PhabricatorRemarkupKaTeXBlockInterpreter.php
f96a14e76e1bproduction

PhabricatorRemarkupKaTeXBlockInterpreter.php
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			<?php

			final class PhabricatorRemarkupKaTeXBlockInterpreter
			extends PhutilRemarkupBlockInterpreter {

			public function getInterpreterName() {
			return 'katex';
			}

			public function markupContent($content, array $argv) {
			$future = id(new ExecFuture('node /opt/render2katex/index.js d'))
			->setTimeout(15)
			->write(trim($content));

			list($err, $stdout, $stderr) = $future->resolve();

			if ($err) {
			return $this->markupError(
			pht(
			'Execution of `%s` failed (#%d), check your syntax: %s',
			'render2katex',
			$err,
			$stderr));
			}

			$result = $stdout;
			$engine = $this->getEngine();

			if ($engine->isTextMode()) {
			return $result;
			}

			if ($engine->isHTMLMailMode()) {
			return $result;
			}

			return phutil_safe_html($result);
			}

			}