Class: Archsight::Graphvis

Inherits:
Object
  • Object
show all
Defined in:
lib/archsight/graph.rb

Overview

Graphvis implements a graphviz abstraction

Instance Method Summary collapse

Constructor Details

#initialize(name, attrs = {}) ⇒ Graphvis

Returns a new instance of Graphvis.



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# File 'lib/archsight/graph.rb', line 6

def initialize(name, attrs = {})
  @name = name
  @attrs = { rankdir: :LR }.merge(attrs)
end

Instance Method Details

#draw_dot ⇒ Object 



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# File 'lib/archsight/graph.rb', line 11

def draw_dot(&)
  f = StringIO.new
  render(f, &)
  f.string
end

#edge(node_a, node_b, attrs = {}) ⇒ Object 



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# File 'lib/archsight/graph.rb', line 35

def edge(node_a, node_b, attrs = {})
  @file.print "  #{node_a.inspect} -> #{node_b.inspect} ["
  attrs.each do |k, v|
    @file.print " #{k.to_s.inspect} = #{value v}"
  end
  @file.puts " ];"
end

#node(name, attrs = {}) ⇒ Object 



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# File 'lib/archsight/graph.rb', line 27

def node(name, attrs = {})
  @file.print "  #{name.inspect} ["
  attrs.each do |k, v|
    @file.print " #{k.to_s.inspect} = #{value v}"
  end
  @file.puts " ];"
end

#render(file) {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/archsight/graph.rb', line 17

def render(file)
  @file = file
  file.puts "digraph G {"
  @attrs.each do |k, v|
    @file.puts " #{k.to_s.inspect} = #{value v};"
  end
  yield(self)
  file.puts "}"
end

#same_rank {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/archsight/graph.rb', line 57

def same_rank
  @file.puts "  { rank = same; "
  yield(self)
  @file.puts "  }"
end

#subgraph(name, attrs) {|_self| ... } ⇒ Object

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/archsight/graph.rb', line 43

def subgraph(name, attrs)
  @file.puts "  subgraph #{name.inspect} {"
  attrs.each do |k, v|
    @file.puts " #{k.to_s.inspect} = #{value v};"
  end
  yield(self)
  @file.puts "  }"
end

#value(val) ⇒ Object 



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# File 'lib/archsight/graph.rb', line 52

def value(val)
  val = val.to_s
  val =~ /^<.*>$/ ? "<#{val}>" : val.inspect
end