Class: RubySGF::SGF::Record

Inherits:
Object
  • Object
show all
Defined in:
lib/sgf/record.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = nil) ⇒ Record

Returns a new instance of Record.



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# File 'lib/sgf/record.rb', line 11

def initialize(data = nil)
  @data = data
  if data
    @root = Record.create_tree(@data)
  else
    n = Node.new(nil)
    n.properties = Property::DEFAULTS.map do |name, value|
      Property.new(name, [value])
    end
    @root = n
  end
end

Instance Attribute Details

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/sgf/record.rb', line 9

def data
  @data
end

#info ⇒ Object (readonly)

Returns the value of attribute info.



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# File 'lib/sgf/record.rb', line 9

def info
  @info
end

#root ⇒ Object (readonly)

Returns the value of attribute root.



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# File 'lib/sgf/record.rb', line 9

def root
  @root
end

Class Method Details

.create_tree(str) ⇒ Object 



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# File 'lib/sgf/record.rb', line 31

def create_tree(str)
  str = StringScanner.new(str)
  root_node = node = nil
  old_nodes = []
  until str.eos?
    case s = str.getch
    when "("
      old_nodes << node
      node = Node.new(node)
      root_node = node if node.root?
    when ";"
      # pass along all of the properties of the current node to Node for creation
      # we ignore ; ( ) chars inside property values
      node_text = str.scan(/[A-Z]+\[.*?\]\s*[;\(\)]/m).strip[0..-2]
      # look for all property names 
      property_names = node_text.scan(/((?:[A-Z]+)(?:[^\\]|))\[/).flatten
      $stderr << "Error around \"#{str.matched}\": multiple properties of the same type -- all but the first instance will be ignored\n" if property_names.uniq!
      properties = Property.create_many_from_raw(node_text, property_names)
      if node.properties.empty? # every node must have a property
        node.properties = properties
      else
        node = Node.new(node, properties)
      end
      str.pos -= 1 # move back before the ; or ( or )
    when ")"
      node = old_nodes.pop
    else
      next
    end # case
  end # until
  root_node
end

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/sgf/record.rb', line 24

def to_s
  @root.write_tree
end