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263 lines
7.2 KiB
263 lines
7.2 KiB
<?php |
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declare (strict_types = 1); |
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/** |
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* @copyright Copyright (c) 2018, John Molakvoæ (skjnldsv@protonmail.com) |
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* |
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* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com> |
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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\AppFramework\Utility\ITimeFactory; |
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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 ITimeFactory */ |
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protected $timeFactory; |
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/** @var string */ |
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private $iconVarRE = '/--(icon-[a-zA-Z0-9-]+):\s?url\(["\']?([a-zA-Z0-9-_\~\/\.\?\&\=\:\;\+\,]+)[^;]+;/m'; |
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/** @var string */ |
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private $fileName = 'icons-vars.css'; |
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private $iconList = 'icons-list.template'; |
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private $cachedCss; |
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private $cachedList; |
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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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* @param ITimeFactory $timeFactory |
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* @throws \OCP\Files\NotPermittedException |
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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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ITimeFactory $timeFactory) { |
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$this->logger = $logger; |
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$this->appData = $appDataFactory->get('css'); |
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$this->urlGenerator = $urlGenerator; |
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$this->timeFactory = $timeFactory; |
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try { |
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$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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* @param string $css |
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* @return string |
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* @throws NotFoundException |
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* @throws \OCP\Files\NotPermittedException |
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*/ |
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public function setIconsCss(string $css): string { |
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$cachedFile = $this->getCachedList(); |
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if (!$cachedFile) { |
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$currentData = ''; |
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$cachedFile = $this->folder->newFile($this->iconList); |
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} else { |
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$currentData = $cachedFile->getContent(); |
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} |
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$cachedVarsCssFile = $this->getCachedCSS(); |
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if (!$cachedVarsCssFile) { |
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$cachedVarsCssFile = $this->folder->newFile($this->fileName); |
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} |
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$icons = $this->getIconsFromCss($currentData . $css); |
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$data = ''; |
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$list = ''; |
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foreach ($icons as $icon => $url) { |
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$list .= "--$icon: url('$url');"; |
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list($location,$color) = $this->parseUrl($url); |
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$svg = false; |
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if ($location !== '' && \file_exists($location)) { |
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$svg = \file_get_contents($location); |
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} |
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if ($svg === false) { |
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$this->logger->debug('Failed to get icon file ' . $location); |
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$data .= "--$icon: url('$url');"; |
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continue; |
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} |
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$encode = base64_encode($this->colorizeSvg($svg, $color)); |
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$data .= '--' . $icon . ': url(data:image/svg+xml;base64,' . $encode . ');'; |
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} |
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if (\strlen($data) > 0 && \strlen($list) > 0) { |
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$data = ":root {\n$data\n}"; |
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$cachedVarsCssFile->putContent($data); |
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$list = ":root {\n$list\n}"; |
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$cachedFile->putContent($list); |
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$this->cachedList = null; |
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$this->cachedCss = null; |
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} |
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return preg_replace($this->iconVarRE, '', $css); |
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} |
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/** |
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* @param $url |
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* @return array |
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*/ |
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private function parseUrl($url): array { |
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$location = ''; |
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$color = ''; |
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$base = $this->getRoutePrefix() . '/svg/'; |
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$cleanUrl = \substr($url, \strlen($base)); |
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if (\strpos($url, $base . 'core') === 0) { |
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$cleanUrl = \substr($cleanUrl, \strlen('core')); |
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if (\preg_match('/\/([a-zA-Z0-9-_\~\/\.\=\:\;\+\,]+)\?color=([0-9a-fA-F]{3,6})/', $cleanUrl, $matches)) { |
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list(,$cleanUrl,$color) = $matches; |
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$location = \OC::$SERVERROOT . '/core/img/' . $cleanUrl . '.svg'; |
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} |
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} elseif (\strpos($url, $base) === 0) { |
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if(\preg_match('/([A-z0-9\_\-]+)\/([a-zA-Z0-9-_\~\/\.\=\:\;\+\,]+)\?color=([0-9a-fA-F]{3,6})/', $cleanUrl, $matches)) { |
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list(,$app,$cleanUrl, $color) = $matches; |
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$location = \OC_App::getAppPath($app) . '/img/' . $cleanUrl . '.svg'; |
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if ($app === 'settings') { |
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$location = \OC::$SERVERROOT . '/settings/img/' . $cleanUrl . '.svg'; |
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} |
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} |
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} |
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return [ |
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$location, |
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$color |
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]; |
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} |
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/** |
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* @param $svg |
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* @param $color |
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* @return string |
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*/ |
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public function colorizeSvg($svg, $color): string { |
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if (!preg_match('/^[0-9a-f]{3,6}$/i', $color)) { |
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// Prevent not-sane colors from being written into the SVG |
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$color = '000'; |
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} |
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// add fill (fill is not present on black elements) |
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$fillRe = '/<((circle|rect|path)((?!fill)[a-z0-9 =".\-#():;,])+)\/>/mi'; |
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$svg = preg_replace($fillRe, '<$1 fill="#' . $color . '"/>', $svg); |
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// replace any fill or stroke colors |
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$svg = preg_replace('/stroke="#([a-z0-9]{3,6})"/mi', 'stroke="#' . $color . '"', $svg); |
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$svg = preg_replace('/fill="#([a-z0-9]{3,6})"/mi', 'fill="#' . $color . '"', $svg); |
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return $svg; |
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} |
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private function getRoutePrefix() { |
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$frontControllerActive = (\OC::$server->getConfig()->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true'); |
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$prefix = \OC::$WEBROOT . '/index.php'; |
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if ($frontControllerActive) { |
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$prefix = \OC::$WEBROOT; |
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} |
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return $prefix; |
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} |
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/** |
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* Get icons css file |
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* @return ISimpleFile|boolean |
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*/ |
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public function getCachedCSS() { |
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try { |
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if (!$this->cachedCss) { |
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$this->cachedCss = $this->folder->getFile($this->fileName); |
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} |
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return $this->cachedCss; |
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} catch (NotFoundException $e) { |
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return false; |
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} |
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} |
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/** |
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* Get icon-vars list template |
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* @return ISimpleFile|boolean |
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*/ |
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public function getCachedList() { |
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try { |
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if (!$this->cachedList) { |
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$this->cachedList = $this->folder->getFile($this->iconList); |
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} |
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return $this->cachedList; |
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} catch (NotFoundException $e) { |
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return false; |
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} |
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} |
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/** |
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* Add the icons cache css into the header |
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*/ |
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public function injectCss() { |
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$mtime = $this->timeFactory->getTime(); |
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$file = $this->getCachedList(); |
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if ($file) { |
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$mtime = $file->getMTime(); |
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} |
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// Only inject once |
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foreach (\OC_Util::$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 = $this->urlGenerator->linkToRoute('core.Css.getCss', ['appName' => 'icons', 'fileName' => $this->fileName, 'v' => $mtime]); |
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\OC_Util::addHeader('link', ['rel' => 'stylesheet', 'href' => $linkToCSS], null, true); |
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} |
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}
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