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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author Joas Schilling <[email protected]>  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright Copyright (c) 2016, ownCloud, Inc.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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 OCA\Activity\Formatter;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCA\Activity\ViewInfoCache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\Activity\IEvent;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IL10N;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\IURLGenerator;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use OCP\Util;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class FileFormatter implements IFormatter { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/** @var ViewInfoCache */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $infoCache;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/** @var IURLGenerator */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $urlGenerator;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/** @var IL10N */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $l;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/** @var string */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected $user;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param ViewInfoCache $infoCache  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param IURLGenerator $urlGenerator  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param IL10N $l  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $user  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                	 */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	public function __construct(ViewInfoCache $infoCache, IURLGenerator $urlGenerator, IL10N $l, $user) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->infoCache = $infoCache;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->urlGenerator = $urlGenerator;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->l = $l;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                		$this->user = $user;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param IEvent $event  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $parameter The parameter to be formatted  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return string The formatted parameter  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	public function format(IEvent $event, $parameter) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$param = $this->fixLegacyFilename($parameter);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// If the activity is about the very same file, we use the current path  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		// for the link generation instead of the one that was saved.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$fileId = '';  | 
            
                            
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                		if (is_array($param)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$fileId = key($param);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$param = $param[$fileId];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$info = $this->infoCache->getInfoById($this->user, $fileId, $param);  | 
            
                            
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                		} elseif ($event->getObjectType() === 'files' && $event->getObjectName() === $param) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$fileId = $event->getObjectId();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$info = $this->infoCache->getInfoById($this->user, $fileId, $param);  | 
            
                            
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                		} else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$info = $this->infoCache->getInfoByPath($this->user, $param);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			$fileId = $info['fileid'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$param = trim($param, '/');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		$fileLink = $this->urlGenerator->linkToRouteAbsolute('files.viewcontroller.showFile', ['fileId' => $fileId]); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return '<file link="' . $fileLink . '" id="' . Util::sanitizeHTML($fileId) . '">' . Util::sanitizeHTML($param) . '</file>';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Prepend leading slash to filenames of legacy activities  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string|array $filename  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return string|array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	protected function fixLegacyFilename($filename) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (is_array($filename)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			// 9.0: [fileId => path]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return $filename;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (strpos($filename, '/') !== 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return '/' . $filename;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return $filename;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	/**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * Split the path from the filename string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @param string $filename  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 * @return array Array with path and filename  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                             6                          | 
                
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                	protected function splitPathFromFilename($filename) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		if (strrpos($filename, '/') !== false) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				trim(substr($filename, 0, strrpos($filename, '/')), '/'),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                				substr($filename, strrpos($filename, '/') + 1),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                			);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		}  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                		return array('', $filename); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                	}  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                }  | 
            
            
                                                        
            
                                    
            
            
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This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.