From 490c2d20475e8b16136422d3d426b84abb828a23 Mon Sep 17 00:00:00 2001
From: Patrick McDermott <pj@pehjota.net>
Date: Tue, 31 Oct 2017 04:09:44 -0400
Subject: data/resources/prism/: Import from upstream, HEAD of branch gh-pages

---
(limited to 'data/resources/prism/components/prism-core.js')

diff --git a/data/resources/prism/components/prism-core.js b/data/resources/prism/components/prism-core.js
new file mode 100644
index 0000000..f34bcae
--- /dev/null
+++ b/data/resources/prism/components/prism-core.js
@@ -0,0 +1,529 @@
+var _self = (typeof window !== 'undefined')
+	? window   // if in browser
+	: (
+		(typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope)
+		? self // if in worker
+		: {}   // if in node js
+	);
+
+/**
+ * Prism: Lightweight, robust, elegant syntax highlighting
+ * MIT license http://www.opensource.org/licenses/mit-license.php/
+ * @author Lea Verou http://lea.verou.me
+ */
+
+var Prism = (function(){
+
+// Private helper vars
+var lang = /\blang(?:uage)?-(\w+)\b/i;
+var uniqueId = 0;
+
+var _ = _self.Prism = {
+	manual: _self.Prism && _self.Prism.manual,
+	util: {
+		encode: function (tokens) {
+			if (tokens instanceof Token) {
+				return new Token(tokens.type, _.util.encode(tokens.content), tokens.alias);
+			} else if (_.util.type(tokens) === 'Array') {
+				return tokens.map(_.util.encode);
+			} else {
+				return tokens.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/\u00a0/g, ' ');
+			}
+		},
+
+		type: function (o) {
+			return Object.prototype.toString.call(o).match(/\[object (\w+)\]/)[1];
+		},
+
+		objId: function (obj) {
+			if (!obj['__id']) {
+				Object.defineProperty(obj, '__id', { value: ++uniqueId });
+			}
+			return obj['__id'];
+		},
+
+		// Deep clone a language definition (e.g. to extend it)
+		clone: function (o) {
+			var type = _.util.type(o);
+
+			switch (type) {
+				case 'Object':
+					var clone = {};
+
+					for (var key in o) {
+						if (o.hasOwnProperty(key)) {
+							clone[key] = _.util.clone(o[key]);
+						}
+					}
+
+					return clone;
+
+				case 'Array':
+					return o.map(function(v) { return _.util.clone(v); });
+			}
+
+			return o;
+		}
+	},
+
+	languages: {
+		extend: function (id, redef) {
+			var lang = _.util.clone(_.languages[id]);
+
+			for (var key in redef) {
+				lang[key] = redef[key];
+			}
+
+			return lang;
+		},
+
+		/**
+		 * Insert a token before another token in a language literal
+		 * As this needs to recreate the object (we cannot actually insert before keys in object literals),
+		 * we cannot just provide an object, we need anobject and a key.
+		 * @param inside The key (or language id) of the parent
+		 * @param before The key to insert before. If not provided, the function appends instead.
+		 * @param insert Object with the key/value pairs to insert
+		 * @param root The object that contains `inside`. If equal to Prism.languages, it can be omitted.
+		 */
+		insertBefore: function (inside, before, insert, root) {
+			root = root || _.languages;
+			var grammar = root[inside];
+
+			if (arguments.length == 2) {
+				insert = arguments[1];
+
+				for (var newToken in insert) {
+					if (insert.hasOwnProperty(newToken)) {
+						grammar[newToken] = insert[newToken];
+					}
+				}
+
+				return grammar;
+			}
+
+			var ret = {};
+
+			for (var token in grammar) {
+
+				if (grammar.hasOwnProperty(token)) {
+
+					if (token == before) {
+
+						for (var newToken in insert) {
+
+							if (insert.hasOwnProperty(newToken)) {
+								ret[newToken] = insert[newToken];
+							}
+						}
+					}
+
+					ret[token] = grammar[token];
+				}
+			}
+
+			// Update references in other language definitions
+			_.languages.DFS(_.languages, function(key, value) {
+				if (value === root[inside] && key != inside) {
+					this[key] = ret;
+				}
+			});
+
+			return root[inside] = ret;
+		},
+
+		// Traverse a language definition with Depth First Search
+		DFS: function(o, callback, type, visited) {
+			visited = visited || {};
+			for (var i in o) {
+				if (o.hasOwnProperty(i)) {
+					callback.call(o, i, o[i], type || i);
+
+					if (_.util.type(o[i]) === 'Object' && !visited[_.util.objId(o[i])]) {
+						visited[_.util.objId(o[i])] = true;
+						_.languages.DFS(o[i], callback, null, visited);
+					}
+					else if (_.util.type(o[i]) === 'Array' && !visited[_.util.objId(o[i])]) {
+						visited[_.util.objId(o[i])] = true;
+						_.languages.DFS(o[i], callback, i, visited);
+					}
+				}
+			}
+		}
+	},
+	plugins: {},
+
+	highlightAll: function(async, callback) {
+		var env = {
+			callback: callback,
+			selector: 'code[class*="language-"], [class*="language-"] code, code[class*="lang-"], [class*="lang-"] code'
+		};
+
+		_.hooks.run("before-highlightall", env);
+
+		var elements = env.elements || document.querySelectorAll(env.selector);
+
+		for (var i=0, element; element = elements[i++];) {
+			_.highlightElement(element, async === true, env.callback);
+		}
+	},
+
+	highlightElement: function(element, async, callback) {
+		// Find language
+		var language, grammar, parent = element;
+
+		while (parent && !lang.test(parent.className)) {
+			parent = parent.parentNode;
+		}
+
+		if (parent) {
+			language = (parent.className.match(lang) || [,''])[1].toLowerCase();
+			grammar = _.languages[language];
+		}
+
+		// Set language on the element, if not present
+		element.className = element.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;
+
+		// Set language on the parent, for styling
+		parent = element.parentNode;
+
+		if (/pre/i.test(parent.nodeName)) {
+			parent.className = parent.className.replace(lang, '').replace(/\s+/g, ' ') + ' language-' + language;
+		}
+
+		var code = element.textContent;
+
+		var env = {
+			element: element,
+			language: language,
+			grammar: grammar,
+			code: code
+		};
+
+		_.hooks.run('before-sanity-check', env);
+
+		if (!env.code || !env.grammar) {
+			if (env.code) {
+				_.hooks.run('before-highlight', env);
+				env.element.textContent = env.code;
+				_.hooks.run('after-highlight', env);
+			}
+			_.hooks.run('complete', env);
+			return;
+		}
+
+		_.hooks.run('before-highlight', env);
+
+		if (async && _self.Worker) {
+			var worker = new Worker(_.filename);
+
+			worker.onmessage = function(evt) {
+				env.highlightedCode = evt.data;
+
+				_.hooks.run('before-insert', env);
+
+				env.element.innerHTML = env.highlightedCode;
+
+				callback && callback.call(env.element);
+				_.hooks.run('after-highlight', env);
+				_.hooks.run('complete', env);
+			};
+
+			worker.postMessage(JSON.stringify({
+				language: env.language,
+				code: env.code,
+				immediateClose: true
+			}));
+		}
+		else {
+			env.highlightedCode = _.highlight(env.code, env.grammar, env.language);
+
+			_.hooks.run('before-insert', env);
+
+			env.element.innerHTML = env.highlightedCode;
+
+			callback && callback.call(element);
+
+			_.hooks.run('after-highlight', env);
+			_.hooks.run('complete', env);
+		}
+	},
+
+	highlight: function (text, grammar, language) {
+		var tokens = _.tokenize(text, grammar);
+		return Token.stringify(_.util.encode(tokens), language);
+	},
+
+	matchGrammar: function (text, strarr, grammar, index, startPos, oneshot, target) {
+		var Token = _.Token;
+
+		for (var token in grammar) {
+			if(!grammar.hasOwnProperty(token) || !grammar[token]) {
+				continue;
+			}
+
+			if (token == target) {
+				return;
+			}
+
+			var patterns = grammar[token];
+			patterns = (_.util.type(patterns) === "Array") ? patterns : [patterns];
+
+			for (var j = 0; j < patterns.length; ++j) {
+				var pattern = patterns[j],
+					inside = pattern.inside,
+					lookbehind = !!pattern.lookbehind,
+					greedy = !!pattern.greedy,
+					lookbehindLength = 0,
+					alias = pattern.alias;
+
+				if (greedy && !pattern.pattern.global) {
+					// Without the global flag, lastIndex won't work
+					var flags = pattern.pattern.toString().match(/[imuy]*$/)[0];
+					pattern.pattern = RegExp(pattern.pattern.source, flags + "g");
+				}
+
+				pattern = pattern.pattern || pattern;
+
+				// Don’t cache length as it changes during the loop
+				for (var i = index, pos = startPos; i < strarr.length; pos += strarr[i].length, ++i) {
+
+					var str = strarr[i];
+
+					if (strarr.length > text.length) {
+						// Something went terribly wrong, ABORT, ABORT!
+						return;
+					}
+
+					if (str instanceof Token) {
+						continue;
+					}
+
+					pattern.lastIndex = 0;
+
+					var match = pattern.exec(str),
+					    delNum = 1;
+
+					// Greedy patterns can override/remove up to two previously matched tokens
+					if (!match && greedy && i != strarr.length - 1) {
+						pattern.lastIndex = pos;
+						match = pattern.exec(text);
+						if (!match) {
+							break;
+						}
+
+						var from = match.index + (lookbehind ? match[1].length : 0),
+						    to = match.index + match[0].length,
+						    k = i,
+						    p = pos;
+
+						for (var len = strarr.length; k < len && (p < to || (!strarr[k].type && !strarr[k - 1].greedy)); ++k) {
+							p += strarr[k].length;
+							// Move the index i to the element in strarr that is closest to from
+							if (from >= p) {
+								++i;
+								pos = p;
+							}
+						}
+
+						/*
+						 * If strarr[i] is a Token, then the match starts inside another Token, which is invalid
+						 * If strarr[k - 1] is greedy we are in conflict with another greedy pattern
+						 */
+						if (strarr[i] instanceof Token || strarr[k - 1].greedy) {
+							continue;
+						}
+
+						// Number of tokens to delete and replace with the new match
+						delNum = k - i;
+						str = text.slice(pos, p);
+						match.index -= pos;
+					}
+
+					if (!match) {
+						if (oneshot) {
+							break;
+						}
+
+						continue;
+					}
+
+					if(lookbehind) {
+						lookbehindLength = match[1].length;
+					}
+
+					var from = match.index + lookbehindLength,
+					    match = match[0].slice(lookbehindLength),
+					    to = from + match.length,
+					    before = str.slice(0, from),
+					    after = str.slice(to);
+
+					var args = [i, delNum];
+
+					if (before) {
+						++i;
+						pos += before.length;
+						args.push(before);
+					}
+
+					var wrapped = new Token(token, inside? _.tokenize(match, inside) : match, alias, match, greedy);
+
+					args.push(wrapped);
+
+					if (after) {
+						args.push(after);
+					}
+
+					Array.prototype.splice.apply(strarr, args);
+
+					if (delNum != 1)
+						_.matchGrammar(text, strarr, grammar, i, pos, true, token);
+
+					if (oneshot)
+						break;
+				}
+			}
+		}
+	},
+
+	tokenize: function(text, grammar, language) {
+		var strarr = [text];
+
+		var rest = grammar.rest;
+
+		if (rest) {
+			for (var token in rest) {
+				grammar[token] = rest[token];
+			}
+
+			delete grammar.rest;
+		}
+
+		_.matchGrammar(text, strarr, grammar, 0, 0, false);
+
+		return strarr;
+	},
+
+	hooks: {
+		all: {},
+
+		add: function (name, callback) {
+			var hooks = _.hooks.all;
+
+			hooks[name] = hooks[name] || [];
+
+			hooks[name].push(callback);
+		},
+
+		run: function (name, env) {
+			var callbacks = _.hooks.all[name];
+
+			if (!callbacks || !callbacks.length) {
+				return;
+			}
+
+			for (var i=0, callback; callback = callbacks[i++];) {
+				callback(env);
+			}
+		}
+	}
+};
+
+var Token = _.Token = function(type, content, alias, matchedStr, greedy) {
+	this.type = type;
+	this.content = content;
+	this.alias = alias;
+	// Copy of the full string this token was created from
+	this.length = (matchedStr || "").length|0;
+	this.greedy = !!greedy;
+};
+
+Token.stringify = function(o, language, parent) {
+	if (typeof o == 'string') {
+		return o;
+	}
+
+	if (_.util.type(o) === 'Array') {
+		return o.map(function(element) {
+			return Token.stringify(element, language, o);
+		}).join('');
+	}
+
+	var env = {
+		type: o.type,
+		content: Token.stringify(o.content, language, parent),
+		tag: 'span',
+		classes: ['token', o.type],
+		attributes: {},
+		language: language,
+		parent: parent
+	};
+
+	if (o.alias) {
+		var aliases = _.util.type(o.alias) === 'Array' ? o.alias : [o.alias];
+		Array.prototype.push.apply(env.classes, aliases);
+	}
+
+	_.hooks.run('wrap', env);
+
+	var attributes = Object.keys(env.attributes).map(function(name) {
+		return name + '="' + (env.attributes[name] || '').replace(/"/g, '&quot;') + '"';
+	}).join(' ');
+
+	return '<' + env.tag + ' class="' + env.classes.join(' ') + '"' + (attributes ? ' ' + attributes : '') + '>' + env.content + '</' + env.tag + '>';
+
+};
+
+if (!_self.document) {
+	if (!_self.addEventListener) {
+		// in Node.js
+		return _self.Prism;
+	}
+ 	// In worker
+	_self.addEventListener('message', function(evt) {
+		var message = JSON.parse(evt.data),
+		    lang = message.language,
+		    code = message.code,
+		    immediateClose = message.immediateClose;
+
+		_self.postMessage(_.highlight(code, _.languages[lang], lang));
+		if (immediateClose) {
+			_self.close();
+		}
+	}, false);
+
+	return _self.Prism;
+}
+
+//Get current script and highlight
+var script = document.currentScript || [].slice.call(document.getElementsByTagName("script")).pop();
+
+if (script) {
+	_.filename = script.src;
+
+	if (!_.manual && !script.hasAttribute('data-manual')) {
+		if(document.readyState !== "loading") {
+			if (window.requestAnimationFrame) {
+				window.requestAnimationFrame(_.highlightAll);
+			} else {
+				window.setTimeout(_.highlightAll, 16);
+			}
+		}
+		else {
+			document.addEventListener('DOMContentLoaded', _.highlightAll);
+		}
+	}
+}
+
+return _self.Prism;
+
+})();
+
+if (typeof module !== 'undefined' && module.exports) {
+	module.exports = Prism;
+}
+
+// hack for components to work correctly in node.js
+if (typeof global !== 'undefined') {
+	global.Prism = Prism;
+}
--
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