Class: Asciidoctor::PDF::Optimizer

Inherits:
Object
  • Object
show all
Defined in:
lib/asciidoctor/pdf/optimizer.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(quality = 'default', compatibility_level = '1.4', compliance = 'PDF') ⇒ Optimizer

Returns a new instance of Optimizer.



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# File 'lib/asciidoctor/pdf/optimizer.rb', line 52

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

Instance Attribute Details

#compatibility_level ⇒ Object (readonly)

Returns the value of attribute compatibility_level.



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# File 'lib/asciidoctor/pdf/optimizer.rb', line 49

def compatibility_level
  @compatibility_level
end

#compliance ⇒ Object (readonly)

Returns the value of attribute compliance.



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# File 'lib/asciidoctor/pdf/optimizer.rb', line 50

def compliance
  @compliance
end

#quality ⇒ Object (readonly)

Returns the value of attribute quality.



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# File 'lib/asciidoctor/pdf/optimizer.rb', line 48

def quality
  @quality
end

Instance Method Details

#optimize_file(target) ⇒ Object 



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# File 'lib/asciidoctor/pdf/optimizer.rb', line 61

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