import { unicodeMapping } from './emojione_light'; import Trie from 'substring-trie'; const trie = new Trie(Object.keys(unicodeMapping)); const assetHost = process.env.CDN_HOST || ''; const emojify = (str, customEmojis = {}) => { let rtn = ''; for (;;) { let match, i = 0, tag; while (i < str.length && (tag = '<&:'.indexOf(str[i])) === -1 && !(match = trie.search(str.slice(i)))) { i += str.codePointAt(i) < 65536 ? 1 : 2; } let rend, replacement = ''; if (i === str.length) { break; } else if (str[i] === ':') { if (!(() => { rend = str.indexOf(':', i + 1) + 1; if (!rend) return false; // no pair of ':' const lt = str.indexOf('<', i + 1); if (!(lt === -1 || lt >= rend)) return false; // tag appeared before closing ':' const shortname = str.slice(i, rend); // now got a replacee as ':shortname:' // if you want additional emoji handler, add statements below which set replacement and return true. if (shortname in customEmojis) { replacement = `${shortname}`; return true; } return false; })()) rend = ++i; } else if (tag >= 0) { // <, & rend = str.indexOf('>;'[tag], i + 1) + 1; if (!rend) break; i = rend; } else { // matched to unicode emoji const [filename, shortCode] = unicodeMapping[match]; replacement = `${match}`; rend = i + match.length; } rtn += str.slice(0, i) + replacement; str = str.slice(rend); } return rtn + str; }; export default emojify; export const buildCustomEmojis = customEmojis => { const emojis = []; customEmojis.forEach(emoji => { const shortcode = emoji.get('shortcode'); const url = emoji.get('static_url'); const name = shortcode.replace(':', ''); emojis.push({ id: name, name, short_names: [name], text: '', emoticons: [], keywords: [name], imageUrl: url, custom: true, }); }); return emojis; };