Ruby Image Downloader Example

if Gem.win_platform?
  module Process
    RLIMIT_NOFILE = 7
    def self.getrlimit(*args)
      [1024]
    end
  end
end

require 'mechanize'

$agent = Mechanize.new

SaveFolder = "downloads"
Dir.mkdir SaveFolder unless File.exist? SaveFolder

def save_image(link, filename)
  path = "#{SaveFolder}/#{filename}"
  puts "Saving #{link} to #{path}"
  $agent.get(link).save(path)
end

doc = $agent.get 'https://www.deviantart.com/'
doc.links.each do |link|
  link = link.uri.to_s
  next if link[-1] == 's'
  next unless link.include?("/art/")
  puts link
  image_page = $agent.get(link)
  title = image_page.search("._2p6cd").first.inner_text rescue nil
  if title.nil?
    puts "No title found in #{link}, skipping"
    next
  end
  title.tr!(":\\\/?!*", '')
  img_link = image_page.search("._1izoQ").first.get_attribute("src")
  save_image(img_link, "#{title}.png")
end