diff --git a/cmd/acp/main.go b/cmd/acp/main.go
index 456bc77..251a5a1 100644
--- a/cmd/acp/main.go
+++ b/cmd/acp/main.go
@@ -3,14 +3,10 @@ package main
 import (
 	"context"
 	"flag"
-	"fmt"
 	"os"
 	"os/signal"
-	"unsafe"
 
 	"github.com/abc950309/acp"
-	jsoniter "github.com/json-iterator/go"
-	"github.com/modern-go/reflect2"
 	"github.com/sirupsen/logrus"
 )
 
@@ -113,14 +109,7 @@ func main() {
 			}
 			defer r.Close()
 
-			var buf []byte
-			if *reportIndent {
-				buf, _ = reportJSON.MarshalIndent(report, "", "\t")
-			} else {
-				buf, _ = reportJSON.Marshal(report)
-			}
-
-			r.Write(buf)
+			r.Write([]byte(report.ToJSONString(*reportIndent)))
 		}()
 	}
 
@@ -131,40 +120,3 @@ func main() {
 
 	c.Wait()
 }
-
-var (
-	reportJSON jsoniter.API
-)
-
-type errValCoder struct{}
-
-func (*errValCoder) IsEmpty(ptr unsafe.Pointer) bool {
-	val := (*error)(ptr)
-	return *val == nil
-}
-
-func (*errValCoder) Encode(ptr unsafe.Pointer, stream *jsoniter.Stream) {
-	val := (*error)(ptr)
-	stream.WriteString((*val).Error())
-}
-
-func (*errValCoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
-	val := (*error)(ptr)
-	*val = fmt.Errorf(iter.ReadString())
-}
-
-func init() {
-	reportJSON = jsoniter.Config{
-		EscapeHTML:             true,
-		SortMapKeys:            true,
-		ValidateJsonRawMessage: true,
-	}.Froze()
-
-	var emptyErr error
-	reportJSON.RegisterExtension(jsoniter.EncoderExtension{
-		reflect2.TypeOf(emptyErr): &errValCoder{},
-	})
-	reportJSON.RegisterExtension(jsoniter.DecoderExtension{
-		reflect2.TypeOf(emptyErr): &errValCoder{},
-	})
-}
diff --git a/report.go b/report.go
index 1953f6b..a40f627 100644
--- a/report.go
+++ b/report.go
@@ -1,8 +1,13 @@
 package acp
 
 import (
+	"fmt"
 	"path"
 	"sync"
+	"unsafe"
+
+	jsoniter "github.com/json-iterator/go"
+	"github.com/modern-go/reflect2"
 )
 
 type ReportGetter func() *Report
@@ -35,10 +40,9 @@ func NewReportGetter() (EventHandler, ReportGetter) {
 		for _, j := range jobs {
 			jobsCopyed = append(jobsCopyed, j)
 		}
+
 		errorsCopyed := make([]*Error, 0, len(jobs))
-		for _, e := range errors {
-			errorsCopyed = append(errorsCopyed, e)
-		}
+		errorsCopyed = append(errorsCopyed, errors...)
 
 		return &Report{
 			Jobs:   jobsCopyed,
@@ -52,3 +56,50 @@ type Report struct {
 	Jobs   []*Job   `json:"files,omitempty"`
 	Errors []*Error `json:"errors,omitempty"`
 }
+
+func (r *Report) ToJSONString(indent bool) string {
+	if indent {
+		buf, _ := reportJSON.MarshalIndent(r, "", "\t")
+		return string(buf)
+	}
+
+	buf, _ := reportJSON.Marshal(r)
+	return string(buf)
+}
+
+var (
+	reportJSON jsoniter.API
+)
+
+type errValCoder struct{}
+
+func (*errValCoder) IsEmpty(ptr unsafe.Pointer) bool {
+	val := (*error)(ptr)
+	return *val == nil
+}
+
+func (*errValCoder) Encode(ptr unsafe.Pointer, stream *jsoniter.Stream) {
+	val := (*error)(ptr)
+	stream.WriteString((*val).Error())
+}
+
+func (*errValCoder) Decode(ptr unsafe.Pointer, iter *jsoniter.Iterator) {
+	val := (*error)(ptr)
+	*val = fmt.Errorf(iter.ReadString())
+}
+
+func init() {
+	reportJSON = jsoniter.Config{
+		EscapeHTML:             true,
+		SortMapKeys:            true,
+		ValidateJsonRawMessage: true,
+	}.Froze()
+
+	var emptyErr error
+	reportJSON.RegisterExtension(jsoniter.EncoderExtension{
+		reflect2.TypeOf(emptyErr): &errValCoder{},
+	})
+	reportJSON.RegisterExtension(jsoniter.DecoderExtension{
+		reflect2.TypeOf(emptyErr): &errValCoder{},
+	})
+}