warmbreeze · December 23, 2020 08:33
diff --git a/books.md b/books.md
diff --git a/script.rb b/script.rb
 # This script generates links for downloading free books from O'Reilly site (http://www.oreilly.com/programming/free)
 # Requirements
 # ruby
 # httparty, nokogiri (gem install httparty nokogiri --no-ri --no-rdoc)
 # Execute
 # ruby script.rb > books.md

 require 'httparty'
 require 'nokogiri'
 require 'uri'

 URL    = 'http://www.oreilly.com/'
 THEMES = ['programming', 'iot', 'data', 'webops', 'web-platform', 'security', 'business']
 FORMATS = ['pdf', 'epub', 'mobi']

 def theme_url(theme)
  URL + theme + '/' + 'free/'
 end

 def download_url(book, fmt)
  theme_url(book[:theme]) + 'files/' + book[:file_name] + '.' + fmt 
 end

 def get_book_info(link)
  splitted_url = URI(link.attributes['href'].value).path.split('/')
  {
    theme:     splitted_url[1],
    title:     link.attributes['title'].value,
    file_name: splitted_url.last.split('.').first
  }
 end

 def books(theme_url)
  Nokogiri.HTML(HTTParty.get(theme_url).body)
    .css("section .product-row a")
    .map { |link| get_book_info(link) }
 end

 def main
  THEMES.each do |t|
    puts "# From theme: #{t.capitalize}"
    books(theme_url(t)).each do |book|
      puts "### #{book[:title]}"
      FORMATS.each { |fmt| puts "[#{fmt}](#{download_url(book, fmt)}) " }
    end
  end  
 end

 main
	# This script generates links for downloading free books from O'Reilly site (http://www.oreilly.com/programming/free)
	# Requirements
	# ruby
	# httparty, nokogiri (gem install httparty nokogiri --no-ri --no-rdoc)
	# Execute
	# ruby script.rb > books.md

	require 'httparty'
	require 'nokogiri'
	require 'uri'

	URL = 'http://www.oreilly.com/'
	THEMES = ['programming', 'iot', 'data', 'webops', 'web-platform', 'security', 'business']
	FORMATS = ['pdf', 'epub', 'mobi']

	def theme_url(theme)
	URL + theme + '/' + 'free/'
	end

	def download_url(book, fmt)
	theme_url(book[:theme]) + 'files/' + book[:file_name] + '.' + fmt
	end

	def get_book_info(link)
	splitted_url = URI(link.attributes['href'].value).path.split('/')
	{
	theme: splitted_url[1],
	title: link.attributes['title'].value,
	file_name: splitted_url.last.split('.').first
	}
	end

	def books(theme_url)
	Nokogiri.HTML(HTTParty.get(theme_url).body)
	.css("section .product-row a")
	.map { \|link\| get_book_info(link) }
	end

	def main
	THEMES.each do \|t\|
	puts "# From theme: #{t.capitalize}"
	books(theme_url(t)).each do \|book\|
	puts "### #{book[:title]}"
	FORMATS.each { \|fmt\| puts "[#{fmt}](#{download_url(book, fmt)}) " }
	end
	end
	end

	main
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