Class: Pludoni::Pdfutils::ConvertImageToPdf

Inherits:
Object
  • Object
show all
Defined in:
lib/pludoni/pdfutils/convert_image_to_pdf.rb

Instance Method Summary collapse

Constructor Details

#initialize(blob) ⇒ ConvertImageToPdf

Returns a new instance of ConvertImageToPdf.



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# File 'lib/pludoni/pdfutils/convert_image_to_pdf.rb', line 5

def initialize(blob)
  @blob = FileWrapper.make(blob)
end

Instance Method Details

#run(&block) ⇒ Object 



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# File 'lib/pludoni/pdfutils/convert_image_to_pdf.rb', line 9

def run(&block)
  fname = File.basename(@blob.filename.to_s, '.*')
  @blob.open do |source|
    # convert image to pdf
    tf = Tempfile.new([fname, '.pdf'])
    tf.binmode
    cli = "gs -dNOSAFER -dPDFSETTINGS=/prepress -sDEVICE=pdfwrite -o #{tf.path} viewjpeg.ps -c \\(#{source.path}\\) viewJPEG"

    stdout, stderr, status = Open3.capture3(cli)
    unless status.success?
      raise ConversionFailedError, "PDF convertion failed: Command: #{cli}\nStdout: #{stdout}\nStderr: #{stderr}"
    end

    FileWrapper.make(tf, filename: "#{fname}.pdf")
  end
end