diff options
| -rw-r--r-- | guides/Rakefile | 6 | ||||
| -rw-r--r-- | guides/rails_guides/generator.rb | 6 | ||||
| -rw-r--r-- | guides/rails_guides/kindle.rb | 119 | ||||
| -rw-r--r-- | guides/source/kindle/rails_guides.opf.erb | 2 |
4 files changed, 128 insertions, 5 deletions
diff --git a/guides/Rakefile b/guides/Rakefile index 7881a3d9b3..d6dd950d01 100644 --- a/guides/Rakefile +++ b/guides/Rakefile @@ -13,6 +13,12 @@ namespace :guides do desc "Generate .mobi file. The kindlegen executable must be in your PATH. You can get it for free from http://www.amazon.com/kindlepublishing" task :kindle do + unless `kindlerb -v 2> /dev/null` =~ /kindlerb 0.1.1/ + abort "Please `gem install kindlerb`" + end + unless `convert` =~ /convert/ + abort "Please install ImageMagick`" + end ENV['KINDLE'] = '1' Rake::Task['guides:generate:html'].invoke end diff --git a/guides/rails_guides/generator.rb b/guides/rails_guides/generator.rb index a53d34a279..af9c5b8372 100644 --- a/guides/rails_guides/generator.rb +++ b/guides/rails_guides/generator.rb @@ -112,11 +112,9 @@ module RailsGuides end def generate_mobi - opf = "#{output_dir}/rails_guides.opf" + require 'rails_guides/kindle' out = "#{output_dir}/kindlegen.out" - - system "kindlegen #{opf} -o #{mobi} > #{out} 2>&1" - puts "Guides compiled as Kindle book to #{mobi}" + Kindle.generate(output_dir, mobi, out) puts "(kindlegen log at #{out})." end diff --git a/guides/rails_guides/kindle.rb b/guides/rails_guides/kindle.rb new file mode 100644 index 0000000000..09eecd5634 --- /dev/null +++ b/guides/rails_guides/kindle.rb @@ -0,0 +1,119 @@ +#!/usr/bin/env ruby + +unless `which kindlerb` + abort "Please gem install kindlerb" +end + +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 make take a while." + cmd = "kindlerb . > #{File.absolute_path logfile} 2>&1" + puts cmd + system(cmd) + puts "MOBI document generated at #{File.expand_path(mobi_outfile, output_dir)}" + end + end + + def generate_front_matter(html_pages) + frontmatter = [] + html_pages.delete_if {|x| + if x =~ /(toc|welcome|credits|copyright).html/ + 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 {|x| x.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 diff --git a/guides/source/kindle/rails_guides.opf.erb b/guides/source/kindle/rails_guides.opf.erb index 4e07664fd0..547abcbc19 100644 --- a/guides/source/kindle/rails_guides.opf.erb +++ b/guides/source/kindle/rails_guides.opf.erb @@ -32,7 +32,7 @@ <item id="toc" media-type="application/x-dtbncx+xml" href="toc.ncx" /> - <item id="cover" media-type="image/jpeg" href="images/rails_guides_kindle_cover.jpg"/> + <item id="cover" media-type="image/jpg" href="images/rails_guides_kindle_cover.jpg"/> </manifest> <spine toc="toc"> |