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import { unicodeMapping } from './emojione_light';
import Trie from 'substring-trie';
const trie = new Trie(Object.keys(unicodeMapping));
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;
}
if (i === str.length)
break;
else if (tag >= 0) {
let tagend = str.indexOf('>;:'[tag], i + 1) + 1;
if (!tagend)
break;
if (str[i] === ':') {
const shortname = str.slice(i, tagend);
const lt = str.indexOf('<', i + 1);
if ((lt === -1 || lt >= tagend) && shortname in customEmojis) {
rtn += str.slice(0, i) + `<img draggable="false" class="emojione" alt="${shortname}" title="${shortname}" src="${customEmojis[shortname]}" />`;
str = str.slice(tagend);
} else {
rtn += str.slice(0, i + 1);
str = str.slice(i + 1);
}
} else {
rtn += str.slice(0, tagend);
str = str.slice(tagend);
}
} else {
const [filename, shortCode] = unicodeMapping[match];
rtn += str.slice(0, i) + `<img draggable="false" class="emojione" alt="${match}" title=":${shortCode}:" src="/emoji/${filename}.svg" />`;
str = str.slice(i + match.length);
}
}
return rtn + str;
};
export default emojify;