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+/*!
+ * markdown-it-regexp
+ * Copyright (c) 2014 Alex Kocharin
+ * MIT Licensed
+ */
+
+var inherits = function(ctor, superCtor) {
+ ctor.super_ = superCtor;
+ ctor.prototype = Object.create(superCtor.prototype, {
+ constructor: {
+ value: ctor,
+ enumerable: false,
+ writable: true,
+ configurable: true
+ }
+ });
+};
+
+/**
+ * Escape special characters in the given string of html.
+ *
+ * Borrowed from escape-html component, MIT-licensed
+ */
+var stuff = {};
+stuff.escape = function(html) {
+ return String(html)
+ .replace(/&/g, '&')
+ .replace(/"/g, '"')
+ .replace(/'/g, ''')
+ .replace(/</g, '&lt;')
+ .replace(/>/g, '&gt;')
+}
+
+Object.setPrototypeOf = Object.setPrototypeOf || function (obj, proto) {
+ if (!isIE9()) {
+ obj.__proto__ = proto;
+ } else {
+ /** IE9 fix - copy object methods from the protype to the new object **/
+ for (var prop in proto) {
+ obj[prop] = proto[prop];
+ }
+ }
+
+ return obj;
+};
+
+var isIE9 = function() {
+ return navigator.appVersion.indexOf("MSIE") > 0;
+};
+
+/**
+ * Counter for multi usage.
+ */
+var counter = 0
+
+/**
+ * Constructor function
+ */
+
+function Plugin(regexp, replacer) {
+ // return value should be a callable function
+ // with strictly defined options passed by markdown-it
+ var self = function (md, options) {
+ self.options = options
+ self.init(md)
+ }
+
+ // initialize plugin object
+ Object.setPrototypeOf(self, Plugin.prototype)
+
+ // clone regexp with all the flags
+ var flags = (regexp.global ? 'g' : '')
+ + (regexp.multiline ? 'm' : '')
+ + (regexp.ignoreCase ? 'i' : '')
+
+ self.regexp = RegExp('^' + regexp.source, flags)
+
+ // copy init options
+ self.replacer = replacer
+
+ // this plugin can be inserted multiple times,
+ // so we're generating unique name for it
+ self.id = 'regexp-' + counter
+ counter++
+
+ return self
+}
+
+inherits(Plugin, Function)
+
+// function that registers plugin with markdown-it
+Plugin.prototype.init = function (md) {
+ md.inline.ruler.push(this.id, this.parse.bind(this))
+
+ md.renderer.rules[this.id] = this.render.bind(this)
+}
+
+Plugin.prototype.parse = function (state, silent) {
+ // slowwww... maybe use an advanced regexp engine for this
+ var match = this.regexp.exec(state.src.slice(state.pos))
+ if (!match) return false
+
+ // valid match found, now we need to advance cursor
+ state.pos += match[0].length
+
+ // don't insert any tokens in silent mode
+ if (silent) return true
+
+ var token = state.push(this.id, '', 0)
+ token.meta = { match: match }
+
+ return true
+}
+
+Plugin.prototype.render = function (tokens, id, options, env) {
+ return this.replacer(tokens[id].meta.match, stuff)
+}