Class: GraphViz::DOTScript

Inherits:

Object

• Object
• GraphViz::DOTScript

show all

Extended by:

Forwardable

Defined in:

lib/graphviz/dot_script.rb

Instance Method Summary (collapse)

• - (Object) add_type(type, data)
• - (Object) append(line) (also: #<<)
• - (DOTScript) initialize constructor

  A new instance of DOTScript.

• - (Object) make_subgraph(name)
• - (Object) prepend(line)
• - (Object) to_str (also: #to_s)

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# File 'lib/graphviz/dot_script.rb', line 53

def initialize
  @script = ''
end

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# File 'lib/graphviz/dot_script.rb', line 74

def add_type(type, data)
  return self if data.empty?

  case type
  when "graph_attr"
    append_statement("  " + data)
  when "node_attr"
    append_statement("  node [" + data + "]")
  when "edge_attr"
    append_statement("  edge [" + data + "]")
  else
    raise ArgumentError,
      "Unknown type: #{type}." <<
      "Possible: 'graph_attr','node_attr','edge_attr'"
  end

  self
end

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# File 'lib/graphviz/dot_script.rb', line 57

def append(line)
  @script << assure_ends_with(line.to_s,"\n")

  self
end

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# File 'lib/graphviz/dot_script.rb', line 70

def make_subgraph(name)
  prepend(assure_ends_with("subgraph #{name}"," {"))
end

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# File 'lib/graphviz/dot_script.rb', line 64

def prepend(line)
  @script = assure_ends_with(line.to_s,"\n") + @script

  self
end

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# File 'lib/graphviz/dot_script.rb', line 93

def to_str
  @script
end