[Patches] [ python-Patches-1436130 ] Incremental codecs

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Patches item #1436130, was opened at 2006-02-21 20:32
Message generated for change (Comment added) made by lemburg
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Category: None
Group: Python 2.5
Status: Open
Resolution: None
Priority: 5
Submitted By: Walter Dörwald (doerwalter)
Assigned to: M.-A. Lemburg (lemburg)
Summary: Incremental codecs

Initial Comment:
This patch extends the codec machinery to add
incremental codecs: stateful codecs that don't use a
stream API. It adds the following stuff: a class
codecs.CodecInfo (a subclass of tuple), that is used as
the return value of codecs.lookup();
codecs.IncrementalEncoder and codecs.IncrementalDecoder
(the basic interface classes),
codecs.BufferedIncrementalDecoder (a class that can be
used to implement decoders that must handle incomplete
input); codecs.iterencode() and codecs.iterdecode()
(generators that use the incremental codecs for
encoding/decoding an input iterable). On the C level
PyCodec_IncrementalEncoder() and
PyCodec_IncrementalDecoder() are added.

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>Comment By: M.-A. Lemburg (lemburg)
Date: 2006-03-03 00:03

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Very nice ! 

This is a much better approach than the feed style path you
wanted to take previously.

Minor nits:

Please separate out the non-related changes to the IDNA
codec into a new patch and assign that to Martin for review.

Is it possible to make IncrementalEncoder/Decoder instances
iterable per-se (without the need to go through the helper
functions iterencode/iterdecode) ?

Thanks.

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Comment By: Walter Dörwald (doerwalter)
Date: 2006-03-01 15:47

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This third version of the patch fixes the bug when the
iterator in iterencode() or iterdecode() is empty and
updates the docstring in encodings/__init__.py.


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Comment By: Walter Dörwald (doerwalter)
Date: 2006-02-28 13:08

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This second version of the patch enhances
codecs.iterencode() and codecs.iterdecode(), so that
additional keyword arguments are passed through to the
Incremental(De|En)coder constructor.

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