Simple script to save your entire Pocket list (unread + archived) in PDF form.

pocket_export.rb

=begin
	Pocket Export.rb
	My first 'real' Ruby script (hello world)!
	More info here: http://blog.ctis.me/2015/12/archiving-your-pocket-articles-with-ruby.html
	
	DEPENDENCIES:
	  pocket_export requires the following gems:
		curb
		nokogiri
	
	  pocket_export requires the following packages (install them with your system's package manager): 
		wkhtmltopdf - wkhtmltopdf.org

	USAGE:
                **make sure that dependencies are installed first**

		Go to https://getpocket.com/export/, and download the HTML file with your pocket data. Then, run this script with 
	  the full path to the HTML file supplied as an argument (e.g. ~/Downloads/ril_export.html). The script will begin downloading
	  items immediately, and will save download files in ./pocket_export_data. Errors, if encountered, are logged in pocket_export_errors.log

	NOTE:
		This process can potentially be fairly CPU-intensive, as all pages are downloaded and rendered as PDFs. If you have many items in your list, the process is 
	  going to take a while.
=end

require 'curb'
require 'open-uri'
require 'nokogiri'

if ARGV.length < 1
	abort("pocket_export.rb /path/to/ril_export.html")
else
	pocket_data = ARGV[0]
	Dir.mkdir("./pocket_export_data/") unless File.exists?("./pocket_export_data/")
end

Nokogiri::HTML(open(pocket_data)).css('a').each { |link|
 begin
	# Set link to value of href attribute of <a> tag.
	link = link['href']

	# Follow any redirects until final destination is found (url shorteners etc).
	curl = Curl::Easy.perform(link.gsub("\n",'')) do |curl|
	  curl.head = true
	  curl.follow_location = true
	end

	# Fetch the webpage title for use in the filename.
	title = Nokogiri::HTML(open(curl.last_effective_url)).at('title').text.gsub("'", "").gsub('"','')
	puts "\n\n\n***Downloading #{title} (#{link})..."

	# Run wkhtmltopdf
	system("wkhtmltopdf '#{link}' ./pocket_export_data/'#{title}.pdf'") 
  rescue
	# Catch and log any exceptions.
	puts "\n\n\n!!!Downloading #{link} FAILED!!\n\n\n"
        File.open('./pocket_export_data/pocket_export_errors.log', 'a') { |errorlog|
          errorlog.write("Error: " << a << "\n")
        }
  end
}