misskey/src/mfm/to-html.ts

160 lines
3.8 KiB
TypeScript

import { JSDOM } from 'jsdom';
import * as mfm from 'mfm-js';
import config from '@/config';
import { intersperse } from '../prelude/array';
import { IMentionedRemoteUsers } from '../models/entities/note';
import { wellKnownServices } from '../well-known-services';
export function toHtml(nodes: mfm.MfmNode[] | null, mentionedRemoteUsers: IMentionedRemoteUsers = []) {
if (nodes == null) {
return null;
}
const { window } = new JSDOM('');
const doc = window.document;
function appendChildren(children: mfm.MfmNode[], targetElement: any): void {
if (children) {
for (const child of children.map(x => (handlers as any)[x.type](x))) targetElement.appendChild(child);
}
}
const handlers: { [K in mfm.MfmNode['type']]: (node: mfm.NodeType<K>) => any } = {
bold(node) {
const el = doc.createElement('b');
appendChildren(node.children, el);
return el;
},
small(node) {
const el = doc.createElement('small');
appendChildren(node.children, el);
return el;
},
strike(node) {
const el = doc.createElement('del');
appendChildren(node.children, el);
return el;
},
italic(node) {
const el = doc.createElement('i');
appendChildren(node.children, el);
return el;
},
fn(node) {
const el = doc.createElement('i');
appendChildren(node.children, el);
return el;
},
blockCode(node) {
const pre = doc.createElement('pre');
const inner = doc.createElement('code');
inner.textContent = node.props.code;
pre.appendChild(inner);
return pre;
},
center(node) {
const el = doc.createElement('div');
appendChildren(node.children, el);
return el;
},
emojiCode(node) {
return doc.createTextNode(`\u200B:${node.props.name}:\u200B`);
},
unicodeEmoji(node) {
return doc.createTextNode(node.props.emoji);
},
hashtag(node) {
const a = doc.createElement('a');
a.href = `${config.url}/tags/${node.props.hashtag}`;
a.textContent = `#${node.props.hashtag}`;
a.setAttribute('rel', 'tag');
return a;
},
inlineCode(node) {
const el = doc.createElement('code');
el.textContent = node.props.code;
return el;
},
mathInline(node) {
const el = doc.createElement('code');
el.textContent = node.props.formula;
return el;
},
mathBlock(node) {
const el = doc.createElement('code');
el.textContent = node.props.formula;
return el;
},
link(node) {
const a = doc.createElement('a');
a.href = node.props.url;
appendChildren(node.children, a);
return a;
},
mention(node) {
const a = doc.createElement('a');
const { username, host, acct } = node.props;
const wellKnown = wellKnownServices.find(x => x[0] === host);
if (wellKnown) {
a.href = wellKnown[1](username);
} else {
const remoteUserInfo = mentionedRemoteUsers.find(remoteUser => remoteUser.username === username && remoteUser.host === host);
a.href = remoteUserInfo ? (remoteUserInfo.url ? remoteUserInfo.url : remoteUserInfo.uri) : `${config.url}/${acct}`;
a.className = 'u-url mention';
}
a.textContent = acct;
return a;
},
quote(node) {
const el = doc.createElement('blockquote');
appendChildren(node.children, el);
return el;
},
text(node) {
const el = doc.createElement('span');
const nodes = node.props.text.split(/\r\n|\r|\n/).map(x => doc.createTextNode(x));
for (const x of intersperse<FIXME | 'br'>('br', nodes)) {
el.appendChild(x === 'br' ? doc.createElement('br') : x);
}
return el;
},
url(node) {
const a = doc.createElement('a');
a.href = node.props.url;
a.textContent = node.props.url;
return a;
},
search(node) {
const a = doc.createElement('a');
a.href = `https://www.google.com/search?q=${node.props.query}`;
a.textContent = node.props.content;
return a;
}
};
appendChildren(nodes, doc.body);
return `<p>${doc.body.innerHTML}</p>`;
}