fix #13299

src/vs/code/node/cliProcessMain.ts

@@ -31,6 +31,8 @@ import { IConfigurationService } from 'vs/platform/configuration/common/configur
 import { ConfigurationService } from 'vs/platform/configuration/node/configurationService';
 import { AppInsightsAppender } from 'vs/platform/telemetry/node/appInsightsAppender';
 import { mkdirp } from 'vs/base/node/pfs';
+import { IChoiceService } from 'vs/platform/message/common/message';
+import { ChoiceCliService } from 'vs/platform/message/common/messageCli';
 
 const notFound = id => localize('notFound', "Extension '{0}' not found.", id);
 const notInstalled = id => localize('notInstalled', "Extension '{0}' is not installed.", id);
@@ -167,6 +169,7 @@ export function main(argv: ParsedArgs): TPromise<void> {
 			services.set(IRequestService, new SyncDescriptor(RequestService));
 			services.set(IExtensionManagementService, new SyncDescriptor(ExtensionManagementService));
 			services.set(IExtensionGalleryService, new SyncDescriptor(ExtensionGalleryService));
+			services.set(IChoiceService, new SyncDescriptor(ChoiceCliService));
 
 			if (isBuilt && !extensionDevelopmentPath && product.enableTelemetry) {
 				const appenders: AppInsightsAppender[] = [];

src/vs/platform/message/common/messageCli.ts

+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as readline from 'readline';
+import { TPromise } from 'vs/base/common/winjs.base';
+import { IChoiceService, Severity } from 'vs/platform/message/common/message';
+
+export class ChoiceCliService implements IChoiceService {
+
+	_serviceBrand: any;
+
+	choose(severity: Severity, message: string, options: string[]): TPromise<number> {
+		const promise = new TPromise((c, e) => {
+			const rl = readline.createInterface({
+				input: process.stdin,
+				output: process.stdout,
+				terminal: true
+			});
+			rl.prompt();
+			rl.write(this.toQuestion(message, options));
+
+			rl.prompt();
+
+			rl.once('line', (answer) => {
+				rl.close();
+				c(this.toOption(answer, options));
+			});
+			rl.once('SIGINT', () => {
+				rl.close();
+				promise.cancel();
+			});
+		});
+		return promise;
+	}
+
+	private toQuestion(message: string, options: string[]): string {
+		return options.reduce((previousValue: string, currentValue: string, currentIndex: number) => {
+			return previousValue + currentValue + '(' + currentIndex + ')' + (currentIndex < options.length - 1 ? ' | ' : '\n');
+		}, message + ' ');
+	}
+
+	private toOption(answer: string, options: string[]): number {
+		const value = parseInt(answer);
+		if (!isNaN(value)) {
+			return value;
+		}
+		answer = answer.toLocaleLowerCase();
+		for (let i = 0; i < options.length; i++) {
+			if (options[i].toLocaleLowerCase() === answer) {
+				return i;
+			}
+		}
+		return -1;
+	}
+}
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