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Wrapper functions to interface to ZLIB, the free compression/decompression library.

Create/read/extract from .gz and .zip archives, move files between (.zip) archives, perform in-memory compression.

This has been revamped by Andreas Gehrs-Pahl to provide better support for .zip files, and there have been many changes (please see below).


Update History
Version Updated Description
1.4 13.01.2006 Not quite sure what changes have been made, but I guess some bug fixes.
1.1 20.12.2004 Remarks from AGP: 
I have finally managed to finish XbZLib Version 1.1! The new Version,
actually XbZLib Version 1.01.071, has several new features, and a virtually 
complete HTML Help Documentation. I have included all necessary files to 
recompile XbZLib, including Phil Ide's support files, as well as an Xbase++ 
Version 1.82.306-compiled Test/Demo program and the XbZLib DLL and LIB
files, the current ZLib.DLL (Version 1.2.1.1429), the compiled HTML Help
File, as well as the Help & Manual Project file and the HTML Help Source
Code files, in case you don't have H&M but would like to update the Help
file, as well as some Zip File and ZLib docs. This way, anyone can update
the program source code as well as the help file source code, if necessary!
1.0 22.11.2004
  • Better date/time stamp support
  • fixes to attribute settings
  • Added virtual file handling
  • fix to STORE data that is larger when 'compressed'
  • fix to allow directory trees to be added
  • updated sample applications
0.8 28.09.2004 Fixed an error xbzCompress2() where it didn't call the correct function in zlib.dll and didn't pass the correct parameters for the function it should have been calling.
0.7 23.02.2004 Updated the c support routine so that it doesn't request uuid.lib - which wasn't required anyway (this was an artifact of VC++ compilation).
0.6 19.01.2004 Fix to .zip class - subfolder information was not being recorded properly
Some fixes to the documentation (bad hyperlinks, typo's)
0.5 19.12.2003 Fix to crc32 routine
Now creates .zip files manually, allowing better manipulation
.zip creation is faster
Can now query zip directory
Can exchange files between archives
Appropriate files are now STOREd
Individual or all files can extracted in a single call
File and Archive comments can be added
0.4 10.12.2003 Fix to .zip bugs. Now creates .zip archives correctly.
Included class to create .xip files
0.3 03.12.2003 This version can create (but not read) .zip files.
0.2 11.08.2003 This version includes all the Utility functions (except gzprintf(), which will not be implemented)
0.1 08.08.2003 Added Compress()/UnCompress()
These two functions take a character variable and compress/decompress in memory (does not resort to disk files)