class Asciidoctor::PDF::Optimizer

Constants

QUALITY_NAMES

Attributes

compatibility_level[R]
compliance[R]
quality[R]

Public Class Methods

new(quality = 'default', compatibility_level = '1.4', compliance = 'PDF') click to toggle source
# File lib/asciidoctor/pdf/optimizer.rb, line 49
def initialize quality = 'default', compatibility_level = '1.4', compliance = 'PDF'
  @quality = QUALITY_NAMES[quality]
  @compatibility_level = compatibility_level
  @compliance = compliance
  if (gs_path = ::ENV['GS'])
    ::RGhost::Config::GS[:path] = gs_path
  end
end

Public Instance Methods

optimize_file(target) click to toggle source
# File lib/asciidoctor/pdf/optimizer.rb, line 58
def optimize_file target
  ::Dir::Tmpname.create ['asciidoctor-pdf-', '.pdf'] do |tmpfile|
    filename_o = ::Pathname.new target
    filename_tmp = ::Pathname.new tmpfile
    if (pdfmark = filename_o.sub_ext '.pdfmark').file?
      inputs = [target, pdfmark.to_s].join ::File::PATH_SEPARATOR
    else
      inputs = target
    end
    d = { CannotEmbedFontPolicy: '/Warning', CompatibilityLevel: @compatibility_level, NEWPDF: false, Printed: false }
    case @compliance
    when 'PDF/A', 'PDF/A-1', 'PDF/A-2', 'PDF/A-3'
      d[:PDFA] = ((@compliance.split '-', 2)[1] || 1).to_i
      d[:ShowAnnots] = false
    when 'PDF/X', 'PDF/X-1', 'PDF/X-3'
      d[:PDFX] = true
      d[:ShowAnnots] = false
    end
    (::RGhost::Convert.new inputs).to :pdf, filename: filename_tmp.to_s, quality: @quality, d: d
    filename_o.binwrite filename_tmp.binread
  end
  nil
end