105 lines
2.4 KiB
PHP
105 lines
2.4 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
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*
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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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\Preview;
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use OCP\Files\File;
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use OCP\Files\Node;
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use OCP\Files\Folder;
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use OCP\Files\IAppData;
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use OCP\Files\NotFoundException;
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/**
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* Class Watcher
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*
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* @package OC\Preview
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*
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* Class that will watch filesystem activity and remove previews as needed.
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*/
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class Watcher {
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/** @var IAppData */
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private $appData;
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/** @var int[] */
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private $toDelete = [];
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/**
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* Watcher constructor.
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*
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* @param IAppData $appData
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*/
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public function __construct(IAppData $appData) {
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$this->appData = $appData;
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}
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public function postWrite(Node $node) {
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// We only handle files
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if ($node instanceof Folder) {
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return;
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}
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try {
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$folder = $this->appData->getFolder($node->getId());
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$folder->delete();
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} catch (NotFoundException $e) {
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//Nothing to do
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}
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}
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public function preDelete(Node $node) {
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// To avoid cycles
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if ($this->toDelete !== []) {
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return;
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}
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if ($node instanceof File) {
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$this->toDelete[] = $node->getId();
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return;
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}
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/** @var Folder $node */
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$this->deleteFolder($node);
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}
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private function deleteFolder(Folder $folder) {
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$nodes = $folder->getDirectoryListing();
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foreach ($nodes as $node) {
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if ($node instanceof File) {
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$this->toDelete[] = $node->getId();
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} else if ($node instanceof Folder) {
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$this->deleteFolder($node);
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}
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}
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}
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public function postDelete(Node $node) {
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foreach ($this->toDelete as $fid) {
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try {
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$folder = $this->appData->getFolder($fid);
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$folder->delete();
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} catch (NotFoundException $e) {
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// continue
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}
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}
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}
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}
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