README
¶
go-dot
Simple dot file writer in go
Example use
import (
os
dot "github.com/zenground0/go-dot"
)
g := dot.NewGraph("MyGraph", os.Stdout)
var v1 dot.VertexDescription
v1.ID = "V1"
v1.Label = "Node1"
v1.Color = "blue2"
g.AddVertex(&v1)
var v2 dot.VertexDescription
v2.ID = "V2"
v2.Label = "Node2"
v2.Color = "blue1"
g.AddVertex(&v2)
g.AddEdge(v1, v2, true)
g.WriteDot()
output:
digraph MyGraph {
V1 [label="Node1" color="blue2"]
V2 [label="Node2" color="blue1"]
V1 -> V2
}
Contribute
Currently attribute support is barebones. Only attributes "label" and "color" are implemented. PRs welcome to extend this or add other features. Check the issues for proposals in flight, or this reference http://www.graphviz.org/pdf/dotguide.pdf for new ideas.
License
MIT © Protocol Labs, Inc
Documentation
¶
Overview ¶
Package dot provides an abstraction for painlessly building and printing graphviz dot-files
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type EdgeDescription ¶
type EdgeDescription struct {
From VertexDescription
To VertexDescription
Directed bool
}
EdgeDescription is an element containing all the information needed to fully describe a dot-file edge
type Element ¶
Element captures the information of a dot-file element, typically corresoponding to one line of the file
type Graph ¶
Graph is the graphviz dot-file graph representation.
func (*Graph) AddComment ¶
AddComment interprets the given argument as the text of a comment and schedules the comment to be written in the output dotfile
func (*Graph) AddEdge ¶
func (graph *Graph) AddEdge(v1 *VertexDescription, v2 *VertexDescription, directed bool)
AddEdge constructs an edgedescription connecting the two vertices given as parameters and schedules this element to be written in the output dotfile
Example ¶
buf := new(bytes.Buffer)
g := NewGraph("testGraph")
vTo := &VertexDescription{
ID: "vTo",
}
vFrom := &VertexDescription{
ID: "vFrom",
}
g.AddEdge(vTo, vFrom, true)
g.WriteDot(buf)
s := buf.String()
lines := strings.Split(s, "\n")
fmt.Printf("%d\n", len(lines))
if len(lines) < 3 {
return
}
fmt.Println(lines[2])
Output: 5 vTo -> vFrom
func (*Graph) AddNewLine ¶
func (graph *Graph) AddNewLine()
AddNewLine schedules a newline to be written in the output dotfile
func (*Graph) AddVertex ¶
func (graph *Graph) AddVertex(v *VertexDescription)
AddVertex schedules the vertexdescription to be written in the output dotfile
type Literal ¶
type Literal struct {
Line string
}
Literal is an element consisting of the corresponding literal string printed in the dot-file
type VertexDescription ¶
VertexDescription is an element containing all the information needed to fully describe a dot-file vertex
Source Files