Class: Ebookie::Rendering::Epub

Inherits:
Base
  • Object
show all
Defined in:
lib/ebookie/rendering/epub.rb

Constant Summary

Constants inherited from Base

Base::IMAGE_SRC_REGEX

Instance Attribute Summary

Attributes inherited from Base

#document

Instance Method Summary collapse

Methods inherited from Base

#clean_images, #format, format, inherited, #initialize, #output_path, #render, #render_erb_to_file, #sanitize_html, set, #template_dir, #template_file, #tmp_dir

Constructor Details

This class inherits a constructor from Ebookie::Rendering::Base

Instance Method Details

#copy_cover ⇒ Object 



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# File 'lib/ebookie/rendering/epub.rb', line 12

def copy_cover
  if File.extname(document.cover) != '.png'
    raise "Cover file is not a valid png"
  end

  borrow document.cover.to_s, to: tmp_dir.join("OEBPS/images/cover.png")
end

#process! ⇒ Object 



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# File 'lib/ebookie/rendering/epub.rb', line 20

def process!
  copy_cover if document.cover

  document.chapters.each do |chapter|
    render_erb_to_file template_file("OEBPS/chapter.erb"), tmp_dir.join("OEBPS/#{chapter.slug}.html"), chapter: chapter
  end

  unless Ebookie.logger.debug?
    Epzip.class_variable_set("@@zip_cmd_path", "zip -q")
  end

  zip = Epzip.zip( tmp_dir, output_path )

  validation = EpubValidator.check( output_path )
  if validation.valid?
    Ebookie.logger.info "Successfully compiled #{document.title} to epub"
  else
    Ebookie.logger.warn "Errors when compiling #{document.title} to epub"
    validation.messages.each do |m|
      Ebookie.logger.warn "~> #{m}"
    end
  end
end

#sanitize(html) ⇒ Object 



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# File 'lib/ebookie/rendering/epub.rb', line 44

def sanitize(html)
  html = html.dup
  {
    "<figure>"      => "<span class=\"figure\">",
    "</figure>"     => "</span>",
    "<figcaption>"  => "<span class=\"figcaption\">",
    "</figcaption>" => "</span>"
  }.each do |k,v|
    html.gsub! k, v
  end

  sanitize_html clean_images(html, Pathname.new("images"))
end