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graphviz.go
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graphviz.go
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// +build graphviz
package main
import (
"fmt"
"log"
"path/filepath"
"strings"
"github.com/goccy/go-graphviz"
"github.com/goccy/go-graphviz/cgraph"
)
func resultToSvg(result map[string][]string) {
g := graphviz.New()
defer g.Close()
graph, err := g.Graph()
if err != nil {
log.Panicln(err)
}
defer graph.Close()
graph.SetRankDir(cgraph.LRRank)
for from, tos := range result {
fromNode, err := graph.CreateNode(from)
if err != nil {
log.Panicln(err)
}
fromNode.SetStyle(cgraph.BoldNodeStyle)
for _, to := range tos {
toNode, err := graph.CreateNode(to)
if err != nil {
log.Panicln(err)
}
toNode.SetStyle(cgraph.BoldNodeStyle)
edge, err := graph.CreateEdge(from, fromNode, toNode)
if err != nil {
log.Panicln(err)
}
edge.SetURL("#" + from + "->" + to)
edge.SetStyle(cgraph.BoldEdgeStyle)
}
}
format := graphviz.Format(strings.Trim(filepath.Ext(*graphResultFile), "."))
err = g.RenderFilename(graph, format, *graphResultFile)
if err != nil {
log.Panicln(err)
}
fmt.Println("result saved to " + *graphResultFile)
}