PhabricatorRemarkupRuleImageMacro.php
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	<?php

	/**
	* @group markup
	*/
	final class PhabricatorRemarkupRuleImageMacro
	extends PhutilRemarkupRule {

	private $images;

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

	public function markupImageMacro($matches) {
	if ($this->images === null) {
	$this->images = array();

	$viewer = $this->getEngine()->getConfig('viewer');
	$rows = id(new PhabricatorMacroQuery())
	->setViewer($viewer)
	->withStatus(PhabricatorMacroQuery::STATUS_ACTIVE)
	->execute();
	foreach ($rows as $row) {
	$this->images[$row->getName()] = $row->getFilePHID();
	}
	}

	$name = (string)$matches[1];

	if (array_key_exists($name, $this->images)) {
	$phid = $this->images[$name];

	$file = id(new PhabricatorFile())->loadOneWhere('phid = %s', $phid);
	$style = null;
	$src_uri = null;
	if ($file) {
	$src_uri = $file->getBestURI();
	$file_data = $file->getMetadata();
	$height = idx($file_data, PhabricatorFile::METADATA_IMAGE_HEIGHT);
	$width = idx($file_data, PhabricatorFile::METADATA_IMAGE_WIDTH);
	if ($height && $width) {
	$style = sprintf(
	'height: %dpx; width: %dpx;',
	$height,
	$width);
	}
	}

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

	}