Merge branch 'master' into insert-mode

Conflicts:
	test/scanner.test.ts

README.md

@@ -1,12 +1,13 @@
-# Vim
+[![Build Status](https://travis-ci.org/VSCodeVim/Vim.svg?branch=master)](https://travis-ci.org/VSCodeVim/Vim) [![Build status](https://ci.appveyor.com/api/projects/status/0t6ljij7g5h0ddx8?svg=true)](https://ci.appveyor.com/project/guillermooo/vim)
 
-[![Build Status](https://travis-ci.org/VSCodeVim/Vim.svg?branch=master)](https://travis-ci.org/VSCodeVim/Vim)
+# Vim
 
-Vim for Visual Studio Code. *Coming Soon!* :gift:
+Vim emulation for Visual Studio Code. *Coming Soon!* :gift:
 
 ## Contributing
 
 ... would be awesome! Take a look at [Extension API](https://code.visualstudio.com/docs/extensionAPI/overview) on how to get started.
 
 ## License
+
 [MIT](LICENSE.txt)

src/cmd_line/command_node.ts

@@ -1,28 +1,79 @@
-import * as vscode from 'vscode';
-import * as node from './node';
-import * as util from '../util';
+import fs = require('fs');
+
+import vscode = require('vscode');
+
+import node = require('./node');
+import util = require('../util');
+
+export interface WriteCommandArguments {
+	opt? : string;
+	optValue? : string;
+	bang? : boolean;
+	range? : node.LineRange;
+	file? : string;
+	append? : boolean;
+	cmd? : string;
+}
 
 //
 //  Implements :write
 //  http://vimdoc.sourceforge.net/htmldoc/editing.html#:write
 //
 export class WriteCommand implements node.CommandBase {
-    name : string;
-    shortName : string;
-    args : Object;
-
-    constructor(args : Object = null) {
-        // TODO: implement other arguments.
-        this.name = 'write';
-        this.shortName = 'w';
-        this.args = args;
-    }
-
-    runOn(textEditor : vscode.TextEditor) : void {
-        if (this.args) {
-            util.showError("Not implemented.");
-            return;
-        }
-        textEditor.document.save();
-    }
+	name : string;
+	shortName : string;
+	args : WriteCommandArguments;
+
+	constructor(args : WriteCommandArguments = {}) {
+		this.name = 'write';
+		this.shortName = 'w';
+		this.args = args;
+	}
+
+	private doSave(textEditor : vscode.TextEditor) {
+		textEditor.document.save().then(
+			(ok) => {
+				if (ok) {
+					util.showInfo("File saved.");
+				} else {
+					util.showError("File not saved.");
+				}
+			},
+			(e) => util.showError(e)
+		);
+	};
+
+	runOn(textEditor : vscode.TextEditor) : void {
+		if (this.args.opt) {
+			util.showError("Not implemented.");
+			return;
+		} else if (this.args.file) {
+			util.showError("Not implemented.");
+			return;
+		} else if (this.args.append) {
+			util.showError("Not implemented.");
+			return;
+		} else if (this.args.cmd) {
+			util.showError("Not implemented.");
+			return;
+		}
+
+		fs.access(textEditor.document.fileName, fs.W_OK, (accessErr) => {
+			if (accessErr) {
+				if (this.args.bang) {
+					fs.chmod(textEditor.document.fileName, 666, (e) => {
+						if (e) {
+							util.showError(e.message);
+						} else {
+							this.doSave(textEditor);
+						}
+					});
+				} else {
+					util.showError(accessErr.message);
+				}
+			} else {
+				this.doSave(textEditor);
+			}
+		});
+	}
 }