OpenStack library for serialization
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Victor Stinner e49e812900 Add utilities for base64
Writing a code using the base64 module (of the Python standard
library) working on Python 2.7 and 3.4 requires many checks on the
input and/or output type:

* base64.b64encode() only accepts byte string: text must be
  explicitly encoded to ASCII
* base64.b64decode() returns bytes: output must be decoded from UTF-8
  when text is expected

This change adds two pairs of encode/decode functions:

* encode_as_bytes(), decode_as_bytes(): always return the result as
  a byte string
* encode_as_text(), decode_as_text(): always return the result as a
  text string

Encode functions accept text: text is encoded to UTF-8 by default,
but the encoding is configurable.

Decode functions accept text: text is decoded from ASCII.

decode_as_text() decodes the result from UTF-8 by default, but again
the encoding is configurable.


The new submodule is called "base64" to be able to replace:

    import base64

with:

    from oslo_serialization import base64

If the base64 module of the stdlib is needed, it can be imported as a
different name. Example:

    import base64 as std_base64


The encoding example:

    if isinstance(text, six.text_type):
       text = text.encode('utf-8')
    text_b64 = base64.b64encode(text)
    text_b64 = text_b64.decode('ascii')

can be replaced with:

    text_b64 = base64.encode_as_text(text)


The decoding example:

    if isinstance(encoded, six.text_type):
       encoded = encoded.decode('ascii')
    text = base64.b64decode(encoded)
    text = text.decode('utf-8')

can be replaced with:

    text = base64.decode_as_text(text)

Change-Id: Icf8df9c947bc0c5f4838508b756ed8f53efd9fc4
2015-10-01 14:32:29 +00:00
doc/source Add utilities for base64 2015-10-01 14:32:29 +00:00
oslo_serialization Add utilities for base64 2015-10-01 14:32:29 +00:00
.coveragerc Change ignore-errors to ignore_errors 2015-09-21 14:43:30 +00:00
.gitignore exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
.gitreview exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
.mailmap exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
.testr.conf Fixes wrong folder for listing tests 2015-04-27 15:00:14 +02:00
babel.cfg exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
CONTRIBUTING.rst Workflow documentation is now in infra-manual 2014-12-05 03:30:39 +00:00
HACKING.rst exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
LICENSE exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
MANIFEST.in exported from oslo-incubator by graduate.sh 2014-07-14 17:54:12 +00:00
README.rst Add utilities for base64 2015-10-01 14:32:29 +00:00
requirements.txt Updated from global requirements 2015-09-17 12:16:12 +00:00
setup.cfg Remove oslo namespace package 2015-06-27 16:24:23 -04:00
setup.py Updated from global requirements 2015-09-17 12:16:12 +00:00
test-requirements.txt Updated from global requirements 2015-08-31 15:35:36 +00:00
tox.ini Add tox target to find missing requirements 2015-06-27 16:24:55 -04:00

oslo.serialization

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The oslo.serialization library provides support for representing objects in transmittable and storable formats, such as Base64, JSON and MessagePack.