PrismJS · zeitgeist87 · Jan 7, 2016 · May 2, 2016 · May 9, 2016
diff --git a/components.js b/components.js
@@ -625,6 +625,11 @@ var components = {
 			"owner": "zeitgeist87",
 			"after": "unescaped-markup",
 			"noCSS": true
+		},
+		"parse-settings": {
+			"title": "Parse Settings",
+			"owner": "zeitgeist87",
+			"noCSS": true
 		}
 	}
 };
diff --git a/plugins/parse-settings/demo.html b/plugins/parse-settings/demo.html
@@ -0,0 +1,36 @@
+<html>
+<head><base href="../../.." /></head>
+<body data-line-numbers="true" data-spaces-to-tabs="8">
+	<div>
+		<div class="no-line-numbers">
+
+			<pre class="language-javascript line-numbers left-trim"><code>
+			// Example code
+			</code></pre>
+
+		</div>
+	</div>
+	<script src="prism.js"></script>
+	<script src="plugins/parse-settings/prism-parse-settings.js"></script>
+	<script>
+	// my new Prism plugin
+	(function() {
+
+	var specs = {
+		'line-numbers':   { type: 'bool' },
+		'user':           { type: 'string', 'default': 'user' },
+		'host':           { type: 'string', 'default': 'localhost' },
+		'spaces-to-tabs': { type: 'int', 'default': 4 },
+		'left-trim':      { type: 'bool', 'default': true }
+	};
+
+	Prism.plugins.ParseSettings.declare(specs);
+
+	Prism.hooks.add('before-highlight', function (env) {
+		console.log(env.getSettings(specs));
+	});
+
+	}());
+	</script>
+</body>
+</html>
diff --git a/plugins/parse-settings/index.html b/plugins/parse-settings/index.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+
+	<meta charset="utf-8" />
+	<link rel="shortcut icon" href="favicon.png" />
+	<title>Parse Settings ▲ Prism plugins</title>
+	<base href="../.." />
+	<link rel="stylesheet" href="style.css" />
+	<link rel="stylesheet" href="themes/prism.css" data-noprefix />
+	<script src="prefixfree.min.js"></script>
+
+	<script>var _gaq = [['_setAccount', 'UA-33746269-1'], ['_trackPageview']];</script>
+	<script src="http://www.google-analytics.com/ga.js" async></script>
+</head>
+<body>
+
+<header>
+	<div class="intro" data-src="templates/header-plugins.html" data-type="text/html"></div>
+
+	<h2>Parse Settings</h2>
+	<p>Automatically parses settings for other plugins</p>
+</header>
+
+<section class="language-markup">
+	<h1>How to use</h1>
+
+	<p>This plugin is not intended to be used on its own.
+	It is a support plugin for other plugins and only included as a dependency.</p>
+
+	<p>All ancestors of the current element are automatically scanned for
+	<code>data-*</code>-attributes and classes. These attributes and classes are then
+	parsed into key-value pairs. An element can inherit the <code>data-*</code>-attributes from its ancestors.</p>
+
+	<p>The plugin author has to declare the settings the plugin uses. The syntax should be self-explanatory
+	and is demonstrated with the following example:</p>
+
+	<pre class="language-javascript"><code>Prism.plugins.ParseSettings.declare({
+	'line-numbers':   { type: 'bool' },
+	'user':           { type: 'string', 'default': 'user' },
+	'host':           { type: 'string', 'default': 'localhost' },
+	'spaces-to-tabs': { type: 'int', 'default': 4 },
+	'left-trim':      { type: 'bool', 'default': true }
+});
+	</code></pre>
+
+	<p>The following conventions are used to parse the settings:</p>
+
+	<ul class="language-javascript">
+		<li>A normal class name <code>{ 'class-name': true }</code></li>
+		<li>A class name starting with "no-" <code>{ 'class-name': false }</code></li>
+		<li>A boolean setting with the string "true" <code>{ 'attr-name': true }</code></li>
+		<li>A boolean setting with the string "false" <code>{ 'attr-name': false }</code></li>
+		<li>Integers and floats are converted into their respective types <code>{ 'attr-name': 4.4 }</code></li>
+	</ul>
+
+</section>
+
+<section class="language-markup">
+	<h1>Example</h1>
+
+	<pre data-src="plugins/parse-settings/demo.html"></pre>
+</section>
+
+<footer data-src="templates/footer.html" data-type="text/html"></footer>
+
+<script src="prism.js"></script>
+<script src="plugins/parse-settings/prism-parse-settings.js"></script>
+<script src="utopia.js"></script>
+<script src="components.js"></script>
+<script src="code.js"></script>
+
+
+</body>
+</html>
diff --git a/plugins/parse-settings/prism-parse-settings.js b/plugins/parse-settings/prism-parse-settings.js
@@ -0,0 +1,97 @@
+(function() {
+
+if (typeof self === 'undefined' || !self.Prism || !self.document) {
+	return;
+}
+
+var assign = Object.assign || function (obj1, obj2) {
+	for (var name in obj2) {
+		if (obj2.hasOwnProperty(name))
+			obj1[name] = obj2[name];
+	}
+	return obj1;
+}
+
+var specs = {},
+    reloadSettings = false;
+
+Prism.plugins.ParseSettings = {
+	declare: function(pluginSpecs) {
+		assign(specs, pluginSpecs);
+		reloadSettings = true;
+	}
+};
+
+function loadSettings(parent) {
+	var settings = {};
+
+	do {
+		for (var i = 0, attrs = parent.attributes; i < attrs.length; ++i) {
+			var name = attrs[i].nodeName,
+			    val = attrs[i].nodeValue;
+
+			if (name === 'class') {
+				for (var j = 0, classes = val.split(/\s+/); j < classes.length; ++j) {
+					name = classes[j];
+					if (name.indexOf('no-') === 0) {
+						name = name.substring(3);
+						if (specs[name])
+							settings[name] = false;
+					} else {
+						if (specs[name])
+							settings[name] = true;
+					}
+				}
+			} else if (name.indexOf('data-') === 0) {
+				name = name.substring(5);
+				if (specs[name])
+					settings[name] = val;
+			}
+		}
+	} while ((parent = parent.parentNode) && parent.hasAttribute);
+
+	return settings;
+}
+
+function applySpecs(settings, specs) {
+	var out = {};
+
+	for (var name in specs) {
+		var spec = specs[name] || {},
+		    value = settings[name] || spec['default'];
+
+		switch(spec.type) {
+		case 'int':
+			value = parseInt(value);
+			break;
+		case 'boolean':
+		case 'bool':
+			value = (value === 'false' || value === 'no') ? false : (value === '') ? true : !!value;
+			break;
+		case 'number':
+		case 'float':
+			value = parseFloat(value);
+			break;
+		}
+
+		if (value || value === false || value === 0) {
+			out[name] = value;
+		}
+	}
+
+	return out;
+}
+
+function getSettings(pluginSpecs) {
+	if (reloadSettings) {
+		this.rawSettings = loadSettings(this.element);
+	}
+
+	return applySpecs(this.rawSettings || {}, pluginSpecs || specs);
+}
+
+Prism.hooks.add('before-highlight', function (env) {
+	env.getSettings = getSettings;
+});
+
+}());
diff --git a/plugins/parse-settings/prism-parse-settings.min.js b/plugins/parse-settings/prism-parse-settings.min.js