fix: file not contain owner and group

lib/file/file_linux.go

@@ -6,6 +6,7 @@ package file
 import (
 	"fmt"
 	"os"
+	"os/user"
 	"path/filepath"
 	"syscall"
 )
@@ -42,12 +43,24 @@ func GetFileInfo(dir, suffix string) ([]FileInfo, error) {
 
 		// check if match suffix
 		if (suffix != "" && filepath.Ext(path) == suffix) || suffix == "" {
+			stat, ok := info.Sys().(*syscall.Stat_t)
+			if !ok {
+				return fmt.Errorf("not a syscall.Stat_t")
+			}
+			userInfo, err := user.LookupId(fmt.Sprint(stat.Uid))
+			if err != nil {
+				return err
+			}
+			groupInfo, err := user.LookupGroupId(fmt.Sprint(stat.Gid))
+			if err != nil {
+				return err
+			}
 			fileInfo := FileInfo{
 				FileType:     fileType,
 				FileMode:     info.Mode().String(),
 				LinkCount:    int64(info.Sys().(*syscall.Stat_t).Nlink),
-				Owner:        fmt.Sprintf("%d", info.Sys().(*syscall.Stat_t).Uid),
+				Owner:        userInfo.Username,
-				Group:        fmt.Sprintf("%d", info.Sys().(*syscall.Stat_t).Gid),
+				Group:        groupInfo.Name,
 				Size:         info.Size(),
 				ModifiedTime: info.ModTime().Unix(),
 				FileName:     info.Name(),