NodeWebKitSaver

/*\
title: NodeWebKitSaver.js
type: application/javascript
module-type: saver

Handles saving changes via node.js in the browser (node-webkit).

\*/
(function(){

/*jslint node: true, browser: true */
/*global $tw: false, netscape: false, Components: false */
"use strict";

var NodeWebKitSaver = function(wiki) {
	try{
		this.fs = require("fs");
	} catch (exc) {
		//console.log(exc);
		this.fs = null;
	}
};

NodeWebKitSaver.prototype.save = function(text,method,callback) {
	//var messageBox = document.getElementById("tiddlyfox-message-box");
	//console.log(process.version);
	if(this.fs) {
		// Get the pathname of this document
		var pathname = document.location.toString().split("#")[0];
		// Replace file://localhost/ with file:///
		if(pathname.indexOf("file://localhost/") === 0) {
			pathname = "file://" + pathname.substr(16);
		}
		// Windows path file:///x:/blah/blah --> x:\blah\blah
		if(/^file\:\/\/\/[A-Z]\:\//i.test(pathname)) {
			// Remove the leading slash and convert slashes to backslashes
			pathname = pathname.substr(8).replace(/\//g,"\\");
		// Firefox Windows network path file://///server/share/blah/blah --> //server/share/blah/blah
		} else if(pathname.indexOf("file://///") === 0) {
			pathname = "\\\\" + unescape(pathname.substr(10)).replace(/\//g,"\\");
		// Mac/Unix local path file:///path/path --> /path/path
		} else if(pathname.indexOf("file:///") === 0) {
			pathname = unescape(pathname.substr(7));
		// Mac/Unix local path file:/path/path --> /path/path
		} else if(pathname.indexOf("file:/") === 0) {
			pathname = unescape(pathname.substr(5));
		// Otherwise Windows networth path file://server/share/path/path --> \\server\share\path\path
		} else {
			pathname = "\\\\" + unescape(pathname.substr(7)).replace(new RegExp("/","g"),"\\");
		}
		this.fs.writeFile(decodeURIComponent(pathname), text, function (err) {
			//if (err) throw err;
			//console.log('NodeWebKitSaver', err);
			callback(err);
		});
		return true;
	} else {
		return false;
	}
};

/*
Information about this saver
*/
NodeWebKitSaver.prototype.info = {
	name: "nodewebkit",
	priority: 1500,
	capabilities: ["save", "autosave"]
};

/*
Static method that returns true if this saver is capable of working.
It will only work with the 'file' protocol and only if node.js is available.
*/
exports.canSave = function(wiki) {
	//console.log(window.location.protocol);
	return (window.location.protocol === "file:");
};

/*
Create an instance of this saver
*/
exports.create = function(wiki) {
	return new NodeWebKitSaver(wiki);
};

})();