aeson-diff: Extract and apply patches to JSON documents.

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This is a small library for working with changes to JSON documents. It includes a library and two command-line executables in the style of the diff(1) and patch(1) commands available on many systems.

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Properties

Versions	0.1.1.1, 0.1.1.2, 0.1.1.3, 1.0.0.0, 1.0.0.1, 1.1.0.0, 1.1.0.2, 1.1.0.2, 1.1.0.3, 1.1.0.4, 1.1.0.5, 1.1.0.7, 1.1.0.8, 1.1.0.9, 1.1.0.10, 1.1.0.11, 1.1.0.12, 1.1.0.13
Change log	CHANGELOG.md
Dependencies	aeson, aeson-diff, base (>=4.5 && <4.10), bytestring (>=0.10), edit-distance-vector, hashable, mtl, optparse-applicative, scientific, text, unordered-containers, vector [details]
License	BSD-3-Clause
Copyright	(c) 2015 Thomas Sutton and others.
Author	Thomas Sutton
Maintainer	me@thomas-sutton.id.au
Category	JSON, Web, Algorithms
Home page	https://github.com/thsutton/aeson-diff
Source repo	head: git clone https://github.com/thsutton/aeson-diff
Uploaded	by ThomasSutton at 2017-03-20T22:45:53Z

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[Index]

Data
- Aeson

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aeson-diff-1.1.0.2.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

Maintainer's Corner

Package maintainers

ThomasSutton, clintonmead, clinton, janus, velveteer

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Readme for aeson-diff-1.1.0.2

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Aeson Diff

This is a small library for working with changes to JSON documents. It includes a library and two executables in the style of diff(1) and patch(1). Patches are themselves JSON Patch documents as specified in RFC 6902.

Installing

The aeson-diff package is written in Haskell and can be installed using the Cabal package management tool, stack, or something similar.

stack install aeson-diff

The command-line tools can then be executed using stack:

stack exec json-diff -- ....
stack exec json-patch -- ....

If you prefer to use Cabal, something like this might do the trick:

cd aeson-diff/
cabal sandbox init
cabal install --dependencies-only
cabal build
sudo mkdir -p /usr/local/bin
sudo cp dist/build/json-*/json-{diff,patch} /usr/local/bin/

Usage

Patch format

aeson-diff supports the JSON Patch format described in RFC 6902.

json-diff command

The json-diff command compares two JSON documents and extracts a patch describing the differences between the first document and the second.

Usage: json-diff [-T|--test-before-remove] [-o|--output OUTPUT] FROM TO
Generate a patch between two JSON documents.

Available options:
    -h,--help                Show this help text
    -T,--test-before-remove  Include a test before each remove.
    -o,--output OUTPUT       Write patch to file OUTPUT.

json-patch command

The json-patch command applies a patch describing changes to be made to a JSON document.

Usage: json-patch [-o|--output OUTPUT] PATCH FROM
Generate a patch between two JSON documents.

Available options:
  -h,--help                Show this help text
  -o,--output OUTPUT       Destination for patched JSON.
  PATCH                    Patch to apply.
  FROM                     JSON file to patch.

aeson-diff library

The aeson-diff library exports as single module: Data.Aeson.Diff. This exports diff and patch functions which do exactly what might be expected:

diff :: Value -> Value -> Patch examines source and target JSON Values and constructs a new Patch describing the changes.
patch :: Patch -> Value -> Value applies the changes in a Patch to a JSON Value. If an error results then an exception is thrown.

For more complete information, see the documentation.