imgur album downloader

imgur.rb

require 'nokogiri'
require 'open-uri'

url = ARGV[0] || gets
out = ARGV[1] || url.split('/')[-1]

puts "Retrieving album page..."
url = "http://imgur.com/a/#{url}" unless url =~ /^http/
doc = Nokogiri::HTML(open(url).read)

(imgs = doc.css(".view a")).each_with_index do |u, i|
  puts "Retrieving images... (#{i + 1}/#{imgs.size})"
  
  extension = u["href"].split('.')[-1]
  filename = "#{out}-#{i + 1}.#{extension}"
  img = open(u["href"], "rb").read
  
  open(filename, "wb").write(img)
end