PhutilDefaultSyntaxHighlighterEngine.php
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	<?php

	/*
	* Copyright 2011 Facebook, Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	/**
	* @group markup
	*/
	class PhutilDefaultSyntaxHighlighterEngine
	extends PhutilSyntaxHighlighterEngine {

	private $config = array();

	public function setConfig($key, $value) {
	$this->config[$key] = $value;
	return $this;
	}

	public function highlightSource($name, $source) {

	$name = explode('.', $name);
	$lang = end($name);

	try {
	switch ($lang) {
	case 'php':
	return id(new PhutilXHPASTSyntaxHighlighter())
	->highlightSource($source);
	default:
	if (!empty($this->config['pygments.enabled'])) {
	$future = new ExecFuture(
	'pygmentize -O stripnl=False -f html -l %s', $lang);
	$future->write($source);
	list($err, $stdout, $stderr) = $future->resolve();
	if (!$err && strlen($stdout)) {
	// Strip off fluff Pygments adds.
	$stdout = preg_replace(
	'@^<div class="highlight"><pre>(.)</pre></div>\s$@s',
	'\1',
	$stdout);
	return $stdout;
	}
	}
	return phutil_escape_html($source);
	}
	} catch (Exception $ex) {
	return phutil_escape_html($source);
	}
	}
	}