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<?php
declare (strict_types = 1);
/**
* @copyright Copyright (c) 2018, John Molakvoæ (skjnldsv@protonmail.com)
*
* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Core\Controller;
use OCP\AppFramework\Controller;
use OCP\AppFramework\Http;
use OCP\AppFramework\Http\DataDisplayResponse;
use OCP\AppFramework\Http\NotFoundResponse;
use OCP\AppFramework\Utility\ITimeFactory;
use OCP\Files\NotFoundException;
use OCP\IRequest;
class SvgController extends Controller {
/** @var string */
protected $serverRoot;
/** @var ITimeFactory */
protected $timeFactory;
public function __construct(string $appName,
IRequest $request,
ITimeFactory $timeFactory) {
parent::__construct($appName, $request);
$this->serverRoot = \OC::$SERVERROOT;
$this->timeFactory = $timeFactory;
}
/**
* @NoAdminRequired
* @NoCSRFRequired
*
* Generate svg from filename with the requested color
*
* @param string $fileName
* @param string $color
* @return DataDisplayResponse|NotFoundException
*/
public function getSvgFromCore(string $fileName, string $color = 'ffffff') {
$path = $this->serverRoot . "/core/img/actions/$fileName.svg";
return $this->getSvg($path, $color);
}
/**
* @NoAdminRequired
* @NoCSRFRequired
*
* Generate svg from filename with the requested color
*
* @param string $fileName
* @param string $color
* @return DataDisplayResponse|NotFoundException
*/
public function getSvgFromApp(string $app, string $fileName, string $color = 'ffffff') {
$appPath = \OC_App::getAppWebPath($app);
if (!$appPath) {
return new NotFoundResponse();
}
$path = $this->serverRoot . $appPath ."/img/$fileName.svg";
return $this->getSvg($path, $color);
}
/**
* Generate svg from filename with the requested color
*
* @param string $path
* @param string $color
* @return DataDisplayResponse|NotFoundException
*/
private function getSvg(string $path, string $color) {
if (!file_exists($path)) {
return new NotFoundResponse();
}
$svg = file_get_contents($path);
if (is_null($svg)) {
return new NotFoundResponse();
}
// add fill (fill is not present on black elements)
$fillRe = '/<((circle|rect|path)((?!fill)[a-z0-9 =".\-#])+)\/>/mi';
$svg = preg_replace($fillRe, '<$1 fill="#' . $color . '"/>', $svg);
// replace any fill or stroke colors
$svg = preg_replace('/stroke="#([a-z0-9]{3,6})"/mi', 'stroke="#' . $color . '"', $svg);
$svg = preg_replace('/fill="#([a-z0-9]{3,6})"/mi', 'fill="#' . $color . '"', $svg);
$response = new DataDisplayResponse($svg, Http::STATUS_OK, ['Content-Type' => 'image/svg+xml']);
// Set cache control
$ttl = 31536000;
$response->addHeader('Cache-Control', 'max-age=' . $ttl . ', immutable');
$response->addHeader('Content-Disposition', 'inline; filename="' . $fileName . '.svg"');
$expires = new \DateTime();
$expires->setTimestamp($this->timeFactory->getTime());
$expires->add(new \DateInterval('PT' . $ttl . 'S'));
$response->addHeader('Expires', $expires->format(\DateTime::RFC1123));
$response->addHeader('Pragma', 'cache');
return $response;
}
}
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