guard-jekyll

Guardfile

require 'jekyll'

module ::Guard
  class Jekyll < Guard
    def start
      puts "Starting Jekyll on port #{port}"
      options = ::Jekyll.configuration({:serving => true, :watch => true, :port => port})
      p = ::Process.fork do
        ::Jekyll::Commands::Build.process(options)
        ::Jekyll::Commands::Serve.process(options)
      end
      save_pid(p)
      ::Proccess.detach(p)
      puts "Jekyll is running with pid #{p}"
    end

    def stop
      if pid
        puts "Sending INT signal to Jekyll (#{pid})"
        ::Process.kill("INT", pid)
        true
      end
    end

    def reload
      stop
      start
    end

    def run_all
      true
    end

    def run_on_change(paths)
      true
    end

    private
    
    def save_pid(p)
      File.open(pidfile_path, 'w') { |f| f.write(p) }
    end

    def pidfile_path
      options.fetch(:pidfile) {
        File.expand_path('tmp/jekyll.pid', File.dirname(__FILE__))
      }
    end

    def pid
      File.exist?(pidfile_path) && File.read(pidfile_path).to_i
    end
    
    def port
      options.fetch(:port) { 4000 }
    end
  end
end

# Available options: :pidfile, :port
guard 'jekyll'