From 8b9baa680aa9e194f0e8f23ae9484927986a9f60 Mon Sep 17 00:00:00 2001
From: Alexey Kostin <rumanzo@yandex.ru>
Date: Mon, 14 May 2018 00:40:36 +0300
Subject: [PATCH] Faster ASCIIconvert

---
 bt2qbt.go | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/bt2qbt.go b/bt2qbt.go
index d2b64b3..5836c58 100644
--- a/bt2qbt.go
+++ b/bt2qbt.go
@@ -19,17 +19,19 @@ import (
 	"strings"
 	"sync"
 	"time"
+	"bytes"
 )
 
-func ASCIIconvert(s string) (newstring string) {
+func ASCIIconvert(s string) string {
+	var buffer bytes.Buffer
 	for _, c := range s {
 		if c > 127 {
-			newstring = fmt.Sprintf("%v\\x%x", newstring, c)
+			buffer.WriteString(`\x` + strconv.FormatUint(uint64(c), 16))
 		} else {
-			newstring = fmt.Sprintf("%v%v", newstring, string(c))
+			buffer.WriteString(string(c))
 		}
 	}
-	return
+	return buffer.String()
 }
 
 func checknotexists(s string, tags []string) (bool, string) {