_exe.cmd
.......\.......\test_exe.cmd
.......\.......\vpc.cfg
doc
...\aPLib-1.01.chm
...\html
...\....\acknowledgements.html
...\....\ahob.css
...\....\changes.html
...\....\compression.html
...\....\decompression.html
...\....\general.html
...\....\index.html
...\....\license.html

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