Class: Libis::Format::Tool::PdfOptimizer

Inherits:
Object
  • Object
show all
Includes:
Tools::Logger
Defined in:
lib/libis/format/tool/pdf_optimizer.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.installed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/libis/format/tool/pdf_optimizer.rb', line 16

def self.installed?
  result = Libis::Tools::Command.run(Libis::Format::Config[:ghostscript_cmd], "--version")
  result[:status] == 0
end

.run(source, target, quality) ⇒ Object 



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# File 'lib/libis/format/tool/pdf_optimizer.rb', line 21

def self.run(source, target, quality)
  self.new.run source, target, quality
end

Instance Method Details

#run(source, target, quality) ⇒ Object

Raises:

  • (RuntimeError) 


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# File 'lib/libis/format/tool/pdf_optimizer.rb', line 25

def run(source, target, quality)

  timeout = Libis::Format::Config[:timeouts][:pdf_optimizer]
  result = Libis::Tools::Command.run(
      Libis::Format::Config[:ghostscript_cmd],
      '-sDEVICE=pdfwrite',
      '-dCompatibilityLevel=1.4',
      "-dPDFSETTINGS=/#{quality}",
      '-dNOPAUSE',
      '-dBATCH',
      "-sOutputFile=#{target}",
      "#{source}",
      timeout: timeout,
      kill_after: timeout * 2
  )

  raise RuntimeError, "#{self.class} took too long (> #{timeout} seconds) to complete" if result[:timeout]
  raise RuntimeError, "#{self.class} errors: #{result[:err].join("\n")}" unless result[:status] == 0

  {
    command: result,
    files: [ target ]
  }

end