twemoji.js

/*jslint indent: 2, browser: true, bitwise: true, plusplus: true */
var twemoji = (function (
  /*! Copyright Twitter Inc. and other contributors. Licensed under MIT *//*
    https://github.com/twitter/twemoji/blob/gh-pages/LICENSE
  */

  // WARNING:   this file is generated automatically via
  //            `node twemoji-generator.js`
  //            please update its `createTwemoji` function
  //            at the bottom of the same file instead.

) {
  'use strict';

  /*jshint maxparams:4 */

  var
    // the exported module object
    twemoji = {


    /////////////////////////
    //      properties     //
    /////////////////////////

      // default assets url, by default will be Twitter Inc. CDN
      base: (location.protocol === 'https:' ? 'https:' : 'http:') +
            '//twemoji.maxcdn.com/',

      // default assets file extensions, by default '.png'
      ext: '.png',

      // default assets/folder size, by default "36x36"
      // available via Twitter CDN: 16, 36, 72
      size: '36x36',

      // default class name, by default 'emoji'
      className: 'emoji',

      // basic utilities / helpers to convert code points
      // to JavaScript surrogates and vice versa
      convert: {

        /**
         * Given an HEX codepoint, returns UTF16 surrogate pairs.
         *
         * @param   string  generic codepoint, i.e. '1F4A9'
         * @return  string  codepoint transformed into utf16 surrogates pair,
         *          i.e. \uD83D\uDCA9
         *
         * @example
         *  twemoji.convert.fromCodePoint('1f1e8');
         *  // "\ud83c\udde8"
         *
         *  '1f1e8-1f1f3'.split('-').map(twemoji.convert.fromCodePoint).join('')
         *  // "\ud83c\udde8\ud83c\uddf3"
         */
        fromCodePoint: fromCodePoint,

        /**
         * Given UTF16 surrogate pairs, returns the equivalent HEX codepoint.
         *
         * @param   string  generic utf16 surrogates pair, i.e. \uD83D\uDCA9
         * @param   string  optional separator for double code points, default='-'
         * @return  string  utf16 transformed into codepoint, i.e. '1F4A9'
         *
         * @example
         *  twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3');
         *  // "1f1e8-1f1f3"
         *
         *  twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3', '~');
         *  // "1f1e8~1f1f3"
         */
        toCodePoint: toCodePoint
      },


    /////////////////////////
    //       methods       //
    /////////////////////////

      /**
       * User first: used to remove missing images
       * preserving the original text intent when
       * a fallback for network problems is desired.
       * Automatically added to Image nodes via DOM
       * It could be recycled for string operations via:
       *  $('img.emoji').on('error', twemoji.onerror)
       */
      onerror: function onerror() {
        if (this.parentNode) {
          this.parentNode.replaceChild(createText(this.alt), this);
        }
      },

      /**
       * Main method/logic to generate either <img> tags or HTMLImage nodes.
       *  "emojify" a generic text or DOM Element.
       *
       * @overloads
       *
       * String replacement for `innerHTML` or server side operations
       *  twemoji.parse(string);
       *  twemoji.parse(string, Function);
       *  twemoji.parse(string, Object);
       *
       * HTMLElement tree parsing for safer operations over existing DOM
       *  twemoji.parse(HTMLElement);
       *  twemoji.parse(HTMLElement, Function);
       *  twemoji.parse(HTMLElement, Object);
       *
       * @param   string|HTMLElement  the source to parse and enrich with emoji.
       *
       *          string              replace emoji matches with <img> tags.
       *                              Mainly used to inject emoji via `innerHTML`
       *                              It does **not** parse the string or validate it,
       *                              it simply replaces found emoji with a tag.
       *                              NOTE: be sure this won't affect security.
       *
       *          HTMLElement         walk through the DOM tree and find emoji
       *                              that are inside **text node only** (nodeType === 3)
       *                              Mainly used to put emoji in already generated DOM
       *                              without compromising surrounding nodes and
       *                              **avoiding** the usage of `innerHTML`.
       *                              NOTE: Using DOM elements instead of strings should
       *                              improve security without compromising too much
       *                              performance compared with a less safe `innerHTML`.
       *
       * @param   Function|Object  [optional]
       *                              either the callback that will be invoked or an object
       *                              with all properties to use per each found emoji.
       *
       *          Function            if specified, this will be invoked per each emoji
       *                              that has been found through the RegExp except
       *                              those follwed by the invariant \uFE0E ("as text").
       *                              Once invoked, parameters will be:
       *
       *                                codePoint:string  the lower case HEX code point
       *                                                  i.e. "1f4a9"
       *
       *                                options:Object    all info for this parsing operation
       *
       *                                variant:char      the optional \uFE0F ("as image")
       *                                                  variant, in case this info
       *                                                  is anyhow meaningful.
       *                                                  By default this is ignored.
       *
       *                              If such callback will return a falsy value instead
       *                              of a valid `src` to use for the image, nothing will
       *                              actually change for that specific emoji.
       *
       *
       *          Object              if specified, an object containing the following properties
       *
       *            callback   Function  the callback to invoke per each found emoji.
       *            base       string    the base url, by default twemoji.base
       *            ext        string    the image extension, by default twemoji.ext
       *            size       string    the assets size, by default twemoji.size
       *
       * @example
       *
       *  twemoji.parse("I \u2764\uFE0F emoji!");
       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji!
       *
       *
       *  twemoji.parse("I \u2764\uFE0F emoji!", function(icon, options, variant) {
       *    return '/assets/' + icon + '.gif';
       *  });
       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji!
       *
       *
       * twemoji.parse("I \u2764\uFE0F emoji!", {
       *   size: 72,
       *   callback: function(icon, options, variant) {
       *     return '/assets/' + options.size + '/' + icon + options.ext;
       *   }
       * });
       *  // I <img class="emoji" draggable="false" alt="❤️" src="/assets/72x72/2764.png"> emoji!
       *
       */
      parse: parse,

      /**
       * Given a string, invokes the callback argument
       *  per each emoji found in such string.
       * This is the most raw version used by
       *  the .parse(string) method itself.
       *
       * @param   string    generic string to parse
       * @param   Function  a generic callback that will be
       *                    invoked to replace the content.
       *                    This calback wil receive standard
       *                    String.prototype.replace(str, callback)
       *                    arguments such:
       *  callback(
       *    match,  // the emoji match
       *    icon,   // the emoji text (same as text)
       *    variant // either '\uFE0E' or '\uFE0F', if present
       *  );
       *
       *                    and others commonly received via replace.
       *
       *  NOTE: When the variant \uFE0E is found, remember this is an explicit intent
       *  from the user: the emoji should **not** be replaced with an image.
       *  In \uFE0F case one, it's the opposite, it should be graphic.
       *  This utility convetion is that only \uFE0E are not translated into images.
       */
      replace: replace,

      /**
       * Simplify string tests against emoji.
       *
       * @param   string  some text that might contain emoji
       * @return  boolean true if any emoji was found, false otherwise.
       *
       * @example
       *
       *  if (twemoji.test(someContent)) {
       *    console.log("emoji All The Things!");
       *  }
       */
      test: test
    },

    // used to escape HTML special chars in attributes
    escaper = {
      '&': '&amp;',
      '<': '&lt;',
      '>': '&gt;',
      "'": '&#39;',
      '"': '&quot;'
    },

    // RegExp based on emoji's official Unicode standards
    // http://www.unicode.org/Public/UNIDATA/EmojiSources.txt
    re = /((?:\ud83c\udde8\ud83c\uddf3|\ud83c\uddfa\ud83c\uddf8|\ud83c\uddf7\ud83c\uddfa|\ud83c\uddf0\ud83c\uddf7|\ud83c\uddef\ud83c\uddf5|\ud83c\uddee\ud83c\uddf9|\ud83c\uddec\ud83c\udde7|\ud83c\uddeb\ud83c\uddf7|\ud83c\uddea\ud83c\uddf8|\ud83c\udde9\ud83c\uddea|\u0039\ufe0f?\u20e3|\u0038\ufe0f?\u20e3|\u0037\ufe0f?\u20e3|\u0036\ufe0f?\u20e3|\u0035\ufe0f?\u20e3|\u0034\ufe0f?\u20e3|\u0033\ufe0f?\u20e3|\u0032\ufe0f?\u20e3|\u0031\ufe0f?\u20e3|\u0030\ufe0f?\u20e3|\u0023\ufe0f?\u20e3|\ud83d\udeb3|\ud83d\udeb1|\ud83d\udeb0|\ud83d\udeaf|\ud83d\udeae|\ud83d\udea6|\ud83d\udea3|\ud83d\udea1|\ud83d\udea0|\ud83d\ude9f|\ud83d\ude9e|\ud83d\ude9d|\ud83d\ude9c|\ud83d\ude9b|\ud83d\ude98|\ud83d\ude96|\ud83d\ude94|\ud83d\ude90|\ud83d\ude8e|\ud83d\ude8d|\ud83d\ude8b|\ud83d\ude8a|\ud83d\ude88|\ud83d\ude86|\ud83d\ude82|\ud83d\ude81|\ud83d\ude36|\ud83d\ude34|\ud83d\ude2f|\ud83d\ude2e|\ud83d\ude2c|\ud83d\ude27|\ud83d\ude26|\ud83d\ude1f|\ud83d\ude1b|\ud83d\ude19|\ud83d\ude17|\ud83d\ude15|\ud83d\ude11|\ud83d\ude10|\ud83d\ude0e|\ud83d\ude08|\ud83d\ude07|\ud83d\ude00|\ud83d\udd67|\ud83d\udd66|\ud83d\udd65|\ud83d\udd64|\ud83d\udd63|\ud83d\udd62|\ud83d\udd61|\ud83d\udd60|\ud83d\udd5f|\ud83d\udd5e|\ud83d\udd5d|\ud83d\udd5c|\ud83d\udd2d|\ud83d\udd2c|\ud83d\udd15|\ud83d\udd09|\ud83d\udd08|\ud83d\udd07|\ud83d\udd06|\ud83d\udd05|\ud83d\udd04|\ud83d\udd02|\ud83d\udd01|\ud83d\udd00|\ud83d\udcf5|\ud83d\udcef|\ud83d\udced|\ud83d\udcec|\ud83d\udcb7|\ud83d\udcb6|\ud83d\udcad|\ud83d\udc6d|\ud83d\udc6c|\ud83d\udc65|\ud83d\udc2a|\ud83d\udc16|\ud83d\udc15|\ud83d\udc13|\ud83d\udc10|\ud83d\udc0f|\ud83d\udc0b|\ud83d\udc0a|\ud83d\udc09|\ud83d\udc08|\ud83d\udc07|\ud83d\udc06|\ud83d\udc05|\ud83d\udc04|\ud83d\udc03|\ud83d\udc02|\ud83d\udc01|\ud83d\udc00|\ud83c\udfe4|\ud83c\udfc9|\ud83c\udfc7|\ud83c\udf7c|\ud83c\udf50|\ud83c\udf4b|\ud83c\udf33|\ud83c\udf32|\ud83c\udf1e|\ud83c\udf1d|\ud83c\udf1c|\ud83c\udf1a|\ud83c\udf18|\ud83c\udccf|\ud83c\udd8e|\ud83c\udd91|\ud83c\udd92|\ud83c\udd93|\ud83c\udd94|\ud83c\udd95|\ud83c\udd96|\ud83c\udd97|\ud83c\udd98|\ud83c\udd99|\ud83c\udd9a|\ud83d\udc77|\ud83d\udec5|\ud83d\udec4|\ud83d\udec3|\ud83d\udec2|\ud83d\udec1|\ud83d\udebf|\ud83d\udeb8|\ud83d\udeb7|\ud83d\udeb5|\ud83c\ude01|\ud83c\ude32|\ud83c\ude33|\ud83c\ude34|\ud83c\ude35|\ud83c\ude36|\ud83c\ude38|\ud83c\ude39|\ud83c\ude3a|\ud83c\ude50|\ud83c\ude51|\ud83c\udf00|\ud83c\udf01|\ud83c\udf02|\ud83c\udf03|\ud83c\udf04|\ud83c\udf05|\ud83c\udf06|\ud83c\udf07|\ud83c\udf08|\ud83c\udf09|\ud83c\udf0a|\ud83c\udf0b|\ud83c\udf0c|\ud83c\udf0f|\ud83c\udf11|\ud83c\udf13|\ud83c\udf14|\ud83c\udf15|\ud83c\udf19|\ud83c\udf1b|\ud83c\udf1f|\ud83c\udf20|\ud83c\udf30|\ud83c\udf31|\ud83c\udf34|\ud83c\udf35|\ud83c\udf37|\ud83c\udf38|\ud83c\udf39|\ud83c\udf3a|\ud83c\udf3b|\ud83c\udf3c|\ud83c\udf3d|\ud83c\udf3e|\ud83c\udf3f|\ud83c\udf40|\ud83c\udf41|\ud83c\udf42|\ud83c\udf43|\ud83c\udf44|\ud83c\udf45|\ud83c\udf46|\ud83c\udf47|\ud83c\udf48|\ud83c\udf49|\ud83c\udf4a|\ud83c\udf4c|\ud83c\udf4d|\ud83c\udf4e|\ud83c\udf4f|\ud83c\udf51|\ud83c\udf52|\ud83c\udf53|\ud83c\udf54|\ud83c\udf55|\ud83c\udf56|\ud83c\udf57|\ud83c\udf58|\ud83c\udf59|\ud83c\udf5a|\ud83c\udf5b|\ud83c\udf5c|\ud83c\udf5d|\ud83c\udf5e|\ud83c\udf5f|\ud83c\udf60|\ud83c\udf61|\ud83c\udf62|\ud83c\udf63|\ud83c\udf64|\ud83c\udf65|\ud83c\udf66|\ud83c\udf67|\ud83c\udf68|\ud83c\udf69|\ud83c\udf6a|\ud83c\udf6b|\ud83c\udf6c|\ud83c\udf6d|\ud83c\udf6e|\ud83c\udf6f|\ud83c\udf70|\ud83c\udf71|\ud83c\udf72|\ud83c\udf73|\ud83c\udf74|\ud83c\udf75|\ud83c\udf76|\ud83c\udf77|\ud83c\udf78|\ud83c\udf79|\ud83c\udf7a|\ud83c\udf7b|\ud83c\udf80|\ud83c\udf81|\ud83c\udf82|\ud83c\udf83|\ud83c\udf84|\ud83c\udf85|\ud83c\udf86|\ud83c\udf87|\ud83c\udf88|\ud83c\udf89|\ud83c\udf8a|\ud83c\udf8b|\ud83c\udf8c|\ud83c\udf8d|\ud83c\udf8e|\ud83c\udf8f|\ud83c\udf90|\ud83c\udf91|\ud83c\udf92|\ud83c\udf93|\ud83c\udfa0|\ud83c\udfa1|\ud83c\udfa2|\ud83c\udfa3|\ud83c\udfa4|\ud83c\udfa5|\ud83c\udfa6|\ud83c\udfa7|\ud83c\udfa8|\ud83c\udfa9|\ud83c\udfaa|\ud83c\udfab|\ud83c\udfac|\ud83c\udfad|\ud83c\udfae|\ud83c\udfaf|\ud83c\udfb0|\ud83c\udfb1|\ud83c\udfb2|\ud83c\udfb3|\ud83c\udfb4|\ud83c\udfb5|\ud83c\udfb6|\ud83c\udfb7|\ud83c\udfb8|\ud83c\udfb9|\ud83c\udfba|\ud83c\udfbb|\ud83c\udfbc|\ud83c\udfbd|\ud83c\udfbe|\ud83c\udfbf|\ud83c\udfc0|\ud83c\udfc1|\ud83c\udfc2|\ud83c\udfc3|\ud83c\udfc4|\ud83c\udfc6|\ud83c\udfc8|\ud83c\udfca|\ud83c\udfe0|\ud83c\udfe1|\ud83c\udfe2|\ud83c\udfe3|\ud83c\udfe5|\ud83c\udfe6|\ud83c\udfe7|\ud83c\udfe8|\ud83c\udfe9|\ud83c\udfea|\ud83c\udfeb|\ud83c\udfec|\ud83c\udfed|\ud83c\udfee|\ud83c\udfef|\ud83c\udff0|\ud83d\udc0c|\ud83d\udc0d|\ud83d\udc0e|\ud83d\udc11|\ud83d\udc12|\ud83d\udc14|\ud83d\udc17|\ud83d\udc18|\ud83d\udc19|\ud83d\udc1a|\ud83d\udc1b|\ud83d\udc1c|\ud83d\udc1d|\ud83d\udc1e|\ud83d\udc1f|\ud83d\udc20|\ud83d\udc21|\ud83d\udc22|\ud83d\udc23|\ud83d\udc24|\ud83d\udc25|\ud83d\udc26|\ud83d\udc27|\ud83d\udc28|\ud83d\udc29|\ud83d\udc2b|\ud83d\udc2c|\ud83d\udc2d|\ud83d\udc2e|\ud83d\udc2f|\ud83d\udc30|\ud83d\udc31|\ud83d\udc32|\ud83d\udc33|\ud83d\udc34|\ud83d\udc35|\ud83d\udc36|\ud83d\udc37|\ud83d\udc38|\ud83d\udc39|\ud83d\udc3a|\ud83d\udc3b|\ud83d\udc3c|\ud83d\udc3d|\ud83d\udc3e|\ud83d\udc40|\ud83d\udc42|\ud83d\udc43|\ud83d\udc44|\ud83d\udc45|\ud83d\udc46|\ud83d\udc47|\ud83d\udc48|\ud83d\udc49|\ud83d\udc4a|\ud83d\udc4b|\ud83d\udc4c|\ud83d\udc4d|\ud83d\udc4e|\ud83d\udc4f|\ud83d\udc50|\ud83d\udc51|\ud83d\udc52|\ud83d\udc53|\ud83d\udc54|\ud83d\udc55|\ud83d\udc56|\ud83d\udc57|\ud83d\udc58|\ud83d\udc59|\ud83d\udc5a|\ud83d\udc5b|\ud83d\udc5c|\ud83d\udc5d|\ud83d\udc5e|\ud83d\udc5f|\ud83d\udc60|\ud83d\udc61|\ud83d\udc62|\ud83d\udc63|\ud83d\udc64|\ud83d\udc66|\ud83d\udc67|\ud83d\udc68|\ud83d\udc69|\ud83d\udc6a|\ud83d\udc6b|\ud83d\udc6e|\ud83d\udc6f|\ud83d\udc70|\ud83d\udc71|\ud83d\udc72|\ud83d\udc73|\ud83d\udc74|\ud83d\udc75|\ud83d\udc76|\ud83d\udeb4|\ud83d\udc78|\ud83d\udc79|\ud83d\udc7a|\ud83d\udc7b|\ud83d\udc7c|\ud83d\udc7d|\ud83d\udc7e|\ud83d\udc7f|\ud83d\udc80|\ud83d\udc81|\ud83d\udc82|\ud83d\udc83|\ud83d\udc84|\ud83d\udc85|\ud83d\udc86|\ud83d\udc87|\ud83d\udc88|\ud83d\udc89|\ud83d\udc8a|\ud83d\udc8b|\ud83d\udc8c|\ud83d\udc8d|\ud83d\udc8e|\ud83d\udc8f|\ud83d\udc90|\ud83d\udc91|\ud83d\udc92|\ud83d\udc93|\ud83d\udc94|\ud83d\udc95|\ud83d\udc96|\ud83d\udc97|\ud83d\udc98|\ud83d\udc99|\ud83d\udc9a|\ud83d\udc9b|\ud83d\udc9c|\ud83d\udc9d|\ud83d\udc9e|\ud83d\udc9f|\ud83d\udca0|\ud83d\udca1|\ud83d\udca2|\ud83d\udca3|\ud83d\udca4|\ud83d\udca5|\ud83d\udca6|\ud83d\udca7|\ud83d\udca8|\ud83d\udca9|\ud83d\udcaa|\ud83d\udcab|\ud83d\udcac|\ud83d\udcae|\ud83d\udcaf|\ud83d\udcb0|\ud83d\udcb1|\ud83d\udcb2|\ud83d\udcb3|\ud83d\udcb4|\ud83d\udcb5|\ud83d\udcb8|\ud83d\udcb9|\ud83d\udcba|\ud83d\udcbb|\ud83d\udcbc|\ud83d\udcbd|\ud83d\udcbe|\ud83d\udcbf|\ud83d\udcc0|\ud83d\udcc1|\ud83d\udcc2|\ud83d\udcc3|\ud83d\udcc4|\ud83d\udcc5|\ud83d\udcc6|\ud83d\udcc7|\ud83d\udcc8|\ud83d\udcc9|\ud83d\udcca|\ud83d\udccb|\ud83d\udccc|\ud83d\udccd|\ud83d\udcce|\ud83d\udccf|\ud83d\udcd0|\ud83d\udcd1|\ud83d\udcd2|\ud83d\udcd3|\ud83d\udcd4|\ud83d\udcd5|\ud83d\udcd6|\ud83d\udcd7|\ud83d\udcd8|\ud83d\udcd9|\ud83d\udcda|\ud83d\udcdb|\ud83d\udcdc|\ud83d\udcdd|\ud83d\udcde|\ud83d\udcdf|\ud83d\udce0|\ud83d\udce1|\ud83d\udce2|\ud83d\udce3|\ud83d\udce4|\ud83d\udce5|\ud83d\udce6|\ud83d\udce7|\ud83d\udce8|\ud83d\udce9|\ud83d\udcea|\ud83d\udceb|\ud83d\udcee|\ud83d\udcf0|\ud83d\udcf1|\ud83d\udcf2|\ud83d\udcf3|\ud83d\udcf4|\ud83d\udcf6|\ud83d\udcf7|\ud83d\udcf9|\ud83d\udcfa|\ud83d\udcfb|\ud83d\udcfc|\ud83d\udd03|\ud83d\udd0a|\ud83d\udd0b|\ud83d\udd0c|\ud83d\udd0d|\ud83d\udd0e|\ud83d\udd0f|\ud83d\udd10|\ud83d\udd11|\ud83d\udd12|\ud83d\udd13|\ud83d\udd14|\ud83d\udd16|\ud83d\udd17|\ud83d\udd18|\ud83d\udd19|\ud83d\udd1a|\ud83d\udd1b|\ud83d\udd1c|\ud83d\udd1d|\ud83d\udd1e|\ud83d\udd1f|\ud83d\udd20|\ud83d\udd21|\ud83d\udd22|\ud83d\udd23|\ud83d\udd24|\ud83d\udd25|\ud83d\udd26|\ud83d\udd27|\ud83d\udd28|\ud83d\udd29|\ud83d\udd2a|\ud83d\udd2b|\ud83d\udd2e|\ud83d\udd2f|\ud83d\udd30|\ud83d\udd31|\ud83d\udd32|\ud83d\udd33|\ud83d\udd34|\ud83d\udd35|\ud83d\udd36|\ud83d\udd37|\ud83d\udd38|\ud83d\udd39|\ud83d\udd3a|\ud83d\udd3b|\ud83d\udd3c|\ud83d\udd3d|\ud83d\udd50|\ud83d\udd51|\ud83d\udd52|\ud83d\udd53|\ud83d\udd54|\ud83d\udd55|\ud83d\udd56|\ud83d\udd57|\ud83d\udd58|\ud83d\udd59|\ud83d\udd5a|\ud83d\udd5b|\ud83d\uddfb|\ud83d\uddfc|\ud83d\uddfd|\ud83d\uddfe|\ud83d\uddff|\ud83d\ude01|\ud83d\ude02|\ud83d\ude03|\ud83d\ude04|\ud83d\ude05|\ud83d\ude06|\ud83d\ude09|\ud83d\ude0a|\ud83d\ude0b|\ud83d\ude0c|\ud83d\ude0d|\ud83d\ude0f|\ud83d\ude12|\ud83d\ude13|\ud83d\ude14|\ud83d\ude16|\ud83d\ude18|\ud83d\ude1a|\ud83d\ude1c|\ud83d\ude1d|\ud83d\ude1e|\ud83d\ude20|\ud83d\ude21|\ud83d\ude22|\ud83d\ude23|\ud83d\ude24|\ud83d\ude25|\ud83d\ude28|\ud83d\ude29|\ud83d\ude2a|\ud83d\ude2b|\ud83d\ude2d|\ud83d\ude30|\ud83d\ude31|\ud83d\ude32|\ud83d\ude33|\ud83d\ude35|\ud83d\ude37|\ud83d\ude38|\ud83d\ude39|\ud83d\ude3a|\ud83d\ude3b|\ud83d\ude3c|\ud83d\ude3d|\ud83d\ude3e|\ud83d\ude3f|\ud83d\ude40|\ud83d\ude45|\ud83d\ude46|\ud83d\ude47|\ud83d\ude48|\ud83d\ude49|\ud83d\ude4a|\ud83d\ude4b|\ud83d\ude4c|\ud83d\ude4d|\ud83d\ude4e|\ud83d\ude4f|\ud83d\ude80|\ud83d\ude83|\ud83d\ude84|\ud83d\ude85|\ud83d\ude87|\ud83d\ude89|\ud83d\ude8c|\ud83d\ude8f|\ud83d\ude91|\ud83d\ude92|\ud83d\ude93|\ud83d\ude95|\ud83d\ude97|\ud83d\ude99|\ud83d\ude9a|\ud83d\udea2|\ud83d\udea4|\ud83d\udea5|\ud83d\udea7|\ud83d\udea8|\ud83d\udea9|\ud83d\udeaa|\ud83d\udeab|\ud83d\udeac|\ud83d\udead|\ud83d\udeb2|\ud83d\udeb6|\ud83d\udeb9|\ud83d\udeba|\ud83d\udebb|\ud83d\udebc|\ud83d\udebd|\ud83d\udebe|\ud83d\udec0|\ud83c\udde6|\ud83c\udde7|\ud83c\udde8|\ud83c\udde9|\ud83c\uddea|\ud83c\uddeb|\ud83c\uddec|\ud83c\udded|\ud83c\uddee|\ud83c\uddef|\ud83c\uddf0|\ud83c\uddf1|\ud83c\uddf2|\ud83c\uddf3|\ud83c\uddf4|\ud83c\uddf5|\ud83c\uddf6|\ud83c\uddf7|\ud83c\uddf8|\ud83c\uddf9|\ud83c\uddfa|\ud83c\uddfb|\ud83c\uddfc|\ud83c\uddfd|\ud83c\uddfe|\ud83c\uddff|\ud83c\udf0d|\ud83c\udf0e|\ud83c\udf10|\ud83c\udf12|\ud83c\udf16|\ud83c\udf17|\ue50a|\u27b0|\u2797|\u2796|\u2795|\u2755|\u2754|\u2753|\u274e|\u274c|\u2728|\u270b|\u270a|\u2705|\u26ce|\u23f3|\u23f0|\u23ec|\u23eb|\u23ea|\u23e9|\u27bf|\u00a9|\u00ae)|(?:(?:\ud83c\udc04|\ud83c\udd70|\ud83c\udd71|\ud83c\udd7e|\ud83c\udd7f|\ud83c\ude02|\ud83c\ude1a|\ud83c\ude2f|\ud83c\ude37|\u3299|\u303d|\u3030|\u2b55|\u2b50|\u2b1c|\u2b1b|\u2b07|\u2b06|\u2b05|\u2935|\u2934|\u27a1|\u2764|\u2757|\u2747|\u2744|\u2734|\u2733|\u2716|\u2714|\u2712|\u270f|\u270c|\u2709|\u2708|\u2702|\u26fd|\u26fa|\u26f5|\u26f3|\u26f2|\u26ea|\u26d4|\u26c5|\u26c4|\u26be|\u26bd|\u26ab|\u26aa|\u26a1|\u26a0|\u2693|\u267f|\u267b|\u3297|\u2666|\u2665|\u2663|\u2660|\u2653|\u2652|\u2651|\u2650|\u264f|\u264e|\u264d|\u264c|\u264b|\u264a|\u2649|\u2648|\u263a|\u261d|\u2615|\u2614|\u2611|\u260e|\u2601|\u2600|\u25fe|\u25fd|\u25fc|\u25fb|\u25c0|\u25b6|\u25ab|\u25aa|\u24c2|\u231b|\u231a|\u21aa|\u21a9|\u2199|\u2198|\u2197|\u2196|\u2195|\u2194|\u2139|\u2122|\u2049|\u203c|\u2668)([\uFE0E\uFE0F]?)))/g,

    // used to find HTML special chars in attributes
    rescaper = /[&<>'"]/g,

    // nodes with type 1 which should **not** be parsed (including lower case svg)
    shouldntBeParsed = /IFRAME|NOFRAMES|NOSCRIPT|SCRIPT|SELECT|STYLE|TEXTAREA|[a-z]/,

    // just a private shortcut
    fromCharCode = String.fromCharCode;

  return twemoji;


  /////////////////////////
  //  private functions  //
  //     declaration     //
  /////////////////////////

  /**
   * Shortcut to create text nodes
   * @param   string  text used to create DOM text node
   * @return  Node  a DOM node with that text
   */
  function createText(text) {
    return document.createTextNode(text);
  }

  /**
   * Utility function to escape html attribute text
   * @param   string  text use in HTML attribute
   * @return  string  text encoded to use in HTML attribute
   */
  function escapeHTML(s) {
    return s.replace(rescaper, replacer);
  }

  /**
   * Default callback used to generate emoji src
   *  based on Twitter CDN
   * @param   string    the emoji codepoint string
   * @param   string    the default size to use, i.e. "36x36"
   * @param   string    optional "\uFE0F" variant char, ignored by default
   * @return  string    the image source to use
   */
  function defaultImageSrcGenerator(icon, options) {
    return ''.concat(options.base, options.size, '/', icon, options.ext);
  }

  /**
   * Given a generic DOM nodeType 1, walk through all children
   * and store every nodeType 3 (#text) found in the tree.
   * @param   Element a DOM Element with probably some text in it
   * @param   Array the list of previously discovered text nodes
   * @return  Array same list with new discovered nodes, if any
   */
  function grabAllTextNodes(node, allText) {
    var
      childNodes = node.childNodes,
      length = childNodes.length,
      subnode,
      nodeType;
    while (length--) {
      subnode = childNodes[length];
      nodeType = subnode.nodeType;
      // parse emoji only in text nodes
      if (nodeType === 3) {
        // collect them to process emoji later
        allText.push(subnode);
      }
      // ignore all nodes that are not type 1 or that
      // should not be parsed as script, style, and others
      else if (nodeType === 1 && !shouldntBeParsed.test(subnode.nodeName)) {
        grabAllTextNodes(subnode, allText);
      }
    }
    return allText;
  }

  /**
   * Used to both remove the possible variant
   *  and to convert utf16 into code points
   * @param   string    the emoji surrogate pair
   * @param   string    the optional variant char, if any
   */
  function grabTheRightIcon(icon, variant) {
    // if variant is present as \uFE0F
    return toCodePoint(
      variant === '\uFE0F' ?
        // the icon should not contain it
        icon.slice(0, -1) :
        // fix non standard OSX behavior
        (icon.length === 3 && icon.charAt(1) === '\uFE0F' ?
          icon.charAt(0) + icon.charAt(2) : icon)
    );
  }

  /**
   * DOM version of the same logic / parser:
   *  emojify all found sub-text nodes placing image nodes instead.
   * @param   Element   generic DOM node with some text in some child node
   * @param   Object    options  containing info about how to parse
    *
    *            .callback   Function  the callback to invoke per each found emoji.
    *            .base       string    the base url, by default twemoji.base
    *            .ext        string    the image extension, by default twemoji.ext
    *            .size       string    the assets size, by default twemoji.size
    *
   * @return  Element same generic node with emoji in place, if any.
   */
  function parseNode(node, options) {
    var
      allText = grabAllTextNodes(node, []),
      length = allText.length,
      attrib,
      attrname,
      modified,
      fragment,
      subnode,
      text,
      match,
      i,
      index,
      img,
      alt,
      icon,
      variant,
      src;
    while (length--) {
      modified = false;
      fragment = document.createDocumentFragment();
      subnode = allText[length];
      text = subnode.nodeValue;
      i = 0;
      while ((match = re.exec(text))) {
        index = match.index;
        if (index !== i) {
          fragment.appendChild(
            createText(text.slice(i, index))
          );
        }
        alt = match[0];
        icon = match[1];
        variant = match[2];
        i = index + alt.length;
        if (variant !== '\uFE0E') {
          src = options.callback(
            grabTheRightIcon(icon, variant),
            options,
            variant
          );
          if (src) {
            img = new Image();
            img.onerror = options.onerror;
            img.setAttribute('draggable', 'false');
            attrib = options.attributes(icon, variant);
            for (attrname in attrib) {
              if (
                attrib.hasOwnProperty(attrname) &&
                // don't allow any handlers to be set + don't allow overrides
                attrname.indexOf('on') !== 0 &&
                !img.hasAttribute(attrname)
              ) {
                img.setAttribute(attrname, attrib[attrname]);
              }
            }
            img.className = options.className;
            img.alt = alt;
            img.src = src;
            modified = true;
            fragment.appendChild(img);
          }
        }
        if (!img) fragment.appendChild(createText(alt));
        img = null;
      }
      // is there actually anything to replace in here ?
      if (modified) {
        // any text left to be added ?
        if (i < text.length) {
          fragment.appendChild(
            createText(text.slice(i))
          );
        }
        // replace the text node only, leave intact
        // anything else surrounding such text
        subnode.parentNode.replaceChild(fragment, subnode);
      }
    }
    return node;
  }

  /**
   * String/HTML version of the same logic / parser:
   *  emojify a generic text placing images tags instead of surrogates pair.
   * @param   string    generic string with possibly some emoji in it
   * @param   Object    options  containing info about how to parse
   *
   *            .callback   Function  the callback to invoke per each found emoji.
   *            .base       string    the base url, by default twemoji.base
   *            .ext        string    the image extension, by default twemoji.ext
   *            .size       string    the assets size, by default twemoji.size
   *
   * @return  the string with <img tags> replacing all found and parsed emoji
   */
  function parseString(str, options) {
    return replace(str, function (match, icon, variant) {
      var
        ret = match,
        attrib,
        attrname,
        src;
      // verify the variant is not the FE0E one
      // this variant means "emoji as text" and should not
      // require any action/replacement
      // http://unicode.org/Public/UNIDATA/StandardizedVariants.html
      if (variant !== '\uFE0E') {
        src = options.callback(
          grabTheRightIcon(icon, variant),
          options,
          variant
        );
        if (src) {
          // recycle the match string replacing the emoji
          // with its image counter part
          ret = '<img '.concat(
            'class="', options.className, '" ',
            'draggable="false" ',
            // needs to preserve user original intent
            // when variants should be copied and pasted too
            'alt="',
            match,
            '"',
            ' src="',
            src,
            '"'
          );
          attrib = options.attributes(icon, variant);
          for (attrname in attrib) { 
            if (
              attrib.hasOwnProperty(attrname) &&
              // don't allow any handlers to be set + don't allow overrides
              attrname.indexOf('on') !== 0 &&
              ret.indexOf(' ' + attrname + '=') === -1
            ) {
              ret = ret.concat(' ', attrname, '="', escapeHTML(attrib[attrname]), '"');
            }
          }
          ret = ret.concat('>');
        }
      }
      return ret;
    });
  }

  /**
   * Function used to actually replace HTML special chars
   * @param   string  HTML special char
   * @return  string  encoded HTML special char
   */
  function replacer(m) {
    return escaper[m];
  }

  /**
   * Default options.attribute callback
   * @return  null
   */
  function returnNull() {
    return null;
  }

  /**
   * Given a generic value, creates its squared counterpart if it's a number.
   *  As example, number 36 will return '36x36'.
   * @param   any     a generic value.
   * @return  any     a string representing asset size, i.e. "36x36"
   *                  only in case the value was a number.
   *                  Returns initial value otherwise.
   */
  function toSizeSquaredAsset(value) {
    return typeof value === 'number' ?
      value + 'x' + value :
      value;
  }


  /////////////////////////
  //  exported functions //
  //     declaration     //
  /////////////////////////

  function fromCodePoint(codepoint) {
    var code = typeof codepoint === 'string' ?
          parseInt(codepoint, 16) : codepoint;
    if (code < 0x10000) {
      return fromCharCode(code);
    }
    code -= 0x10000;
    return fromCharCode(
      0xD800 + (code >> 10),
      0xDC00 + (code & 0x3FF)
    );
  }

  function parse(what, how) {
    if (!how || typeof how === 'function') {
      how = {callback: how};
    }
    // if first argument is string, inject html <img> tags
    // otherwise use the DOM tree and parse text nodes only
    return (typeof what === 'string' ? parseString : parseNode)(what, {
      callback:   how.callback || defaultImageSrcGenerator,
      attributes: typeof how.attributes === 'function' ? how.attributes : returnNull,
      base:       typeof how.base === 'string' ? how.base : twemoji.base,
      ext:        how.ext || twemoji.ext,
      size:       how.folder || toSizeSquaredAsset(how.size || twemoji.size),
      className:  how.className || twemoji.className,
      onerror:    how.onerror || twemoji.onerror
    });
  }

  function replace(text, callback) {
    return String(text).replace(re, callback);
  }

  function test(text) {
    // IE6 needs a reset before too
    re.lastIndex = 0;
    var result = re.test(text);
    re.lastIndex = 0;
    return result;
  }

  function toCodePoint(unicodeSurrogates, sep) {
    var
      r = [],
      c = 0,
      p = 0,
      i = 0;
    while (i < unicodeSurrogates.length) {
      c = unicodeSurrogates.charCodeAt(i++);
      if (p) {
        r.push((0x10000 + ((p - 0xD800) << 10) + (c - 0xDC00)).toString(16));
        p = 0;
      } else if (0xD800 <= c && c <= 0xDBFF) {
        p = c;
      } else {
        r.push(c.toString(16));
      }
    }
    return r.join(sep || '-');
  }

}());