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# encoding: UTF-8
module Axlsx
  # The core object for the package.
  # @note Packages manage their own core object.
  # @see Package#core
  class Core
    # The author of the document. By default this is 'axlsx'
    # @return [String]
    attr_accessor :creator

    # Creates a new Core object.
    # @option options [String] creator
    def initialize(options={})
      @creator = options[:creator] || 'axlsx'
    end

    # serializes the core.xml document
    # @return [String]
    def to_xml_string(str = '')
      str << '<?xml version="1.0" encoding="UTF-8"?>'
      str << '<cp:coreProperties xmlns:cp="' << CORE_NS << '" xmlns:dc="' << CORE_NS_DC << '" '
      str << 'xmlns:dcmitype="' << CORE_NS_DCMIT << '" xmlns:dcterms="' << CORE_NS_DCT << '" '
      str << 'xmlns:xsi="' << CORE_NS_XSI << '">'
      str << '<dc:creator>' << self.creator << '</dc:creator>'
      str << '<dcterms:created xsi:type="dcterms:W3CDTF">' << Time.now.strftime('%Y-%m-%dT%H:%M:%S') << '</dcterms:created>'
      str << '<cp:revision>0</cp:revision>'
      str << '</cp:coreProperties>'
    end
  end
end