PhabricatorRemarkupRuleImageMacro.php
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	<?php

	/*
	* Copyright 2012 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
	*/
	final class PhabricatorRemarkupRuleImageMacro
	extends PhutilRemarkupRule {

	private $images = array();

	public function __construct() {
	$rows = id(new PhabricatorFileImageMacro())->loadAll();
	foreach ($rows as $row) {
	$this->images[$row->getName()] = $row->getFilePHID();
	}
	}

	public function apply($text) {
	return preg_replace_callback(
	'@^([a-zA-Z0-9_\-]+)$@m',
	array($this, 'markupImageMacro'),
	$text);
	}

	public function markupImageMacro($matches) {
	if (array_key_exists($matches[1], $this->images)) {
	$phid = $this->images[$matches[1]];

	$file = id(new PhabricatorFile())->loadOneWhere('phid = %s', $phid);
	if ($file) {
	$src_uri = $file->getBestURI();
	} else {
	$src_uri = null;
	}

	$img = phutil_render_tag(
	'img',
	array(
	'src' => $src_uri,
	'alt' => $matches[1],
	'title' => $matches[1]),
	null);
	return $this->getEngine()->storeText($img);
	} else {
	return $matches[1];
	}
	}

	}