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<?php |
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namespace League\Flysystem\Memory; |
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use League\Flysystem\Adapter\Polyfill\StreamedWritingTrait; |
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use League\Flysystem\AdapterInterface; |
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use League\Flysystem\Config; |
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use League\Flysystem\Util; |
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/** |
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* An adapter that keeps the filesystem in memory. |
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*/ |
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class MemoryAdapter implements AdapterInterface |
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{ |
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use StreamedWritingTrait; |
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/** |
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* The emulated filesystem. |
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* |
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* Start with the root directory initialized. |
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* |
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* @var array |
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*/ |
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protected $storage; |
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public function __construct(Config $config = null) |
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{ |
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$this->storage = [ |
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'' => [ |
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'type' => 'dir', |
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'timestamp' => $config ? $config->get('timestamp', time()) : time(), |
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], |
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]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function copy($path, $newpath) |
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{ |
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// Make sure all the destination sub-directories exist. |
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if ( ! $this->doCreateDir(Util::dirname($newpath), new Config())) { |
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return false; |
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} |
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$this->storage[$newpath] = $this->storage[$path]; |
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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 createDir($dirname, Config $config) |
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{ |
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if ( ! $this->doCreateDir($dirname, $config)) { |
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return false; |
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} |
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return $this->getMetadata($dirname); |
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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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if ( ! $this->hasFile($path)) { |
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return false; |
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} |
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unset($this->storage[$path]); |
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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 deleteDir($dirname) |
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{ |
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if ( ! $this->hasDirectory($dirname)) { |
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return false; |
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} |
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foreach ($this->doListContents($dirname, true) as $path) { |
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unset($this->storage[$path]); |
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} |
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unset($this->storage[$dirname]); |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getMetadata($path) |
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{ |
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$metadata = $this->storage[$path] + ['path' => $path]; |
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unset($metadata['contents']); |
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return $metadata; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getMimetype($path) |
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{ |
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$mimetype = Util::guessMimeType($path, $this->storage[$path]['contents']); |
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return [ |
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'mimetype' => $mimetype, |
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'path' => $path, |
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]; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function getSize($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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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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public function getVisibility($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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public function has($path) |
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{ |
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return isset($this->storage[$path]); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function listContents($directory = '', $recursive = false) |
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{ |
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$contents = $this->doListContents($directory, $recursive); |
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return array_map([$this, 'getMetadata'], array_values($contents)); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function read($path) |
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{ |
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return [ |
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'path' => $path, |
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'contents' => $this->storage[$path]['contents'], |
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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 readStream($path) |
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{ |
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$stream = fopen('php://memory', 'w+b'); |
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if ( ! is_resource($stream)) { |
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throw new \RuntimeException('Unable to create memory stream.'); // @codeCoverageIgnore |
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} |
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fwrite($stream, $this->storage[$path]['contents']); |
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rewind($stream); |
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return compact('path', 'stream'); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function rename($path, $newpath) |
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{ |
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if ( ! $this->copy($path, $newpath)) { |
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return false; |
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} |
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unset($this->storage[$path]); |
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return true; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function setVisibility($path, $visibility) |
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{ |
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if ( ! $this->hasFile($path)) { |
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return false; |
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} |
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$this->storage[$path]['visibility'] = $visibility; |
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return $this->getVisibility($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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if ( ! $this->hasFile($path)) { |
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return false; |
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} |
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$this->storage[$path]['contents'] = $contents; |
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$this->storage[$path]['timestamp'] = $config->get('timestamp', time()); |
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$this->storage[$path]['size'] = Util::contentSize($contents); |
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$this->storage[$path]['visibility'] = $config->get('visibility', $this->storage[$path]['visibility']); |
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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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public function write($path, $contents, Config $config) |
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{ |
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// Make sure all the destination sub-directories exist. |
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if ( ! $this->doCreateDir(Util::dirname($path), $config)) { |
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return false; |
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} |
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$this->storage[$path]['type'] = 'file'; |
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$this->storage[$path]['visibility'] = AdapterInterface::VISIBILITY_PUBLIC; |
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return $this->update($path, $contents, $config); |
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} |
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/** |
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* Creates a directory. |
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* |
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* @param string $dirname |
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* @param Config $config |
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* |
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* @return bool |
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*/ |
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protected function doCreateDir($dirname, Config $config) |
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{ |
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if ($this->hasDirectory($dirname)) { |
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return true; |
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} |
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if ($this->hasFile($dirname)) { |
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return false; |
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} |
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// Make sure all the sub-directories exist. |
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if ( ! $this->doCreateDir(Util::dirname($dirname), $config)) { |
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return false; |
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} |
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$this->storage[$dirname]['type'] = 'dir'; |
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$this->storage[$dirname]['timestamp'] = $config->get('timestamp', time()); |
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return true; |
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} |
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/** |
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* Filters the file system returning paths inside the directory. |
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* |
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* @param string $directory |
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* @param bool $recursive |
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* |
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* @return string[] |
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*/ |
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protected function doListContents($directory, $recursive) |
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{ |
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$filter = function ($path) use ($directory, $recursive) { |
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// Remove the root directory from any listing. |
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if ($path === '') { |
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return false; |
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} |
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if (Util::dirname($path) === $directory) { |
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return true; |
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} |
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return $recursive && $this->pathIsInDirectory($path, $directory); |
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}; |
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return array_filter(array_keys($this->storage), $filter); |
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} |
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/** |
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* Checks whether a directory exists. |
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* |
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* @param string $path The directory. |
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* |
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* @return bool True if it exists, and is a directory, false if not. |
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*/ |
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protected function hasDirectory($path) |
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{ |
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return $this->has($path) && $this->storage[$path]['type'] === 'dir'; |
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} |
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/** |
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* Checks whether a file exists. |
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* |
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* @param string $path The file. |
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* |
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* @return bool True if it exists, and is a file, false if not. |
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*/ |
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protected function hasFile($path) |
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{ |
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return $this->has($path) && $this->storage[$path]['type'] === 'file'; |
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} |
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/** |
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* Determines if the path is inside the directory. |
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* |
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* @param string $path |
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* @param string $directory |
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* |
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* @return bool |
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*/ |
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protected function pathIsInDirectory($path, $directory) |
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{ |
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return $directory === '' || strpos($path, $directory . '/') === 0; |
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} |
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} |
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