Class: Libis::Format::Tool::PdfToPdfa

Inherits:
Object
  • Object
show all
Includes:
Tools::Logger
Defined in:
lib/libis/format/tool/pdf_to_pdfa.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_to_pdfa.rb', line 19

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

.run(source, target = nil, options = {}) ⇒ Object 



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# File 'lib/libis/format/tool/pdf_to_pdfa.rb', line 24

def self.run(source, target = nil, options = {})
  new.run source, target, options
end

Instance Method Details

#run(source, target = nil, options = nil) ⇒ Object 



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# File 'lib/libis/format/tool/pdf_to_pdfa.rb', line 28

def run(source, target = nil, options = nil)
  tmp_target = Tools::TempFile.name(File.basename(source, ".*"), ".pdf")
  target ||= tmp_target

  metadata = get_metadata(source)

  icc_info = icc_options(options[:colorspace])

  icc_file = Tools::TempFile.name(icc_info[:icc_name], ".icc")
  FileUtils.cp(File.join(Libis::Format::DATA_DIR, "#{icc_info[:icc_name]}.icc"), icc_file)

  def_filename = Tools::TempFile.name("PDFA_def", ".ps")
  File.open(def_filename, "w") do |f|
    f.puts File.read(File.join(Libis::Format::DATA_DIR, "PDFA_def.ps"))
      .gsub("[**ICC profile**]", icc_file)
      .gsub("[**ICC reference**]", icc_info[:icc_ref])
      .gsub("[**METADATA**]", metadata)
  end

  timeout = Libis::Format::Config[:timeouts][:pdf_to_pdfa]
  result = Libis::Tools::Command.run(
    Libis::Format::Config[:ghostscript_cmd],
    "-q",
    "-dBATCH", "-dNOPAUSE", "-dNOOUTERSAVE", "-dNOSAFER",
    # "-dNOPLATFONTS", "-dUseCIEColor=true",
    # "-sColorConversionStrategy=/UseDeviceIndependentColor",
    "-sProcessColorModel=#{icc_info[:device]}",
    "-sOutputICCProfile=#{icc_file}",
    "-dCompatibilityLevel=1.4",
    "-sDEVICE=pdfwrite", "-dPDFA=1", "-dPDFACompatibilityPolicy=1",
    "-o", File.absolute_path(target),
    def_filename,
    source,
    timeout: timeout,
    kill_after: timeout * 2
  )

  raise "#{self.class} took too long (> #{timeout} seconds) to complete" if result[:timeout]
  raise "#{self.class} failed with error #{result[:status]}: \n#{(result[:out] + result[:err]).join("\n")}" if result[:status] != 0

  FileUtils.rm [icc_file, def_filename].compact, force: true

  {
    command: result,
    files: [target]
  }
end