Hackage :: [Package]

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

[ algorithms, bsd3, json, library, program, web ] [ Propose Tags ]

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.

[Skip to Readme]

Modules

[Last Documentation]

  • Data
    • Aeson
      • Data.Aeson.Diff
      • Data.Aeson.Patch
      • Data.Aeson.Pointer

Downloads

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.

Maintainer's Corner

Package maintainers

For package maintainers and hackage trustees

Candidates

Versions [RSS] 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, 1.1.0.3, 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 (<2), aeson-diff, base (>=4.9 && <4.16), bytestring (>=0.10), edit-distance-vector, hashable, mtl, optparse-applicative, scientific, semigroups (<0.19), 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
Revised Revision 1 made by janus at 2022-02-24T21:00:15Z
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 2022-02-22T11:09:59Z
Distributions Arch:1.1.0.13, Debian:1.1.0.9, LTSHaskell:1.1.0.13, NixOS:1.1.0.13, Stackage:1.1.0.13
Reverse Dependencies 5 direct, 3 indirect [details]
Executables json-patch, json-diff
Downloads 13429 total (61 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by Bayesian average]
Your Rating
  • λ
  • λ
  • λ
Status Docs not available [build log]
All reported builds failed as of 2022-02-22 [all 2 reports]

Readme for aeson-diff-1.1.0.10

[back to package description]

Aeson Diff

Build Status Hackage Hackage-Deps

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 -> Result 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.