| Total Complexity | 50 | 
| Total Lines | 395 | 
| Duplicated Lines | 0 % | 
| Changes | 0 | ||
Complex classes like FilesReportPlugin often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use FilesReportPlugin, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 44 | class FilesReportPlugin extends ServerPlugin { | 
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| 45 | |||
| 46 | // namespace  | 
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| 47 | const NS_OWNCLOUD = 'http://owncloud.org/ns';  | 
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| 48 | 	const REPORT_NAME            = '{http://owncloud.org/ns}filter-files'; | 
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| 49 | 	const SYSTEMTAG_PROPERTYNAME = '{http://owncloud.org/ns}systemtag'; | 
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| 50 | 	const CIRCLE_PROPERTYNAME = '{http://owncloud.org/ns}circle'; | 
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| 51 | |||
| 52 | /**  | 
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| 53 | * Reference to main server object  | 
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| 54 | *  | 
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| 55 | * @var \Sabre\DAV\Server  | 
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| 56 | */  | 
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| 57 | private $server;  | 
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| 58 | |||
| 59 | /**  | 
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| 60 | * @var Tree  | 
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| 61 | */  | 
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| 62 | private $tree;  | 
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| 63 | |||
| 64 | /**  | 
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| 65 | * @var View  | 
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| 66 | */  | 
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| 67 | private $fileView;  | 
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| 68 | |||
| 69 | /**  | 
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| 70 | * @var ISystemTagManager  | 
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| 71 | */  | 
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| 72 | private $tagManager;  | 
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| 73 | |||
| 74 | /**  | 
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| 75 | * @var ISystemTagObjectMapper  | 
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| 76 | */  | 
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| 77 | private $tagMapper;  | 
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| 78 | |||
| 79 | /**  | 
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| 80 | * Manager for private tags  | 
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| 81 | *  | 
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| 82 | * @var ITagManager  | 
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| 83 | */  | 
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| 84 | private $fileTagger;  | 
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| 85 | |||
| 86 | /**  | 
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| 87 | * @var IUserSession  | 
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| 88 | */  | 
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| 89 | private $userSession;  | 
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| 90 | |||
| 91 | /**  | 
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| 92 | * @var IGroupManager  | 
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| 93 | */  | 
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| 94 | private $groupManager;  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | * @var Folder  | 
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| 98 | */  | 
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| 99 | private $userFolder;  | 
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| 100 | |||
| 101 | /**  | 
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| 102 | * @var IAppManager  | 
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| 103 | */  | 
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| 104 | private $appManager;  | 
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| 105 | |||
| 106 | /**  | 
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| 107 | * @param Tree $tree  | 
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| 108 | * @param View $view  | 
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| 109 | * @param ISystemTagManager $tagManager  | 
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| 110 | * @param ISystemTagObjectMapper $tagMapper  | 
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| 111 | * @param ITagManager $fileTagger manager for private tags  | 
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| 112 | * @param IUserSession $userSession  | 
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| 113 | * @param IGroupManager $groupManager  | 
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| 114 | * @param Folder $userFolder  | 
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| 115 | * @param IAppManager $appManager  | 
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| 116 | */  | 
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| 117 | public function __construct(Tree $tree,  | 
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| 118 | View $view,  | 
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| 119 | ISystemTagManager $tagManager,  | 
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| 120 | ISystemTagObjectMapper $tagMapper,  | 
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| 121 | ITagManager $fileTagger,  | 
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| 122 | IUserSession $userSession,  | 
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| 123 | IGroupManager $groupManager,  | 
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| 124 | Folder $userFolder,  | 
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| 125 | IAppManager $appManager  | 
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| 126 | 	) { | 
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| 127 | $this->tree = $tree;  | 
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| 128 | $this->fileView = $view;  | 
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| 129 | $this->tagManager = $tagManager;  | 
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| 130 | $this->tagMapper = $tagMapper;  | 
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| 131 | $this->fileTagger = $fileTagger;  | 
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| 132 | $this->userSession = $userSession;  | 
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| 133 | $this->groupManager = $groupManager;  | 
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| 134 | $this->userFolder = $userFolder;  | 
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| 135 | $this->appManager = $appManager;  | 
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| 136 | }  | 
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| 137 | |||
| 138 | /**  | 
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| 139 | * This initializes the plugin.  | 
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| 140 | *  | 
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| 141 | * This function is called by \Sabre\DAV\Server, after  | 
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| 142 | * addPlugin is called.  | 
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| 143 | *  | 
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| 144 | * This method should set up the required event subscriptions.  | 
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| 145 | *  | 
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| 146 | * @param \Sabre\DAV\Server $server  | 
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| 147 | * @return void  | 
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| 148 | */  | 
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| 149 | 	public function initialize(\Sabre\DAV\Server $server) { | 
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| 150 | |||
| 151 | $server->xml->namespaceMap[self::NS_OWNCLOUD] = 'oc';  | 
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| 152 | |||
| 153 | $this->server = $server;  | 
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| 154 | 		$this->server->on('report', array($this, 'onReport')); | 
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| 155 | }  | 
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| 156 | |||
| 157 | /**  | 
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| 158 | * Returns a list of reports this plugin supports.  | 
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| 159 | *  | 
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| 160 | 	 * This will be used in the {DAV:}supported-report-set property. | 
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| 161 | *  | 
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| 162 | * @param string $uri  | 
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| 163 | * @return array  | 
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| 164 | */  | 
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| 165 | 	public function getSupportedReportSet($uri) { | 
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| 166 | return [self::REPORT_NAME];  | 
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| 167 | }  | 
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| 168 | |||
| 169 | /**  | 
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| 170 | * REPORT operations to look for files  | 
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| 171 | *  | 
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| 172 | * @param string $reportName  | 
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| 173 | * @param $report  | 
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| 174 | * @param string $uri  | 
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| 175 | * @return bool  | 
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| 176 | * @throws BadRequest  | 
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| 177 | * @throws PreconditionFailed  | 
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| 178 | * @internal param $ [] $report  | 
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| 179 | */  | 
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| 180 | 	public function onReport($reportName, $report, $uri) { | 
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| 181 | $reportTargetNode = $this->server->tree->getNodeForPath($uri);  | 
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| 182 | 		if (!$reportTargetNode instanceof Directory || $reportName !== self::REPORT_NAME) { | 
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| 183 | return;  | 
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| 184 | }  | 
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| 185 | |||
| 186 | 		$ns = '{' . $this::NS_OWNCLOUD . '}'; | 
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| 187 | $requestedProps = [];  | 
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| 188 | $filterRules = [];  | 
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| 189 | |||
| 190 | // parse report properties and gather filter info  | 
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| 191 | 		foreach ($report as $reportProps) { | 
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| 192 | $name = $reportProps['name'];  | 
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| 193 | 			if ($name === $ns . 'filter-rules') { | 
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| 194 | $filterRules = $reportProps['value'];  | 
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| 195 | 			} else if ($name === '{DAV:}prop') { | 
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| 196 | // propfind properties  | 
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| 197 | 				foreach ($reportProps['value'] as $propVal) { | 
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| 198 | $requestedProps[] = $propVal['name'];  | 
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| 199 | }  | 
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| 200 | }  | 
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| 201 | }  | 
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| 202 | |||
| 203 | 		if (empty($filterRules)) { | 
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| 204 | // an empty filter would return all existing files which would be slow  | 
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| 205 | 			throw new BadRequest('Missing filter-rule block in request'); | 
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| 206 | }  | 
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| 207 | |||
| 208 | // gather all file ids matching filter  | 
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| 209 | 		try { | 
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| 210 | $resultFileIds = $this->processFilterRules($filterRules);  | 
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| 211 | 		} catch (TagNotFoundException $e) { | 
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| 212 | 			throw new PreconditionFailed('Cannot filter by non-existing tag', 0, $e); | 
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                         | 
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| 213 | }  | 
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| 214 | |||
| 215 | // find sabre nodes by file id, restricted to the root node path  | 
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| 216 | $results = $this->findNodesByFileIds($reportTargetNode, $resultFileIds);  | 
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| 217 | |||
| 218 | $filesUri = $this->getFilesBaseUri($uri, $reportTargetNode->getPath());  | 
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| 219 | $responses = $this->prepareResponses($filesUri, $requestedProps, $results);  | 
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| 220 | |||
| 221 | $xml = $this->server->xml->write(  | 
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| 222 | 			'{DAV:}multistatus', | 
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| 223 | new MultiStatus($responses)  | 
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| 224 | );  | 
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| 225 | |||
| 226 | $this->server->httpResponse->setStatus(207);  | 
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| 227 | 		$this->server->httpResponse->setHeader('Content-Type', 'application/xml; charset=utf-8'); | 
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| 228 | $this->server->httpResponse->setBody($xml);  | 
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| 229 | |||
| 230 | return false;  | 
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| 231 | }  | 
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| 232 | |||
| 233 | /**  | 
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| 234 | * Returns the base uri of the files root by removing  | 
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| 235 | * the subpath from the URI  | 
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| 236 | *  | 
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| 237 | * @param string $uri URI from this request  | 
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| 238 | * @param string $subPath subpath to remove from the URI  | 
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| 239 | *  | 
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| 240 | * @return string files base uri  | 
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| 241 | */  | 
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| 242 | 	private function getFilesBaseUri($uri, $subPath) { | 
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| 243 | $uri = trim($uri, '/');  | 
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| 244 | $subPath = trim($subPath, '/');  | 
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| 245 | 		if (empty($subPath)) { | 
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| 246 | $filesUri = $uri;  | 
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| 247 | 		} else { | 
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| 248 | $filesUri = substr($uri, 0, strlen($uri) - strlen($subPath));  | 
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| 249 | }  | 
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| 250 | $filesUri = trim($filesUri, '/');  | 
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| 251 | 		if (empty($filesUri)) { | 
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| 252 | return '';  | 
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| 253 | }  | 
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| 254 | return '/' . $filesUri;  | 
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| 255 | }  | 
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| 256 | |||
| 257 | /**  | 
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| 258 | * Find file ids matching the given filter rules  | 
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| 259 | *  | 
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| 260 | * @param array $filterRules  | 
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| 261 | * @return array array of unique file id results  | 
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| 262 | *  | 
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| 263 | * @throws TagNotFoundException whenever a tag was not found  | 
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| 264 | */  | 
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| 265 | 	protected function processFilterRules($filterRules) { | 
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| 266 | 		$ns = '{' . $this::NS_OWNCLOUD . '}'; | 
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| 267 | $resultFileIds = null;  | 
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| 268 | $systemTagIds = [];  | 
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| 269 | $circlesIds = [];  | 
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| 270 | $favoriteFilter = null;  | 
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| 271 | 		foreach ($filterRules as $filterRule) { | 
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| 272 | 			if ($filterRule['name'] === $ns . 'systemtag') { | 
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| 273 | $systemTagIds[] = $filterRule['value'];  | 
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| 274 | }  | 
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| 275 | 			if ($filterRule['name'] === self::CIRCLE_PROPERTYNAME) { | 
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| 276 | $circlesIds[] = $filterRule['value'];  | 
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| 277 | }  | 
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| 278 | 			if ($filterRule['name'] === $ns . 'favorite') { | 
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| 279 | $favoriteFilter = true;  | 
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| 280 | }  | 
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| 281 | |||
| 282 | }  | 
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| 283 | |||
| 284 | 		if ($favoriteFilter !== null) { | 
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| 285 | 			$resultFileIds = $this->fileTagger->load('files')->getFavorites(); | 
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| 286 | 			if (empty($resultFileIds)) { | 
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| 287 | return [];  | 
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| 288 | }  | 
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| 289 | }  | 
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| 290 | |||
| 291 | 		if (!empty($systemTagIds)) { | 
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| 292 | $fileIds = $this->getSystemTagFileIds($systemTagIds);  | 
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| 293 | 			if (empty($resultFileIds)) { | 
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| 294 | $resultFileIds = $fileIds;  | 
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| 295 | 			} else { | 
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| 296 | $resultFileIds = array_intersect($fileIds, $resultFileIds);  | 
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| 297 | }  | 
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| 298 | }  | 
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| 299 | |||
| 300 | 		if (!empty($circlesIds)) { | 
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| 301 | $fileIds = $this->getCirclesFileIds($circlesIds);  | 
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| 302 | 			if (empty($resultFileIds)) { | 
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| 303 | $resultFileIds = $fileIds;  | 
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| 304 | 			} else { | 
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| 305 | $resultFileIds = array_intersect($fileIds, $resultFileIds);  | 
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| 306 | }  | 
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| 307 | }  | 
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| 308 | |||
| 309 | return $resultFileIds;  | 
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| 310 | }  | 
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| 311 | |||
| 312 | 	private function getSystemTagFileIds($systemTagIds) { | 
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| 353 | }  | 
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| 354 | |||
| 355 | /**  | 
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| 356 | * @suppress PhanUndeclaredClassMethod  | 
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| 357 | * @param array $circlesIds  | 
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| 358 | * @return array  | 
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| 359 | */  | 
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| 360 | 	private function getCirclesFileIds(array $circlesIds) { | 
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| 365 | }  | 
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| 366 | |||
| 367 | |||
| 368 | /**  | 
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| 369 | * Prepare propfind response for the given nodes  | 
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| 370 | *  | 
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| 371 | * @param string $filesUri $filesUri URI leading to root of the files URI,  | 
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| 372 | * with a leading slash but no trailing slash  | 
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| 373 | * @param string[] $requestedProps requested properties  | 
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| 374 | * @param Node[] nodes nodes for which to fetch and prepare responses  | 
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| 375 | * @return Response[]  | 
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| 376 | */  | 
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| 377 | 	public function prepareResponses($filesUri, $requestedProps, $nodes) { | 
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| 399 | }  | 
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| 400 | |||
| 401 | /**  | 
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| 402 | * Find Sabre nodes by file ids  | 
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| 403 | *  | 
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| 404 | * @param Node $rootNode root node for search  | 
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| 405 | * @param array $fileIds file ids  | 
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| 406 | * @return Node[] array of Sabre nodes  | 
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| 407 | */  | 
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| 408 | 	public function findNodesByFileIds($rootNode, $fileIds) { | 
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| 428 | }  | 
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| 429 | |||
| 430 | /**  | 
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| 431 | * Returns whether the currently logged in user is an administrator  | 
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| 432 | */  | 
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| 433 | 	private function isAdmin() { | 
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| 439 | }  | 
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| 440 | }  | 
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| 441 | 
This check compares calls to functions or methods with their respective definitions. If the call has more arguments than are defined, it raises an issue.
If a function is defined several times with a different number of parameters, the check may pick up the wrong definition and report false positives. One codebase where this has been known to happen is Wordpress. Please note the @ignore annotation hint above.