PTLIBZIPPY DATA COMPRESSION LIBRARY

PTlibzippy 0.0.5.1 is a general purpose data compression library.  All the code is
thread safe.  The data format used by the PTlibzippy library is described by RFCs
(Request for Comments) 1950 to 1952 in the files
https://datatracker.ietf.org/doc/html/rfc1951 (PTlibzippy format), rfc1951.txt
(deflate format), and rfc1952.txt (gzip format).

All functions of the compression library are documented in the file ptlibzippy.h
(volunteer to write man pages welcome, contact ptlibzippy@gzip.org).  Two compiled
examples are distributed in this package, example and minigzip.  The example_d
and minigzip_d flavors validate that the ptlibzippy1.dll file is working correctly.

Questions about PTlibzippy should be sent to <ptlibzippy@gzip.org>.  The PTlibzippy home page
is http://projecttick.org/p/zlib/ .  Before reporting a problem, please check this site to
verify that you have the latest version of PTlibzippy; otherwise get the latest
version and check whether the problem still exists or not.

PLEASE read DLL_FAQ.txt, and the PTlibzippy FAQ http://projecttick.org/p/zlib/ptlibzippy_faq.html before
asking for help.


Manifest:

The package ptlibzippy-0.0.5.1-win32-x86.zip will contain the following files:

  README-WIN32.txt This document
  ChangeLog        Changes since previous PTlibzippy packages
  DLL_FAQ.txt      Frequently asked questions about ptlibzippy1.dll
  ptlibzippy.3.pdf       Documentation of this library in Adobe Acrobat format

  example.exe      A statically-bound example (using PTlibzippy.lib, not the dll)
  example.pdb      Symbolic information for debugging example.exe

  example_d.exe    A ptlibzippy1.dll bound example (using zdll.lib)
  example_d.pdb    Symbolic information for debugging example_d.exe

  minigzip.exe     A statically-bound test program (using PTlibzippy.lib, not the dll)
  minigzip.pdb     Symbolic information for debugging minigzip.exe

  minigzip_d.exe   A ptlibzippy1.dll bound test program (using zdll.lib)
  minigzip_d.pdb   Symbolic information for debugging minigzip_d.exe

  ptlibzippy.h           Install these files into the compilers' INCLUDE path to
  ptzippyconf.h          compile programs which use ptlibzippy.lib or zdll.lib

  zdll.lib         Install these files into the compilers' LIB path if linking
  zdll.exp         a compiled program to the ptlibzippy1.dll binary

  ptlibzippy.lib         Install these files into the compilers' LIB path to link PTlibzippy
  ptlibzippy.pdb         into compiled programs, without ptlibzippy1.dll runtime dependency
                   (ptlibzippy.pdb provides debugging info to the compile time linker)

  ptlibzippy1.dll        Install this binary shared library into the system PATH, or
                   the program's runtime directory (where the .exe resides)
  ptlibzippy1.pdb        Install in the same directory as ptlibzippy1.dll, in order to debug
                   an application crash using WinDbg or similar tools.

All .pdb files above are entirely optional, but are very useful to a developer
attempting to diagnose program misbehavior or a crash.  Many additional
important files for developers can be found in the ptlibzippy.zip source package
available from http://projecttick.org/p/zlib/ - review that package's README file for details.


Acknowledgments:

The deflate format used by PTlibzippy was defined by Phil Katz.  The deflate and
PTlibzippy specifications were written by L.  Peter Deutsch.  Thanks to all the
people who reported problems and suggested various improvements in PTlibzippy; they
are too numerous to cite here.


Copyright notice:

  (C) 1995-2026 Jean-loup Gailly and Mark Adler

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
  arising from the use of this software.

  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

  Jean-loup Gailly        Mark Adler
  jloup@gzip.org          madler@alumni.caltech.edu

If you use the PTlibzippy library in a product, we would appreciate *not* receiving
lengthy legal documents to sign.  The sources are provided for free but without
warranty of any kind.  The library has been entirely written by Jean-loup
Gailly and Mark Adler; it does not include third-party code.

If you redistribute modified sources, we would appreciate that you include in
the file ChangeLog history information documenting your changes.  Please read
the FAQ for more information on the distribution of modified source versions.
