Delint'd.

cmd/decode.go

@@ -38,6 +38,11 @@ import (
 	"github.com/wtsi-ssg/wrstat/v5/internal/encode"
 )
 
+const (
+	statsColumn       = 0
+	byUserGroupColumn = 2
+)
+
 // chtsvCmd represents the chtsv command.
 var decodeCmd = &cobra.Command{
 	Use:   "decode",
@@ -52,7 +57,7 @@ Files with names ending in '.gz' will be decompressed before printing.
 
 Other files are simply copied to stdout.
 `,
-	Run: func(cmd *cobra.Command, args []string) {
+	Run: func(_ *cobra.Command, args []string) {
 		for _, file := range args {
 			if err := decodeFile(file); err != nil {
 				die("%s", err)
@@ -88,8 +93,10 @@ func decodeFile(file string) error {
 	var col int
 
 	if strings.HasSuffix(file, ".byusergroup") {
-		col = 2
-	} else if !strings.HasSuffix(file, ".stats") {
+		col = byUserGroupColumn
+	} else if strings.HasSuffix(file, ".stats") {
+		col = statsColumn
+	} else {
 		_, err = io.Copy(os.Stdout, r)
 
 		return err
@@ -115,7 +122,9 @@ func decodeColumn(r io.Reader, col int) error {
 		}
 
 		if line == "\n" {
-			w.WriteString(line)
+			if _, err := w.WriteString(line); err != nil {
+				return err
+			}
 
 			continue
 		}