Extract chunkSize as a const

diff --git a/storage/boltdb.go b/storage/boltdb.go
index a198f4888a332c8c964f694c5c848cc9795591de..f65382b3ff57f67b7813912cb6daad6ab456fbe1 100644 (file)
--- a/storage/boltdb.go
+++ b/storage/boltdb.go
@@ -10,6 +10,8 @@ import (
        "github.com/anacrolix/torrent/metainfo"
 )
 
+const chunkSize = 1 << 14
+
 var (
        data      = []byte("data")
        completed = []byte("completed")
@@ -85,12 +87,12 @@ func (me *boltDBPiece) ReadAt(b []byte, off int64) (n int, err error) {
                if db == nil {
                        return nil
                }
-               ci := off / (1 << 14)
-               off %= 1 << 14
+               ci := off / chunkSize
+               off %= chunkSize
                for len(b) != 0 {
                        ck := me.chunkKey(int(ci))
                        _b := db.Get(ck[:])
-                       if len(_b) != 1<<14 {
+                       if len(_b) != chunkSize {
                                break
                        }
                        n1 := copy(b, _b[off:])
@@ -124,10 +126,10 @@ func (me *boltDBPiece) WriteAt(b []byte, off int64) (n int, err error) {
                if err != nil {
                        return err
                }
-               ci := off / (1 << 14)
-               off %= 1 << 14
+               ci := off / chunkSize
+               off %= chunkSize
                for len(b) != 0 {
-                       _b := make([]byte, 1<<14)
+                       _b := make([]byte, chunkSize)
                        ck := me.chunkKey(int(ci))
                        copy(_b, db.Get(ck[:]))
                        n1 := copy(_b[off:], b)