Add first release of AWS plugin

Tools for working with Amazon Web Services:

* Templates for saving a TiddlyWiki as a single JavaScript file in a
ZIP file that can be executed as an AWS Lambda function. In this form,
TiddlyWiki is a self contained single file containing both code and
data, just like the standalone HTML file configuration
* Commands that can be used to interact with AWS services, under both
the Node.js and Lambda configurations of TiddlyWiki

plugins/tiddlywiki/aws/modules/command.js

@@ -0,0 +1,121 @@
+/*\
+title: $:/plugins/tiddlywiki/aws/command.js
+type: application/javascript
+module-type: command
+
+--aws command
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+var async,
+	awsUtils;
+
+exports.info = {
+	name: "aws",
+	synchronous: false
+};
+
+var Command = function(params,commander,callback) {
+	async = require("$:/plugins/tiddlywiki/async/async.js");
+	awsUtils = require("$:/plugins/tiddlywiki/aws/utils.js");
+	this.params = params;
+	this.commander = commander;
+	this.callback = callback;
+};
+
+Command.prototype.execute = function() {
+	var self = this,
+		wiki = this.commander.wiki,
+		subCommand = this.params[0],
+		fn = this.subCommands[subCommand];
+	if(!fn) {
+		return this.callback("AWS: Unknown subcommand")
+	}
+	fn.bind(this)();
+	return null;
+};
+
+Command.prototype.subCommands = {};
+
+// Render a tiddler to an S3 bucket
+Command.prototype.subCommands["s3-rendertiddler"] = function() {
+	var self = this,
+		wiki = this.commander.wiki,
+		title = this.params[1],
+		region = this.params[2],
+		bucket = this.params[3],
+		filename = this.params[4],
+		type = this.params[5] || "text/html",
+		template = this.params[6],
+		zipfilename = this.params[7],
+		saveType = this.params[8] || type,
+		variables = {};
+	// Process the template if present
+	if(template) {
+		variables.currentTiddler = title;
+		title = template;
+	}
+	// Render the tiddler
+	var text = this.commander.wiki.renderTiddler(type,title,{variables: variables}),
+		type = "text/plain",
+		encoding = ($tw.config.contentTypeInfo[type] || {encoding: "utf8"}).encoding;
+	// Zip it if needed
+	if(zipfilename) {
+		var JSZip = require("$:/plugins/tiddlywiki/jszip/jszip.js"),
+			zip = new JSZip();
+		zip.file(filename,new Buffer(text,encoding));
+		text = zip.generate({type: "base64"});
+		type = "application/zip";
+		filename = zipfilename;
+	}
+	// Save the file
+	async.series([
+		awsUtils.putFile.bind(null,region,bucket,filename,text,saveType)
+	],
+	function(err,results){
+		self.callback(err,results);
+	});
+	return null;
+};
+
+// Save a tiddler to an S3 bucket
+Command.prototype.subCommands["s3-savetiddler"] = function() {
+	var self = this,
+		wiki = this.commander.wiki,
+		title = this.params[1],
+		region = this.params[2],
+		bucket = this.params[3],
+		filename = this.params[4],
+		zipfilename = this.params[5],
+		tiddler = wiki.getTiddler(title),
+		text = tiddler.fields.text,
+		type = tiddler.fields.type,
+		encoding = ($tw.config.contentTypeInfo[type] || {encoding: "utf8"}).encoding;
+	// Zip it if needed
+	if(zipfilename) {
+		var JSZip = require("$:/plugins/tiddlywiki/jszip/jszip.js"),
+			zip = new JSZip();
+		zip.file(filename,new Buffer(text,encoding));
+		text = zip.generate({type: "base64"});
+		type = "application/zip";
+		filename = zipfilename;
+	}
+	// Save the file
+	async.series([
+		awsUtils.putFile.bind(null,region,bucket,filename,text,type)
+	],
+	function(err,results){
+		self.callback(err,results);
+	});
+	return null;
+};
+
+exports.Command = Command;
+
+})();
+