1 files changed, 117 insertions, 0 deletions
diff --git a/archived/ptlibzippy/README b/archived/ptlibzippy/README
new file mode 100644
index 0000000000..bf6403b141
--- /dev/null
+++ b/archived/ptlibzippy/README
@@ -0,0 +1,117 @@
+PTLIBZIPPY DATA COMPRESSION LIBRARY
+
+PTlibzippy 0.0.5.1 is a general purpose data compression library.  All the code is
+thread safe (though see the FAQ for caveats).  The data format used by the PTlibzippy
+library is described by RFCs (Request for Comments) 1950 to 1952 at
+https://datatracker.ietf.org/doc/html/rfc1950 (zlib format), rfc1951 (deflate
+format) and rfc1952 (gzip format).
+
+All functions of the compression library are documented in the file ptlibzippy.h
+(volunteer to write man pages welcome, contact community@community.projecttick.org).  A usage example
+of the library is given in the file test/example.c which also tests that
+the library is working correctly.  Another example is given in the file
+test/minigzip.c.  The compression library itself is composed of all source
+files in the root directory.
+
+To compile all files and run the test program, follow the instructions given at
+the top of Makefile.in.  In short "./configure; make test", and if that goes
+well, "make install" should work for most flavors of Unix.  For Windows, use
+one of the special makefiles in win32/ or contrib/vstudio/ .  For VMS, use
+make_vms.com.
+
+Questions about PTlibzippy should be sent to <community@community.projecttick.org>, or to Gilles Vollant
+<info@winimage.com> for the Windows DLL version.  The zlib home page is
+https://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 the PTlibzippy FAQ https://projecttick.org/p/zlib/zlib_faq.html before asking for help.
+
+Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan.  1997
+issue of Dr.  Dobb's Journal; a copy of the article is available at
+http://projecttick.org/p/zlib/nelson/ .
+
+The changes made in version 0.0.5.1 are documented in the file ChangeLog.
+
+Unsupported third party contributions are provided in directory contrib/ .
+
+PTlibzippy is available in Java using the java.util.zip package. Follow the API
+Documentation link at: https://docs.oracle.com/search/?q=java.util.zip .
+
+A Perl interface to zlib and bzip2 written by Paul Marquess <pmqs@cpan.org>
+can be found at https://github.com/pmqs/IO-Compress .
+
+A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
+available in Python 1.5 and later versions, see
+https://docs.python.org/3/library/zlib.html .
+
+PTlibzippy is built into tcl: https://wiki.tcl-lang.org/page/zlib .
+
+An experimental package to read and write files in .zip format, written on top
+of zlib by Gilles Vollant <info@winimage.com>, is available in the
+contrib/minizip directory of zlib.
+
+
+Notes for some targets:
+
+- For Windows DLL versions, please see win32/DLL_FAQ.txt
+
+- For 64-bit Irix, deflate.c must be compiled without any optimization. With
+  -O, one libpng test fails. The test works in 32 bit mode (with the -n32
+  compiler flag). The compiler bug has been reported to SGI.
+
+- PTlibzippy doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
+  when compiled with cc.
+
+- On Digital Unix 4.0D (formerly OSF/1) on AlphaServer, the cc option -std1 is
+  necessary to get gzprintf working correctly. This is done by configure.
+
+- PTlibzippy doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
+  other compilers. Use "make test" to check your compiler.
+
+- For PalmOs, see https://palmzlib.sourceforge.net/
+
+
+Acknowledgments:
+
+  The deflate format used by zlib was defined by Phil Katz.  The deflate and
+  zlib 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
+ (C) 2026 Project Tick
+
+  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                     Project Tick
+  jloup@gzip.org          madler@alumni.caltech.edu      projecttick@projecttick.org
+
+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 written by Jean-loup Gailly and Mark Adler;
+because Zlib based. it does not include third-party code. We make all contributions to
+and distributions of this project solely in our personal capacity, and are not conveying
+any rights to any intellectual property of any third parties. New maintainer is Project Tick
+
+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.
+
+Based on Zlib, Maintained by Project Tick Systems