Statesman State Diagram

Extension of Statesman to get state diagrams.

Adds .to_dot method to Statesman::Machine. It can export your machine class definition to the DOT format.

Also adds a Rake task called statesman:diagram. It runs the dot program (GraphViz) to make a PNG image from the DOT representation of the machine class.

Installation

Add this line to your application's Gemfile:

group :development do
  gem 'statesman-diagram'
end

And then execute:

bundle

Or install it yourself as:

gem install statesman-diagram

Prerequisites

• GraphViz (the dot program):
  • brew install graphviz on macOS.
  • sudo apt-get install graphviz on Ubuntu / Debian.

Usage

Run:

rake statesman:diagram[My::State::Machine::Class]

Find the state diagram of this class in My_State_Machine_Class.png.

You can also specify the name of the file:

rake statesman:diagram[My::State::Machine::Class, ./temp/state]

And the state diagram of this class will be placed in ./temp/state.png.

Development

After checking out the repo, run bin/setup to install dependencies. 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.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/funbox/statesman-diagram.

License

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