新增下载的歌曲按列表名分组的功能（#2145）

src/common/utils/nodejs.ts

@@ -31,6 +31,25 @@ export const checkPath = async(path: string): Promise<boolean> => {
   })
 }
 
+/**
+ * 检查路径并创建目录
+ * @param path
+ * @returns
+ */
+export const checkAndCreateDir = async(path: string) => {
+  return fs.promises.access(path, fs.constants.F_OK | fs.constants.W_OK)
+    .catch(async(err: NodeJS.ErrnoException) => {
+      if (err.code != 'ENOENT') throw err as Error
+      return fs.promises.mkdir(path, { recursive: true })
+    })
+    .then(() => true)
+    .catch((err) => {
+      console.error(err)
+      return false
+    })
+}
+
+
 export const getFileStats = async(path: string): Promise<fs.Stats | null> => {
   return new Promise(resolve => {
     if (!path) {

src/common/utils/tools.ts

@@ -130,3 +130,21 @@ export const filterMusicList = <T extends LX.Music.MusicInfo>(list: T[]): T[] =>
     return true
   })
 }
+
+
+const MAX_NAME_LENGTH = 80
+const MAX_FILE_NAME_LENGTH = 150
+export const clipNameLength = (name: string) => {
+  if (name.length <= MAX_NAME_LENGTH || !name.includes('、')) return name
+  const names = name.split('、')
+  let newName = names.shift()!
+  for (const name of names) {
+    if (newName.length + name.length > MAX_NAME_LENGTH) break
+    newName = newName + '、' + name
+  }
+  return newName
+}
+export const clipFileNameLength = (name: string) => {
+  return name.length > MAX_FILE_NAME_LENGTH ? name.substring(0, MAX_FILE_NAME_LENGTH) : name
+}
+