An experimental diff library for generating operation deltas that represent the difference between two sequences of comparable items.
Project description
Deltas
======
An open licensed (MIT) library for performing generating deltas (A.K.A sequences
of operations) representing the difference between two sequences of comparable
tokens.
* **Installation:** **TODO**
* **Repo**: `http://github.com/halfak/Deltas`_
* **Documentation**: `http://pythonhosted.org/deltas/`_
* Note this library requires Python 3.3 or newer
This library is intended to be used to make experimental difference detection
strategies more easily available. There are currently two strategies available:
``deltas.sequence_matcher.diff(a, b)``:
A shameless wrapper around `difflib.SequenceMatcher` to get it to work
within the structure of *deltas*.
``deltas.segment_matcher.diff(a, b, segmenter=None)``:
A generalized difference detector that is designed to detect block moves
and copies based on the use of a ``Segmenter``.
:Example:
>>> from deltas import segment_matcher, text_split
>>>
>>> a = text_split.tokenize("This is some text. This is some other text.")
>>> b = text_split.tokenize("This is some other text. This is some text.")
>>> operations = segment_matcher.diff(a, b)
>>>
>>> for op in operations:
... print(op.name, repr(''.join(a[op.a1:op.a2])), repr(''.join(b[op.b1:op.b2])))
...
equal 'This is some other text.' 'This is some other text.'
insert ' ' ' '
equal 'This is some text.' 'This is some text.'
delete ' ' ''
======
An open licensed (MIT) library for performing generating deltas (A.K.A sequences
of operations) representing the difference between two sequences of comparable
tokens.
* **Installation:** **TODO**
* **Repo**: `http://github.com/halfak/Deltas`_
* **Documentation**: `http://pythonhosted.org/deltas/`_
* Note this library requires Python 3.3 or newer
This library is intended to be used to make experimental difference detection
strategies more easily available. There are currently two strategies available:
``deltas.sequence_matcher.diff(a, b)``:
A shameless wrapper around `difflib.SequenceMatcher` to get it to work
within the structure of *deltas*.
``deltas.segment_matcher.diff(a, b, segmenter=None)``:
A generalized difference detector that is designed to detect block moves
and copies based on the use of a ``Segmenter``.
:Example:
>>> from deltas import segment_matcher, text_split
>>>
>>> a = text_split.tokenize("This is some text. This is some other text.")
>>> b = text_split.tokenize("This is some other text. This is some text.")
>>> operations = segment_matcher.diff(a, b)
>>>
>>> for op in operations:
... print(op.name, repr(''.join(a[op.a1:op.a2])), repr(''.join(b[op.b1:op.b2])))
...
equal 'This is some other text.' 'This is some other text.'
insert ' ' ' '
equal 'This is some text.' 'This is some text.'
delete ' ' ''
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