parse_emoji_slack.rb

require 'nokogiri'
require 'pry'
require 'open-uri'

class Parse
  def loadFile
    puts "start.."
    file = File.read("raw_html5")
    result = Nokogiri::XML(file)
    rootNode = result.children
    image_elements = []
    rootNode.children.each do |x|
      if x.is_a?(Nokogiri::XML::Element)
        image_elements.push x
      end
    end
    image_elements.shift
    final_elements = []

    image_elements.each {|x|
      begin
        if x.children.first(2).last.attributes.first.last.value == "custom_emoji_image"
          final_elements.push x.children.first(2).last
        end
      rescue
      end
    }

    yay_array = final_elements.collect {|x| x.children.first.attributes["data-original"].value}

    yay_array1 = []
    yay_array.each {|x|
      extension = x.split("/").last.split(".").last
      only_filename = x.split("/").last(2).first
      yay_array1.push({:filename => "#{only_filename}.#{extension}", :url => x})
    }
    yay_array1
  end
end

array = Parse.new.loadFile

array.each {|x|
  begin
    File.open("emojis/#{x[:filename]}", 'w') {|file|
      file.write(open(x[:url]).read)
    }
  rescue
  end
}