ニコニコの動画をアレするやつ。要niconico gem

nico_dl.rb

#!/usr/bin/ruby

require 'uri'

def usage
    puts "\nUsage: nico_dl video_url"
end

if ARGV[0] !~ URI.regexp then
    puts "ARGV[0] is not URI"
    usage
elsif ARGV[0].split("/")[2] != "www.nicovideo.jp" then
    puts "URI is not www.nicovideo.jp"
    usage
else
    require 'niconico'

    require '~/.config/nicologin'
    video_id = ARGV[0].split("/")[-1]
    nico = Niconico.new(MAIL, PASS)
    nico.login

    title = nico.video(video_id).get.at('title').inner_text.gsub(/\/| - ニコニコ動画/, "\/" => "／", " - ニコニコ動画" => "")
    puts "download \"#{title}\""

    video = nico.video(video_id).get_video
    File.binwrite("#{Dir::pwd}/#{title}.mp4", video)
end

nicologin.rb

# ~/.config/に置く
MAIL = "YOUR ADRESS"
PASS = "YOUR PASSWORD"