Replace fileEndFlag with os package constant

id3.go

@@ -41,10 +41,6 @@ type File struct {
 	file         *os.File
 }
 
-const (
-	fileEndFlag = 2
-)
-
 // Opens a new tagged file
 func Open(name string) (*File, error) {
 	fi, err := os.OpenFile(name, os.O_RDWR, 0666)
@@ -72,7 +68,7 @@ func (f *File) Close() error {
 
 	switch f.Tagger.(type) {
 	case (*v1.Tag):
-		if _, err := f.file.Seek(-v1.TagSize, fileEndFlag); err != nil {
+		if _, err := f.file.Seek(-v1.TagSize, os.SEEK_END); err != nil {
 			return err
 		}
 

v1/id3v1.go

@@ -6,11 +6,11 @@ package v1
 import (
 	v2 "github.com/mikkyang/id3-go/v2"
 	"io"
+	"os"
 )
 
 const (
-	TagSize     = 128
-	fileEndFlag = 2
+	TagSize = 128
 )
 
 var (
@@ -45,7 +45,7 @@ type Tag struct {
 }
 
 func ParseTag(readSeeker io.ReadSeeker) *Tag {
-	readSeeker.Seek(-TagSize, fileEndFlag)
+	readSeeker.Seek(-TagSize, os.SEEK_END)
 
 	data := make([]byte, TagSize)
 	n, err := io.ReadFull(readSeeker, data)