PhabricatorRemarkupRuleYoutube.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 PhabricatorRemarkupRuleYoutube
	extends PhutilRemarkupRule {

	public function apply($text) {
	$this->uri = new PhutilURI($text);

	if ($this->uri->getDomain() &&
	preg_match('/youtube\.com$/', $this->uri->getDomain())) {
	return $this->markupYoutubeLink();
	}

	return $text;
	}

	public function markupYoutubeLink() {
	$v = idx($this->uri->getQueryParams(), 'v');
	if ($v) {
	$youtube_src = 'https://www.youtube.com/embed/'.$v;
	$iframe =
	'<div class="embedded-youtube-video">'.
	phutil_render_tag(
	'iframe',
	array(
	'width' => '650',
	'height' => '400',
	'style' => 'margin: 1em auto; border: 0px;',
	'src' => $youtube_src,
	'frameborder' => 0,
	),
	'').
	'</div>';
	return $this->getEngine()->storeText($iframe);
	} else {
	return $this->uri;
	}
	}

	}