Remove svgo dependency

draw2dsvg/fileutil.go

@@ -3,22 +3,17 @@ package draw2dsvg
 import (
 	"os"
 	"bytes"
-	"errors"
+	_ "errors"
-	svgo "github.com/ajstarks/svgo/float"
 )
 
-func SaveToSvgFile(filePath string, svg *svgo.SVG) error {
+func SaveToSvgFile(filePath string, svg *SVG) error {
 	f, err := os.Create(filePath)
 	if err != nil {
 		return err
 	}
 	defer f.Close()
 
-	if b, ok := svg.Writer.(*bytes.Buffer); ok {
+	bytes.NewBuffer((*bytes.Buffer)(svg).Bytes()).WriteTo(f) // clone buffer to make multiple writes possible
-		bytes.NewBuffer(b.Bytes()).WriteTo(f) // clone buffer to make multiple writes possible
-	} else {
-		return errors.New("Svg has not been not created from with NewSvg (dow not have byte.Buffer as its Writer)")
-	}
 
 	return nil
 }

draw2dsvg/gc.go

@@ -9,7 +9,6 @@ import (
 	"image/color"
 	"github.com/llgcode/draw2d"
 	"github.com/llgcode/draw2d/draw2dbase"
-	svgo "github.com/ajstarks/svgo/float"
 )
 
 const (
@@ -18,18 +17,20 @@ const (
 var (
 )
 
-func NewSvg() *svgo.SVG {
+type SVG bytes.Buffer
-	return svgo.New(&bytes.Buffer{})
+
+func NewSvg() *SVG {
+	return &SVG{}
 }
 
 // GraphicContext implements the draw2d.GraphicContext interface
-// It provides draw2d with a svg backend (based on svgo)
+// It provides draw2d with a svg backend
 type GraphicContext struct {
 	*draw2dbase.StackGraphicContext
-	svg *svgo.SVG
+	svg *SVG
 }
 
-func NewGraphicContext(svg *svgo.SVG) *GraphicContext {
+func NewGraphicContext(svg *SVG) *GraphicContext {
 	gc := &GraphicContext{draw2dbase.NewStackGraphicContext(), svg}
 	return gc
 }