microsoft/vscode-react-native
Publicmirrored from https://github.com/microsoft/vscode-react-nativeAvailable
src/common/downloadHelper.ts
61lines · modecode
| 1 | // Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | // Licensed under the MIT license. See LICENSE file in the project root for details. |
| 3 | import * as fs from "fs"; |
| 4 | import * as https from "https"; |
| 5 | import * as vscode from "vscode"; |
| 6 | import { OutputChannelLogger } from "../extension/log/OutputChannelLogger"; |
| 7 | |
| 8 | export async function downloadFile(url: any, targetFile: any) { |
| 9 | const logger = OutputChannelLogger.getMainChannel(); |
| 10 | let progress = 0; |
| 11 | let newProgress = 0; |
| 12 | return await new Promise((resolve, reject) => { |
| 13 | const request = https |
| 14 | .get(url, response => { |
| 15 | const code = response.statusCode ?? 0; |
| 16 | |
| 17 | if (code >= 400) { |
| 18 | return reject(new Error(response.statusMessage)); |
| 19 | } |
| 20 | |
| 21 | const file = fs.createWriteStream(targetFile); |
| 22 | const totalLength = parseInt(response.headers["content-length"] as string, 10); |
| 23 | |
| 24 | response.pipe(file); |
| 25 | response.on("data", async function (chunk) { |
| 26 | newProgress += chunk.length; |
| 27 | const currentProgress = |
| 28 | parseFloat(getDownloadProgress(newProgress, totalLength)) * 100; |
| 29 | if (currentProgress - progress >= 5) { |
| 30 | progress = currentProgress; |
| 31 | logger.logStream( |
| 32 | `Current progress: ${currentProgress}%, please wait... \n`, |
| 33 | ); |
| 34 | } |
| 35 | }); |
| 36 | |
| 37 | file.on("finish", async () => { |
| 38 | file.close(); |
| 39 | logger.logStream(`Download Expo Go Completed: ${targetFile as string}`); |
| 40 | void vscode.window.showInformationMessage("Download Expo Go Completed."); |
| 41 | }); |
| 42 | |
| 43 | response.on("end", function () { |
| 44 | console.log("Progress end."); |
| 45 | }); |
| 46 | }) |
| 47 | .on("error", error => { |
| 48 | reject(error); |
| 49 | }); |
| 50 | |
| 51 | request.end(); |
| 52 | }); |
| 53 | } |
| 54 | |
| 55 | export async function downloadExpoGo(url: string, targetFile: string) { |
| 56 | await downloadFile(url, targetFile); |
| 57 | } |
| 58 | |
| 59 | function getDownloadProgress(currentLength: number, totalLength: number): string { |
| 60 | return (currentLength / totalLength).toFixed(2); |
| 61 | } |
| 62 | |