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Additional EBCDIC codecs

Project Description
ebcdic
======

Ebcdic is a Python package adding additional EBCDIC codecs for data
exchange with legacy system. It works with Python 2.6+ and Python 3.1+.

EBCDIC is short for Extended Binary Coded Decimal Interchange Code and is
a family of character encodings that is mainly used on mainframe computers.
There is no real point in using it unless you have to exchange data with
legacy systems that still require it. To learn more about EBCDIC, you can
start at <https://en.wikipedia.org/wiki/EBCDIC>.


Installation
------------

Ebcdic is available from https://pypi.python.org/pypi/ebcdic and can be
installed using pip::

pip install ebcdic


Example usage
-------------

To encode `'hello world'` on EBCDIC systems in German speaking countries, use::

>>> import ebcdic
>>> 'hello world'.encode('cp1141')
b'\x88\x85\x93\x93\x96@\xa6\x96\x99\x93\x84O'


Supported codecs
----------------

The `ebcdic` package includes EBCDIC codecs for the following regions:

* cp1140 - Australia, Brazil, Canada, New Zealand, Portugal, South Africa,
USA
* cp1141 - Austria, Germany, Switzerland
* cp1142 - Denmark, Norway
* cp1143 - Finland, Sweden
* cp1144 - Italy
* cp1145 - Latin America, Spain
* cp1146 - Great Britain, Ireland, North Ireland
* cp1147 - France
* cp1148 - international
* cp1149 - Iceland

It also includes legacy codecs:

* cp037 - Australia, Brazil, Canada, New Zealand, Portugal, South Africa;
similar to cp1140 but without Euro sign
* cp273 - Austria, Germany, Switzerland; similar to cp1141 but without Euro
sign
* cp277 - Denmark, Norway; similar to cp1142 but without Euro sign
* cp278 - Finland, Sweden; similar to cp1143 but without Euro sign
* cp280 - Italy; similar to cp1141 but without Euro sign
* cp284 - Latin America, Spain; similar to cp1145 but without Euro sign
* cp285 - Great Britain, Ireland, North Ireland; similar to cp1146 but
without Euro sign
* cp297 - France; similar to cp1147 but without Euro sign
* cp500 - international; similar to cp1140 but without Euro sign
* cp871 - Iceland; similar to cp1149 but without Euro sign
* cp1047 - Open Systems (MVS C compiler)

Codecs in the standard library overrule some of these codecs. At the time of
this writing this concerns cp037, cp273 (since 3.4), cp500 and cp1140.

To see get a list of EBCDIC codecs that are already provided by different
sources, use `ebcdic.ignored_code_names()`. For example, with Python 3.4::

>>> ebcdic.ignored_codec_names()
['cp037', 'cp1140', 'cp273', 'cp500']



Source code
-----------

These codecs have been generated using CodecMapper available from
https://github.com/roskakori/CodecMapper. Read the README in order to
to build the ebcdic package from source.

To add another 8 bit EBCDIC codec just extend the ant target `ebcdic` in
`build.xml` using a line like::

<arg value="cpXXX" />


License
-------

Copyright (c) 2014, Thomas Aglassinger
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.


Changes
-------

Version 0.7, 2014-11-17

* Clarified which codecs are already part of the standard library and that
these codecs overrule the `ebcdic` package. Also added a function
`ebcdic.ignored_code_names()` that returns the name of the EBCDIC codecs
provided by other means. To obtain access to `ebcdic` codecs overruled by
the standard library, use `ebcdic.lookup()`.
* Cleaned up (PEP8, __all__, typos, ...).


Version 0.6, 2014-11-15

* Added support for Python 2.6+ and 3.1+ (#1).
* Included a modified version of `gencodec.py` that still builds maps instead
of tables so the generated codecs work with Python version earlier than 3.3.
It also does a `from __future__ import unicode_literals` so the codecs even
work with Python 2.6+ using the same source code. As a side effect, this
simplifies building the codecs because it removes the the need for a local
copy of the cpython source code.


Version 0.5, 2014-11-13

* Initial public release
Release History

Release History

This version
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0.7.0

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0.6.0

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0.5.0

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