mirror of
https://github.com/twitter/twemoji.git
synced 2024-06-15 03:35:16 +00:00
569 lines
24 KiB
JavaScript
569 lines
24 KiB
JavaScript
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: 'https://twemoji.maxcdn.com/2/',
|
|
|
|
// default assets file extensions, by default '.png'
|
|
ext: '.png',
|
|
|
|
// default assets/folder size, by default "72x72"
|
|
// available via Twitter CDN: 72
|
|
size: '72x72',
|
|
|
|
// 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:
|
|
*
|
|
* iconId: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(iconId, options) {
|
|
* return '/assets/' + iconId + '.gif';
|
|
* });
|
|
* // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji!
|
|
*
|
|
*
|
|
* twemoji.parse("I \u2764\uFE0F emoji!", {
|
|
* size: 72,
|
|
* callback: function(iconId, options) {
|
|
* return '/assets/' + options.size + '/' + iconId + 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(
|
|
* rawText, // the emoji match
|
|
* );
|
|
*
|
|
* and others commonly received via replace.
|
|
*/
|
|
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 = {
|
|
'&': '&',
|
|
'<': '<',
|
|
'>': '>',
|
|
"'": ''',
|
|
'"': '"'
|
|
},
|
|
|
|
// RegExp based on emoji's official Unicode standards
|
|
// http://www.unicode.org/Public/UNIDATA/EmojiSources.txt
|
|
re = /\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d\udc8b\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc66\u200d\ud83d\udc66|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d\udc67\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\u2764\ufe0f\u200d\ud83d\udc68|\ud83d\udc68\u200d\ud83d\udc68\u200d\ud83d[\udc66\udc67]|\ud83d\udc68\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc69\u200d\u2764\ufe0f\u200d\ud83d[\udc68\udc69]|\ud83d\udc69\u200d\ud83d\udc69\u200d\ud83d[\udc66\udc67]|\ud83d\udc41\u200d\ud83d\udde8|(?:[\u0023\u002a\u0030-\u0039])\ufe0f?\u20e3|(?:(?:[\u261d\u270c])(?:\ufe0f|(?!\ufe0e))|\ud83c[\udf85\udfc2-\udfc4\udfc7\udfca\udfcb]|\ud83d[\udc42\udc43\udc46-\udc50\udc66-\udc69\udc6e\udc70-\udc78\udc7c\udc81-\udc83\udc85-\udc87\udcaa\udd75\udd90\udd95\udd96\ude45-\ude47\ude4b-\ude4f\udea3\udeb4-\udeb6\udec0]|\ud83e\udd18|[\u26f9\u270a\u270b\u270d])(?:\ud83c[\udffb-\udfff]|)|\ud83c\udde6\ud83c[\udde8-\uddec\uddee\uddf1\uddf2\uddf4\uddf6-\uddfa\uddfc\uddfd\uddff]|\ud83c\udde7\ud83c[\udde6\udde7\udde9-\uddef\uddf1-\uddf4\uddf6-\uddf9\uddfb\uddfc\uddfe\uddff]|\ud83c\udde8\ud83c[\udde6\udde8\udde9\uddeb-\uddee\uddf0-\uddf5\uddf7\uddfa-\uddff]|\ud83c\udde9\ud83c[\uddea\uddec\uddef\uddf0\uddf2\uddf4\uddff]|\ud83c\uddea\ud83c[\udde6\udde8\uddea\uddec\udded\uddf7-\uddfa]|\ud83c\uddeb\ud83c[\uddee-\uddf0\uddf2\uddf4\uddf7]|\ud83c\uddec\ud83c[\udde6\udde7\udde9-\uddee\uddf1-\uddf3\uddf5-\uddfa\uddfc\uddfe]|\ud83c\udded\ud83c[\uddf0\uddf2\uddf3\uddf7\uddf9\uddfa]|\ud83c\uddee\ud83c[\udde8-\uddea\uddf1-\uddf4\uddf6-\uddf9]|\ud83c\uddef\ud83c[\uddea\uddf2\uddf4\uddf5]|\ud83c\uddf0\ud83c[\uddea\uddec-\uddee\uddf2\uddf3\uddf5\uddf7\uddfc\uddfe\uddff]|\ud83c\uddf1\ud83c[\udde6-\udde8\uddee\uddf0\uddf7-\uddfb\uddfe]|\ud83c\uddf2\ud83c[\udde6\udde8-\udded\uddf0-\uddff]|\ud83c\uddf3\ud83c[\udde6\udde8\uddea-\uddec\uddee\uddf1\uddf4\uddf5\uddf7\uddfa\uddff]|\ud83c\uddf4\ud83c\uddf2|\ud83c\uddf5\ud83c[\udde6\uddea-\udded\uddf0-\uddf3\uddf7-\uddf9\uddfc\uddfe]|\ud83c\uddf6\ud83c\udde6|\ud83c\uddf7\ud83c[\uddea\uddf4\uddf8\uddfa\uddfc]|\ud83c\uddf8\ud83c[\udde6-\uddea\uddec-\uddf4\uddf7-\uddf9\uddfb\uddfd-\uddff]|\ud83c\uddf9\ud83c[\udde6\udde8\udde9\uddeb-\udded\uddef-\uddf4\uddf7\uddf9\uddfb\uddfc\uddff]|\ud83c\uddfa\ud83c[\udde6\uddec\uddf2\uddf8\uddfe\uddff]|\ud83c\uddfb\ud83c[\udde6\udde8\uddea\uddec\uddee\uddf3\uddfa]|\ud83c\uddfc\ud83c[\uddeb\uddf8]|\ud83c\uddfd\ud83c\uddf0|\ud83c\uddfe\ud83c[\uddea\uddf9]|\ud83c\uddff\ud83c[\udde6\uddf2\uddfc]|\ud83c[\udccf\udd8e\udd91-\udd9a\udde6-\uddff\ude01\ude32-\ude36\ude38-\ude3a\ude50\ude51\udf00-\udf21\udf24-\udf84\udf86-\udf93\udf96\udf97\udf99-\udf9b\udf9e-\udfc1\udfc5\udfc6\udfc8\udfc9\udfcc-\udff0\udff3-\udff5\udff7-\udfff]|\ud83d[\udc00-\udc41\udc44\udc45\udc51-\udc65\udc6a-\udc6d\udc6f\udc79-\udc7b\udc7d-\udc80\udc84\udc88-\udca9\udcab-\udcfd\udcff-\udd3d\udd49-\udd4e\udd50-\udd67\udd6f\udd70\udd73\udd74\udd76-\udd79\udd87\udd8a-\udd8d\udda5\udda8\uddb1\uddb2\uddbc\uddc2-\uddc4\uddd1-\uddd3\udddc-\uddde\udde1\udde3\udde8\uddef\uddf3\uddfa-\ude44\ude48-\ude4a\ude80-\udea2\udea4-\udeb3\udeb7-\udebf\udec1-\udec5\udecb-\uded0\udee0-\udee5\udee9\udeeb\udeec\udef0\udef3]|\ud83e[\udd10-\udd17\udd80-\udd84\uddc0]|[\u2328\u23cf\u23e9-\u23f3\u23f8-\u23fa\u2602-\u2604\u2618\u2620\u2622\u2623\u2626\u262a\u262e\u262f\u2638\u2692\u2694\u2696\u2697\u2699\u269b\u269c\u26b0\u26b1\u26c8\u26ce\u26cf\u26d1\u26d3\u26e9\u26f0\u26f1\u26f4\u26f7\u26f8\u2705\u271d\u2721\u2728\u274c\u274e\u2753-\u2755\u2763\u2795-\u2797\u27b0\u27bf\ue50a]|(?:\ud83c[\udc04\udd70\udd71\udd7e\udd7f\ude02\ude1a\ude2f\ude37]|[\u00a9\u00ae\u203c\u2049\u2122\u2139\u2194-\u2199\u21a9\u21aa\u231a\u231b\u24c2\u25aa\u25ab\u25b6\u25c0\u25fb-\u25fe\u2600\u2601\u260e\u2611\u2614\u2615\u2639\u263a\u2648-\u2653\u2660\u2663\u2665\u2666\u2668\u267b\u267f\u2693\u26a0\u26a1\u26aa\u26ab\u26bd\u26be\u26c4\u26c5\u26d4\u26ea\u26f2\u26f3\u26f5\u26fa\u26fd\u2702\u2708\u2709\u270f\u2712\u2714\u2716\u2733\u2734\u2744\u2747\u2757\u2764\u27a1\u2934\u2935\u2b05-\u2b07\u2b1b\u2b1c\u2b50\u2b55\u3030\u303d\u3297\u3299])(?:\ufe0f|(?!\ufe0e))/g,
|
|
|
|
// avoid runtime RegExp creation for not so smart,
|
|
// not JIT based, and old browsers / engines
|
|
UFE0Fg = /\uFE0F/g,
|
|
|
|
// avoid using a string literal like '\u200D' here because minifiers expand it inline
|
|
U200D = String.fromCharCode(0x200D),
|
|
|
|
// 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"
|
|
* @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.
|
|
* If there is a zero-width-joiner (U+200D), leave the variants in.
|
|
* @param string the raw text of the emoji match
|
|
*/
|
|
function grabTheRightIcon(rawText) {
|
|
// if variant is present as \uFE0F
|
|
return toCodePoint(rawText.indexOf(U200D) < 0 ?
|
|
rawText.replace(UFE0Fg, '') :
|
|
rawText
|
|
);
|
|
}
|
|
|
|
/**
|
|
* 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,
|
|
attrib,
|
|
attrname,
|
|
modified,
|
|
fragment,
|
|
subnode,
|
|
text,
|
|
match,
|
|
i,
|
|
index,
|
|
img,
|
|
rawText,
|
|
iconId,
|
|
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))
|
|
);
|
|
}
|
|
rawText = match[0];
|
|
iconId = grabTheRightIcon(rawText);
|
|
i = index + rawText.length;
|
|
src = options.callback(iconId, options);
|
|
if (src) {
|
|
img = new Image();
|
|
img.onerror = options.onerror;
|
|
img.setAttribute('draggable', 'false');
|
|
attrib = options.attributes(rawText, iconId);
|
|
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 = rawText;
|
|
img.src = src;
|
|
modified = true;
|
|
fragment.appendChild(img);
|
|
}
|
|
if (!img) fragment.appendChild(createText(rawText));
|
|
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 (rawText) {
|
|
var
|
|
ret = rawText,
|
|
iconId = grabTheRightIcon(rawText),
|
|
src = options.callback(iconId, options),
|
|
attrib,
|
|
attrname;
|
|
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="',
|
|
rawText,
|
|
'"',
|
|
' src="',
|
|
src,
|
|
'"'
|
|
);
|
|
attrib = options.attributes(rawText, iconId);
|
|
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 || '-');
|
|
}
|
|
|
|
}());
|
|
return twemoji;
|
|
}); |