graph.groovy

// https://github.com/mdr/ascii-graphs
@Grapes([
    @Grab('org.scala-lang:scala-library:2.10.1'),
    @Grab('com.github.mdr:ascii-graphs_2.10:0.0.6')
])
import com.github.mdr.ascii.graph.*
import com.github.mdr.ascii.layout.*
import scala.Tuple2
import scala.collection.JavaConversions

def graph = new Graph(
  JavaConversions.asScalaBuffer(["V1", "V2", "V3", "V4", "V5", "V6", "V7"]).toSet(),
  JavaConversions.asScalaBuffer([
    new Tuple2("V1", "V2"),
    new Tuple2("V7", "V1"),
    new Tuple2("V1", "V3"),
    new Tuple2("V1", "V4"),
    new Tuple2("V2", "V5"),
    new Tuple2("V2", "V6")
  ]).toList()
)

def ascii = GraphLayout.renderGraph(graph)

println(ascii)