fix the output path not exist issue (microsoft#653)

Author: czgtest

src/arduino/arduino.ts

@@ -141,7 +141,14 @@ export class ArduinoApp {
         }
         if (dc.output) {
             const outputPath = path.resolve(ArduinoWorkspace.rootPath, dc.output);
+            const dirPath = path.dirname(outputPath);
+            if (!util.directoryExistsSync(dirPath)) {
+                Logger.notifyUserError("InvalidOutPutPath", new Error(constants.messages.INVALID_OUTPUT_PATH + outputPath));
+                return;
+            }
+
             args.push("--pref", `build.path=${outputPath}`);
+            arduinoChannel.info(`Please see the build logs in Output path: ${outputPath}`);
         } else {
             const msg = "Output path is not specified. Unable to reuse previously compiled files. Upload could be slow. See README.";
             arduinoChannel.warning(msg);
@@ -254,7 +261,14 @@ export class ArduinoApp {
         }
         if (output || dc.output) {
             const outputPath = path.resolve(ArduinoWorkspace.rootPath, output || dc.output);
+            const dirPath = path.dirname(outputPath);
+            if (!util.directoryExistsSync(dirPath)) {
+                Logger.notifyUserError("InvalidOutPutPath", new Error(constants.messages.INVALID_OUTPUT_PATH + outputPath));
+                return;
+            }
+
             args.push("--pref", `build.path=${outputPath}`);
+            arduinoChannel.info(`Please see the build logs in Output path: ${outputPath}`);
         } else {
             const msg = "Output path is not specified. Unable to reuse previously compiled files. Verify could be slow. See README.";
             arduinoChannel.warning(msg);

src/common/constants.ts

@@ -29,6 +29,7 @@ export const messages = {
     SERIAL_PORT_NOT_STARTED: "Serial Monitor has not been started.",
     SEND_BEFORE_OPEN_SERIALPORT: "Please open a serial port first.",
     NO_PROGRAMMMER_SELECTED: "Please select the programmer first.",
+    INVALID_OUTPUT_PATH: "Please check the \"output\" in the sketch Settings.Cannot find the output path:",
 };
 
 export const statusBarPriority = {