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<?php |
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namespace Knik\Flysystem\Gameap; |
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use League\Flysystem\Config; |
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use League\Flysystem\Util; |
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use InvalidArgumentException; |
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use League\Flysystem\AdapterInterface; |
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class GameapAdapter extends GameapAbstractAdapter |
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{ |
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/** |
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* @var array |
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*/ |
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protected $configurable = [ |
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'host', |
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'port', |
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'username', |
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'password', |
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'privateKey', |
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'privateKeyPass', |
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'timeout', |
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'root', |
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]; |
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/** |
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* @return bool |
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* @throws \Exception |
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*/ |
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public function isConnected() |
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{ |
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return !empty($this->connection); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function write($path, $contents, Config $config) |
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{ |
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if (! $this->upload($path, $contents, $config)) { |
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return false; |
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} |
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return compact('contents', 'path'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function writeStream($path, $resource, Config $config) |
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{ |
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if (! $this->upload($path, $resource, $config)) { |
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return false; |
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} |
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return compact( 'path'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function update($path, $contents, Config $config) |
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{ |
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return $this->upload($path, $contents, $config); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function updateStream($path, $resource, Config $config) |
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{ |
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return $this->upload($path, $resource, $config); |
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} |
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/** |
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* Upload a file. |
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* |
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* @param string $path |
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* @param string|resource $contents |
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* @param Config $config |
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* @return bool |
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*/ |
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public function upload($path, $contents, Config $config) |
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{ |
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$path = $this->applyPathPrefix($path); |
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$config = Util::ensureConfig($config); |
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$visibility = $config->get('visibility') ?: 'public'; |
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$permissions = $this->{'perm' . ucfirst($visibility)}; |
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if (is_resource($contents)) { |
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$result = $this->getConnection()->put($contents, $path, $permissions); |
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} else if (is_string($contents)) { |
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$fp = fopen('php://temp', 'w+b'); |
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fwrite($fp, $contents); |
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rewind($fp); |
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$result = $this->getConnection()->put($fp, $path, $permissions); |
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} else { |
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throw new InvalidArgumentException('Invalid contents'); |
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} |
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return $result; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function rename($path, $newpath) |
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{ |
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$path = $this->applyPathPrefix($path); |
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$newpath = $this->applyPathPrefix($newpath); |
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$this->getConnection()->rename($path, $newpath); |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function copy($path, $newpath) |
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{ |
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$path = $this->applyPathPrefix($path); |
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$newpath = $this->applyPathPrefix($newpath); |
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return $this->getConnection()->copy($path, $newpath); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function delete($path) |
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{ |
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$path = $this->applyPathPrefix($path); |
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return $this->getConnection()->delete($path, true); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function deleteDir($dirname) |
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{ |
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return $this->delete($dirname); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function createDir($dirname, Config $config) |
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{ |
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$dirname = $this->applyPathPrefix($dirname); |
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$config = Util::ensureConfig($config); |
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$visibility = $config->get('visibility') ?: 'public'; |
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$permissions = $this->{'perm'.ucfirst($visibility)}; |
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$this->getConnection()->mkdir($dirname, $permissions); |
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return ['path' => $dirname]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setVisibility($path, $visibility) |
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{ |
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$location = $this->applyPathPrefix($path); |
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$visibility = ucfirst($visibility); |
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if (! isset($this->{'perm'.$visibility})) { |
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throw new InvalidArgumentException('Unknown visibility: '.$visibility); |
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} |
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$permissions = $this->{'perm'.$visibility}; |
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if ($this->getConnection()->chmod($permissions, $location)) { |
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return compact('path', 'visibility'); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function has($path) |
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{ |
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$fullPath = $this->applyPathPrefix($path); |
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return $this->getConnection()->exist($fullPath); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function read($path) |
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{ |
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$object = $this->readStream($path); |
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$object['contents'] = stream_get_contents($object['stream']); |
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fclose($object['stream']); |
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unset($object['stream']); |
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return $object; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function readStream($path) |
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{ |
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$location = $this->applyPathPrefix($path); |
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$fileHandle = fopen('php://temp', 'w+b'); |
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$stream = $this->getConnection()->get($location, $fileHandle); |
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return compact('stream', 'path'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function listContents($directory = '', $recursive = false) |
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{ |
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$directory = $this->applyPathPrefix($directory); |
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$listing = $this->getConnection()->directoryContents($directory); |
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$result = []; |
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foreach ($listing as $object) { |
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$path = empty($directory) ? $object['name'] : $this->applyPathPrefix($object['name']); |
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$result[] = $this->normalizeListingObject($path, $object); |
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if ($recursive && isset($object['type']) && $object['type'] === 'dir') { |
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$result = array_merge($result, $this->listContents($path)); |
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} |
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} |
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return $result; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getMetadata($path) |
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{ |
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$fullPath = $this->applyPathPrefix($path); |
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$meta = $this->getConnection()->metadata($fullPath); |
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return [ |
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'path' => $path, |
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'size' => $meta['size'], |
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'type' => $meta['type'], |
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'timestamp' => $meta['mtime'], |
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'visibility' => $meta['permissions'] & (0777 ^ $this->permPrivate) ? AdapterInterface::VISIBILITY_PUBLIC : AdapterInterface::VISIBILITY_PRIVATE, |
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'mimetype' => $meta['mimetype'], |
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]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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3 |
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public function getSize($path) |
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{ |
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return $this->getMetadata($path); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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3 |
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public function getMimetype($path) |
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{ |
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$fullPath = $this->applyPathPrefix($path); |
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$meta = $this->getConnection()->metadata($fullPath); |
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$mimetype = $meta['mimetype']; |
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if (empty($mimetype)) { |
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$data = $this->read($path); |
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$mimetype = Util::guessMimeType($path, $data['contents']); |
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} |
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return compact('mimetype', 'path'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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3 |
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public function getTimestamp($path) |
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{ |
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return $this->getMetadata($path); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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303
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6 |
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public function getVisibility($path) |
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{ |
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6 |
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return $this->getMetadata($path); |
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} |
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307
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} |
If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design.
Let’s take a look at an example:
Our function
my_functionexpects aPostobject, and outputs the author of the post. The base classPostreturns a simple string and outputting a simple string will work just fine. However, the child classBlogPostwhich is a sub-type ofPostinstead decided to return anobject, and is therefore violating the SOLID principles. If aBlogPostwere passed tomy_function, PHP would not complain, but ultimately fail when executing thestrtouppercall in its body.