Thor - Building CLI with ruby

Transcript

1. Building command-line interface (CLI) with ruby

2. I have learnt ruby the rails way. http://www.frankwatching.com/wordpress/wp-content/uploads/2007/11/rails.jpg

3. Then... tryruby.org rubykoans.com rubeque.com more and more ruby

4. A rails app is a ruby app. A ruby app

   may NOT be a rails app.

5. Today Ruby on CLI

6. What for? Utility => curl Code Genertor => Rails generator

   Automation => db migration

7. Hello world puts "Hello world"

8. My ideal CLI mycli <command> [options]

9. I need to parse the command and options in mycli

   manually. ARGV or
10. None

11. Multiple commands desc "hi", "Say hi" def hi puts "hi

    !" end desc "bye", "Say goodbye" def bye puts "bye !" end

12. Passing argument desc "hello NAME", "Say hello to <NAME>" def

    hello(name) puts "hello #{name}!" end

13. Parsing options desc "hello NAME", "Say hello to <NAME>" method_options

    loudly: false def hello(name) name.upcase! if options[:loudly] puts "hello #{name}!" end

14. Documentation ready

15. Thanks @lchanmann

16. References http://whatisthor.com/ http://yehudakatz.com/2009/01/13/some-thor-news/ http://rubylearning.com/blog/2011/01/03/how-do-i-make-a-command-line-tool-in-ruby/ http://www.bounga.org/ruby/2011/09/12/thor-a-command-line-scripting-tool/ Demo: https://gist.github.com/3688473 Checkout thor on

    Github https://github.com/wycats/thor http://whatisthor.com/images/thor.png