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<?php |
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namespace JK\SamBundle\Watcher\Indexer; |
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use Exception; |
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use SplFileInfo; |
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use Symfony\Component\Filesystem\Filesystem; |
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use Symfony\Component\Finder\Finder; |
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class FileIndexer implements FileIndexerInterface |
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{ |
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/** |
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* @var integer[] |
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*/ |
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protected $index = []; |
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/** |
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* @var SplFileInfo[] |
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*/ |
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protected $changes = []; |
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/** |
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* Index a given directory : add each found files (according to the given extension) to the index. |
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* |
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* @param array $directories |
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* @param array $extensions |
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* |
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* @throws Exception |
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*/ |
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public function index(array $directories, array $extensions = []) |
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{ |
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$fileSystem = new Filesystem(); |
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$finder = new Finder(); |
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// reset the change set |
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$this->changes = []; |
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clearstatcache(); |
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foreach ($directories as $directory) { |
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if (!$fileSystem->exists($directory)) { |
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throw new Exception('The directory '.$directory.' does not exists'); |
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} |
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// find all files in the given directory |
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$finder |
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->files() |
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->in($directory) |
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; |
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// eventually filtering by file extension |
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foreach ($extensions as $extension) { |
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$finder->name('*.'.$extension); |
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} |
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// index the results |
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foreach ($finder as $file) { |
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$this->add($file); |
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} |
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} |
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} |
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/** |
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* Add an entry to the indexer. If a entry already exists, it will also be added to the changes. |
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* |
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* @param SplFileInfo $splFileInfo |
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* |
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* @throws Exception |
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*/ |
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public function add(SplFileInfo $splFileInfo) |
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{ |
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$fileSystem = new Filesystem(); |
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if (!$fileSystem->exists($splFileInfo->getRealPath())) { |
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throw new Exception('Trying to add '.$splFileInfo->getRealPath().' missing file to the index'); |
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} |
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// if the file is already present in the index, and its mtime has been modified, we add it to the change set |
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if ($this->has($splFileInfo->getRealPath()) |
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&& $splFileInfo->getMTime() !== $this->index[$splFileInfo->getRealPath()]) { |
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$this->changes[$splFileInfo->getRealPath()] = $splFileInfo; |
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} |
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// add new or existing file to the index |
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$this->index[$splFileInfo->getRealPath()] = $splFileInfo->getMTime(); |
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} |
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/** |
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* Return an existing index entry. |
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* |
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* @param string $entryName |
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* |
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* @return SplFileInfo |
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* |
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* @throws Exception |
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*/ |
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public function get($entryName) |
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{ |
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if (!$this->has($entryName)) { |
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throw new Exception('Trying to get invalid index entry : '.$entryName); |
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} |
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return new SplFileInfo($entryName); |
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} |
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/** |
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* Return true if the entry exists, false otherwise. |
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* |
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* @param $entryName |
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* |
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* @return bool |
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*/ |
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public function has($entryName) |
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{ |
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return array_key_exists($entryName, $this->index); |
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} |
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/** |
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* Return true if the indexer has new changes since last index. |
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* |
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* @return bool |
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*/ |
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public function hasChangedEntries() |
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{ |
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return count($this->changes) > 0; |
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} |
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/** |
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* Return the changed entry since last index. |
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* |
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* @return SplFileInfo[] |
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*/ |
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public function getChangedEntries() |
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{ |
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return $this->changes; |
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} |
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} |
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johnkrovitch /
SamBundle
