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<?php |
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declare (strict_types = 1); |
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/** |
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* @copyright Copyright (c) 2018, John Molakvoæ ([email protected]) |
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* |
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* @author John Molakvoæ (skjnldsv) <[email protected]> |
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* |
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* @license GNU AGPL version 3 or any later version |
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* |
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* This program is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License as |
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* published by the Free Software Foundation, either version 3 of the |
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* License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License |
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* along with this program. If not, see <http://www.gnu.org/licenses/>. |
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* |
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*/ |
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namespace OC\Template; |
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use OCP\Files\IAppData; |
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use OCP\Files\NotFoundException; |
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use OCP\Files\SimpleFS\ISimpleFolder; |
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use OCP\Files\SimpleFS\ISimpleFile; |
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use OCP\ILogger; |
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use OCP\IURLGenerator; |
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use OC\Files\AppData\Factory; |
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class IconsCacher { |
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/** @var ILogger */ |
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protected $logger; |
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/** @var IAppData */ |
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protected $appData; |
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/** @var ISimpleFolder */ |
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private $folder; |
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/** @var IURLGenerator */ |
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protected $urlGenerator; |
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/** @var string */ |
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private $iconVarRE = '/--(icon-[a-z0-9-]+): url\(["\']([a-z0-9-_\~\/\?\&\=\.]+)[^;]+;/m'; |
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/** @var string */ |
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private $fileName = 'icons-vars.css'; |
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/** |
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* @param ILogger $logger |
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* @param Factory $appDataFactory |
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* @param IURLGenerator $urlGenerator |
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*/ |
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public function __construct(ILogger $logger, |
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Factory $appDataFactory, |
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IURLGenerator $urlGenerator) { |
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$this->logger = $logger; |
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$this->appData = $appDataFactory->get('css'); |
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$this->urlGenerator = $urlGenerator; |
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try { |
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$this->folder = $this->appData->getFolder('icons'); |
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} catch (NotFoundException $e) { |
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$this->folder = $this->appData->newFolder('icons'); |
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} |
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} |
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private function getIconsFromCss(string $css): array{ |
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preg_match_all($this->iconVarRE, $css, $matches, PREG_SET_ORDER); |
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$icons = []; |
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foreach ($matches as $icon) { |
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$icons[$icon[1]] = $icon[2]; |
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} |
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return $icons; |
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} |
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/** |
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* Parse and cache css |
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* |
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* @param string $css |
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*/ |
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public function setIconsCss(string $css) { |
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$cachedFile = $this->getCachedCSS(); |
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if (!$cachedFile) { |
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$currentData = ''; |
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} else { |
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$currentData = $cachedFile->getContent(); |
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} |
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// remove :root |
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$currentData = str_replace([':root {', '}'], '', $currentData); |
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$icons = $this->getIconsFromCss($currentData . $css); |
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$data = ''; |
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foreach ($icons as $icon => $url) { |
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$data .= "--$icon: url('$url?v=1');"; |
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} |
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if (strlen($data) > 0) { |
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if (!$cachedFile) { |
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$cachedFile = $this->folder->newFile($this->fileName); |
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} |
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$data = ":root { |
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$data |
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}"; |
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$cachedFile->putContent($data); |
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} |
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return preg_replace($this->iconVarRE, '', $css); |
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} |
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/** |
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* Get icons css file |
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* @return ISimpleFile|boolean |
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*/ |
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public function getCachedCSS() { |
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try { |
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return $this->folder->getFile($this->fileName); |
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} catch (NotFoundException $e) { |
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return false; |
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} |
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} |
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public function injectCss() { |
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// Only inject once |
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foreach (\OC_Util::$headers as $header) { |
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if ( |
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array_key_exists('attributes', $header) && |
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array_key_exists('href', $header['attributes']) && |
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strpos($header['attributes']['href'], $this->fileName) !== false) { |
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return; |
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} |
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} |
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$linkToCSS = substr($this->urlGenerator->linkToRoute('core.Css.getCss', ['appName' => 'icons', 'fileName' => $this->fileName]), strlen(\OC::$WEBROOT)); |
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\OC_Util::addHeader('link', ['rel' => 'stylesheet', 'href' => $linkToCSS], null, true); |
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} |
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} |
nextcloud /
server
There are different options of fixing this problem.
If you want to be on the safe side, you can add an additional type-check:
If you are sure that the expression is traversable, you might want to add a doc comment cast to improve IDE auto-completion and static analysis:
Mark the issue as a false-positive: Just hover the remove button, in the top-right corner of this issue for more options.