Adding a number of work-in-progress packages. Some data structures built on top of the key-value store and an http client, among others.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3310 ed5197a5-7fde-0310-b194-c3ffbd925b24

packages/cory/await/await.js

@@ -0,0 +1,31 @@
+"use strict";
+
+//! {"category": "tests"}
+
+async function main() {
+	terminal.print("Hi.  What's your name?");
+	let name = await terminal.readLine();
+	terminal.print("Hello, " + name + ".");
+
+	let number = Math.floor(Math.random() * 100);
+	let guesses = 0;
+	while (true) {
+		terminal.print("Guess the number.");
+		try {
+			let guess = parseInt(await terminal.readLine());
+			guesses++;
+			if (guess < number) {
+				terminal.print("Too low.");
+			} else if (guess > number) {
+				terminal.print("Too high.");
+			} else {
+				terminal.print("You got it in " + guesses.toString() + " guesses!  It was " + number.toString() + ".  Good job, " + name + ".");
+				break;
+			}
+		} catch (error) {
+			terminal.print(error);
+		}
+	}
+}
+
+main().catch(terminal.print);

packages/cory/blog/blog.js

@@ -50,17 +50,20 @@ class Blog {
 	async submitPost(post) {
 		let now = new Date();
 		let oldPost = await this._documents.get(post.name);
-		if (!oldPost) {
-			post.created = now;
-			post.author = core.user.name;
+		if (!await this._list.getByKey(post.name)) {
 			this._list.push(post.name);
-		} else {
-			for (let key in oldPost) {
-				if (!post[key]) {
-					post[key] = oldPost[key];
-				}
+		}
+		for (let key in oldPost) {
+			if (!post[key]) {
+				post[key] = oldPost[key];
 			}
 		}
+		if (!post.created) {
+			post.created = now;
+		}
+		if (!post.author) {
+			post.author = core.user.name;
+		}
 		post.modified = now;
 		await this._documents.set(post.name, post);
 	}

packages/cory/hello/hello.js

@@ -0,0 +1,5 @@
+"use strict";
+
+//! {"category": "tests"}
+
+terminal.print("Hello, world!");

packages/cory/libdocument/libdocument.js

@@ -0,0 +1,106 @@
+"use strict";
+
+// A document store.
+
+//! {"category": "libraries"}
+
+class DocumentStore {
+	constructor(prefix) {
+		this._prefix = prefix;
+	}
+
+	async _get(name) {
+		let node;
+		try {
+			node = JSON.parse(await database.get(this._prefix + ":node:" + JSON.stringify(name)));
+		} catch (error) {
+			node = {version: null};
+		}
+		return node;
+	}
+
+	async _addKey(name) {
+		let list = JSON.parse(await database.get(this._prefix + ":keys") || "[]");
+		if (list.indexOf(name) == -1) {
+			list.push(name);
+			list.sort();
+		}
+		await database.set(this._prefix + ":keys", JSON.stringify(list));
+	}
+
+	async _removeKey(name) {
+		let list = JSON.parse(await database.get(this._prefix + ":keys") || "[]");
+		let index = list.indexOf(name);
+		if (index != -1) {
+			list.splice(index, 1);
+		}
+		await database.set(this._prefix + ":keys", JSON.stringify(list));
+	}
+
+	async set(name, value) {
+		let node = await this._get(name);
+		let version = (node.version || 0) + 1;
+		await database.set(this._prefix + ":version:" + JSON.stringify(name) + ":" + version.toString(), JSON.stringify(value));
+		node.deleted = value == undefined;
+		node.version = version;
+		await database.set(this._prefix + ":node:" + JSON.stringify(name), JSON.stringify(node));
+		if (node.deleted) {
+			await this._removeKey(name);
+		} else {
+			await this._addKey(name);
+		}
+	}
+
+	async get(name, version) {
+		let queryVersion = version || (await this._get(name)).version || 0;
+		let value = await database.get(this._prefix + ":version:" + JSON.stringify(name) + ":" + queryVersion.toString());
+		return value ? JSON.parse(value) : undefined;
+	}
+
+	async getAll() {
+		return JSON.parse(await database.get(this._prefix + ":keys") || "[]");
+	}
+
+	async setVersion(name, version, value) {
+		await database.set(this._prefix + ":version:" + JSON.stringify(name) + ":" + version.toString(), JSON.stringify(value));
+	}
+}
+
+async function dump() {
+	terminal.print("Dumping everything.");
+	let keys = await database.getAll();
+	for (let key in keys) {
+		terminal.print(keys[key], " = ", await database.get(keys[key]));
+		database.remove(keys[key]);
+	}
+}
+
+async function test() {
+	terminal.print("Running a test.");
+	let ds = new DocumentStore("cory");
+	await ds.set("cory", 1);
+	await ds.set("cory", 2);
+	await ds.set("cory", 3);
+	terminal.print((await ds.get("cory")).toString());
+	await ds.set("alice", "hello, world!");
+	terminal.print(await ds.get("alice"));
+	terminal.print(JSON.stringify(await ds.getAll()));
+	await ds.set("cory", null);
+	terminal.print(JSON.stringify(await ds.getAll()));
+	terminal.print((await ds.get("cory", 2)).toString());
+	terminal.print("Done.");
+}
+
+if (imports.terminal) {
+	//dump().then(test).then(dump).catch(terminal.print);
+}
+
+exports.DocumentStore = function(name) {
+	let ds = new DocumentStore(name);
+	return {
+		get: ds.get.bind(ds),
+		set: ds.set.bind(ds),
+		getAll: ds.getAll.bind(ds),
+		setVersion: ds.setVersion.bind(ds),
+	};
+}

packages/cory/libhttp/libhttp.js

@@ -0,0 +1,65 @@
+"use strict";
+
+//! {"permissions": ["network"]}
+
+function parseUrl(url) {
+	// XXX: Hack.
+	var match = url.match(new RegExp("(\\w+)://([^/]+)?(.*)"));
+	return {
+		protocol: match[1],
+		host: match[2],
+		path: match[3],
+		port: match[1] == "http" ? 80 : 443,
+	};
+}
+
+function parseResponse(data) {
+	var firstLine;
+	var headers = {};
+
+	while (true) {
+		var endLine = data.indexOf("\r\n");
+		var line = data.substring(0, endLine);
+		if (!firstLine) {
+			firstLine = line;
+		} else if (!line.length) {
+			break;
+		} else {
+			var colon = line.indexOf(":");
+			headers[line.substring(0, colon).toLowerCase()] = line.substring(colon + 1).trim();
+		}
+		data = data.substring(endLine + 2);
+	}
+	return {body: data, headers: headers};
+}
+
+function get(url) {
+	return new Promise(async function(resolve, reject) {
+		try {
+			let parsed = parseUrl(url);
+			let buffer = "";
+
+			let socket = await network.newConnection();
+
+			await socket.connect(parsed.host, parsed.port);
+			socket.read(function(data) {
+				if (data) {
+					buffer += data;
+				} else {
+					resolve(parseResponse(buffer));
+				}
+			});
+
+			if (parsed.port == 443) {
+				await socket.startTls();
+			}
+
+			socket.write(`GET ${parsed.path} HTTP/1.0\r\nHost: ${parsed.host}\r\nConnection: close\r\n\r\n`);
+			//socket.close();
+		} catch(error) {
+			reject(error);
+		}
+	});
+}
+
+exports.get = get;

packages/cory/liblist/liblist.js

@@ -0,0 +1,307 @@
+//! {"category": "libraries"}
+
+"use strict";
+
+class DatabaseList {
+	constructor(name) {
+		this._prefix = name;
+	}
+
+	async _insert(item, end, desiredKey) {
+		let key = this._prefix + ":head";
+		let listNode = await database.get(key);
+		if (!listNode) {
+			await database.set(key, JSON.stringify({next: key, previous: key, value: item, count: 1, nextId: 1, key: desiredKey}));
+		} if (listNode) {
+			listNode = JSON.parse(listNode);
+			listNode.count++;
+			let id = desiredKey;
+			if (id && await database.get(this._prefix + ":node:" + id.toString())) {
+				throw new Error("Key '" + desiredKey + "' already exists.");
+			}
+			if (!id) {
+				id = listNode.nextId++;
+			}
+			if (end) {
+				let newKey = this._prefix + ":node:" + id.toString();
+				await database.set(newKey, JSON.stringify({next: key, previous: listNode.previous, value: item}));
+
+				if (listNode.previous !== key) {
+					let previous = JSON.parse(await database.get(listNode.previous));
+					previous.next = newKey;
+					await database.set(listNode.previous, JSON.stringify(previous));
+
+					listNode.previous = newKey;
+					await database.set(key, JSON.stringify(listNode));
+				} else {
+					listNode.previous = newKey;
+					listNode.next = newKey;
+					await database.set(key, JSON.stringify(listNode));
+				}
+			} else {
+				let newKey = listNode.key || id.toString();
+				await database.set(newKey, JSON.stringify({next: listNode.next, previous: key, value: listNode.value}));
+				listNode.value = item;
+				listNode.key = id;
+
+				if (listNode.next !== key) {
+					let next = JSON.parse(await database.get(listNode.next));
+					next.previous = newKey;
+					await database.set(listNode.next, JSON.stringify(next));
+
+					listNode.next = newKey;
+					await database.set(key, JSON.stringify(listNode));
+				} else {
+					listNode.previous = newKey;
+					listNode.next = newKey;
+					await database.set(key, JSON.stringify(listNode));
+				}
+			}
+		}
+	}
+
+	async _remove(end) {
+		let key = this._prefix + ":head";
+		let listNode = await database.get(key);
+		let result;
+		if (listNode) {
+			listNode = JSON.parse(listNode);
+			listNode.count--;
+			if (end) {
+				if (listNode.previous === key) {
+					await database.remove(key);
+					result = listNode.value;
+				} else {
+					let removeKey = listNode.previous;
+					let previous = JSON.parse(await database.get(listNode.previous));
+					result = previous.value;
+					if (previous.previous !== key) {
+						let previousPrevious = JSON.parse(await database.get(previous.previous));
+						previousPrevious.next = key;
+						listNode.previous = previous.previous;
+						await database.set(previous.previous, JSON.stringify(previousPrevious));
+						await database.set(key, JSON.stringify(listNode));
+						await database.remove(removeKey);
+					} else {
+						listNode.next = key;
+						listNode.previous = key;
+						await database.set(key, JSON.stringify(listNode));
+						await database.remove(removeKey);
+					}
+				}
+			} else {
+				result = listNode.value;
+				if (listNode.next === key) {
+					await database.remove(key);
+				} else {
+					let removeKey = listNode.next;
+					let next = JSON.parse(await database.get(listNode.next));
+					listNode.value = next.value;
+					if (next.next !== key) {
+						let nextNext = JSON.parse(await database.get(next.next));
+						nextNext.previous = key;
+						listNode.next = next.next;
+						await database.set(next.next, JSON.stringify(nextNext));
+						await database.set(key, JSON.stringify(listNode));
+						await database.remove(removeKey);
+					} else {
+						listNode.next = key;
+						listNode.previous = key;
+						await database.set(key, JSON.stringify(listNode));
+						await database.remove(removeKey);
+					}
+				}
+			}
+		}
+		return result;
+	}
+
+	push(item, key) {
+		return this._insert(item, true, key);
+	}
+
+	unshift(item, key) {
+		return this._insert(item, false, key);
+	}
+
+	pop() {
+		return this._remove(true);
+	}
+
+	shift() {
+		return this._remove(false);
+	}
+
+	async get(offset, count) {
+		const head = this._prefix + ":head";
+		let key = head;
+		let result = [];
+
+		while (offset) {
+			let node = await database.get(key);
+			if (!node) {
+				break;
+			}
+			node = JSON.parse(node);
+			if (offset > 0) {
+				key = node.next;
+				offset--;
+			} else if (offset < 0) {
+				key = node.previous;
+				offset++;
+			}
+		}
+
+		while (count) {
+			let node = await database.get(key);
+			if (!node) {
+				break;
+			}
+			node = JSON.parse(node);
+			result.push(node.value);
+			if (count > 0) {
+				key = node.next;
+				if (key == head) {
+					break;
+				}
+				count--;
+			} else if (count < 0) {
+				key = node.previous;
+				count++;
+				if (key == head) {
+					count = -1;
+				}
+			}
+		}
+
+		return result;
+	}
+
+	async getByKey(key) {
+		let value = await database.get(this._prefix + ":node:" + key.toString());
+		if (value !== undefined) {
+			value = JSON.parse(value);
+		} else {
+			let node = await database.get(this._prefix + ":head");
+			if (node !== undefined) {
+				node = JSON.parse(node);
+				if (node.key == key) {
+					value = node;
+				}
+			}
+		}
+		return value;
+	}
+
+	async setByKey(key, value) {
+		let node = await database.get(this._prefix + ":head");
+		let done = false;
+		if (node !== undefined) {
+			node = JSON.parse(node);
+			if (node.key == key) {
+				node.value = value;
+				await database.set(this._prefix + ":head", JSON.stringify(node));
+				done = true;
+			}
+		}
+
+		if (!done) {
+			node = JSON.parse(await database.get(this._prefix + ":node:" + key));
+			node.value = value;
+			await database.set(this._prefix + ":node:" + key, JSON.stringify(node));
+			done = true;
+		}
+	}
+}
+
+function wipeDatabase() {
+	let promises = [];
+	return database.getAll().then(function(list) {
+		for (let i = 0; i < list.length; i++) {
+			promises.push(database.remove(list[i]));
+		}
+	});
+	return Promise.all(promises);
+}
+
+async function dumpDatabase() {
+	for (let key of await database.getAll()) {
+		let value = await database.get(key);
+		try {
+			value = JSON.parse(value);
+		} catch (error) {
+			// eh
+		}
+		terminal.print("DUMP: ", key, " ", JSON.stringify(value, 0, 2));
+	}
+}
+
+/*async function test() {
+	let x = new DatabaseList("list");
+	await x.push("1");
+	await x.push("2");
+	await x.push("3");
+	await dumpDatabase();
+	terminal.print(await x.get(0, 10));
+	terminal.print(await x.get(-1, -10));
+	terminal.print(await x.pop());
+	terminal.print(await x.pop());
+	terminal.print(await x.pop());
+	await dumpDatabase();
+	await x.unshift("1");
+	await x.unshift("2");
+	await x.unshift("3");
+	await dumpDatabase();
+	await x.push("cory", "coryKey");
+	await x.push("yo", "yoKey");
+	terminal.print(await x.get(0, 10));
+	terminal.print(await x.shift());
+	terminal.print(await x.shift());
+	terminal.print(await x.shift());
+	await dumpDatabase();
+}*/
+
+if (imports.terminal) {
+	//wipeDatabase();
+	//dumpDatabase().then(wipeDatabase).then(test).catch(terminal.print);
+	/*let x = new DatabaseList("list");
+	core.register("onInput", function(input) {
+		if (input == "clear") {
+			wipeDatabase().then(function() {
+				terminal.print("Database is now empty.");
+			});
+		} else if (input.substring(0, "push ".length) == "push ") {
+			x.push(input.substring("push ".length)).then(dumpDatabase).catch(terminal.print);
+		} else if (input.substring(0, "unshift ".length) == "unshift ") {
+			x.unshift(input.substring("unshift ".length)).then(dumpDatabase).catch(terminal.print);
+		} else if (input == "pop") {
+			x.pop().then(function(out) {
+				terminal.print("POPPED: ", out);
+			}).then(dumpDatabase).catch(terminal.print);
+		} else if (input == "shift") {
+			x.shift().then(function(out) {
+				terminal.print("SHIFTED: ", out);
+			}).then(dumpDatabase).catch(terminal.print);
+		} else if (input.substring(0, "get ".length) == "get ") {
+			let parts = input.split(" ");
+			x.get(parseInt(parts[1])).then(function(result) {
+				terminal.print(JSON.stringify(result))
+			}).catch(terminal.print);
+		} else {
+			dumpDatabase();
+		}
+	});*/
+}
+
+exports.ListStore = function(name) {
+	let ls = new DatabaseList(name);
+	return {
+		push: ls.push.bind(ls),
+		pop: ls.pop.bind(ls),
+		shift: ls.shift.bind(ls),
+		unshift: ls.unshift.bind(ls),
+		get: ls.get.bind(ls),
+		getByKey: ls.getByKey.bind(ls),
+		setByKey: ls.setByKey.bind(ls),
+	};
+}

packages/cory/libxml/libxml.js

@@ -0,0 +1,254 @@
+"use strict";
+
+//! { "category": "libraries" }
+
+function xmlEncode(text) {
+	return text.replace(/([\&"'<>])/g, function(x, item) {
+		return {'&': '&amp;', '"': '&quot;', '<': '&lt;', '>': '&gt;', "'": '&apos;'}[item];
+	});
+}
+function xmlDecode(xml) {
+	return xml.replace(/(&quot;|&lt;|&gt;|&amp;|&apos;)/g, function(x, item) {
+		return {'&amp;': '&', '&quot;': '"', '&lt;': '<', '&gt;': '>', '&apos;': "'"}[item];
+	});
+}
+
+function XmlStreamParser() {
+	this.buffer = "";
+	this._parsed = [];
+	this.reset();
+	return this;
+}
+
+XmlStreamParser.kText = "text";
+XmlStreamParser.kElement = "element";
+XmlStreamParser.kEndElement = "endElement";
+XmlStreamParser.kAttributeName = "attributeName";
+XmlStreamParser.kAttributeValue = "attributeValue";
+
+XmlStreamParser.prototype.reset = function() {
+	this._state = XmlStreamParser.kText;
+	this._attributes = {};
+	this._attributeName = "";
+	this._attributeValue = "";
+	this._attributeEquals = false;
+	this._attributeQuote = "";
+	this._slash = false;
+	this._value = "";
+	this._decl = false;
+}
+
+XmlStreamParser.prototype.parse = function(data) {
+	this._parsed = [];
+
+	for (var i = 0; i < data.length; i++) {
+		var c = data.charAt(i);
+		this.parseCharacter(c);
+	}
+
+	return this._parsed;
+}
+
+XmlStreamParser.prototype.flush = function() {
+	var node = {type: this._state};
+	if (this._value) {
+		node.value = xmlDecode(this._value);
+	}
+	if (this._attributes.length || this._state == XmlStreamParser.kElement) {
+		node.attributes = this._attributes;
+	}
+	if (this._state != XmlStreamParser.kText || this._value) {
+		this.emit(node);
+	}
+	this.reset();
+}
+
+XmlStreamParser.prototype.parseCharacter = function(c) {
+	switch (this._state) {
+	case XmlStreamParser.kText:
+		if (c == '<') {
+			this.flush();
+			this._state = XmlStreamParser.kElement;
+		} else {
+			this._value += c;
+		}
+		break;
+	case XmlStreamParser.kElement:
+	case XmlStreamParser.kEndElement:
+		switch (c) {
+		case '>':
+			this.finishElement();
+			break;
+		case '/':
+			if (!this._value) {
+				this._state = XmlStreamParser.kEndElement;
+			} else if (!this._slash) {
+				this._slash = true;
+			} else {
+				this._value += c;
+			}
+			break;
+		case '?':
+			if (!this._value) {
+				this._decl = true;
+			} else {
+				this._value += '?';
+			}
+			break;
+		case ' ':
+		case '\t':
+		case '\r':
+		case '\n':
+			this._state = XmlStreamParser.kAttributeName;
+			break;
+		default:
+			if (this._slash) {
+				this._slash = false;
+				this._value += '/';
+			}
+			this._value += c;
+			break;
+		}
+		break;
+	case XmlStreamParser.kAttributeName:
+		switch (c) {
+		case ' ':
+		case '\t':
+		case '\r':
+		case '\n':
+			if (this._attributeName) {
+				this._state = XmlStreamParser.kAttributeValue;
+			}
+			break;
+		case '/':
+			if (!this._slash) {
+				this._slash = true;
+			} else {
+				this._value += '/';
+			}
+			break;
+		case '=':
+			this._state = XmlStreamParser.kAttributeValue;
+			break;
+		case '>':
+			if (this._attributeName) {
+				this._attributes[this._attributeName] = null;
+			}
+			this._state = XmlStreamParser.kElement;
+			this.finishElement();
+			break;
+		default:
+			this._attributeName += c;
+			break;
+		}
+		break;
+	case XmlStreamParser.kAttributeValue:
+		switch (c) {
+		case ' ':
+		case '\t':
+		case '\r':
+		case '\n':
+			if (this._attributeValue) {
+				this._state = XmlStreamParser.kAttributeName;
+			}
+			break;
+		case '"':
+		case "'":
+			if (!this._attributeValue && !this._attributeQuote) {
+				this._attributeQuote = c;
+			} else if (this._attributeQuote == c) {
+				this._attributes[this._attributeName] = this._attributeValue;
+				this._attributeName = "";
+				this._attributeValue = "";
+				this._attributeQuote = "";
+				this._state = XmlStreamParser.kAttributeName;
+			} else {
+				this._attributeValue += c;
+			}
+			break;
+		case '>':
+			this.finishElement();
+			break;
+		default:
+			this._attributeValue += c;
+			break;
+		}
+		break;
+	}
+}
+
+XmlStreamParser.prototype.finishElement = function() {
+	if (this._decl) {
+		this.reset();
+	} else {
+		var value = this._value;
+		var slash = this._slash;
+		this.flush();
+		if (slash) {
+			this._state = XmlStreamParser.kEndElement;
+			this._value = value;
+			this.flush();
+		}
+	}
+	this._state = XmlStreamParser.kText;
+}
+
+XmlStreamParser.prototype.emit = function(node) {
+	this._parsed.push(node);
+}
+
+function XmlStanzaParser(depth) {
+	this._depth = depth || 0;
+	this._parsed = [];
+	this._stack = [];
+	this._stream = new XmlStreamParser();
+	return this;
+}
+
+XmlStanzaParser.prototype.reset = function() {
+	this._parsed = [];
+	this._stack = [];
+	this._stream.reset();
+}
+
+XmlStanzaParser.prototype.emit = function(stanza) {
+	this._parsed.push(stanza);
+}
+
+XmlStanzaParser.prototype.parse = function(data) {
+	this._parsed = [];
+	var nodes = this._stream.parse(data);
+	for (var i = 0; i < nodes.length; i++) {
+		this.parseNode(nodes[i]);
+	}
+	return this._parsed;
+}
+
+XmlStanzaParser.prototype.parseNode = function(node) {
+	switch (node.type) {
+	case XmlStreamParser.kElement:
+		this._stack.push({name: node.value, attributes: node.attributes, children: [], text: ""});
+		break;
+	case XmlStreamParser.kEndElement:
+		if (this._stack.length == 1 + this._depth) {
+			this.emit(this._stack.pop());
+		} else {
+			var last = this._stack.pop();
+			this._stack[this._stack.length - 1].children.push(last);
+		}
+		break;
+	case XmlStreamParser.kText:
+		if (this._stack && this._stack.length) {
+			this._stack[this._stack.length - 1].text += node.value;
+		}
+		break;
+	}
+}
+
+exports.StanzaParser = function(depth) {
+	let parser = new XmlStanzaParser(depth);
+	return {
+		parse: parser.parse.bind(parser),
+		reset: parser.reset.bind(parser),
+	};
+}

packages/cory/news/news.js

@@ -0,0 +1,78 @@
+"use strict";
+
+//! {"require": ["libhttp", "liblist", "libxml"], "permissions": ["network"]}
+
+let http = require("libhttp");
+let liblist = require("liblist");
+let xml = require("libxml");
+
+function parseNews(response) {
+	let news = {items: []};
+	let nodes = xml.StanzaParser().parse(response.body);
+	for (let node0 of nodes) {
+		if (node0.name == "rss") {
+			for (let node1 of node0.children) {
+				if (node1.name == "channel") {
+					for (let node2 of node1.children) {
+						if (node2.name == "item") {
+							let item = {};
+							for (let node3 of node2.children) {
+								item[node3.name] = node3.text;
+							}
+							news.items.push(item);
+						}
+					}
+				}
+			}
+		}
+	}
+	return news;
+}
+
+async function fetchNews(url) {
+	let response;
+	let retries = 5;
+	while (retries--) {
+		response = await http.get(url);
+		if (response.headers.location) {
+			url = response.headers.location;
+		} else {
+			break;
+		}
+	}
+	return response;
+}
+
+async function storeNews(url, news) {
+	let listStore = liblist.ListStore(url);
+	for (let item of news.items) {
+		let id = item.guid || item.link;
+		if (await listStore.getByKey(id) !== undefined) {
+			await listStore.setByKey(id, item);
+			terminal.print("SET ", id);
+		} else {
+			await listStore.push(item, id);
+			terminal.print("PUSH ", id);
+		}
+	}
+}
+
+function loadNews(url) {
+	return liblist.ListStore(url).get(0, 10);
+}
+
+async function test(url) {
+	await wipeDatabase();
+	await dumpDatabase();
+	let response = await fetchNews(url);
+	let news = parseNews(response);
+	await storeNews(url, news);
+	await storeNews(url, news);
+	terminal.print("That's the news for today:");
+	terminal.print(JSON.stringify(await loadNews(url), 0, 2));
+	terminal.print("Keys:");
+	terminal.print(JSON.stringify(await database.getAll(), 0, 2));
+	await dumpDatabase();
+}
+
+test("http://www.unprompted.com/rss").catch(terminal.print);