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<?php |
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namespace Yiranzai\File; |
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/** |
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* Class Cache |
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* @package Yiranzai\File |
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*/ |
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class Cache |
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{ |
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/** |
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* |
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*/ |
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public const DEFAULT_PATH = __DIR__ . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'data' . DIRECTORY_SEPARATOR; |
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/** |
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* @var string |
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*/ |
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protected $dataPath = self::DEFAULT_PATH; |
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/** |
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* @var Filesystem |
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*/ |
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protected $file; |
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/** |
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* @var array |
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*/ |
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protected $guarded = ['file']; |
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/** |
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* Hash constructor. |
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* @param array $config |
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*/ |
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public function __construct($config = []) |
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{ |
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if (!empty($config)) { |
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foreach ($config as $key => $item) { |
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if (in_array($key, $this->guarded, true)) { |
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continue; |
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} |
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$this->$key = $item; |
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} |
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} |
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$this->file = new Filesystem(); |
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} |
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/** |
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* @param string $key |
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* @param string $data |
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* @return Cache |
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*/ |
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public function put(string $key, string $data): Cache |
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{ |
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$this->ensureCacheDirectoryExists($path = $this->path($key)); |
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if ($this->file->exists($path = $this->path($key))) { |
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if ($bucket = $this->getBucket($path)) { |
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$bucket->putNode($key, $data); |
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} |
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} else { |
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$bucket = new Bucket($key, $data); |
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} |
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$this->file->put($path, serialize($bucket)); |
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return $this; |
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} |
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/** |
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* @param $key |
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* @param null $default |
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* @return null |
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*/ |
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public function get($key, $default = null) |
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{ |
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if (!$this->file->exists($path = $this->path($key))) { |
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return $default; |
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} |
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if (!$bucket = $this->getBucket($path)) { |
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return $default; |
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} |
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if ($node = $bucket->findNode($key)) { |
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return $node->data; |
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} |
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return $default; |
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} |
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/** |
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* @param string $path |
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* @return Bucket|null |
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*/ |
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protected function getBucket(string $path): ?Bucket |
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{ |
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$bucket = $this->file->get($path); |
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if ($bucket) { |
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$bucket = unserialize($bucket, array('allowed_classes' => [Node::class, Bucket::class])); |
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} |
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return $bucket; |
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} |
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/** |
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* @param string $key |
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* @return string |
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*/ |
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protected function path(string $key): string |
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{ |
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$parts = array_slice(str_split($hash = hash('sha256', $key), 2), 0, 2); |
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return $this->dataPath . DIRECTORY_SEPARATOR . implode( |
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DIRECTORY_SEPARATOR, |
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$parts |
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) . DIRECTORY_SEPARATOR . $hash; |
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} |
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/** |
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* @param string $path |
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* @return void |
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*/ |
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protected function ensureCacheDirectoryExists($path): void |
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{ |
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if (!$this->file->exists(dirname($path))) { |
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$this->file->makeDirectory(dirname($path), 0777, true, true); |
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} |
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} |
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/** |
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* @param string $path |
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* @return $this |
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*/ |
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3 |
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public function dataPath(string $path): self |
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{ |
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3 |
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$this->dataPath = $path; |
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3 |
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return $this; |
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} |
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} |
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yiranzai /
php-file-cache
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