Merge pull request #45 from telerik/fatme/show-application-output

Show application output

Author: Fatme

lib/declarations.ts

@@ -27,7 +27,7 @@ interface IDevice {
 }
 
 interface ISimctl {
-	launch(deviceId: string, applicationIdentifier: string): IFuture<void>;
+	launch(deviceId: string, applicationIdentifier: string): IFuture<string>;
 	install(deviceId: string, applicationPath: string): IFuture<void>;
 	uninstall(deviceId: string, applicationIdentifier: string): IFuture<void>;
 	notifyPost(deviceId: string, notification: string): IFuture<void>;

lib/iphone-simulator-xcode-7.ts

@@ -11,6 +11,7 @@ import util = require("util");
 import utils = require("./utils");
 import xcode = require("./xcode");
 var $ = require("NodObjC");
+var osenv = require("osenv");
 
 export class XCode7Simulator implements ISimulator {
 	private static DEVICE_IDENTIFIER_PREFIX = "com.apple.CoreSimulator.SimDeviceType";
@@ -55,7 +56,31 @@ export class XCode7Simulator implements ISimulator {
 			}
 
 			this.simctl.install(device.id, applicationPath).wait();
-			this.simctl.launch(device.id, applicationIdentifier).wait();
+			let launchResult = this.simctl.launch(device.id, applicationIdentifier).wait();
+
+			if (options.logging) {
+				let pid = launchResult.split(":")[1].trim();
+				let logFilePath = path.join(osenv.home(), "Library", "Logs", "CoreSimulator", device.id, "system.log");
+
+				let childProcess = require("child_process").spawn("tail", ['-f', '-n', '1', logFilePath]);
+				if(childProcess.stdout) {
+					childProcess.stdout.on("data", (data: NodeBuffer) => {
+						let dataAsString = data.toString();
+						if (dataAsString.indexOf(`[${pid}]`) > -1) {
+							console.log(dataAsString);
+						}
+					});
+				}
+
+				if(childProcess.stderr) {
+					childProcess.stderr.on("data", (data: string) => {
+						let dataAsString = data.toString();
+						if (dataAsString.indexOf(`[${pid}]`) > -1) {
+							console.error(dataAsString);
+						}
+					});
+				}
+			}
 		}).future<void>()();
 	}
 

lib/simctl.ts

@@ -8,9 +8,9 @@ import options = require("./options");
 
 export class Simctl implements ISimctl {
 
-	public launch(deviceId: string, applicationIdentifier: string): IFuture<void> {
+	public launch(deviceId: string, applicationIdentifier: string): IFuture<string> {
 		let args: string[] = [];
-		if(options.waitForDebugger) {
+		if (options.waitForDebugger) {
 			args.push("-w");
 		}