Metadata-Version: 2.1
Name: ppmd-cffi
Version: 0.5.0
Summary: PPMd compression/decompression library
Home-page: http://github.com/miurahr/ppmd
Author: Hiroshi Miura
Author-email: miurahr@linux.com
License: LGPL-2.1+
Keywords: ppmd,7-zip,compression
Platform: UNKNOWN
Classifier: Development Status :: 4 - Beta
Classifier: License :: OSI Approved :: GNU Lesser General Public License v2 or later (LGPLv2+)
Classifier: Operating System :: MacOS :: MacOS X
Classifier: Operating System :: Microsoft :: Windows
Classifier: Operating System :: POSIX
Classifier: Operating System :: POSIX :: Linux
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.6
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3 :: Only
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Description-Content-Type: text/x-rst
Provides-Extra: test
Provides-Extra: check
Provides-Extra: docs
Provides-Extra: fuzzer
License-File: LICENSE

===============
PPMd for python
===============

.. image:: https://readthedocs.org/projects/ppmd-cffi/badge/?version=latest
  :target: https://ppmd-cffi.readthedocs.io/en/latest/?badge=latest

.. image:: https://badge.fury.io/py/ppmd-cffi.svg
  :target: https://badge.fury.io/py/ppmd-cffi

.. image:: https://github.com/miurahr/ppmd-cffi/workflows/Run%20Tox%20tests/badge.svg
  :target: https://github.com/miurahr/ppmd-cffi/actions

.. image:: https://coveralls.io/repos/github/miurahr/ppmd-cffi/badge.svg?branch=main
  :target: https://coveralls.io/github/miurahr/ppmd-cffi?branch=main





PPM(Prediction by partial matching) is a compression algorithm which has several variations of implementations.
PPMd is the implementation by Dmitry Shkarin. It is used in the RAR and by 7-Zip as one of several possible methods.

ppmd-cffi is a python bindings with PPMd implementation by C language.
The C codes are derived from p7zip, portable 7-zip implementation.
ppmd-cffi supports PPMd var.H and PPMd var.I.


PyPPMd_ is a brother project that use python buffer protocol for interface.
It supports PPMd var.H, and PPMd var. I on posix platforms(mac and linux).
It supports CPython and PyPy. 

.. _PyPPMd: https://pypi.org/project/pyppmd/

Manuals
=======

You can find a manual at the readthedocs_

.. _readthedocs: https://ppmd-cffi.readthedocs.io/en/latest/user_guide.html


Installation
============

As usual, you can install ppmd-cffi using python standard pip command.

.. code-block::

    pip install ppmd-cffi


Command
=======

ppmd-cffi provide small utility compress/decompress files.

.. code-block::

    $ ppmd target.txt
    $ ppmd -x target.txt.ppmd


License
=======

* Copyright (C) 2020,2021 Hiroshi Miura

* 7-Zip Copyright (C) 1999-2010 Igor Pavlov
* LZMA SDK Copyright (C) 1999-2010 Igor Pavlov

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301  USA


