added Modest executable location in configuration

package.json

@@ -16,14 +16,12 @@
 				"title": "Simulate Model"
 			}
 		],
-
 		"commandPalette": [
 			{
 				"command": "extension.simulate",
 				"when": "editorLangId == modest"
 			}
 		],
-		
 		"languages": [
 			{
 				"id": "modest",
@@ -41,9 +39,20 @@
 			{
 				"language": "modest",
 				"scopeName": "source.modest",
-
 				"path": "./syntaxes/modest.tmLanguage.json"
 			}
+		],
+		"configuration": [
+			{
+				"title": "Modest",
+				"properties": {
+					"modest.executableLocation": {
+						"type": "string",
+						"default": "C:\\Program Files\\modest\\modest.exe",
+						"description": "Location of the Modest executable"
+					}
+				}
+			}
 		]
 	},
 	"activationEvents": [

src/commands.ts

+import { pathToFileURL } from 'url';
 import * as vscode from 'vscode';
 
+import * as path from "path";
 export namespace ModestCommands {
 
     const paramHistory: Map<string, string> = new Map();
 
+    function modestExecutable(): string | undefined {
+        let executable: string | undefined =
+            vscode.workspace.getConfiguration("modest").get("executableLocation");
+
+        if (executable === undefined) {
+            vscode.window.showInformationMessage(
+                "It looks like you don't have the modest configurable located yet.", "Go to settings")
+                .then(result => {
+                    //TODO: Figure out how to link to settings.
+                });
+            return;
+        }
+        // Surround any directory with whitespace in quotes
+        return executable.split(path.sep).map(value => value.match(/\s/) ? `"${value}"` : value).join(path.sep);
+    }
+
     export let simCommand = vscode.commands.registerCommand('extension.simulate', async () => {
         //activeTextEditor should never be undefined
         if (vscode.window.activeTextEditor === undefined) {
             return;
         }
 
+        let executable: string | undefined = modestExecutable();
+
+        if (executable === undefined) {
+            return;
+        }
+
+
         var currentFile = vscode.window.activeTextEditor.document.fileName;
         // Show parameter input box
         let parms = await vscode.window.showInputBox({
@@ -25,7 +50,7 @@ export namespace ModestCommands {
 
         // Create a terminal and run the simulation
         let term = vscode.window.createTerminal("Modest simulation");
-        term.sendText(`modest simulate ${currentFile} ${parms}\n`);
+        term.sendText(`${executable} simulate ${currentFile} ${parms}\n`);
         term.show(true);
     });
 }
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