Class: Verku::Exporter::Epub
- Inherits:
-
Base
- Object
- Base
- Verku::Exporter::Epub
show all
- Defined in:
- lib/verku/exporter/epub.rb
Constant Summary
Constants inherited
from Base
Base::EXTENSIONS
Instance Attribute Summary
Attributes inherited from Base
#root_dir, #source
Instance Method Summary
collapse
Methods inherited from Base
#base_name, #build_data, #config, #epub_file, export!, #git_branch, #handle_error, #html_file, #initialize, #name, #output_name, #read_content, #render_template, #source_list, #spawn_command, #tex_file, #ui
Instance Method Details
#assets ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 136
def assets
@assets ||= begin
assets = Dir[root_dir.join("_templates/epub/*.css")]
assets += Dir[root_dir.join("images/**/*.{jpg,png,gif}")]
assets
end
end
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#back_page ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 46
def back_page
return Dir[back_path] if File.exist?(back_path)
[]
end
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#back_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 166
def back_path
tmp_dir.join("back.html")
end
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#copyright_page ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 53
def copyright_page
Dir[copyright_path]
end
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#copyright_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 169
def copyright_path
tmp_dir.join("copyright.html")
end
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#cover_image ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 143
def cover_image
path = Dir[root_dir.join("images/cover-#{name}.{jpg,png,gif}").to_s.downcase].first
return File.basename(path) if path && File.exist?(path)
end
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#cover_page ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 50
def cover_page
Dir[cover_path]
end
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#cover_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 160
def cover_path
tmp_dir.join("cover.html")
end
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#epub ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 15
def epub; @epub ||= EeePub.make ;end
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#export! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 17
def export!
puts "-- Exporting EPUB"
epub.title config["title"]
epub.language config["language"]
epub.creator config["authors"].to_sentence
epub.publisher config["publisher"]
epub.date config["published_at"]
epub.uid config["uid"]
epub.identifier config["identifier"]["id"], :scheme => config["identifier"]["type"]
if cover_image.nil?
puts " - Consider adding a cover images in /images."
else
epub.cover cover_image
end
write_coverpage!
write_thankspage!
write_copyright!
write_sections!
write_backpage!
write_toc!
epub.files cover_page + thanks_page + sections.map(&:filepath) + back_page + copyright_page + assets
epub.nav navigation
epub.save(epub_file)
true
rescue Exception
p $!, $@
false
end
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#html ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 16
def html; @html ||= Nokogiri::HTML(html_file.read); end
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#navigation ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 147
def navigation
sections.map do |section| {
:label => section.html.css("h2:first-of-type").text,
:content => section.filename
}
end
end
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#render_chapter(content) ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 132
def render_chapter(content)
locals = config.merge(:content => content)
render_template(template_path, locals)
end
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#sections ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 5
def sections
@sections ||= html.css("div.section").each_with_index.map do |section, index|
OpenStruct.new({
:index => index,
:filename => "section_#{index}.html",
:filepath => tmp_dir.join("section_#{index}.html").to_s,
:html => Nokogiri::HTML(section.inner_html)
})
end
end
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#template_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 154
def template_path
root_dir.join("_templates/epub/page.erb")
end
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#thanks_page ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 56
def thanks_page
Dir[thanks_path]
end
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#thanks_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 163
def thanks_path
tmp_dir.join("thanks.html")
end
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#tmp_dir ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 157
def tmp_dir
root_dir.join("builds/tmp")
end
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#toc_path ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 172
def toc_path
tmp_dir.join("toc.html")
end
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#write_backpage! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 59
def write_backpage!
contents = render_template(root_dir.join("_templates/epub/back.html"), config)
File.open(back_path,"w") do |file|
file << contents
end
end
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#write_copyright! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 73
def write_copyright!
contents = render_template(root_dir.join("_templates/html/copyright.erb"), config)
FileUtils.mkdir_p(File.dirname(copyright_path))
File.open(copyright_path,"w") do |file|
file << contents
end
end
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#write_coverpage! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 65
def write_coverpage!
contents = render_template(root_dir.join("_templates/epub/cover.html"), config)
puts "Writing cover page. #{cover_path}"
FileUtils.mkdir_p(File.dirname(cover_path))
File.open(cover_path,"w") do |file|
file << contents
end
end
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#write_sections! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 95
def write_sections!
links = sections.inject({}) do |buffer, section|
section.html.css("[id]").each do |element|
anchor = "##{element["id"]}"
buffer[anchor] = "#{section.filename}#{anchor}"
end
buffer
end
sections.each do |section|
section.html.css("a[href^='#']").each do |link|
href = link["href"]
link.set_attribute("href", links.fetch(href, href))
end
section.html.css("[src]").each do |element|
src = File.basename(element["src"]).gsub(/\.svg$/, ".png")
element.set_attribute("src", src)
element.set_attribute("alt", "")
element.node_name = "img"
end
FileUtils.mkdir_p(tmp_dir)
File.open(section.filepath, "w") do |file|
body = section.html.css("body").to_xhtml.gsub(%r[<body>(.*?)</body>]m, "\\1")
file << render_chapter(body)
end
end
end
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#write_thankspage! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 80
def write_thankspage!
contents = render_template(root_dir.join("_templates/html/thanks.erb"), config)
FileUtils.mkdir_p(File.dirname(thanks_path))
File.open(thanks_path,"w") do |file|
file << contents
end
end
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#write_toc! ⇒ Object
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# File 'lib/verku/exporter/epub.rb', line 87
def write_toc!
toc = TOC::Epub.new(navigation)
FileUtils.mkdir_p(File.dirname(toc_path))
File.open(toc_path, "w") do |file|
file << toc.to_html
end
end
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