Class: Softcover::Builders::Pdf

Inherits:
Softcover::Builder show all
Includes:
Output, Utils
Defined in:
lib/softcover/builders/pdf.rb

Constant Summary

Constants included from Utils

Utils::UNITS

Instance Attribute Summary

Attributes inherited from Softcover::Builder

#built_files, #manifest

Instance Method Summary collapse

Methods included from Utils

#add_highlight_class!, #article?, #as_size, #book_file_lines, #chapter_label, #commands, #current_book, #dependency_filename, #digest, #executable, #execute, #filename_or_default, #first_path, #get_filename, #html_extension, #in_book_directory?, #language_labels, #linux?, #logged_in?, #master_content, #master_filename, #master_latex_header, #mkdir, #non_comment_lines, #os_x?, #path, #polytexnic_html, #raw_lines, #reset_current_book!, #rm, #rm_r, #silence, #silence_stream, #source, #template_dir, #tmpify, #unpublish_slug, #write_master_latex_file, #write_pygments_file

Methods included from Output

should_output?, silence!, silent?, #system, unsilence!

Methods inherited from Softcover::Builder

#clean!, #initialize

Constructor Details

This class inherits a constructor from Softcover::Builder

Instance Method Details

#build!(options = {}) ⇒ Object 



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# File 'lib/softcover/builders/pdf.rb', line 7

def build!(options={})
  make_png_from_gif
  if manifest.markdown?
    # Build the HTML to produce PolyTeX as a side-effect,
    # then update the manifest to reduce PDF generation
    # to a previously solved problem.
    Softcover::Builders::Html.new.build!
    opts = options.merge({ source: :polytex, origin: :markdown})
    self.manifest = Softcover::BookManifest.new(opts)
  end

  write_master_latex_file(manifest)

  # Build the PolyTeX filename so it accepts both 'foo' and 'foo.tex'.
  basename = File.basename(manifest.filename, '.tex')
  book_filename = basename + '.tex'

  # In debug mode, execute `xelatex` and exit.
  if options[:debug]
    execute "#{xelatex} #{book_filename}"
    return    # only gets called in test env
  end

  polytex_filenames = manifest.pdf_chapter_filenames << book_filename
  polytex_filenames.each do |filename|
    polytex = File.read(filename)
    latex   = Polytexnic::Pipeline.new(polytex,
                                       language_labels: language_labels).
                                      to_latex
    if filename == book_filename
      latex.gsub!(/\\include{(.*?)}/) do
        "\\include{#{Softcover::Utils.tmpify(manifest, $1)}.tmp}"
      end
    end
    File.write(Softcover::Utils.tmpify(manifest, filename), latex)
  end
  write_pygments_file(:latex, Softcover::Directories::STYLES)
  copy_polytexnic_sty(options)

  # Renaming the PDF in the command is necessary because `execute`
  # below uses `exec` (except in tests, where it breaks). Since `exec`
  # causes the Ruby process to end, any Ruby code after `exec`
  # is ignored.
  # (The reason for using `exec` is so that LaTeX errors get emitted to
  # the screen rather than just hanging the process.)
  cmd = "#{pdf_cmd(book_filename, options)} " +
        "; #{rename_pdf(basename, options)}"
  # Here we use `system` when making a preview because the preview command
  # needs to run after the main PDF build.
  if options[:quiet] || options[:silent]
    silence_stream(STDERR) do
      silence { options[:preview] ? system(cmd) : execute(cmd) }
    end
  elsif options[:'find-overfull']
    silence_stream(STDERR) { execute(cmd) }
  else
    options[:preview] ? system(cmd) : execute(cmd)
  end
end