fix: use IEC data unit (#29)

module/util/file.go

@@ -1,10 +1,14 @@
 package util
 
 import (
+	"math/big"
+
 	"github.com/dustin/go-humanize"
 )
 
 // ByteCountBinary 把 Length 转换为文件大小, 自适应单位
 func ByteCountBinary(b uint64) string {
-	return humanize.Bytes(b)
+	// uint64 to bigint
+	bigInt := new(big.Int).SetUint64(b)
+	return humanize.BigIBytes(bigInt)
 }

module/util/file_test.go

@@ -22,22 +22,22 @@ func TestByteCountBinary(t *testing.T) {
 		{
 			name: "KB",
 			args: args{b: 1024},
-			want: "1.0 kB",
+			want: "1.0 KiB",
 		},
 		{
 			name: "MB",
 			args: args{b: 1024 * 1024 * 3},
-			want: "3.1 MB",
+			want: "3.0 MiB",
 		},
 		{
 			name: "GB",
 			args: args{b: 1024 * 1024 * 1024 * 3},
-			want: "3.2 GB",
+			want: "3.0 GiB",
 		},
 		{
 			name: "TB",
 			args: args{b: 1024 * 1024 * 1024 * 1024 * 3},
-			want: "3.3 TB",
+			want: "3.0 TiB",
 		},
 	}
 	for _, tt := range tests {