microsoft/vscode-react-native
Publicmirrored from https://github.com/microsoft/vscode-react-nativeAvailable
src/test/resources/simulators/apkSerializer.ts
51lines · modeblame
a2e27a97digeff10 years ago | 1 | // Copyright (c) Microsoft Corporation. All rights reserved. |
| 2 | // Licensed under the MIT license. See LICENSE file in the project root for details. | |
| 3 | | |
| 4 | import * as path from "path"; | |
| 5 | import {FileSystem} from "../../../common/node/fileSystem"; | |
| 6 | | |
| 7 | interface IAPKInformation { | |
| 8 | packageName: string; | |
| 9 | } | |
| 10 | | |
| 11 | const APK_FORMAT_SIGNATURE = "APKSimulatedFormat"; | |
| 12 | | |
| 13 | interface IAPKFormat { | |
| 14 | format: "APKSimulatedFormat"; | |
| 15 | information: IAPKInformation; | |
| 16 | } | |
| 17 | | |
| 18 | /* This class stores a "fake" APK file in the file system, and then can be used to verify that a certain file is a | |
| 19 | valid "fake" APK file, and also read metadata from it. */ | |
| 20 | export class APKSerializer { | |
| 21 | private fileSystem: FileSystem; | |
| 22 | | |
| 23 | constructor(fileSystem: FileSystem) { | |
| 24 | this.fileSystem = fileSystem; | |
| 25 | } | |
| 26 | | |
| 27 | public readPackageNameFromFile(apkPath: string): Q.Promise<string> { | |
| 28 | return this.fileSystem.readFile(apkPath, "utf8").then(data => { | |
| 29 | const information = this.readAPKData(data); | |
| 30 | return information.packageName; | |
| 31 | }); | |
| 32 | } | |
| 33 | | |
| 34 | public writeApk(apkPath: string, information: IAPKInformation): Q.Promise<void> { | |
| 35 | this.fileSystem.makeDirectoryRecursiveSync(path.dirname(apkPath)); | |
| 36 | return this.fileSystem.writeFile(apkPath, this.generateAPKData(information)); | |
| 37 | } | |
| 38 | | |
| 39 | private generateAPKData(information: IAPKInformation): string { | |
| 40 | return JSON.stringify({ format: APK_FORMAT_SIGNATURE, information: information}); | |
| 41 | } | |
| 42 | | |
| 43 | private readAPKData(data: string): IAPKInformation { | |
| 44 | const json = JSON.parse(data); | |
| 45 | if (json.format === APK_FORMAT_SIGNATURE) { | |
| 46 | return (<IAPKFormat>json).information; | |
| 47 | } else { | |
| 48 | throw new Error("Attempted to read an invalid simulated .apk file"); | |
| 49 | } | |
| 50 | } | |
| 51 | } |