tildefriends/apps/cory/ssb/tf-shared.js

export function markdown(md) {
	var reader = new commonmark.Parser({safe: true});
	var writer = new commonmark.HtmlRenderer();
	var parsed = reader.parse(md || '');
	var walker = parsed.walker();
	var event, node;
	while ((event = walker.next())) {
		node = event.node;
		if (event.entering) {
			if (node.type == 'link') {
				if (node.destination.startsWith('@') &&
					node.destination.endsWith('.ed25519')) {
					node.destination = '#' + node.destination;
				} else if (node.destination.startsWith('%') &&
					node.destination.endsWith('.sha256')) {
					node.destination = '#' + node.destination;
				} else if (node.destination.startsWith('&') &&
					node.destination.endsWith('.sha256')) {
					node.destination = '/' + node.destination + '/view';
				}
			} else if (node.type == 'image') {
				if (node.destination.startsWith('&')) {
					node.destination = '/' + node.destination + '/view';
				}
			}
		}
	}
	return writer.render(parsed);
}