emicklei/dot

package main

import (
	"fmt"	
	"github.com/emicklei/dot"
)

// go run main.go | dot -Tpng  > test.png && open test.png

func main() {
	g := dot.NewGraph(dot.Directed)
	n1 := g.Node("coding")
	n2 := g.Node("testing a little").Box()

	g.Edge(n1, n2)
	g.Edge(n2, n1, "back").Attr("color", "red")

	fmt.Println(g.String())
}

digraph {
	node [label="coding"]; n1;
	node [label="testing a little",shape="box"]; n2;
	n1 -> n2;
	n2 -> n1 [color="red", label="back"];
}

g.Node("A").Edge(g.Node("B")).Edge(g.Node("C"))

A -> B -> C

g.Node("D").BidirectionalEdge(g.Node("E"))

D <-> E

s := g.Subgraph("cluster")
s.Attr("style", "filled")

g := dot.NewGraph(dot.Directed)
g.NodeInitializer(func(n dot.Node) {
	n.Attr("shape", "rectangle")
	n.Attr("fontname", "arial")
	n.Attr("style", "rounded,filled")
})

g.EdgeInitializer(func(e dot.Edge) {
	e.Attr("fontname", "arial")
	e.Attr("fontsize", "9")
	e.Attr("arrowsize", "0.8")
	e.Attr("arrowhead", "open")
})

node.Attr("label", Literal(`"left-justified text\l"`))
graph.Attr("label", HTML("<B>Hi</B>"))

di := dot.NewGraph(dot.Directed)
outside := di.Node("Outside")

// A
clusterA := di.Subgraph("Cluster A", dot.ClusterOption{})
insideOne := clusterA.Node("one")
insideTwo := clusterA.Node("two")

// B
clusterB := di.Subgraph("Cluster B", dot.ClusterOption{})
insideThree := clusterB.Node("three")
insideFour := clusterB.Node("four")

// edges
outside.Edge(insideFour).Edge(insideOne).Edge(insideTwo).Edge(insideThree).Edge(outside)

go run main.go | dot -Tpng  > test.png && open test.png

g := dot.NewGraph(dot.Directed)
...
fmt.Println(dot.MermaidGraph(g, dot.MermaidTopToBottom))

go test -coverprofile=coverage.out ./...
go tool cover -html=coverage.out