cwl-stat.rb

require 'yaml'
require 'json'
require 'pp'

module CWL
  class Workflow
    def initialize(fpath)
      @workflow = YAML.load(open(fpath))
    end

    def stats_json
      JSON.dump(stats)
    end

    def stats
      {
        total_number_of_steps: number_of_steps,
        total_number_of_inputs: total_number_of_inputs,
        number_of_inputs_per_step: number_of_inputs_per_step,
      }
    end

    def steps
      @workflow['steps']
    end

    def number_of_steps
      steps.keys.size
    end

    def total_number_of_inputs
      number_of_inputs_per_step.each_value.sum
    end

    def number_of_inputs_per_step
      Hash[steps.each_pair.map{|k,v| [k.intern, v['in'].keys.size] }]
    end
  end
end

if __FILE__ == $0
  if ARGV[1] == "--json"
    puts CWL::Workflow.new(ARGV.first).stats_json
  else
    pp CWL::Workflow.new(ARGV.first).stats
  end
end