// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license. import Dirent from "./_fs_dirent.ts"; import { assert } from "../../_util/assert.ts"; export default class Dir { private dirPath: string | Uint8Array; private syncIterator!: Iterator | null; private asyncIterator!: AsyncIterator | null; constructor(path: string | Uint8Array) { this.dirPath = path; } get path(): string { if (this.dirPath instanceof Uint8Array) { return new TextDecoder().decode(this.dirPath); } return this.dirPath; } // eslint-disable-next-line @typescript-eslint/no-explicit-any read(callback?: (...args: any[]) => void): Promise { return new Promise((resolve, reject) => { if (!this.asyncIterator) { this.asyncIterator = Deno.readDir(this.path)[Symbol.asyncIterator](); } assert(this.asyncIterator); this.asyncIterator .next() .then(({ value }) => { resolve(value ? value : null); if (callback) { callback(null, value ? value : null); } }) .catch((err) => { if (callback) { callback(err, null); } reject(err); }); }); } readSync(): Dirent | null { if (!this.syncIterator) { this.syncIterator = Deno.readDirSync(this.path)![Symbol.iterator](); } const file: Deno.DirEntry = this.syncIterator.next().value; return file ? new Dirent(file) : null; } /** * Unlike Node, Deno does not require managing resource ids for reading * directories, and therefore does not need to close directories when * finished reading. */ // eslint-disable-next-line @typescript-eslint/no-explicit-any close(callback?: (...args: any[]) => void): Promise { return new Promise((resolve, reject) => { try { if (callback) { callback(null); } resolve(); } catch (err) { if (callback) { callback(err); } reject(err); } }); } /** * Unlike Node, Deno does not require managing resource ids for reading * directories, and therefore does not need to close directories when * finished reading */ closeSync(): void { //No op } async *[Symbol.asyncIterator](): AsyncIterableIterator { try { while (true) { const dirent: Dirent | null = await this.read(); if (dirent === null) { break; } yield dirent; } } finally { await this.close(); } } }