discourse/app/assets/javascripts/pretty-text/emoji.js.es6

108 lines
2.7 KiB
JavaScript

import { emoji, aliases, translations } from 'pretty-text/emoji/data';
// bump up this number to expire all emojis
export const IMAGE_VERSION = "3";
const extendedEmoji = {};
export function registerEmoji(code, url) {
code = code.toLowerCase();
extendedEmoji[code] = url;
}
export function emojiList() {
const result = emoji.slice(0);
_.each(extendedEmoji, (v,k) => result.push(k));
return result;
}
const emojiHash = {};
// add all default emojis
emoji.forEach(code => emojiHash[code] = true);
// and their aliases
const aliasHash = {};
Object.keys(aliases).forEach(name => {
aliases[name].forEach(alias => aliasHash[alias] = name);
});
export function performEmojiUnescape(string, opts) {
// this can be further improved by supporting matches of emoticons that don't begin with a colon
if (string.indexOf(":") >= 0) {
return string.replace(/\B:[^\s:]+:?\B/g, m => {
const isEmoticon = !!translations[m];
const emojiVal = isEmoticon ? translations[m] : m.slice(1, m.length - 1);
const hasEndingColon = m.lastIndexOf(":") === m.length - 1;
const url = buildEmojiUrl(emojiVal, opts);
return url && (isEmoticon || hasEndingColon) ?
`<img src='${url}' title='${emojiVal}' alt='${emojiVal}' class='emoji'>` : m;
});
}
return string;
}
export function buildEmojiUrl(code, opts) {
let url;
code = code.toLowerCase();
if (extendedEmoji.hasOwnProperty(code)) {
url = extendedEmoji[code];
}
if (opts && opts.customEmoji && opts.customEmoji[code]) {
url = opts.customEmoji[code];
}
if (!url && emojiHash.hasOwnProperty(code)) {
url = opts.getURL(`/images/emoji/${opts.emojiSet}/${code}.png`);
}
if (url) {
url = url + "?v=" + IMAGE_VERSION;
}
return url;
}
export function emojiExists(code) {
code = code.toLowerCase();
return !!(extendedEmoji.hasOwnProperty(code) || emojiHash.hasOwnProperty(code));
};
let toSearch;
export function emojiSearch(term, options) {
const maxResults = (options && options["maxResults"]) || -1;
if (maxResults === 0) { return []; }
toSearch = toSearch || _.union(_.keys(emojiHash), _.keys(extendedEmoji), _.keys(aliasHash)).sort();
const results = [];
function addResult(t) {
const val = aliasHash[t] || t;
if (results.indexOf(val) === -1) {
results.push(val);
}
return maxResults > 0 && results.length >= maxResults;
}
for (let i=0; i<toSearch.length; i++) {
const item = toSearch[i];
if (item.indexOf(term) === 0 && addResult(item)) {
return results;
}
}
for (let i=0; i<toSearch.length; i++) {
const item = toSearch[i];
if (item.indexOf(term) > 0 && addResult(item)) {
return results;
}
}
return results;
};