cinny/src/util/twemojify.jsx
ginnyTheCat b7c5902f67
Add LaTeX / math input and rendering support (#345)
* Initial display support

* Use better colors for error in math parsing

* Parse math markdown

* Use proper jsx

* Better copy support

* use css var directly

* Remove console.debug call

* Lazy load math module

* Show fallback while katex is loading
2022-04-24 21:18:35 +05:30

53 lines
1.5 KiB
JavaScript

/* eslint-disable import/prefer-default-export */
import React, { lazy, Suspense } from 'react';
import linkifyHtml from 'linkifyjs/html';
import parse from 'html-react-parser';
import twemoji from 'twemoji';
import { sanitizeText } from './sanitize';
const Math = lazy(() => import('../app/atoms/math/Math'));
const mathOptions = {
replace: (node) => {
const maths = node.attribs?.['data-mx-maths'];
if (maths) {
return (
<Suspense fallback={<code>{maths}</code>}>
<Math
content={maths}
throwOnError={false}
errorColor="var(--tc-danger-normal)"
displayMode={node.name === 'div'}
/>
</Suspense>
);
}
return null;
},
};
/**
* @param {string} text - text to twemojify
* @param {object|undefined} opts - options for tweomoji.parse
* @param {boolean} [linkify=false] - convert links to html tags (default: false)
* @param {boolean} [sanitize=true] - sanitize html text (default: true)
* @param {boolean} [maths=false] - render maths (default: false)
* @returns React component
*/
export function twemojify(text, opts, linkify = false, sanitize = true, maths = false) {
if (typeof text !== 'string') return text;
let content = text;
if (sanitize) {
content = sanitizeText(content);
}
content = twemoji.parse(content, opts);
if (linkify) {
content = linkifyHtml(content, {
target: '_blank',
rel: 'noreferrer noopener',
});
}
return parse(content, maths ? mathOptions : null);
}