Add WTF-8 encoder/decoder

wtf-8/README.md

@@ -0,0 +1,5 @@
+# [UTF-8 encoder/decoder](https://mothereff.in/utf-8)
+
+This tool automatically encodes any string you enter. It can also decode valid UTF-8 input. It uses [utf8.js](https://mths.be/utf8js) under the hood.
+
+Made by [Mathias Bynens](https://mathiasbynens.be/).

wtf-8/eff.css

@@ -0,0 +1,87 @@
+html, textarea {
+	font: 1em/1.6 sans-serif;
+}
+
+body {
+	max-width: 40em;
+	padding: 0 1em;
+}
+
+h1 {
+	text-align: center;
+	font-size: 1.3em;
+	margin: 0 0 .5em;
+	padding-top: 1em;
+}
+
+h2 {
+	font-size: 1em;
+}
+
+a {
+	color: #333;
+	text-decoration: none;
+	border-bottom: 1px solid #aaa;
+	padding: .1em .2em;
+}
+
+a:hover, a:focus {
+	color: #fff;
+	border-color: #036;
+	background: #36c;
+}
+
+textarea {
+	font-family: Monaco, Consolas, monospace;
+}
+
+#footer {
+	margin-top: 2em;
+	text-align: center;
+}
+
+textarea {
+	border: 3px double green;
+	background: #90ee90;
+	width: 100%;
+	-moz-box-sizing: border-box;
+	-webkit-box-sizing: border-box;
+	box-sizing: border-box;
+	display: block;
+	margin: 1em 0 .5em;
+	padding: .7em;
+	resize: vertical;
+	min-height: 9.5em;
+}
+
+code {
+	font-family: Monaco, Consolas, monospace;
+	font-size: .9em;
+	white-space: pre;
+	white-space: pre-wrap;
+	word-wrap: break-word;
+}
+
+.invalid, :invalid {
+	border-color: red;
+	background: #ffb6c1;
+}
+
+@media (min-width: 42em) {
+
+	html {
+		font-size: 1.2em;
+		background: #c4c4c4;
+		height: 100%;
+	}
+
+	body {
+		margin: 0 auto;
+		padding: 0 2em;
+		min-height: 100%;
+		background: #fff;
+		border: solid #aaa;
+		border-width: 0 1px;
+	}
+
+}

wtf-8/eff.js

@@ -0,0 +1,92 @@
+(function(window, document) {
+
+	var textareas = document.getElementsByTagName('textarea'),
+	    decoded = textareas[0],
+	    encoded = textareas[1],
+	    permalink = document.getElementById('permalink'),
+	    // https://mathiasbynens.be/notes/localstorage-pattern
+	    storage = (function() {
+	    	var uid = new Date,
+	    	    storage,
+	    	    result;
+	    	try {
+	    		(storage = window.localStorage).setItem(uid, uid);
+	    		result = storage.getItem(uid) == uid;
+	    		storage.removeItem(uid);
+	    		return result && storage;
+	    	} catch(e) {}
+	    }()),
+	    stringFromCharCode = String.fromCharCode;
+
+	function encode(string) {
+		// URL-encode some more characters to avoid issues when using permalink URLs in Markdown
+		return encodeURIComponent(string).replace(/['()_*]/g, function(character) {
+			return '%' + character.charCodeAt().toString(16);
+		});
+	}
+
+	function hexEscape(string) {
+		var length = string.length;
+		var index = -1;
+		var result = '';
+		var hex;
+		while (++index < length) {
+			hex = string.charCodeAt(index).toString(16).toUpperCase();
+			result += '\\x' + ('00' + hex).slice(-2);
+		}
+		return result;
+	}
+
+	function update() {
+		var shouldDecode = this == encoded;
+		var value;
+		if (shouldDecode) {
+			try {
+				value = wtf8.decode(eval('\'' + encoded.value + '\''));
+				decoded.value = value;
+				decoded.className = encoded.className = '';
+			} catch (exception) {
+				decoded.value = 'ERROR: invalid input';
+				decoded.className = encoded.className = 'invalid';
+			}
+		} else {
+			value = wtf8.encode(decoded.value);
+			encoded.value = hexEscape(value);
+			decoded.className = encoded.className = '';
+		}
+		value = decoded.value;
+		permalink.hash = encode(value);
+		storage && (storage.wtf8 = value);
+	};
+
+	// https://mathiasbynens.be/notes/oninput
+	decoded.onkeyup = encoded.onkeyup = update;
+	decoded.oninput = encoded.oninput = function() {
+		decoded.onkeyup = encoded.onkeyup = null;
+		update.call(this);
+	};
+
+	if (storage) {
+		storage.wtf8 && (decoded.value = storage.wtf8);
+		update();
+	}
+
+	window.onhashchange = function() {
+		decoded.value = decodeURIComponent(location.hash.slice(1));
+		update();
+	};
+
+	if (location.hash) {
+		window.onhashchange();
+	}
+
+}(this, document));
+
+// Google Analytics
+window._gaq = [['_setAccount', 'UA-6065217-60'], ['_trackPageview']];
+(function(d, t) {
+	var g = d.createElement(t),
+	    s = d.getElementsByTagName(t)[0];
+	g.src = '//www.google-analytics.com/ga.js';
+	s.parentNode.insertBefore(g, s);
+}(document, 'script'));

wtf-8/index.html

@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html lang=en>
+<meta charset=utf-8>
+<title>WTF-8 encoder/decoder</title>
+<meta name=viewport content="width=device-width,initial-scale=1">
+<link rel=stylesheet href=eff.css>
+<meta name=description content="An online, on-the-fly WTF-8 encoder/decoder.">
+<h1>WTF-8 encoder/decoder</h1>
+<noscript><strong>To use this tool, please <a href=http://enable-javascript.com/>enable JavaScript</a> and reload the page.</strong></noscript>
+<h2>WTF-8-decoded:</h2>
+<textarea autofocus>Foo © bar 𝌆 baz ☃ qux</textarea>
+<h2>WTF-8-encoded: (<a href=#Foo%20%C2%A9%20bar%20%F0%9D%8C%86%20baz%20%E2%98%83%20qux id=permalink>permalink</a>)</h2>
+<textarea>\x46\x6F\x6F\x20\xC2\xA9\x20\x62\x61\x72\x20\xF0\x9D\x8C\x86\x20\x62\x61\x7A\x20\xE2\x98\x83\x20\x71\x75\x78</textarea>
+<h2>About this tool</h2>
+<p>This tool uses <a href=https://mths.be/wtf8>wtf-8</a> to <a href=https://simonsapin.github.io/wtf-8/>WTF-8-encode</a> any string you enter in the ‘decoded’ field, or to decode any WTF-8-encoded string you enter in the ‘encoded’ field.
+<p id=footer>Made by <a href=https://mathiasbynens.be/>@mathias</a> — <a href=https://github.com/mathiasbynens/mothereff.in/tree/master/wtf-8>fork this on GitHub!</a></p>
+<script src=vendor/wtf-8.js></script>
+<script src=eff.js></script>

wtf-8/vendor/update.sh

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+cd "$(dirname "${BASH_SOURCE}")"
+
+curl -# "https://raw.githubusercontent.com/mathiasbynens/wtf-8/master/wtf-8.js" > wtf-8.js
+
+cat "wtf-8.js" "../eff.js" > "/tmp/wt-eff-8.js"
+echo "Copying concatenated JS to pasteboard..."
+pbcopy < "/tmp/wt-eff-8.js"