image_scrape.rb

def download_image(u)
	path = 'images/%s' % u.split('/')[-1]
	url = URI.parse(u)
	found = false 
	until found 
		host, port = url.host, url.port if url.host && url.port 
		query = url.query ? url.query : ""
		req = Net::HTTP::Get.new(url.path + '?' + query)
		res = Net::HTTP.start(host, port) {|http|  http.request(req) } 
		res.header['location'] ? url = URI.parse(res.header['location']) : found = true 
	end 
	open(path, "wb") do |file|
		file.write(res.body)
	end
	path
end