rubyの練習ゥ...

renge.rb

#!/usr/bin/env ruby
#
#   Print Renge Miyauchi quotes
#
#   Author: Masaya Tk. (@844196)
#   License: MIT
    Version = 1.0


require 'optparse'

options = {}
OptionParser.new do |opt|
  opt.on('-l', '--list', 'Print all quotes list and exit.') {|v| options[:l] = v }
  opt.on('-f', '--file PATH', 'Specifiles the dictionary.') {|v| options[:f] = v }
  opt.on('-n', '--number INT', 'Specify quote number.') {|v| options[:n] = v } # TODO: options[:n].to_iしたらいいんじゃね？

  begin
    opt.parse!(ARGV)
  rescue
    STDERR.puts "#{$0}: invalid option"
    exit 1
  end
end

class Character
  attr_reader :quotes

  # TODO: pathが存在しない、読み込み不可の場合の例外処理
  def initialize(path)
    @quotes = File.open(path).readlines
  end

  # TODO: 不正なquote_numberを渡された場合の例外処理
  def say(quote_number)
    puts @quotes[quote_number]
  end

  def list
    @quotes.each_index {|i| puts "#{i} #{@quotes[i]}" }
  end
end

renge = Character.new(options[:f] || '/usr/local/share/renge/renge-quotes')

if options[:l]
  renge.list
  exit
end

if options[:n].nil?
  renge.say(rand(renge.quotes.length))
else
  renge.say(options[:n].to_i)
end