Contents

require 'socket'

module Clamsy

  class OofficeServerNotStartedError < Exception ; end

  class JODConverterPrinter < BasePrinter

    OOFFICE_SERVER_IP = '0.0.0.0'

    class << self

      private

        def doc_to_pdf(doc_path)
          run_ooffice_server
          pdf_path = tmp_pdf_path(doc_path)
          system("#{print_cmd} #{doc_path} #{pdf_path}")
          file_must_exist!(pdf_path, 10) ; pdf_path
        end

        def tmp_pdf_path(doc_path)
          tmp_file([Digest::MD5.hexdigest(doc_path),'.pdf']).path
        end

        def print_cmd
          [
            "#{config.java_bin} -jar",
            File.join(Clamsy::ROOT, 'jodconverter', 'jodconverter-cli-2.2.2.jar'),
            "--port #{ooffice_server_port}",
            '>/dev/null 2>&1'
          ].join(' ')
        end

        def run_ooffice_server
          # NOTE: Since it doesn't hurt to repeatedly start ooffice server, we will always start it.
          system("#{config.ooffice_bin} #{config.ooffice_server_args}")
          ooffice_server_must_be_running!
        end

        def ooffice_server_must_be_running!
          # Adapted from http://stackoverflow.com/questions/517219/ruby-see-if-a-port-is-open
          count, max_count = 0, 10
          begin
            Timeout::timeout(1) { TCPSocket.new(OOFFICE_SERVER_IP, ooffice_server_port).close }
          rescue
            (sleep 1; retry) if (count+=1) < max_count
            raise OofficeServerNotStartedError
          end
        end

        def ooffice_server_port
           config.ooffice_server_args.sub(/^.*port=(\d+).*$/,'\1')
        end

    end

  end

end

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
clamsy-0.0.5	lib/clamsy/jod_converter_printer.rb