SafePrettyJson

SafePrettyJson is a fast and safe alternative to JSON.pretty_generate(JSON.parse(input)).

Safe means that the meaning of JSON is not modified (floating point reporesentation and key order)

• 20x Fast compared to JSON.pretty_generate(JSON.parse(input))
• Key order is not modifed
• Floating point representation is not modifed '{ "a": 1.11111111111111111111111111111111111111111 }'

Add this line to your application's Gemfile:

gem 'safe_pretty_json'

And then execute:

$ bundle

Or install it yourself as:

$ gem install safe_pretty_json

require 'safe_pretty_json'
SafePrettyJson.prettify('{ "a": 1 }')
# "{\n  \"a\": 1\n}"

SafePrettyJson.prettify doesn't validate if the input string is valid json. If the input is invalid, prettify returns a string whose contents are undefined.

Add following to application.rb. This enables response body json prettification only when content-type is application/json.

config.middleware.use SafePrettyJson::RackMiddleware

ruby bench/bench.rb

• simple: JSON.pretty_generate(JSON.parse(input))
• safe_pretty_json: this gem

                 user     system      total        real
simple       9.840000   0.004000   9.844000 (  9.844245)
safe_pretty_json  0.484000   0.000000   0.484000 (  0.485056)

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/[USERNAME]/safe_pretty_json. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the SafePrettyJson project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.