update: HTTP API

utils/str.go

@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"fmt"
 	"unsafe"
 )
 
@@ -14,3 +15,17 @@ func FromByte(b []byte) string {
 	p := unsafe.SliceData(b)
 	return unsafe.String(p, len(b))
 }
+
+func FormatBytes(bytes int64) string {
+	units := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
+	if bytes == 0 {
+		return fmt.Sprintf("0 B")
+	}
+	size := float64(bytes)
+	unitIndex := 0
+	for size >= 1024 && unitIndex < len(units)-1 {
+		size /= 1024
+		unitIndex++
+	}
+	return fmt.Sprintf("%.2f %s", size, units[unitIndex])
+}