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twemoji.amd.js
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twemoji.amd.js
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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',
// 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
},
// RegExp based on emoji's official Unicode standards
// http://www.unicode.org/Public/UNIDATA/EmojiSources.txt
re = 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df7c|\ud83c\udfc7|\ud83c\udfc9|\ud83c\udfe4|\ud83d\udc00|\ud83d\udc01|\ud83d\udc02|\ud83d\udc03|\ud83d\udc04|\ud83d\udc05|\ud83d\udc06|\ud83d\udc07|\ud83d\udc08|\ud83d\udc09|\ud83d\udc0a|\ud83d\udc0b|\ud83d\udc0f|\ud83d\udc10|\ud83d\udc13|\ud83d\udc15|\ud83d\udc16|\ud83d\udc2a|\ud83d\udc65|\ud83d\udc6c|\ud83d\udc6d|\ud83d\udcad|\ud83d\udcb6|\ud83d\udcb7|\ud83d\udcec|\ud83d\udced|\ud83d\udcef|\ud83d\udcf5|\ud83d\udd00|\ud83d\udd01|\ud83d\udd02|\ud83d\udd04|\ud83d\udd05|\ud83d\udd06|\ud83d\udd07|\ud83d\udd08|\ud83d\udd09|\ud83d\udd15|\ud83d\udd2c|\ud83d\udd2d|\ud83d\udd5c|\ud83d\udd5d|\ud83d\udd5e|\ud83d\udd5f|\ud83d\udd60|\ud83d\udd61|\ud83d\udd62|\ud83d\udd63|\ud83d\udd64|\ud83d\udd65|\ud83d\udd66|\ud83d\udd67|\ud83d\ude00|\ud83d\ude07|\ud83d\ude08|\ud83d\ude0e|\ud83d\ude10|\ud83d\ude11|\ud83d\ude15|\ud83d\ude17|\ud83d\ude19|\ud83d\ude1b|\ud83d\ude1f|\ud83d\ude26|\ud83d\ude27|\ud83d\ude2c|\ud83d\ude2e|\ud83d\ude2f|\ud83d\ude34|\ud83d\ude36|\ud83d\ude81|\ud83d\ude82|\ud83d\ude86|\ud83d\ude88|\ud83d\ude8a|\ud83d\ude8b|\ud83d\ude8d|\ud83d\ude8e|\ud83d\ude90|\ud83d\ude94|\ud83d\ude96|\ud83d\ude98|\ud83d\ude9b|\ud83d\ude9c|\ud83d\ude9d|\ud83d\ude9e|\ud83d\ude9f|\ud83d\udea0|\ud83d\udea1|\ud83d\udea3|\ud83d\udea6|\ud83d\udeae|\ud83d\udeaf|\ud83d\udeb0|\ud83d\udeb1|\ud83d\udeb3|\ud83d\udeb4|\ud83d\udeb5|\ud83d\udeb7|\ud83d\udeb8|\ud83d\udebf|\ud83d\udec1|\ud83d\udec2|\ud83d\udec3|\ud83d\udec4|\ud83d\udec5|\ud83c\udf17|\ud83c\udf16|\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|\ud83c\udf18|\ud83c\udf1a|\ud83c\udf1c|\ud83c\udf1d|\ud83c\udf1e|\ud83c\udf32|\ud83c\udf33|\ud83c\udf4b|\ud83c\udf50|\ud83c\udf7c|\ud83c\udfc7|\ud83c\udfc9|\ud83c\udfe4|\ud83d\udc00|\ud83d\udc01|\ud83d\udc02|\ud83d\udc03|\ud83d\udc04|\ud83d\udc05|\ud83d\udc06|\ud83d\udc07|\ud83d\udc08|\ud83d\udc09|\ud83d\udc0a|\ud83d\udc0b|\ud83d\udc0f|\ud83d\udc10|\ud83d\udc13|\ud83d\udc15|\ud83d\udc16|\ud83d\udc2a|\ud83d\udc65|\ud83d\udc6c|\ud83d\udc6d|\ud83d\udcad|\ud83d\udcb6|\ud83d\udcb7|\ud83d\udcec|\ud83d\udced|\ud83d\udcef|\ud83d\udcf5|\ud83d\udd00|\ud83d\udd01|\ud83d\udd02|\ud83d\udd04|\ud83d\udd05|\ud83d\udd06|\ud83d\udd07|\ud83d\udd08|\ud83d\udd09|\ud83d\udd15|\ud83d\udd2c|\ud83d\udd2d|\ud83d\udd5c|\ud83d\udd5d|\ud83d\udd5e|\ud83d\udd5f|\ud83d\udd60|\ud83d\udd61|\ud83d\udd62|\ud83d\udd63|\ud83d\udd64|\ud83d\udd65|\ud83d\udd66|\ud83d\udd67|\ud83d\ude00|\ud83d\ude07|\ud83d\ude08|\ud83d\ude0e|\ud83d\ude10|\ud83d\ude11|\ud83d\ude15|\ud83d\ude17|\ud83d\ude19|\ud83d\ude1b|\ud83d\ude1f|\ud83d\ude26|\ud83d\ude27|\ud83d\ude2c|\ud83d\ude2e|\ud83d\ude2f|\ud83d\ude34|\ud83d\ude36|\ud83d\ude81|\ud83d\ude82|\ud83d\ude86|\ud83d\ude88|\ud83d\ude8a|\ud83d\ude8b|\ud83d\ude8d|\ud83d\ude8e|\ud83d\ude90|\ud83d\ude94|\ud83d\ude96|\ud83d\ude98|\ud83d\ude9b|\ud83d\ude9c|\ud83d\ude9d|\ud83d\ude9e|\ud83d\ude9f|\ud83d\udea0|\ud83d\udea1|\ud83d\udea3|\ud83d\udea6|\ud83d\udeae|\ud83d\udeaf|\ud83d\udeb0|\ud83d\udeb1|\ud83d\udeb3|\ud83d\udeb4|\ud83d\udeb5|\ud83d\udeb7|\ud83d\udeb8|\ud83d\udebf|\ud83d\udec1|\ud83d\udec2|\ud83d\udec3|\ud83d\udec4|\ud83d\udec5|\ud83c\udf12|\ud83c\udf10|\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|\ue50a|\ue50a|\ue50a|\u27bf|\u3030|\u27b0|\u2797|\u2796|\u2795|\u2755|\u2754|\u2753|\u274e|\u274c|\u2728|\u270b|\u270a|\u2705|\u26ce|\u27bf|\u23f3|\u23f0|\u23ec|\u23eb|\u23ea|\u23e9|\u2122|\u27bf|\u00a9|\u00ae)|(?:(?:\ud83c\udc04|\ud83c\udd7f|\ud83c\ude1a|\ud83c\ude2f|\u3299|\u3297|\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|\u267b|\u2668|\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|\u267f)([\uFE0E\uFE0F]?)))/g,
// nodes with type 1 which should **not** be parsed
shouldntBeParsed = /IFRAME|NOFRAMES|NOSCRIPT|SCRIPT|STYLE/,
// 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) :
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,
fragment,
subnode,
text,
match,
i,
index,
img,
alt,
icon,
variant,
src;
while (length--) {
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;
}
}
fragment.appendChild(img || createText(alt));
img = null;
}
// is there actually anything to replace in here ?
if (0 < i) {
// 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 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 = '<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,
'"',
'>'
);
}
}
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 <img> 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 || 'emoji'
});
}
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;
});