define(function () { /*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 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 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 ❤️ emoji! * * * twemoji.parse("I \u2764\uFE0F emoji!", function(icon, options, variant) { * return '/assets/' + icon + '.gif'; * }); * // I ❤️ emoji! * * * twemoji.parse("I \u2764\uFE0F emoji!", { * size: 72, * callback: function(icon, options, variant) { * return '/assets/' + options.size + '/' + icon + options.ext; * } * }); * // I ❤️ 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 }, // RegExp based on emoji's official Unicode standards // http://www.unicode.org/Public/UNIDATA/EmojiSources.txt re = 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|\u2754|\u2753|\u274e|\u274c|\u2728|\u270b|\u270a|\u2705|\u26ce|\u23f3|\u23f0|\u23ec|\u23eb|\u23ea|\u23e9|\u2122|\u27bf|\u00a9|\u00ae)|(?:(?:\ud83c\udc04|\ud83c\udd7f|\ud83c\ude1a|\ud83c\ude2f|\u3299|\u303d|\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|\u2049|\u203c|\u2668)([\uFE0E\uFE0F]?)))/g, // nodes with type 1 which should **not** be parsed shouldntBeParsed = /IFRAME|NOFRAMES|NOSCRIPT|SCRIPT|SELECT|STYLE|TEXTAREA/, // 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); } /** * 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 images node 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, 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 = twemoji.onerror; img.className = options.className; img.setAttribute('draggable', 'false'); 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 replacing all found and parsed emoji */ function parseString(str, options) { return replace(str, function (match, icon, variant) { var 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 match = '' ); } } return match; }); } /** * 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 tags // otherwise use the DOM tree and parse text nodes only return (typeof what === 'string' ? parseString : parseNode)(what, { callback: how.callback || defaultImageSrcGenerator, 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 }); } 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 || '-'); } }()); return twemoji; });