From 7f3fc590d777f47bba302b5812ba9041793a49ad Mon Sep 17 00:00:00 2001
From: Martchus <martchus@gmx.net>
Date: Tue, 16 Feb 2021 01:13:34 +0100
Subject: [PATCH] Use String.prototype.padStart() in renaming utility examples

---
 resources/scripts/renamefiles/advanced-example.js | 7 +------
 resources/scripts/renamefiles/simple-example.js   | 6 +++---
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/resources/scripts/renamefiles/advanced-example.js b/resources/scripts/renamefiles/advanced-example.js
index 024f252..81ca094 100644
--- a/resources/scripts/renamefiles/advanced-example.js
+++ b/resources/scripts/renamefiles/advanced-example.js
@@ -52,12 +52,7 @@ function notNull(value) {
 }
 // returns the string representation of \a pos using at least as many digits as \a total has
 function appropriateDigitCount(pos, total) {
-    var res = pos + ""
-    var count = (total + "").length
-    while (res.length < count) {
-        res = "0" + res
-    }
-    return res
+    return pos.toString().padStart(total.toString().length, "0")
 }
 // returns a copy of the specified \a name with characters that might be avoided in file names striped out
 function validFileName(name) {
diff --git a/resources/scripts/renamefiles/simple-example.js b/resources/scripts/renamefiles/simple-example.js
index e628c72..c11c3ab 100644
--- a/resources/scripts/renamefiles/simple-example.js
+++ b/resources/scripts/renamefiles/simple-example.js
@@ -25,8 +25,8 @@ if (!fileInfo.hasAudioTracks && !fileInfo.hasVideoTracks) {
 const fieldsToInclude = [tag.albumartist || tag.artist, tag.album, tag.trackPos || infoFromFileName.trackPos, tag.title || infoFromFileName.title]
 let newName = ""
 for (let field of fieldsToInclude) {
-    if (typeof field === "number") {
-        for (field = field + "", count = (tag.trackTotal + "").length; field.length < count; field = "0" + field);
+    if (typeof field === "number" && tag.trackTotal) {
+        field = field.toString().padStart(tag.trackTotal.toString().length, "0")
     }
     if (field && field.length !== 0) {
         newName = newName.concat(newName.length === 0 ? "" : " - ", field)
@@ -35,4 +35,4 @@ for (let field of fieldsToInclude) {
 newName = newName.concat(".", fileInfo.suitableSuffix || fileInfo.currentSuffix)
 
 // apply new name
-tageditor.rename(newName)
\ No newline at end of file
+tageditor.rename(newName)