Module: JasperCommandLine::Jasper

Defined in:
lib/jasper-command-line/jasper.rb

Class Method Summary collapse

Class Method Details

.render_pdf(jasper_file, datasource, parameters, options) ⇒ Object 



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# File 'lib/jasper-command-line/jasper.rb', line 27

def self.render_pdf(jasper_file, datasource, parameters, options)
  initialize_engine

  options ||= {}
  parameters ||= {}
  jrxml_file  = jasper_file.sub(/\.jasper$/, ".jrxml")

  sign_options = options.delete(:signature)
  locale_options = options.delete(:locale)

  # begin
    # Convert the ruby parameters' hash to a java HashMap.
    # Pay attention that, for now, all parameters are converted to string!
    jasper_params = @hashMap.new
    parameters.each do |k,v|
      jasper_params.put(@javaString.new(k.to_s), @javaString.new(v.to_s))
    end

    # Compile it, if needed
    if !File.exist?(jasper_file) || (File.exist?(jrxml_file) && File.mtime(jrxml_file) > File.mtime(jasper_file))
      @jasperCompileManager.compileReportToFile(jrxml_file, jasper_file)
    end

    datasource = datasource.to_xml(options).to_s unless datasource.is_a?(String)

    # Fill the report
    input_source = @inputSource.new
    input_source.setCharacterStream(@stringReader.new(datasource))
    data_document = silence_warnings do
      # This is here to avoid the "already initialized constant DOCUMENT_POSITION_*" warnings.
      @jRXmlUtils._invoke('parse', 'Lorg.xml.sax.InputSource;', input_source)
    end

    jasper_params.put(@jRXPathQueryExecuterFactory.PARAMETER_XML_DATA_DOCUMENT, data_document)

    jasper_params.put(@jRParameter.REPORT_LOCALE, @locale.new(locale_options[:language], locale_options[:sub_language])) if locale_options

    temp_file = Tempfile.new(['pdf-', '.pdf'])
    file = temp_file.path
    temp_file.close!

    created_files = [file]
    merge_pdf_command_line = "gs -q -dBATCH -dPDFSETTINGS=/prepress -dNOPAUSE -sDEVICE=pdfwrite -dEmbedAllFonts=true -sOutputFile=#{file}"

    # Export n copies and merge them into one file
    options[:copies] ||= 1

    copy_file = nil

    (1..options[:copies]).each do |copy|
      copy_temp_file = Tempfile.new(["pdf-#{copy}-", '.pdf'])
      copy_file = copy_temp_file.path
      copy_temp_file.close!

      jasper_params.put @javaString.new('copy_number'), @javaString.new(copy.to_s)
      jasper_print = @jasperFillManager.fillReport(jasper_file, jasper_params)

      File.open(copy_file, 'wb') { |f| f.write @jasperExportManager._invoke('exportReportToPdf', 'Lnet.sf.jasperreports.engine.JasperPrint;', jasper_print) }

      merge_pdf_command_line << " #{copy_file}"

      created_files << copy_file
    end

    if options[:copies] > 1
      # Use GhostScript to create a single page
      `#{merge_pdf_command_line}`
    else
      file = copy_file
    end

    # Digitally sign the file, if necessary
    if sign_options
      temp_signed_file = Tempfile.new(['signed-pdf-', '.pdf'])
      signed_file = temp_signed_file.path

      temp_file.close!
      temp_signed_file.close!

      call_options = [
        '-n',
        '-t', file,
        '-s', sign_options[:key_file],
        '-p', %Q["#{sign_options[:password]}"],
        '-o', signed_file
      ]
      call_options.push '-l', %Q["#{sign_options[:location]}"] if sign_options[:location]
      call_options.push '-r', %Q["#{sign_options[:reason]}"] if sign_options[:reason]

      `java -jar #{File.dirname(__FILE__)}/java/PortableSigner/PortableSigner.jar #{call_options.join(' ')}`
    else
      signed_file = file
    end

    begin
      file_contents = File.read(signed_file)
      raise 'Invalid PDF file' unless file_contents[0..file_contents.index("\n")].chomp =~ /^%PDF-.*?$/

      puts file_contents
    ensure
      created_files.each { |file| File.unlink file if File.exists?(file) }
    end

  # rescue Exception => e
  #   JasperCommandLine.logger.error e.message + "\n " + e.backtrace.join("\n ")

  #   abort e.message
  # end
end