| 1 | /*jslint indent: 2, browser: true, bitwise: true, plusplus: true */ |
| 2 | var twemoji; |
| 3 | twemoji = (function ( |
| 4 | /*! Copyright Twitter Inc. and other contributors. Licensed under MIT *//* |
| 5 | https://github.com/twitter/twemoji/blob/gh-pages/LICENSE |
| 6 | */ |
| 7 | |
| 8 | // WARNING: this file is generated automatically via |
| 9 | // `node twemoji-generator.js` |
| 10 | // please update its `createTwemoji` function |
| 11 | // at the bottom of the same file instead. |
| 12 | |
| 13 | ) { |
| 14 | 'use strict'; |
| 15 | |
| 16 | /*jshint maxparams:4 */ |
| 17 | |
| 18 | var |
| 19 | // the exported module object |
| 20 | twemoji = { |
| 21 | |
| 22 | |
| 23 | ///////////////////////// |
| 24 | // properties // |
| 25 | ///////////////////////// |
| 26 | |
| 27 | // default assets url, by default will be Twitter Inc. CDN |
| 28 | base: (location.protocol === 'https:' ? 'https:' : 'http:') + |
| 29 | '//twemoji.maxcdn.com/', |
| 30 | |
| 31 | // default assets file extensions, by default '.png' |
| 32 | ext: '.png', |
| 33 | |
| 34 | // default assets/folder size, by default "36x36" |
| 35 | // available via Twitter CDN: 16, 36, 72 |
| 36 | size: '36x36', |
| 37 | |
| 38 | // default class name, by default 'emoji' |
| 39 | className: 'emoji', |
| 40 | |
| 41 | // basic utilities / helpers to convert code points |
| 42 | // to JavaScript surrogates and vice versa |
| 43 | convert: { |
| 44 | |
| 45 | /** |
| 46 | * Given an HEX codepoint, returns UTF16 surrogate pairs. |
| 47 | * |
| 48 | * @param string generic codepoint, i.e. '1F4A9' |
| 49 | * @return string codepoint transformed into utf16 surrogates pair, |
| 50 | * i.e. \uD83D\uDCA9 |
| 51 | * |
| 52 | * @example |
| 53 | * twemoji.convert.fromCodePoint('1f1e8'); |
| 54 | * // "\ud83c\udde8" |
| 55 | * |
| 56 | * '1f1e8-1f1f3'.split('-').map(twemoji.convert.fromCodePoint).join('') |
| 57 | * // "\ud83c\udde8\ud83c\uddf3" |
| 58 | */ |
| 59 | fromCodePoint: fromCodePoint, |
| 60 | |
| 61 | /** |
| 62 | * Given UTF16 surrogate pairs, returns the equivalent HEX codepoint. |
| 63 | * |
| 64 | * @param string generic utf16 surrogates pair, i.e. \uD83D\uDCA9 |
| 65 | * @param string optional separator for double code points, default='-' |
| 66 | * @return string utf16 transformed into codepoint, i.e. '1F4A9' |
| 67 | * |
| 68 | * @example |
| 69 | * twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3'); |
| 70 | * // "1f1e8-1f1f3" |
| 71 | * |
| 72 | * twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3', '~'); |
| 73 | * // "1f1e8~1f1f3" |
| 74 | */ |
| 75 | toCodePoint: toCodePoint |
| 76 | }, |
| 77 | |
| 78 | |
| 79 | ///////////////////////// |
| 80 | // methods // |
| 81 | ///////////////////////// |
| 82 | |
| 83 | /** |
| 84 | * User first: used to remove missing images |
| 85 | * preserving the original text intent when |
| 86 | * a fallback for network problems is desired. |
| 87 | * Automatically added to Image nodes via DOM |
| 88 | * It could be recycled for string operations via: |
| 89 | * $('img.emoji').on('error', twemoji.onerror) |
| 90 | */ |
| 91 | onerror: function onerror() { |
| 92 | if (this.parentNode) { |
| 93 | this.parentNode.replaceChild(createText(this.alt), this); |
| 94 | } |
| 95 | }, |
| 96 | |
| 97 | /** |
| 98 | * Main method/logic to generate either <img> tags or HTMLImage nodes. |
| 99 | * "emojify" a generic text or DOM Element. |
| 100 | * |
| 101 | * @overloads |
| 102 | * |
| 103 | * String replacement for `innerHTML` or server side operations |
| 104 | * twemoji.parse(string); |
| 105 | * twemoji.parse(string, Function); |
| 106 | * twemoji.parse(string, Object); |
| 107 | * |
| 108 | * HTMLElement tree parsing for safer operations over existing DOM |
| 109 | * twemoji.parse(HTMLElement); |
| 110 | * twemoji.parse(HTMLElement, Function); |
| 111 | * twemoji.parse(HTMLElement, Object); |
| 112 | * |
| 113 | * @param string|HTMLElement the source to parse and enrich with emoji. |
| 114 | * |
| 115 | * string replace emoji matches with <img> tags. |
| 116 | * Mainly used to inject emoji via `innerHTML` |
| 117 | * It does **not** parse the string or validate it, |
| 118 | * it simply replaces found emoji with a tag. |
| 119 | * NOTE: be sure this won't affect security. |
| 120 | * |
| 121 | * HTMLElement walk through the DOM tree and find emoji |
| 122 | * that are inside **text node only** (nodeType === 3) |
| 123 | * Mainly used to put emoji in already generated DOM |
| 124 | * without compromising surrounding nodes and |
| 125 | * **avoiding** the usage of `innerHTML`. |
| 126 | * NOTE: Using DOM elements instead of strings should |
| 127 | * improve security without compromising too much |
| 128 | * performance compared with a less safe `innerHTML`. |
| 129 | * |
| 130 | * @param Function|Object [optional] |
| 131 | * either the callback that will be invoked or an object |
| 132 | * with all properties to use per each found emoji. |
| 133 | * |
| 134 | * Function if specified, this will be invoked per each emoji |
| 135 | * that has been found through the RegExp except |
| 136 | * those follwed by the invariant \uFE0E ("as text"). |
| 137 | * Once invoked, parameters will be: |
| 138 | * |
| 139 | * codePoint:string the lower case HEX code point |
| 140 | * i.e. "1f4a9" |
| 141 | * |
| 142 | * options:Object all info for this parsing operation |
| 143 | * |
| 144 | * variant:char the optional \uFE0F ("as image") |
| 145 | * variant, in case this info |
| 146 | * is anyhow meaningful. |
| 147 | * By default this is ignored. |
| 148 | * |
| 149 | * If such callback will return a falsy value instead |
| 150 | * of a valid `src` to use for the image, nothing will |
| 151 | * actually change for that specific emoji. |
| 152 | * |
| 153 | * |
| 154 | * Object if specified, an object containing the following properties |
| 155 | * |
| 156 | * callback Function the callback to invoke per each found emoji. |
| 157 | * base string the base url, by default twemoji.base |
| 158 | * ext string the image extension, by default twemoji.ext |
| 159 | * size string the assets size, by default twemoji.size |
| 160 | * |
| 161 | * @example |
| 162 | * |
| 163 | * twemoji.parse("I \u2764\uFE0F emoji!"); |
| 164 | * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji! |
| 165 | * |
| 166 | * |
| 167 | * twemoji.parse("I \u2764\uFE0F emoji!", function(icon, options, variant) { |
| 168 | * return '/assets/' + icon + '.gif'; |
| 169 | * }); |
| 170 | * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji! |
| 171 | * |
| 172 | * |
| 173 | * twemoji.parse("I \u2764\uFE0F emoji!", { |
| 174 | * size: 72, |
| 175 | * callback: function(icon, options, variant) { |
| 176 | * return '/assets/' + options.size + '/' + icon + options.ext; |
| 177 | * } |
| 178 | * }); |
| 179 | * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/72x72/2764.png"> emoji! |
| 180 | * |
| 181 | */ |
| 182 | parse: parse, |
| 183 | |
| 184 | /** |
| 185 | * Given a string, invokes the callback argument |
| 186 | * per each emoji found in such string. |
| 187 | * This is the most raw version used by |
| 188 | * the .parse(string) method itself. |
| 189 | * |
| 190 | * @param string generic string to parse |
| 191 | * @param Function a generic callback that will be |
| 192 | * invoked to replace the content. |
| 193 | * This calback wil receive standard |
| 194 | * String.prototype.replace(str, callback) |
| 195 | * arguments such: |
| 196 | * callback( |
| 197 | * match, // the emoji match |
| 198 | * icon, // the emoji text (same as text) |
| 199 | * variant // either '\uFE0E' or '\uFE0F', if present |
| 200 | * ); |
| 201 | * |
| 202 | * and others commonly received via replace. |
| 203 | * |
| 204 | * NOTE: When the variant \uFE0E is found, remember this is an explicit intent |
| 205 | * from the user: the emoji should **not** be replaced with an image. |
| 206 | * In \uFE0F case one, it's the opposite, it should be graphic. |
| 207 | * This utility convetion is that only \uFE0E are not translated into images. |
| 208 | */ |
| 209 | replace: replace, |
| 210 | |
| 211 | /** |
| 212 | * Simplify string tests against emoji. |
| 213 | * |
| 214 | * @param string some text that might contain emoji |
| 215 | * @return boolean true if any emoji was found, false otherwise. |
| 216 | * |
| 217 | * @example |
| 218 | * |
| 219 | * if (twemoji.test(someContent)) { |
| 220 | * console.log("emoji All The Things!"); |
| 221 | * } |
| 222 | */ |
| 223 | test: test |
| 224 | }, |
| 225 | |
| 226 | // RegExp based on emoji's official Unicode standards |
| 227 | // http://www.unicode.org/Public/UNIDATA/EmojiSources.txt |
| 228 | 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\udd70|\ud83c\udd71|\ud83c\udd7e|\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\ude02|\ud83c\ude32|\ud83c\ude33|\ud83c\ude34|\ud83c\ude35|\ud83c\ude36|\ud83c\ude37|\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|\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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, |
| 229 | |
| 230 | // nodes with type 1 which should **not** be parsed |
| 231 | shouldntBeParsed = /IFRAME|NOFRAMES|NOSCRIPT|SCRIPT|STYLE|TEXTAREA|SELECT/, |
| 232 | |
| 233 | // just a private shortcut |
| 234 | fromCharCode = String.fromCharCode; |
| 235 | |
| 236 | return twemoji; |
| 237 | |
| 238 | |
| 239 | ///////////////////////// |
| 240 | // private functions // |
| 241 | // declaration // |
| 242 | ///////////////////////// |
| 243 | |
| 244 | /** |
| 245 | * Shortcut to create text nodes |
| 246 | * @param string text used to create DOM text node |
| 247 | * @return Node a DOM node with that text |
| 248 | */ |
| 249 | function createText(text) { |
| 250 | return document.createTextNode(text); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Default callback used to generate emoji src |
| 255 | * based on Twitter CDN |
| 256 | * @param string the emoji codepoint string |
| 257 | * @param string the default size to use, i.e. "36x36" |
| 258 | * @param string optional "\uFE0F" variant char, ignored by default |
| 259 | * @return string the image source to use |
| 260 | */ |
| 261 | function defaultImageSrcGenerator(icon, options) { |
| 262 | return ''.concat(options.base, options.size, '/', icon, options.ext); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Given a generic DOM nodeType 1, walk through all children |
| 267 | * and store every nodeType 3 (#text) found in the tree. |
| 268 | * @param Element a DOM Element with probably some text in it |
| 269 | * @param Array the list of previously discovered text nodes |
| 270 | * @return Array same list with new discovered nodes, if any |
| 271 | */ |
| 272 | function grabAllTextNodes(node, allText) { |
| 273 | var |
| 274 | childNodes = node.childNodes, |
| 275 | length = childNodes.length, |
| 276 | subnode, |
| 277 | nodeType; |
| 278 | while (length--) { |
| 279 | subnode = childNodes[length]; |
| 280 | nodeType = subnode.nodeType; |
| 281 | // parse emoji only in text nodes |
| 282 | if (nodeType === 3) { |
| 283 | // collect them to process emoji later |
| 284 | allText.push(subnode); |
| 285 | } |
| 286 | // ignore all nodes that are not type 1 or that |
| 287 | // should not be parsed as script, style, and others |
| 288 | else if (nodeType === 1 && !shouldntBeParsed.test(subnode.nodeName)) { |
| 289 | grabAllTextNodes(subnode, allText); |
| 290 | } |
| 291 | } |
| 292 | return allText; |
| 293 | } |
| 294 | |
| 295 | /** |
| 296 | * Used to both remove the possible variant |
| 297 | * and to convert utf16 into code points |
| 298 | * @param string the emoji surrogate pair |
| 299 | * @param string the optional variant char, if any |
| 300 | */ |
| 301 | function grabTheRightIcon(icon, variant) { |
| 302 | // if variant is present as \uFE0F |
| 303 | return toCodePoint( |
| 304 | variant === '\uFE0F' ? |
| 305 | // the icon should not contain it |
| 306 | icon.slice(0, -1) : |
| 307 | // fix non standard OSX behavior |
| 308 | (icon.length === 3 && icon.charAt(1) === '\uFE0F' ? |
| 309 | icon.charAt(0) + icon.charAt(2) : icon) |
| 310 | ); |
| 311 | } |
| 312 | |
| 313 | /** |
| 314 | * DOM version of the same logic / parser: |
| 315 | * emojify all found sub-text nodes placing images node instead. |
| 316 | * @param Element generic DOM node with some text in some child node |
| 317 | * @param Object options containing info about how to parse |
| 318 | * |
| 319 | * .callback Function the callback to invoke per each found emoji. |
| 320 | * .base string the base url, by default twemoji.base |
| 321 | * .ext string the image extension, by default twemoji.ext |
| 322 | * .size string the assets size, by default twemoji.size |
| 323 | * |
| 324 | * @return Element same generic node with emoji in place, if any. |
| 325 | */ |
| 326 | function parseNode(node, options) { |
| 327 | var |
| 328 | allText = grabAllTextNodes(node, []), |
| 329 | length = allText.length, |
| 330 | fragment, |
| 331 | subnode, |
| 332 | text, |
| 333 | match, |
| 334 | i, |
| 335 | index, |
| 336 | img, |
| 337 | alt, |
| 338 | icon, |
| 339 | variant, |
| 340 | src; |
| 341 | while (length--) { |
| 342 | fragment = document.createDocumentFragment(); |
| 343 | subnode = allText[length]; |
| 344 | text = subnode.nodeValue; |
| 345 | i = 0; |
| 346 | while ((match = re.exec(text))) { |
| 347 | index = match.index; |
| 348 | if (index !== i) { |
| 349 | fragment.appendChild( |
| 350 | createText(text.slice(i, index)) |
| 351 | ); |
| 352 | } |
| 353 | alt = match[0]; |
| 354 | icon = match[1]; |
| 355 | variant = match[2]; |
| 356 | i = index + alt.length; |
| 357 | if (variant !== '\uFE0E') { |
| 358 | src = options.callback( |
| 359 | grabTheRightIcon(icon, variant), |
| 360 | options, |
| 361 | variant |
| 362 | ); |
| 363 | if (src) { |
| 364 | img = new Image(); |
| 365 | img.onerror = twemoji.onerror; |
| 366 | img.className = options.className; |
| 367 | img.setAttribute('draggable', 'false'); |
| 368 | img.alt = alt; |
| 369 | img.src = src; |
| 370 | } |
| 371 | } |
| 372 | fragment.appendChild(img || createText(alt)); |
| 373 | img = null; |
| 374 | } |
| 375 | // is there actually anything to replace in here ? |
| 376 | if (0 < i) { |
| 377 | // any text left to be added ? |
| 378 | if (i < text.length) { |
| 379 | fragment.appendChild( |
| 380 | createText(text.slice(i)) |
| 381 | ); |
| 382 | } |
| 383 | // replace the text node only, leave intact |
| 384 | // anything else surrounding such text |
| 385 | subnode.parentNode.replaceChild(fragment, subnode); |
| 386 | } |
| 387 | } |
| 388 | return node; |
| 389 | } |
| 390 | |
| 391 | /** |
| 392 | * String/HTML version of the same logic / parser: |
| 393 | * emojify a generic text placing images tags instead of surrogates pair. |
| 394 | * @param string generic string with possibly some emoji in it |
| 395 | * @param Object options containing info about how to parse |
| 396 | * |
| 397 | * .callback Function the callback to invoke per each found emoji. |
| 398 | * .base string the base url, by default twemoji.base |
| 399 | * .ext string the image extension, by default twemoji.ext |
| 400 | * .size string the assets size, by default twemoji.size |
| 401 | * |
| 402 | * @return the string with <img tags> replacing all found and parsed emoji |
| 403 | */ |
| 404 | function parseString(str, options) { |
| 405 | return replace(str, function (match, icon, variant) { |
| 406 | var src; |
| 407 | // verify the variant is not the FE0E one |
| 408 | // this variant means "emoji as text" and should not |
| 409 | // require any action/replacement |
| 410 | // http://unicode.org/Public/UNIDATA/StandardizedVariants.html |
| 411 | if (variant !== '\uFE0E') { |
| 412 | src = options.callback( |
| 413 | grabTheRightIcon(icon, variant), |
| 414 | options, |
| 415 | variant |
| 416 | ); |
| 417 | if (src) { |
| 418 | // recycle the match string replacing the emoji |
| 419 | // with its image counter part |
| 420 | match = '<img '.concat( |
| 421 | 'class="', options.className, '" ', |
| 422 | 'draggable="false" ', |
| 423 | // needs to preserve user original intent |
| 424 | // when variants should be copied and pasted too |
| 425 | 'alt="', |
| 426 | match, |
| 427 | '" ', |
| 428 | 'src="', |
| 429 | src, |
| 430 | '"', |
| 431 | '>' |
| 432 | ); |
| 433 | } |
| 434 | } |
| 435 | return match; |
| 436 | }); |
| 437 | } |
| 438 | |
| 439 | /** |
| 440 | * Given a generic value, creates its squared counterpart if it's a number. |
| 441 | * As example, number 36 will return '36x36'. |
| 442 | * @param any a generic value. |
| 443 | * @return any a string representing asset size, i.e. "36x36" |
| 444 | * only in case the value was a number. |
| 445 | * Returns initial value otherwise. |
| 446 | */ |
| 447 | function toSizeSquaredAsset(value) { |
| 448 | return typeof value === 'number' ? |
| 449 | value + 'x' + value : |
| 450 | value; |
| 451 | } |
| 452 | |
| 453 | |
| 454 | ///////////////////////// |
| 455 | // exported functions // |
| 456 | // declaration // |
| 457 | ///////////////////////// |
| 458 | |
| 459 | function fromCodePoint(codepoint) { |
| 460 | var code = typeof codepoint === 'string' ? |
| 461 | parseInt(codepoint, 16) : codepoint; |
| 462 | if (code < 0x10000) { |
| 463 | return fromCharCode(code); |
| 464 | } |
| 465 | code -= 0x10000; |
| 466 | return fromCharCode( |
| 467 | 0xD800 + (code >> 10), |
| 468 | 0xDC00 + (code & 0x3FF) |
| 469 | ); |
| 470 | } |
| 471 | |
| 472 | function parse(what, how) { |
| 473 | if (!how || typeof how === 'function') { |
| 474 | how = {callback: how}; |
| 475 | } |
| 476 | // if first argument is string, inject html <img> tags |
| 477 | // otherwise use the DOM tree and parse text nodes only |
| 478 | return (typeof what === 'string' ? parseString : parseNode)(what, { |
| 479 | callback: how.callback || defaultImageSrcGenerator, |
| 480 | base: typeof how.base === 'string' ? how.base : twemoji.base, |
| 481 | ext: how.ext || twemoji.ext, |
| 482 | size: how.folder || toSizeSquaredAsset(how.size || twemoji.size), |
| 483 | className:how.className || twemoji.className |
| 484 | }); |
| 485 | } |
| 486 | |
| 487 | function replace(text, callback) { |
| 488 | return String(text).replace(re, callback); |
| 489 | } |
| 490 | |
| 491 | function test(text) { |
| 492 | // IE6 needs a reset before too |
| 493 | re.lastIndex = 0; |
| 494 | var result = re.test(text); |
| 495 | re.lastIndex = 0; |
| 496 | return result; |
| 497 | } |
| 498 | |
| 499 | function toCodePoint(unicodeSurrogates, sep) { |
| 500 | var |
| 501 | r = [], |
| 502 | c = 0, |
| 503 | p = 0, |
| 504 | i = 0; |
| 505 | while (i < unicodeSurrogates.length) { |
| 506 | c = unicodeSurrogates.charCodeAt(i++); |
| 507 | if (p) { |
| 508 | r.push((0x10000 + ((p - 0xD800) << 10) + (c - 0xDC00)).toString(16)); |
| 509 | p = 0; |
| 510 | } else if (0xD800 <= c && c <= 0xDBFF) { |
| 511 | p = c; |
| 512 | } else { |
| 513 | r.push(c.toString(16)); |
| 514 | } |
| 515 | } |
| 516 | return r.join(sep || '-'); |
| 517 | } |
| 518 | |
| 519 | }()); |
| 520 | No newline at end of file |