Add trySetOpenedFileAsSketch() method

It allows to set "sketch" value to arduino.json when useActiveSketch value is true.

Author: MrSantiaga

src/deviceContext.ts

@@ -10,6 +10,7 @@ import * as Logger from "./logger/logger";
 
 import { ARDUINO_CONFIG_FILE } from "./common/constants";
 import { ArduinoWorkspace } from "./common/workspace";
+import { VscodeSettings } from "./arduino/vscodeSettings"; 
 
 /**
  * Interface that represents the arduino context information.
@@ -96,6 +97,8 @@ export class DeviceContext implements IDeviceContext, vscode.Disposable {
 
     private _programmer: string;
 
+    private _vscodeSettings = VscodeSettings.getInstance(); 
+
     /**
      * @constructor
      */
@@ -361,4 +364,18 @@ export class DeviceContext implements IDeviceContext, vscode.Disposable {
                 }
             });
     }
+
+    public trySetOpenedFileAsSketch(){ 
+        if(this._vscodeSettings.useActiveSketch) 
+        { 
+            let openedFile = vscode.window.activeTextEditor.document.fileName 
+                .slice(vscode.workspace.rootPath.length + 1); 
+            if(/\.((ino)|(cpp)|c)$/.test(openedFile.trim())){ 
+                this._sketch = openedFile; 
+                this.saveContext(); 
+                return true; 
+            } 
+        } 
+        return false; 
+    }; 
 }