Class: Treat::Workers::Formatters::Serializers::XML

Inherits:
Object
  • Object
show all
Defined in:
lib/treat/workers/formatters/serializers/xml.rb

Overview

Serialization of entities to XML format.

Class Method Summary collapse

Class Method Details

.escape(input) ⇒ Object 



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# File 'lib/treat/workers/formatters/serializers/xml.rb', line 72

def self.escape(input)
  result = input.to_s.dup
  result.gsub!("&", "&")
  result.gsub!("<", "&lt;")
  result.gsub!(">", "&gt;")
  result.gsub!("'", "&apos;")
  result.gsub!("\"", "&quot;")
  result
end

.recurse(entity, options) ⇒ Object 



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# File 'lib/treat/workers/formatters/serializers/xml.rb', line 23

def self.recurse(entity, options)
  spaces, string = '', ''
  options[:indent].times { spaces << ' ' }
  attributes = " id='#{entity.id}'"
  if !entity.features.nil? && entity.features.size != 0
    attributes << ' '
    entity.features.each_pair do |feature, value|
      if value.is_a? Treat::Entities::Entity
        attributes << "#{feature}='#{value.id}' "
      else
        value = value.inspect if value.is_a?(Symbol)
        attributes << "#{feature}='#{escape(value)}' "
      end
    end
    ############ To be refactored
    unless entity.edges.empty?
      attributes << "edges='"
      a = []
      entity.edges.each do |edge|
        a << ("{target: #{edge.target}, "+
        "type: #{edge.type}, " +
        "directed: #{edge.directed}, " +
        "direction: #{edge.direction}}" )
      end
      # Structs.
      attributes << a.join(',') + "'"
    end
    ############ End of ugly code
  end
  tag = entity.class.to_s.split('::')[-1].downcase
  string += "#{spaces}<#{tag}#{attributes}>"
  unless entity.is_a?(Treat::Entities::Token)
    string += "\n"
  end
  if entity.has_children?
    options[:indent] += 1
    entity.children.each do |child|
      string += self.recurse(child, options)
    end
    options[:indent] -= 1
  else
    string += "#{escape(entity.value)}"
  end
  unless entity.is_a?(Treat::Entities::Token)
    string += "#{spaces}"
  end
  string += "</#{tag}>\n"
end

.serialize(entity, options = {}) ⇒ Object

Serialize an entity tree in XML format.

Options:

  • (String) :file => a file to write to.



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# File 'lib/treat/workers/formatters/serializers/xml.rb', line 10

def self.serialize(entity, options = {})
  options[:file] ||= (entity.id.to_s + '.xml')
  options[:indent] = 0
  enc = entity.to_s.encoding.to_s.downcase
  string = "<?xml version=\"1.0\" " +
  "encoding=\"#{enc}\" ?>\n<treat>\n"
  val = self.recurse(entity, options)
  string += "#{val}\n</treat>"
  File.open(options[:file], 'w') do |f|
    f.write(string)
  end; return options[:file]
end