diff options
Diffstat (limited to 'guides/rails_guides/kindle.rb')
| -rw-r--r-- | guides/rails_guides/kindle.rb | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/guides/rails_guides/kindle.rb b/guides/rails_guides/kindle.rb new file mode 100644 index 0000000000..8a0361ff4c --- /dev/null +++ b/guides/rails_guides/kindle.rb @@ -0,0 +1,116 @@ +#!/usr/bin/env ruby +# frozen_string_literal: true + +require "kindlerb" +require "nokogiri" +require "fileutils" +require "yaml" +require "date" + +module Kindle + extend self + + def generate(output_dir, mobi_outfile, logfile) + output_dir = File.absolute_path(output_dir) + Dir.chdir output_dir do + puts "=> Using output dir: #{output_dir}" + puts "=> Arranging html pages in document order" + toc = File.read("toc.ncx") + doc = Nokogiri::XML(toc).xpath("//ncx:content", "ncx" => "http://www.daisy.org/z3986/2005/ncx/") + html_pages = doc.select { |c| c[:src] }.map { |c| c[:src] }.uniq + + generate_front_matter(html_pages) + + generate_sections(html_pages) + + generate_document_metadata(mobi_outfile) + + puts "Creating MOBI document with kindlegen. This may take a while." + if Kindlerb.run(output_dir) + puts "MOBI document generated at #{File.expand_path(mobi_outfile, output_dir)}" + end + end + end + + def generate_front_matter(html_pages) + frontmatter = [] + html_pages.delete_if { |x| + if /(toc|welcome|copyright).html/.match?(x) + frontmatter << x unless x =~ /toc/ + true + end + } + html = frontmatter.map { |x| + Nokogiri::HTML(File.open(x)).at("body").inner_html + }.join("\n") + + fdoc = Nokogiri::HTML(html) + fdoc.search("h3").each do |h3| + h3.name = "h4" + end + fdoc.search("h2").each do |h2| + h2.name = "h3" + h2["id"] = h2.inner_text.gsub(/\s/, "-") + end + add_head_section fdoc, "Front Matter" + File.open("frontmatter.html", "w") { |f| f.puts fdoc.to_html } + html_pages.unshift "frontmatter.html" + end + + def generate_sections(html_pages) + FileUtils.rm_rf("sections/") + html_pages.each_with_index do |page, section_idx| + FileUtils.mkdir_p("sections/%03d" % section_idx) + doc = Nokogiri::HTML(File.open(page)) + title = doc.at("title").inner_text.gsub("Ruby on Rails Guides: ", "") + title = page.capitalize.gsub(".html", "") if title.strip == "" + File.open("sections/%03d/_section.txt" % section_idx, "w") { |f| f.puts title } + doc.xpath("//h3[@id]").each_with_index do |h3, item_idx| + subsection = h3.inner_text + content = h3.xpath("./following-sibling::*").take_while { |x| x.name != "h3" }.map(&:to_html) + item = Nokogiri::HTML(h3.to_html + content.join("\n")) + item_path = "sections/%03d/%03d.html" % [section_idx, item_idx] + add_head_section(item, subsection) + item.search("img").each do |img| + img["src"] = "#{Dir.pwd}/#{img['src']}" + end + item.xpath("//li/p").each { |p| p.swap(p.children); p.remove } + File.open(item_path, "w") { |f| f.puts item.to_html } + end + end + end + + def generate_document_metadata(mobi_outfile) + puts "=> Generating _document.yml" + x = Nokogiri::XML(File.open("rails_guides.opf")).remove_namespaces! + cover_jpg = "#{Dir.pwd}/images/rails_guides_kindle_cover.jpg" + cover_gif = cover_jpg.sub(/jpg$/, "gif") + puts `convert #{cover_jpg} #{cover_gif}` + document = { + "doc_uuid" => x.at("package")["unique-identifier"], + "title" => x.at("title").inner_text.gsub(/\(.*$/, " v2"), + "publisher" => x.at("publisher").inner_text, + "author" => x.at("creator").inner_text, + "subject" => x.at("subject").inner_text, + "date" => x.at("date").inner_text, + "cover" => cover_gif, + "masthead" => nil, + "mobi_outfile" => mobi_outfile + } + puts document.to_yaml + File.open("_document.yml", "w") { |f| f.puts document.to_yaml } + end + + def add_head_section(doc, title) + head = Nokogiri::XML::Node.new "head", doc + title_node = Nokogiri::XML::Node.new "title", doc + title_node.content = title + title_node.parent = head + css = Nokogiri::XML::Node.new "link", doc + css["rel"] = "stylesheet" + css["type"] = "text/css" + css["href"] = "#{Dir.pwd}/stylesheets/kindle.css" + css.parent = head + doc.at("body").before head + end +end |