Merge pull request #953 from dwillist/952_inspect_builder_json_format

Format inspect-builder json output before printing

internal/builder/writer/json.go

@@ -1,6 +1,7 @@
 package writer
 
 import (
+	"bytes"
 	"encoding/json"
 )
 
@@ -11,7 +12,15 @@ type JSON struct {
 func NewJSON() BuilderWriter {
 	return &JSON{
 		StructuredFormat: StructuredFormat{
-			MarshalFunc: json.Marshal,
+			MarshalFunc: func(i interface{}) ([]byte, error) {
+				buf, err := json.Marshal(i)
+				if err != nil {
+					return []byte{}, err
+				}
+				formattedBuf := bytes.NewBuffer(nil)
+				err = json.Indent(formattedBuf, buf, "", "  ")
+				return formattedBuf.Bytes(), err
+			},
 		},
 	}
 }