1 files changed, 30 insertions, 3 deletions
diff --git a/vendor/codeberg.org/gruf/go-kv/field_fmt.go b/vendor/codeberg.org/gruf/go-kv/field_fmt.go
index c62393fe0..fcdcc5e17 100644
--- a/vendor/codeberg.org/gruf/go-kv/field_fmt.go
+++ b/vendor/codeberg.org/gruf/go-kv/field_fmt.go
@@ -5,10 +5,18 @@ package kv
 
 import (
 	"fmt"
+	"sync"
 
 	"codeberg.org/gruf/go-byteutil"
 )
 
+// bufPool is a memory pool of byte buffers.
+var bufPool = sync.Pool{
+	New: func() interface{} {
+		return &byteutil.Buffer{B: make([]byte, 0, 512)}
+	},
+}
+
 // AppendFormat will append formatted format of Field to 'buf'. See .String() for details.
 func (f Field) AppendFormat(buf *byteutil.Buffer, vbose bool) {
 	var fmtstr string
@@ -17,9 +25,9 @@ func (f Field) AppendFormat(buf *byteutil.Buffer, vbose bool) {
 	} else /* regular */ {
 		fmtstr = `%+v`
 	}
-	appendQuoteKey(buf, f.K)
+	AppendQuoteKey(buf, f.K)
 	buf.WriteByte('=')
-	appendQuoteValue(buf, fmt.Sprintf(fmtstr, f.V))
+	appendValuef(buf, fmtstr, f.V)
 }
 
 // Value returns the formatted value string of this Field.
@@ -31,6 +39,25 @@ func (f Field) Value(vbose bool) string {
 		fmtstr = `%+v`
 	}
 	buf := byteutil.Buffer{B: make([]byte, 0, bufsize/2)}
-	appendQuoteValue(&buf, fmt.Sprintf(fmtstr, f.V))
+	appendValuef(&buf, fmtstr, f.V)
 	return buf.String()
 }
+
+// appendValuef appends a quoted value string (formatted by fmt.Appendf) to 'buf'.
+func appendValuef(buf *byteutil.Buffer, format string, args ...interface{}) {
+	// Write format string to a byte buffer
+	fmtbuf := bufPool.Get().(*byteutil.Buffer)
+	fmtbuf.B = fmt.Appendf(fmtbuf.B, format, args...)
+
+	// Append quoted value to dst buffer
+	AppendQuoteValue(buf, fmtbuf.String())
+
+	// Drop overly large capacity buffers
+	if fmtbuf.Cap() > int(^uint16(0)) {
+		return
+	}
+
+	// Replace buffer in pool
+	fmtbuf.Reset()
+	bufPool.Put(fmtbuf)
+}