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<?php |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Jörn Friedrich Dreyer <[email protected]> |
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* @author Lukas Reschke <[email protected]> |
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* @author Morris Jobke <[email protected]> |
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* @author Robin Appelman <[email protected]> |
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* @author Robin McCorkell <[email protected]> |
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* @author Vincent Petry <[email protected]> |
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* |
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* @license AGPL-3.0 |
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* |
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* This code 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, version 3, |
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* as published by the Free Software Foundation. |
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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, version 3, |
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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\Files\Storage\Wrapper; |
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use OCP\Files\Cache\ICacheEntry; |
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use OCP\Files\Storage\IStorage; |
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class Quota extends Wrapper { |
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/** |
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* @var int $quota |
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*/ |
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protected $quota; |
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/** |
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* @var string $sizeRoot |
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*/ |
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protected $sizeRoot; |
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/** |
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* @param array $parameters |
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*/ |
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public function __construct($parameters) { |
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parent::__construct($parameters); |
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$this->quota = $parameters['quota']; |
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$this->sizeRoot = isset($parameters['root']) ? $parameters['root'] : ''; |
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} |
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/** |
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* @return int quota value |
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*/ |
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public function getQuota() { |
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return $this->quota; |
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} |
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/** |
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* @param string $path |
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* @param \OC\Files\Storage\Storage $storage |
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*/ |
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protected function getSize($path, $storage = null) { |
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if (is_null($storage)) { |
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$cache = $this->getCache(); |
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} else { |
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$cache = $storage->getCache(); |
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} |
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$data = $cache->get($path); |
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if ($data instanceof ICacheEntry and isset($data['size'])) { |
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return $data['size']; |
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} else { |
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return \OCP\Files\FileInfo::SPACE_NOT_COMPUTED; |
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} |
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} |
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/** |
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* Get free space as limited by the quota |
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* |
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* @param string $path |
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* @return int |
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*/ |
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public function free_space($path) { |
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if ($this->quota < 0 || strpos($path, 'cache') === 0) { |
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return $this->storage->free_space($path); |
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} else { |
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$used = $this->getSize($this->sizeRoot); |
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if ($used < 0) { |
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return \OCP\Files\FileInfo::SPACE_NOT_COMPUTED; |
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} else { |
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$free = $this->storage->free_space($path); |
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$quotaFree = max($this->quota - $used, 0); |
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// if free space is known |
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if ($free >= 0) { |
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$free = min($free, $quotaFree); |
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} else { |
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$free = $quotaFree; |
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} |
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return $free; |
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} |
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} |
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} |
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/** |
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* see http://php.net/manual/en/function.file_put_contents.php |
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* |
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* @param string $path |
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* @param string $data |
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* @return bool |
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*/ |
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public function file_put_contents($path, $data) { |
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$free = $this->free_space($path); |
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if ($free < 0 or strlen($data) < $free) { |
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return $this->storage->file_put_contents($path, $data); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* see http://php.net/manual/en/function.copy.php |
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* |
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* @param string $source |
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* @param string $target |
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* @return bool |
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*/ |
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View Code Duplication |
public function copy($source, $target) { |
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$free = $this->free_space($target); |
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if ($free < 0 or $this->getSize($source) < $free) { |
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return $this->storage->copy($source, $target); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* see http://php.net/manual/en/function.fopen.php |
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* |
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* @param string $path |
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* @param string $mode |
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* @return resource |
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*/ |
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public function fopen($path, $mode) { |
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$source = $this->storage->fopen($path, $mode); |
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// don't apply quota for part files |
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if (!$this->isPartFile($path)) { |
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$free = $this->free_space($path); |
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if ($source && $free >= 0 && $mode !== 'r' && $mode !== 'rb') { |
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// only apply quota for files, not metadata, trash or others |
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if (strpos(ltrim($path, '/'), 'files/') === 0) { |
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return \OC\Files\Stream\Quota::wrap($source, $free); |
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} |
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} |
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} |
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return $source; |
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} |
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/** |
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* Checks whether the given path is a part file |
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* |
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* @param string $path Path that may identify a .part file |
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* @return string File path without .part extension |
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* @note this is needed for reusing keys |
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*/ |
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private function isPartFile($path) { |
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$extension = pathinfo($path, PATHINFO_EXTENSION); |
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return ($extension === 'part'); |
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} |
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/** |
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* @param IStorage $sourceStorage |
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* @param string $sourceInternalPath |
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* @param string $targetInternalPath |
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* @return bool |
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*/ |
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View Code Duplication |
public function copyFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) { |
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$free = $this->free_space($targetInternalPath); |
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if ($free < 0 or $this->getSize($sourceInternalPath, $sourceStorage) < $free) { |
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return $this->storage->copyFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* @param IStorage $sourceStorage |
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* @param string $sourceInternalPath |
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* @param string $targetInternalPath |
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* @return bool |
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*/ |
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View Code Duplication |
public function moveFromStorage(IStorage $sourceStorage, $sourceInternalPath, $targetInternalPath) { |
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$free = $this->free_space($targetInternalPath); |
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if ($free < 0 or $this->getSize($sourceInternalPath, $sourceStorage) < $free) { |
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return $this->storage->moveFromStorage($sourceStorage, $sourceInternalPath, $targetInternalPath); |
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} else { |
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return false; |
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} |
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} |
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public function mkdir($path) { |
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if ($this->quota === 0.0) { |
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return false; |
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} |
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return parent::mkdir($path); |
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} |
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} |
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nextcloud /
server
Loading history...
PHP has two types of connecting operators (logical operators, and boolean operators):
and&&or||The difference between these is the order in which they are executed. In most cases, you would want to use a boolean operator like
&&, or||.Let’s take a look at a few examples:
Logical Operators are used for Control-Flow
One case where you explicitly want to use logical operators is for control-flow such as this:
Since
dieintroduces problems of its own, f.e. it makes our code hardly testable, and prevents any kind of more sophisticated error handling; you probably do not want to use this in real-world code. Unfortunately, logical operators cannot be combined withthrowat this point:These limitations lead to logical operators rarely being of use in current PHP code.