/
tgf.go
44 lines (36 loc) · 859 Bytes
/
tgf.go
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package graph
import (
"fmt"
"io"
"strings"
"text/template"
"github.com/loov/goda/internal/pkggraph"
)
type TGF struct {
out io.Writer
err io.Writer
label *template.Template
}
func (ctx *TGF) Label(p *pkggraph.Node) string {
var labelText strings.Builder
err := ctx.label.Execute(&labelText, p)
if err != nil {
fmt.Fprintf(ctx.err, "template error: %v\n", err)
}
return labelText.String()
}
func (ctx *TGF) Write(graph *pkggraph.Graph) error {
indexCache := map[*pkggraph.Node]int64{}
for i, node := range graph.Sorted {
label := ctx.Label(node)
indexCache[node] = int64(i + 1)
fmt.Fprintf(ctx.out, "%d %s\n", i+1, label)
}
fmt.Fprintf(ctx.out, "#\n")
for _, node := range graph.Sorted {
for _, imp := range node.ImportsNodes {
fmt.Fprintf(ctx.out, "%d %d\n", indexCache[node], indexCache[imp])
}
}
return nil
}